0001711269-22-000008 | 10-K | XBRL Viewer

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Consolidated Statements of Comprehensive Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
OPERATING REVENUES	$ 1,913.7	$ 1,705.6	$ 1,806.5
OPERATING EXPENSES:
Fuel and purchased power	613.5	416.1	482.1
SPP network transmission costs	290.4	263.2	251.3
Operating and maintenance	365.4	407.5	451.9
Depreciation and amortization	321.0	326.1	318.4
Taxes other than income tax	126.2	121.6	127.6
Total Operating Expenses	1,426.1	1,271.3	1,380.0
INCOME FROM OPERATIONS	487.6	434.3	426.5
OTHER INCOME (EXPENSE):
Investment earnings	0.2	1.4	2.4
Other income	16.1	9.2	3.2
Other expense	(29.4)	(25.5)	(21.4)
Total Other Expense, Net	(13.1)	(14.9)	(15.8)
Interest expense	109.8	113.6	119.8
INCOME BEFORE INCOME TAXES	364.7	305.8	290.9
Income tax expense	52.4	7.1	35.7
Equity in earnings of equity method investees, net of income taxes	4.0	4.6	4.6
NET INCOME	312.3	298.7	255.2
Less: Net income attributable to noncontrolling interests	12.2	11.7	15.7
Net income attributable to Evergy, Inc.	$ 312.3	$ 298.7	$ 255.2
BASIC AND DILUTED EARNINGS PER AVERAGE COMMON SHARE OUTSTANDING ATTRIBUTABLE TO EVERGY, INC. (see Note 1)
Basic earnings per common share (in dollars per share)	$ 3.84	$ 2.72	$ 2.80
Diluted earnings per common share (in dollars per share)	$ 3.83	$ 2.72	$ 2.79
AVERAGE COMMON SHARES OUTSTANDING
Basic (in shares)	229.0	227.2	239.5
Diluted (in shares)	229.6	227.5	239.9
COMPREHENSIVE INCOME
NET INCOME	$ 312.3	$ 298.7	$ 255.2
Derivative hedging activity
Loss on derivative hedging instruments	0.0	0.0	(64.4)
Income tax benefit	0.0	0.0	16.5
Net loss on derivative hedging instruments	0.0	0.0	(47.9)
Reclassification to expenses, net of tax	(0.3)	(0.2)	0.7
Derivative hedging activity, net of tax	(0.3)	(0.2)	0.7
Defined benefit pension plans
Net loss arising during period	(0.1)	(3.0)	(0.8)
Income tax benefit	0.0	0.7	0.2
Net loss arising during period, net of tax	(0.1)	(2.3)	(0.6)
Amortization of net losses included in net periodic benefit costs, net of tax	0.0	(0.1)	0.0
Change in unrecognized pension expense, net of tax	(0.1)	(2.4)	(0.6)
Total other comprehensive loss	(0.3)	(0.2)	0.7
COMPREHENSIVE INCOME	897.3	630.6	638.6
Less: comprehensive income attributable to noncontrolling interest	12.2	11.7	15.7
COMPREHENSIVE INCOME	$ 312.0	$ 298.5	$ 255.9

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 2.1	$ 71.6
Receivables, net of allowance for credit losses of $32.9 and $19.3, respectively	31.0	45.0
Accounts receivable pledged as collateral	116.0	130.0
Fuel inventory and supplies	211.0	170.4
Income taxes receivable	0.0	3.2
Regulatory assets	86.3	82.0
Prepaid expenses	41.0	27.4
Other assets	19.7	14.2
Total Current Assets	766.5	764.9
PROPERTY, PLANT AND EQUIPMENT, NET	10,548.9	10,193.6
OTHER ASSETS:
Regulatory assets	410.7	533.5
Nuclear decommissioning trust fund	400.3	342.3
Goodwill	2,336.6	2,336.6
Other	104.4	133.9
Total Other Assets	915.4	1,009.7
TOTAL ASSETS	9,156.8	8,915.8
CURRENT LIABILITIES:
Current maturities of long-term debt	0.0	0.0
Notes payable and commercial paper	406.0	50.0
Collateralized note payable	116.0	130.0
Accounts payable	305.2	280.1
Accrued taxes	38.6	34.9
Accrued interest	26.4	30.0
Regulatory liabilities	54.6	8.0
Asset retirement obligations	11.0	21.2
Accrued compensation and benefits	37.8	44.4
Other	48.8	37.3
Total Current Liabilities	638.5	586.0
LONG-TERM LIABILITIES:
Long-term debt, net	3,934.2	3,931.5
Deferred income taxes	606.1	558.8
Unamortized investment tax credits	117.2	118.5
Regulatory liabilities	954.2	899.4
Pension and post-retirement liability	420.9	565.1
Asset retirement obligations	370.0	357.7
Other	103.7	148.1
Total Long-Term Liabilities	5,497.1	5,570.6
Evergy, Inc. Shareholders' Equity:
Retained earnings	1,453.8	1,191.5
Accumulated other comprehensive loss	4.3	4.6
Total Evergy, Inc. Shareholders' Equity	3,021.2	2,759.2
Noncontrolling Interests	(2.7)	(14.9)
Total Equity	3,021.2	2,759.2	$ 2,580.7	$ 2,499.8
TOTAL LIABILITIES AND EQUITY	9,156.8	8,915.8
Consolidated Entity Excluding Variable Interest Entities (VIE)
CURRENT ASSETS:
PROPERTY, PLANT AND EQUIPMENT, NET	10,548.9	10,193.6
CURRENT LIABILITIES:
Current maturities of long-term debt	389.3	436.4
LONG-TERM LIABILITIES:
Long-term debt, net	3,934.2	3,931.5
Variable Interest Entities
CURRENT ASSETS:
PROPERTY, PLANT AND EQUIPMENT, NET	147.8	154.9
CURRENT LIABILITIES:
Current maturities of long-term debt	0.0	18.8
Accrued interest	$ 0.0	$ 0.1

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Allowance for credit losses	$ 13.3	$ 8.1	$ 4.6
Common stock - shares authorized (in shares)	1,000	1,000
Common stock - shares issued (in shares)	1	1

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	$ 312.3	$ 298.7	$ 255.2
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	321.0	326.1	318.4
Amortization of nuclear fuel	25.8	29.5	25.9
Amortization of deferred refueling outage	12.6	12.7	12.8
Amortization of corporate-owned life insurance	24.1	20.1	19.8
Non-cash compensation	15.6	16.0	16.3
Net deferred income taxes and credits	10.0	(3.5)	(30.6)
Allowance for equity funds used during construction	(12.6)	(8.0)	(2.2)
Payments for asset retirement obligations	(7.4)	(7.5)	(2.5)
Equity in earnings of equity method investees, net of income taxes	(4.0)	(4.6)	(4.6)
Income from corporate-owned life insurance	(14.2)	(8.2)	(29.0)
Other	(0.4)	(0.4)	0.3
Changes in working capital items:
Accounts receivable	43.2	(13.2)	37.0
Accounts receivable pledged as collateral	14.0	(12.0)	12.0
Fuel inventory and supplies	(40.6)	(7.4)	14.6
Prepaid expenses and other current assets	(16.3)	(7.9)	28.0
Accounts payable	(1.1)	24.6	9.1
Accrued taxes	6.9	1.6	(9.6)
Other current liabilities	44.0	2.4	(53.2)
Changes in other assets	61.5	59.1	33.7
Changes in other liabilities	(38.7)	(47.3)	(34.7)
Cash Flows from Operating Activities	734.2	647.5	614.2
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(682.9)	(565.4)	(445.0)
Purchase of securities - trusts	(28.3)	(45.4)	(34.0)
Sale of securities - trusts	18.2	37.9	25.7
Investment in corporate-owned life insurance	(14.2)	(18.3)	(17.6)
Proceeds from investment in corporate-owned life insurance	77.0	63.8	158.9
Other investing activities	6.8	4.6	9.0
Cash Flows used in Investing Activities	(741.2)	(668.3)	(444.3)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	0.0	(199.3)	22.4
Proceeds from term loan facility	0.0	0.0	1,000.0
Repayment of term loan facility	0.0	0.0	(1,000.0)
Collateralized short-term borrowings, net	(14.0)	12.0	(12.0)
Issuance of common stock	112.5	0.0	0.0
Proceeds from long-term debt	0.0	396.2	393.2
Retirements of long-term debt	0.0	0.0	(400.0)
Retirements of long-term debt of variable interest entities	(18.8)	(32.3)	(30.3)
Payment for settlement of interest rate swap accounted for as a cash flow hedge	0.0	0.0	(69.8)
Borrowings against cash surrender value of corporate-owned life insurance	51.4	52.7	56.5
Repayment of borrowings against cash surrender value of corporate-owned life insurance	(62.3)	(53.7)	(125.4)
Cash dividends paid	(50.0)	(120.0)	(175.0)
Repurchase of common stock under repurchase plan	0.0	0.0	(1,628.7)
Distributions to shareholders of noncontrolling interests	0.0	0.0	(8.6)
Other financing activities	1.5	1.5	0.9
Cash Flows from (used in) Financing Activities	(62.5)	90.4	(170.5)
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(69.5)	69.6	(0.6)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	71.6	2.0	2.6
End of period	$ 2.1	$ 71.6	$ 2.0

Consolidated Statements of Changes in Equity - USD ($) $ in Millions	Total	Common Stock	Retained earnings	AOCI	Non-controlling interests
Beginning balance (in shares) at Dec. 31, 2018		1
Beginning balance at Dec. 31, 2018	$ 2,499.8	$ 1,563.1	$ 932.6	$ (3.0)	$ (37.5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	255.2		255.2		15.7
Issuance of stock compensation and reinvested dividends, net of tax withholding (in shares)		111,849
Issuance of stock compensation and reinvested dividends, net of tax withholding	(2.4)	$ (2.4)
Dividends declared on common stock	(175.0)		(175.0)
Dividend equivalents declared	(1.9)		(1.9)
Stock compensation expense	16.3	$ 16.3
Repurchase of common stock (in shares)		(28,796,658)
Repurchase of common stock under repurchase plan	(1,628.7)	$ (1,628.7)
Consolidation of noncontrolling interests	3.8				3.8
Distributions to shareholders of noncontrolling interests	(8.6)				(8.6)
Unearned compensation
Derivative hedging activity, net of tax	0.7			(46.4)
Change in unrecognized pension expense, net of tax	(0.6)			(0.6)
Ending balance (in shares) at Dec. 31, 2019		1
Ending balance at Dec. 31, 2019	2,580.7	$ 1,563.1	1,012.8	(50.0)	(26.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	298.7		298.7		11.7
Issuance of stock compensation and reinvested dividends, net of tax withholding (in shares)		195,227
Issuance of stock compensation and reinvested dividends, net of tax withholding	(5.9)	$ (5.9)
Dividends declared on common stock	(120.0)		(120.0)
Dividend equivalents declared	(2.0)		(2.0)
Stock compensation expense	16.0	16.0
Unearned compensation
Derivative hedging activity, net of tax	(0.2)			3.0
Change in unrecognized pension expense, net of tax	(2.4)			(2.4)
Other	(0.5)	$ (0.5)
Ending balance (in shares) at Dec. 31, 2020		1
Ending balance at Dec. 31, 2020	2,759.2	$ 1,563.1	1,191.5	(49.4)	(14.9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	312.3		312.3		12.2
Issuance of stock, net of issuance costs (in shares)		2,269,447
Issuance of stock, net of issuance costs	112.5	$ 112.5
Issuance of stock compensation and reinvested dividends, net of tax withholding (in shares)		139,729
Issuance of stock compensation and reinvested dividends, net of tax withholding	(2.4)	$ (2.4)
Issuance of restricted common stock (in shares)		54,054
Issuance of restricted common stock	2.9	$ 2.9
Dividends declared on common stock	(50.0)		(50.0)
Dividend equivalents declared	(1.7)		(1.7)
Stock compensation expense	13.8	13.8
Unearned compensation
Issuance of restricted common stock	(2.9)	(2.9)
Compensation expense recognized	1.8	1.8
Derivative hedging activity, net of tax	(0.3)			5.5
Change in unrecognized pension expense, net of tax	(0.1)			(0.1)
Other	(0.2)	$ (0.2)
Ending balance (in shares) at Dec. 31, 2021		1
Ending balance at Dec. 31, 2021	$ 3,021.2	$ 1,563.1	$ 1,453.8	$ (44.0)	$ (2.7)

Consolidated Statements of Changes in Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Stockholders' Equity [Abstract]
Dividends declared on common stock (in dollars per share)	$ 2.178	$ 2.05	$ 1.93

Consolidated Statements of Income - Evergy Kansas Central, Inc - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
OPERATING REVENUES	$ 1,913.7	$ 1,705.6	$ 1,806.5
OPERATING EXPENSES:
Fuel and purchased power	613.5	416.1	482.1
SPP network transmission costs	290.4	263.2	251.3
Operating and maintenance	365.4	407.5	451.9
Depreciation and amortization	321.0	326.1	318.4
Taxes other than income tax	126.2	121.6	127.6
Total Operating Expenses	1,426.1	1,271.3	1,380.0
INCOME FROM OPERATIONS	487.6	434.3	426.5
OTHER INCOME (EXPENSE):
Investment earnings	0.2	1.4	2.4
Other income	16.1	9.2	3.2
Other expense	(29.4)	(25.5)	(21.4)
Total Other Expense, Net	(13.1)	(14.9)	(15.8)
Interest expense	109.8	113.6	119.8
INCOME BEFORE INCOME TAXES	364.7	305.8	290.9
Income tax expense	52.4	7.1	35.7
Equity in earnings of equity method investees, net of income taxes	4.0	4.6	4.6
NET INCOME	312.3	298.7	255.2
Less: Net income attributable to noncontrolling interests	12.2	11.7	15.7
Net income attributable to Evergy, Inc.	$ 312.3	$ 298.7	$ 255.2

Consolidated Balance Sheets - Evergy Kansas Central, Inc - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 2.1	$ 71.6
Receivables, net of allowance for credit losses of $13.0 and $7.5, respectively	31.0	45.0
Related party receivables	277.8	225.6
Accounts receivable pledged as collateral	116.0	130.0
Fuel inventory and supplies	211.0	170.4
Income taxes receivable	0.0	3.2
Regulatory assets	86.3	82.0
Prepaid expenses	41.0	27.4
Total Current Assets	766.5	764.9
PROPERTY, PLANT AND EQUIPMENT, NET	10,548.9	10,193.6
OTHER ASSETS:
Regulatory assets	410.7	533.5
Nuclear decommissioning trust fund	400.3	342.3
Other	104.4	133.9
Total Other Assets	915.4	1,009.7
TOTAL ASSETS	9,156.8	8,915.8
CURRENT LIABILITIES:
Current maturities of long-term debt	0.0	0.0
Notes payable and commercial paper	406.0	50.0
Collateralized note payable	116.0	130.0
Accounts payable	305.2	280.1
Related party payables	0.1	0.1
Accrued taxes	38.6	34.9
Accrued interest	26.4	30.0
Regulatory liabilities	54.6	8.0
Asset retirement obligations	11.0	21.2
Accrued compensation and benefits	37.8	44.4
Other	48.8	37.3
Total Current Liabilities	638.5	586.0
LONG-TERM LIABILITIES:
Long-term debt, net	3,934.2	3,931.5
Deferred income taxes	606.1	558.8
Unamortized investment tax credits	117.2	118.5
Regulatory liabilities	954.2	899.4
Pension and post-retirement liability	420.9	565.1
Asset retirement obligations	370.0	357.7
Other	103.7	148.1
Total Long-Term Liabilities	5,497.1	5,570.6
Commitments and Contingencies (Note 14)
Evergy, Inc. Shareholders' Equity:
Common stock	1,563.1	1,563.1
Retained earnings	1,453.8	1,191.5
Total Evergy, Inc. Shareholders' Equity	3,021.2	2,759.2
Noncontrolling Interests	(2.7)	(14.9)
Total Equity	3,021.2	2,759.2	$ 2,580.7	$ 2,499.8
TOTAL LIABILITIES AND EQUITY	9,156.8	8,915.8
Consolidated Entity Excluding Variable Interest Entities (VIE)
CURRENT ASSETS:
PROPERTY, PLANT AND EQUIPMENT, NET	10,548.9	10,193.6
CURRENT LIABILITIES:
Current maturities of long-term debt	389.3	436.4
LONG-TERM LIABILITIES:
Long-term debt, net	3,934.2	3,931.5
Variable Interest Entities
CURRENT ASSETS:
PROPERTY, PLANT AND EQUIPMENT, NET	147.8	154.9
CURRENT LIABILITIES:
Current maturities of long-term debt	0.0	18.8
Accrued interest	$ 0.0	$ 0.1

Consolidated Balance Sheets - Evergy Kansas Central, Inc (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Allowance for credit losses	$ 13.3	$ 8.1
Common stock - shares authorized (in shares)	1,000	1,000
Common stock - par value (in dollars per share)	$ 0.01	$ 0.01
Common stock - shares issued (in shares)	1	1

Consolidated Statements of Cash Flows - Evergy Kansas Central, Inc - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	$ 312.3	$ 298.7	$ 255.2
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	321.0	326.1	318.4
Amortization of nuclear fuel	25.8	29.5	25.9
Amortization of deferred refueling outage	12.6	12.7	12.8
Amortization of corporate-owned life insurance	24.1	20.1	19.8
Non-cash compensation	15.6	16.0	16.3
Net deferred income taxes and credits	10.0	(3.5)	(30.6)
Allowance for equity funds used during construction	(12.6)	(8.0)	(2.2)
Payments for asset retirement obligations	(7.4)	(7.5)	(2.5)
Equity in earnings of equity method investees, net of income taxes	(4.0)	(4.6)	(4.6)
Income from corporate-owned life insurance	(14.2)	(8.2)	(29.0)
Other	(0.4)	(0.4)	0.3
Changes in working capital items:
Accounts receivable	43.2	(13.2)	37.0
Accounts receivable pledged as collateral	14.0	(12.0)	12.0
Fuel inventory and supplies	(40.6)	(7.4)	14.6
Prepaid expenses and other current assets	(16.3)	(7.9)	28.0
Accounts payable	(1.1)	24.6	9.1
Accrued taxes	6.9	1.6	(9.6)
Other current liabilities	44.0	2.4	(53.2)
Changes in other assets	61.5	59.1	33.7
Changes in other liabilities	(38.7)	(47.3)	(34.7)
Cash Flows from Operating Activities	734.2	647.5	614.2
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(682.9)	(565.4)	(445.0)
Purchase of securities - trusts	(28.3)	(45.4)	(34.0)
Sale of securities - trusts	18.2	37.9	25.7
Investment in corporate-owned life insurance	(14.2)	(18.3)	(17.6)
Proceeds from investment in corporate-owned life insurance	77.0	63.8	158.9
Other investing activities	6.8	4.6	9.0
Cash Flows used in Investing Activities	(741.2)	(668.3)	(444.3)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	0.0	(199.3)	22.4
Collateralized short-term debt, net	(14.0)	12.0	(12.0)
Proceeds from long-term debt	0.0	396.2	393.2
Retirements of long-term debt	0.0	0.0	(400.0)
Retirements of long-term debt of variable interest entities	(18.8)	(32.3)	(30.3)
Borrowings against cash surrender value of corporate-owned life insurance	51.4	52.7	56.5
Repayment of borrowings against cash surrender value of corporate-owned life insurance	(62.3)	(53.7)	(125.4)
Cash dividends paid	(50.0)	(120.0)	(175.0)
Distributions to shareholders of noncontrolling interests	0.0	0.0	(8.6)
Other financing activities	1.5	1.5	0.9
Cash Flows from (used in) Financing Activities	(62.5)	90.4	(170.5)
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(69.5)	69.6	(0.6)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	71.6	2.0	2.6
End of period	$ 2.1	$ 71.6	$ 2.0

Consolidated Statements of Changes in Equity - Evergy Kansas Central, Inc - USD ($) $ in Millions	Total	Common Stock	Retained earnings	Non-controlling interests
Beginning balance (in shares) at Dec. 31, 2018		1
Beginning balance at Dec. 31, 2018	$ 2,499.8	$ 1,563.1	$ 932.6	$ (37.5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	255.2		255.2	15.7
Dividends declared on common stock	(175.0)		(175.0)
Consolidation of noncontrolling interests	3.8			3.8
Distributions to shareholders of noncontrolling interests	(8.6)			(8.6)
Ending balance (in shares) at Dec. 31, 2019		1
Ending balance at Dec. 31, 2019	2,580.7	$ 1,563.1	1,012.8	(26.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	298.7		298.7	11.7
Dividends declared on common stock	(120.0)		(120.0)
Ending balance (in shares) at Dec. 31, 2020		1
Ending balance at Dec. 31, 2020	2,759.2	$ 1,563.1	1,191.5	(14.9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	312.3		312.3	12.2
Dividends declared on common stock	(50.0)		(50.0)
Ending balance (in shares) at Dec. 31, 2021		1
Ending balance at Dec. 31, 2021	$ 3,021.2	$ 1,563.1	$ 1,453.8	$ (2.7)

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669619-108580

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
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- Definition

Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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+ Details

Consolidated Statements of Comprehensive Income - Evergy Metro, Inc - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
OPERATING REVENUES	$ 1,913.7	$ 1,705.6	$ 1,806.5
OPERATING EXPENSES:
Fuel and purchased power	613.5	416.1	482.1
Operating and maintenance	365.4	407.5	451.9
Depreciation and amortization	321.0	326.1	318.4
Taxes other than income tax	126.2	121.6	127.6
Total Operating Expenses	1,426.1	1,271.3	1,380.0
INCOME FROM OPERATIONS	487.6	434.3	426.5
OTHER INCOME (EXPENSE):
Investment earnings	0.2	1.4	2.4
Other income	16.1	9.2	3.2
Other expense	(29.4)	(25.5)	(21.4)
Total Other Expense, Net	(13.1)	(14.9)	(15.8)
Interest expense	109.8	113.6	119.8
INCOME BEFORE INCOME TAXES	364.7	305.8	290.9
Income tax expense	52.4	7.1	35.7
Net income attributable to Evergy, Inc.	312.3	298.7	255.2
Derivative hedging activity
Reclassification to expenses, net of tax	(0.3)	(0.2)	0.7
Derivative hedging activity, net of tax	(0.3)	(0.2)	0.7
Total other comprehensive loss	(0.3)	(0.2)	0.7
COMPREHENSIVE INCOME	$ 312.0	$ 298.5	$ 255.9

Consolidated Balance Sheets - Evergy Metro, Inc - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
CURRENT ASSETS:
Cash and cash equivalents	$ 2.1	$ 71.6
Receivables, net of allowance for credit losses of $13.3 and $8.1, respectively	31.0	45.0
Related party receivables	277.8	225.6
Accounts receivable pledged as collateral	116.0	130.0
Fuel inventory and supplies	211.0	170.4
Income taxes receivable	0.0	3.2
Regulatory assets	86.3	82.0
Prepaid expenses	22.6	22.9
Other assets	19.7	14.2
Total Current Assets	766.5	764.9
PROPERTY, PLANT AND EQUIPMENT, NET	10,548.9	10,193.6
OTHER ASSETS:
Regulatory assets	410.7	533.5
Nuclear decommissioning trust fund	400.3	342.3
Other	104.4	133.9
Total Other Assets	915.4	1,009.7
TOTAL ASSETS	9,156.8	8,915.8
CURRENT LIABILITIES:
Current maturities of long-term debt	0.0	0.0
Notes payable and commercial paper	406.0	50.0
Collateralized note payable	116.0	130.0
Accounts payable	305.2	280.1
Related party payables	0.1	0.1
Accrued taxes	38.6	34.9
Accrued interest	26.4	30.0
Regulatory liabilities	54.6	8.0
Asset retirement obligations	11.0	21.2
Accrued compensation and benefits	37.8	44.4
Other	48.8	37.3
Total Current Liabilities	638.5	586.0
LONG-TERM LIABILITIES:
Long-term debt, net	3,934.2	3,931.5
Deferred income taxes	606.1	558.8
Unamortized investment tax credits	117.2	118.5
Regulatory liabilities	954.2	899.4
Pension and post-retirement liability	420.9	565.1
Asset retirement obligations	370.0	357.7
Other	103.7	148.1
Total Long-Term Liabilities	5,497.1	5,570.6
Commitments and Contingencies (Note 14)
EQUITY:
Common stock	1,563.1	1,563.1
Retained earnings	1,453.8	1,191.5
Accumulated other comprehensive loss	4.3	4.6
Total Evergy, Inc. Shareholders' Equity	3,021.2	2,759.2
TOTAL LIABILITIES AND EQUITY	$ 9,156.8	$ 8,915.8

Consolidated Balance Sheets - Evergy Metro, Inc (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for credit losses	$ 13.3	$ 8.1	$ 4.6
Common stock - shares authorized (in shares)	1,000	1,000
Common stock - shares issued (in shares)	1	1

Consolidated Statements of Cash Flows - Evergy Metro, Inc - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	$ 312.3	$ 298.7	$ 255.2
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	321.0	326.1	318.4
Amortization of nuclear fuel	25.8	29.5	25.9
Amortization of deferred refueling outage	12.6	12.7	12.8
Net deferred income taxes and credits	10.0	(3.5)	(30.6)
Allowance for equity funds used during construction	(12.6)	(8.0)	(2.2)
Payments for asset retirement obligations	(7.4)	(7.5)	(2.5)
Other	(0.4)	(0.4)	0.3
Changes in working capital items:
Accounts receivable	43.2	(13.2)	37.0
Accounts receivable pledged as collateral	14.0	(12.0)	12.0
Fuel inventory and supplies	(40.6)	(7.4)	14.6
Prepaid expenses and other current assets	(16.3)	(7.9)	28.0
Accounts payable	(1.1)	24.6	9.1
Accrued taxes	6.9	1.6	(9.6)
Other current liabilities	44.0	2.4	(53.2)
Changes in other assets	61.5	59.1	33.7
Changes in other liabilities	(38.7)	(47.3)	(34.7)
Cash Flows from Operating Activities	734.2	647.5	614.2
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(682.9)	(565.4)	(445.0)
Purchase of securities - trusts	(28.3)	(45.4)	(34.0)
Sale of securities - trusts	18.2	37.9	25.7
Net money pool lending	(55.0)	(100.0)	0.0
Other investing activities	6.8	4.6	9.0
Cash Flows used in Investing Activities	(741.2)	(668.3)	(444.3)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	0.0	(199.3)	22.4
Collateralized short-term debt, net	(14.0)	12.0	(12.0)
Proceeds from long-term debt	0.0	396.2	393.2
Retirements of long-term debt	0.0	0.0	(400.0)
Cash dividends paid	(50.0)	(120.0)	(175.0)
Other financing activities	1.5	1.5	0.9
Cash Flows from (used in) Financing Activities	(62.5)	90.4	(170.5)
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(69.5)	69.6	(0.6)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	71.6	2.0	2.6
End of period	$ 2.1	$ 71.6	$ 2.0

Consolidated Statements of Changes in Equity - Evergy Metro, Inc - USD ($) $ in Millions	Total	Common Stock	Retained earnings	AOCI - Net gains (losses) on cash flow hedges
Beginning balance (in shares) at Dec. 31, 2018		1
Beginning balance at Dec. 31, 2018	$ 2,499.8	$ 1,563.1	$ 932.6	$ 4.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	255.2		255.2
Dividends declared on common stock	(175.0)		(175.0)
Derivative hedging activity, net of tax	0.7			0.7
Ending balance (in shares) at Dec. 31, 2019		1
Ending balance at Dec. 31, 2019	2,580.7	$ 1,563.1	1,012.8	4.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	298.7		298.7
Dividends declared on common stock	(120.0)		(120.0)
Derivative hedging activity, net of tax	(0.2)			(0.2)
Ending balance (in shares) at Dec. 31, 2020		1
Ending balance at Dec. 31, 2020	2,759.2	$ 1,563.1	1,191.5	4.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	312.3		312.3
Dividends declared on common stock	(50.0)		(50.0)
Derivative hedging activity, net of tax	(0.3)			(0.3)
Ending balance (in shares) at Dec. 31, 2021		1
Ending balance at Dec. 31, 2021	$ 3,021.2	$ 1,563.1	$ 1,453.8	$ 4.3

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

12 Months Ended

Dec. 31, 2021

Accounting Policies [Abstract]

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Organization

Evergy is a public utility holding company incorporated in 2017 and headquartered in Kansas City, Missouri. Evergy operates primarily through the following wholly-owned direct subsidiaries listed below.

•Evergy Kansas Central, Inc. (Evergy Kansas Central) is an integrated, regulated electric utility that provides electricity to customers in the state of Kansas. Evergy Kansas Central has one active wholly-owned subsidiary with significant operations, Evergy Kansas South, Inc. (Evergy Kansas South).

•Evergy Metro, Inc. (Evergy Metro) is an integrated, regulated electric utility that provides electricity to customers in the states of Missouri and Kansas.

•Evergy Missouri West, Inc. (Evergy Missouri West) is an integrated, regulated electric utility that provides electricity to customers in the state of Missouri.

•Evergy Transmission Company, LLC (Evergy Transmission Company) owns 13.5% of Transource Energy, LLC (Transource) with the remaining 86.5% owned by AEP Transmission Holding Company, LLC, a subsidiary of American Electric Power Company, Inc. (AEP). Transource is focused on the development of competitive electric transmission projects. Evergy Transmission Company accounts for its investment in Transource under the equity method.

Evergy Kansas Central also owns a 50% interest in Prairie Wind Transmission, LLC (Prairie Wind), which is a joint venture between Evergy Kansas Central and subsidiaries of AEP and Berkshire Hathaway Energy Company. Prairie Wind owns a 108-mile, 345 kV double-circuit transmission line that provides transmission service in the Southwest Power Pool, Inc. (SPP). Evergy Kansas Central accounts for its investment in Prairie Wind under the equity method.

Evergy Kansas Central, Evergy Kansas South, Evergy Metro and Evergy Missouri West conduct business in their respective service territories using the name Evergy. Collectively, the Evergy Companies have approximately 15,400 MWs of owned generating capacity and renewable power purchase agreements and engage in the generation, transmission, distribution and sale of electricity to approximately 1.6 million customers in the states of Kansas and Missouri.

Principles of Consolidation

Each of Evergy's, Evergy Kansas Central's and Evergy Metro's consolidated financial statements includes the accounts of their subsidiaries and variable interest entities (VIEs) of which they are the primary beneficiary. Undivided interests in jointly-owned generation facilities are included on a proportionate basis. Intercompany transactions have been eliminated. The Evergy Companies assess financial performance and allocate resources on a consolidated basis (i.e., operate in one segment).

Evergy Metro elected not to apply "push-down accounting" related to the Great Plains Energy Incorporated (Great Plains Energy) and Evergy Kansas Central merger in 2018, whereby the adjustments of assets and liabilities to fair value and the resulting goodwill would be recorded on the financial statements of the acquired subsidiary. These adjustments for Evergy Metro, as well as those related to the acquired assets and liabilities of Great Plains Energy and its other direct subsidiaries, are only reflected on Evergy's consolidated financial statements.

Use of Estimates

The process of preparing financial statements in conformity with generally accepted accounting principles (GAAP) requires the use of estimates and assumptions that affect the reported amounts of certain types of assets, liabilities, revenues and expenses. Such estimates primarily relate to unsettled transactions and events as of the date of the financial statements. Accordingly, upon settlement, actual results may differ from estimated amounts.

Cash and Cash Equivalents

Cash equivalents consist of highly liquid investments with original maturities of three months or less at acquisition.

Fuel Inventory and Supplies

The Evergy Companies record fuel inventory and supplies at average cost. The following table separately states the balances for fuel inventory and supplies.


	December 31
	2021		2020
Evergy	(millions)
Fuel inventory	$	160.9	$	145.0
Supplies	405.8		359.5
Fuel inventory and supplies	$	566.7	$	504.5
Evergy Kansas Central
Fuel inventory	$	74.3	$	79.3
Supplies	208.9		197.1
Fuel inventory and supplies	$	283.2	$	276.4
Evergy Metro
Fuel inventory	$	62.0	$	44.9
Supplies	149.0		125.5
Fuel inventory and supplies	$	211.0	$	170.4

Property, Plant and Equipment

The Evergy Companies record the value of property, plant and equipment, including that of VIEs, at cost. For plant, cost includes contracted services, direct labor and materials, indirect charges for engineering and supervision and an allowance for funds used during construction (AFUDC). AFUDC represents the allowed cost of capital used to finance utility construction activity. AFUDC equity funds are included as a non-cash item in other income and AFUDC borrowed funds are a reduction of interest expense. AFUDC is computed by applying a composite rate to qualified construction work in progress. The rates used to compute gross AFUDC are compounded semi-annually.

The amounts of the Evergy Companies' AFUDC for borrowed and equity funds are detailed in the following table.


	2021		2020		2019
Evergy	(millions)
AFUDC borrowed funds	$	14.7	$	16.5	$	14.5
AFUDC equity funds	29.4		17.2		2.2
Total	$	44.1	$	33.7	$	16.7
Evergy Kansas Central
AFUDC borrowed funds	$	7.1	$	8.5	$	7.5
AFUDC equity funds	14.9		9.1		—
Total	$	22.0	$	17.6	$	7.5
Evergy Metro
AFUDC borrowed funds	$	6.0	$	6.0	$	4.3
AFUDC equity funds	12.6		8.0		2.2
Total	$	18.6	$	14.0	$	6.5

The average rates used in the calculation of AFUDC are detailed in the following table.


	2021	2020	2019
Evergy Kansas Central	4.9%	4.7%	3.0%
Evergy Metro	5.6%	5.2%	4.6%
Evergy Missouri West	2.6%	3.5%	3.7%

When property units are retired or otherwise disposed, the original cost, net of salvage, is charged to accumulated depreciation. Repair of property and replacement of items not considered to be units of property are expensed as incurred, except for planned refueling and maintenance outages at Wolf Creek Generating Station (Wolf Creek). As authorized by regulators, the incremental maintenance cost incurred for such outages is deferred and amortized to expense ratably over the period between planned outages.

Depreciation and Amortization

Depreciation and amortization of utility plant other than nuclear fuel is computed using the straight-line method over the estimated lives of depreciable property based on rates approved by state regulatory authorities. Annual depreciation rates average approximately 3%. See Note 7 for more details. Nuclear fuel is amortized to fuel expense based on the quantity of heat produced during the generation of electricity.

The depreciable lives of Evergy's, Evergy Kansas Central's and Evergy Metro's property, plant and equipment are detailed in the following table.


	Evergy			Evergy Kansas Central				Evergy Metro
	(years)
Generating facilities	8	to	87		8	to	87	20	to	60
Transmission facilities	15	to	94		36	to	94	15	to	70
Distribution facilities	8	to	73		19	to	73	8	to	55
Other	5	to	84		7	to	84	5	to	50

Plant to be Retired, Net

When the Evergy Companies retire utility plant, the original cost, net of salvage, is charged to accumulated depreciation. However, when it becomes probable an asset will be retired significantly in advance of its original expected useful life and in the near term, the cost of the asset and related accumulated depreciation is recognized as a separate asset and a probable abandonment. If the asset is still in service, the net amount is classified as plant to

be retired, net on the consolidated balance sheets. If the asset is no longer in service, the net amount is classified as a regulatory asset on the consolidated balance sheets.

The Evergy Companies must also assess the probability of full recovery of the remaining net book value of the abandonment. The net book value that may be retained as an asset on the balance sheet for the abandonment is dependent upon amounts that may be recovered through regulated rates, including any return. An impairment charge, if any, would equal the difference between the remaining net book value of the asset and the present value of the future revenues expected from the asset.

Evergy Missouri West has determined that its November 2018 retirement of Sibley No. 3 Unit meets the criteria to be considered an abandonment. As of December 31, 2021, Evergy has classified the remaining Sibley No. 3 Unit net book value of $123.4 million as retired generation facilities within regulatory assets on its consolidated balance sheet. This regulatory asset is reduced by approximately $9 million of annual amortization expense, which is an amount equal to the annual depreciation expense for the asset reflected in retail rates.

In October 2019, the Missouri Public Service Commission (MPSC) granted the request of certain intervenors for an Accounting Authority Order (AAO) that requires Evergy Missouri West to record a regulatory liability for all revenues collected from customers for return on investment, non-fuel operations and maintenance costs, taxes including accumulated deferred income taxes and all other costs associated with Sibley Station following the station's retirement in November 2018 for consideration in Evergy Missouri West's current rate case, which was filed in January 2022. See Note 4 for additional information regarding the AAO and Evergy Missouri West's current rate case.

Evergy Missouri West expects that the MPSC's decision in its current rate case regarding the AAO could impact the valuation of its regulatory asset for retired generation facilities but as of December 31, 2021, has concluded that no impairment is required based on the relevant facts and circumstances.

Nuclear Plant Decommissioning Costs

Nuclear plant decommissioning cost estimates are based on either the immediate dismantlement method or the deferred dismantling method as determined by the State Corporation Commission of the State of Kansas (KCC) and MPSC and include the costs of decontamination, dismantlement and site restoration. Based on these cost estimates, Evergy Kansas Central and Evergy Metro each contribute to a tax-qualified trust fund to be used to decommission Wolf Creek. Related liabilities for decommissioning are included on Evergy's, Evergy Kansas Central's and Evergy Metro's consolidated balance sheets in asset retirement obligations (AROs).

As a result of the authorized regulatory treatment and related regulatory accounting, differences between the fair value of the assets held in the nuclear decommissioning trust and the amounts recorded for the accumulated accretion and depreciation expense associated with the decommissioning ARO are recorded as a regulatory liability on Evergy's, Evergy Kansas Central's and Evergy Metro's consolidated balance sheets. See Note 6 for discussion of AROs including those associated with nuclear plant decommissioning costs.

Regulatory Accounting

Accounting standards are applied that recognize the economic effects of rate regulation. Accordingly, regulatory assets and liabilities have been recorded when required by a regulatory order or based on regulatory precedent. See Note 4 for additional information concerning regulatory matters.

Cash Surrender Value of Life Insurance

Amounts related to corporate-owned life insurance (COLI) are recorded on the consolidated balance sheets in other long-term assets and are detailed in the following table for Evergy. Substantially all of Evergy's COLI-related balances relate to Evergy Kansas Central's COLI activity.


	December 31
	2021		2020
Evergy	(millions)
Cash surrender value of policies	$	1,363.0	$	1,369.6
Borrowings against policies	(1,232.3)		(1,237.6)
Corporate-owned life insurance, net	$	130.7	$	132.0

Increases in cash surrender value and death benefits are recorded in other income in the Evergy Companies' consolidated statements of income and comprehensive income. Interest expense incurred on policy loans is offset against the policy income. Income from death benefits is highly variable from period to period.

Fair Value of Financial Instruments

The following methods and assumptions were used to estimate the fair value of the following financial instruments for which it was practicable to estimate that value.

Nuclear decommissioning trust fund - The Evergy Companies' nuclear decommissioning trust fund assets are recorded at fair value based on quoted market prices of the investments held by the fund and/or valuation models.

Pension plans - For financial reporting purposes, the market value of plan assets is the fair value based on quoted market prices of the investments held by the fund and/or valuation models.

Revenue Recognition

The Evergy Companies recognize revenue on the sale of electricity to customers over time as the service is provided in the amount they have the right to invoice. Revenues recorded include electric services provided but not yet billed by the Evergy Companies. Unbilled revenues are recorded for kWh usage in the period following the customers' billing cycle to the end of the month. This estimate is based on net system kWh usage less actual billed kWhs. The Evergy Companies' estimated unbilled kWhs are allocated and priced by regulatory jurisdiction across the rate classes based on actual billing rates. The Evergy Companies' unbilled revenue estimate is affected by factors including fluctuations in energy demand, weather, line losses and changes in the composition of customer classes. See Note 3 for the balance of unbilled receivables for each of Evergy, Evergy Kansas Central and Evergy Metro as of December 31, 2021 and 2020.

The Evergy Companies also collect sales taxes and franchise fees from customers concurrent with revenue-producing activities that are levied by state and local governments. These items are excluded from revenue, and thus are not reflected on the consolidated statements of income and comprehensive income for Evergy, Evergy Kansas Central and Evergy Metro.

See Note 2 for additional details regarding revenue recognition from sales of electricity by the Evergy Companies.

Allowance for Credit Losses

Historical loss information generally provides the basis for the Evergy Companies' assessment of expected credit losses. The Evergy Companies use an aging of accounts receivable method to assess historical loss information. When historical experience may not fully reflect the Evergy Companies' expectations about the future, the Evergy Companies will adjust historical loss information, as necessary, to reflect the current conditions and reasonable and supportable forecasts not already reflected in the historical loss information.

Receivables are charged off when they are deemed uncollectible, which is based on a number of factors including specific facts surrounding an account and management's judgment.

Asset Impairments

Long-lived assets and finite-lived intangible assets subject to amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If the sum of the undiscounted expected future cash flows from an asset to be held and used is less than the carrying value of the asset, an asset impairment must be recognized in the financial statements. The amount of impairment recognized is the excess of the carrying value of the asset over its fair value.

Goodwill and indefinite lived intangible assets are tested for impairment annually and when an event occurs indicating the possibility that an impairment exists. The annual test must be performed at the same time each year. The goodwill impairment test consists of comparing the fair value of a reporting unit to its carrying amount, including goodwill, to identify potential impairment. In the event that the carrying amount exceeds the fair value of the reporting unit, an impairment loss is recognized for the difference between the carrying amount of the reporting unit and its fair value. See Note 5 for additional details on goodwill.

Income Taxes

Income taxes are accounted for using the asset/liability approach. Deferred tax assets and liabilities are determined based on the temporary differences between the financial reporting and tax bases of assets and liabilities, applying enacted statutory tax rates in effect for the year in which the differences are expected to reverse. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion of the deferred tax assets will not be realized.

The Evergy Companies recognize tax benefits based on a "more-likely-than-not" recognition threshold. In addition, the Evergy Companies recognize interest accrued related to unrecognized tax benefits in interest expense and penalties in operating expenses.

Evergy files a consolidated federal income tax return as well as unitary and combined income tax returns in several state jurisdictions with Kansas and Missouri being the most significant. Income taxes for consolidated or combined subsidiaries are allocated to the subsidiaries based on separate company computations of income or loss. Evergy Kansas Central's and Evergy Metro's income tax provisions include taxes allocated based on their separate company's income or loss.

The Evergy Companies have established a net regulatory liability for future refunds to be made to customers for amounts collected from customers in excess of income taxes in current rates. Tax credits are recognized in the year generated except for certain Evergy Kansas Central, Evergy Metro and Evergy Missouri West investment tax credits that have been deferred and amortized over the remaining service lives of the related properties.

Other Income (Expense), Net

In 2021, Evergy's investment earnings included a $27.7 million unrealized gain related to Evergy’s investment in an early-stage energy solutions company. See “Evergy Equity Investment” in this Note 1 for further information.

The Evergy Companies’ other income includes income from AFUDC equity funds. See “Property, Plant and Equipment” in this Note 1 for these amounts for 2021, 2020 and 2019.

The table below shows the detail of other expense for each of the Evergy Companies.


	2021		2020		2019
Evergy	(millions)
Non-service cost component of net benefit cost	$	(55.6)	$	(58.6)	$	(55.6)
Other	(31.8)		(19.6)		(21.3)
Other expense	$	(87.4)	$	(78.2)	$	(76.9)
Evergy Kansas Central
Non-service cost component of net benefit cost	$	(15.6)	$	(21.2)	$	(20.1)
Other	(20.3)		(17.7)		(20.0)
Other expense	$	(35.9)	$	(38.9)	$	(40.1)
Evergy Metro
Non-service cost component of net benefit cost	$	(26.7)	$	(24.2)	$	(20.9)
Other	(2.7)		(1.3)		(0.5)
Other expense	$	(29.4)	$	(25.5)	$	(21.4)

Earnings Per Share

To compute basic earnings per share (EPS), Evergy divides net income attributable to Evergy, Inc. by the weighted average number of common shares outstanding. Diluted EPS includes the effect of issuable common shares resulting from restricted share units (RSUs), restricted stock and a warrant. Evergy computes the dilutive effects of potential issuances of common shares using the treasury stock method or the contingently issuable share method, as applicable.

The following table reconciles Evergy's basic and diluted EPS.


	2021		2020		2019
Income	(millions, except per share amounts)
Net income	$	891.9	$	630.0	$	685.6
Less: Net income attributable to noncontrolling interests	12.2		11.7		15.7
Net income attributable to Evergy, Inc.	$	879.7	$	618.3	$	669.9
Common Shares Outstanding
Weighted average number of common shares outstanding - basic	229.0		227.2		239.5
Add: effect of dilutive securities	0.6		0.3		0.4
Diluted average number of common shares outstanding	229.6		227.5		239.9
Basic EPS	$	3.84	$	2.72	$	2.80
Diluted EPS	$	3.83	$	2.72	$	2.79

There were no anti-dilutive securities excluded from the computation of diluted EPS for 2021. Anti-dilutive shares excluded from the computation of diluted EPS for 2020 and 2019 were 127,884 RSUs and 785 RSUs, respectively.

Supplemental Cash Flow Information


Year Ended December 31	2021		2020		2019
Evergy	(millions)
Cash paid for (received from):
Interest, net of amount capitalized	$	356.9	$	367.6	$	329.5
Interest of VIEs	0.2		0.8		1.6
Income taxes, net of refunds	(19.6)		(46.5)		(5.2)
Non-cash investing transactions:
Property, plant and equipment additions	269.3		463.3		186.0
Non-cash financing transactions:
Issuance of stock for compensation and reinvested dividends	0.7		0.9		(0.3)


Year Ended December 31	2021		2020		2019
Evergy Kansas Central	(millions)
Cash paid for (received from):
Interest, net of amount capitalized	$	149.3	$	157.5	$	143.0
Interest of VIEs	0.2		0.8		1.6
Income taxes, net of refunds	37.5		4.7		29.9
Non-cash investing transactions:
Property, plant and equipment additions	101.9		235.4		92.1


Year Ended December 31	2021		2020		2019
Evergy Metro	(millions)
Cash paid for (received from):
Interest, net of amount capitalized	$	110.8	$	109.9	$	118.4
Income taxes, net of refunds	36.6		4.8		77.0
Non-cash investing transactions:
Property, plant and equipment additions	102.2		192.5		80.7

Non-cash property, plant and equipment additions in 2020 for Evergy, Evergy Kansas Central and Evergy Metro include a non-cash addition related to the revision in estimate of the Wolf Creek ARO liability in the third quarter of 2020. See Note 6 for more details.

Dividends Declared

In February 2022, Evergy's Board of Directors (Evergy Board) declared a quarterly dividend of $0.5725 per share on Evergy's common stock. The common dividend is payable March 21, 2022, to shareholders of record as of March 7, 2022.

In February 2022, Evergy Kansas Central's Board of Directors declared a cash dividend to Evergy of up to $25.0 million, payable on March 18, 2022.

February 2021 Winter Weather Event

In February 2021, much of the central and southern United States, including the service territories of the Evergy Companies, experienced a significant winter weather event that resulted in extremely cold temperatures over a multi-day period (February 2021 winter weather event). The February 2021 winter weather event resulted in an increase in the demand for natural gas used by the Evergy Companies for generating electricity and also contributed to the limited availability of other generation resources, including coal and renewables, within the SPP Integrated Marketplace. The Evergy Companies are members of the SPP and, as a result, principally sell and purchase power for the Evergy Companies' retail electric customers through the SPP Integrated Marketplace. These circumstances

resulted in higher than normal market prices for both natural gas and power for the duration of the February 2021 winter weather event. These higher than normal market prices also included make-whole payments calculated by the SPP to compensate natural gas generators within the SPP Integrated Marketplace for costs incurred in excess of revenues. As part of the February 2021 winter weather event and inclusive of the aforementioned items, Evergy incurred natural gas and purchased power costs, net of wholesale revenues, of $365.5 million. This $365.5 million of net fuel and purchased power costs was primarily driven by $296.4 million of costs at Evergy Missouri West and $133.9 million of costs at Evergy Kansas Central, partially offset by $64.8 million of net wholesale revenues at Evergy Metro. The amount of purchased power costs incurred by the Evergy Companies during the February 2021 winter weather event is subject to resettlement activity and further review by the SPP. This review and any subsequent resettlement activity could result in increases or decreases to the final amount of purchased power costs incurred by the Evergy Companies during the February 2021 winter weather event and these changes could be material.

The Evergy Companies have fuel recovery mechanisms in their Kansas and Missouri jurisdictions, as applicable, that allow them to defer substantially all of any increased fuel and purchased power costs, net of wholesale revenues, to a regulatory asset or liability for future recovery from or refund to customers. Further, in February 2021, the KCC issued an emergency AAO that allowed Evergy Kansas Central and Evergy Metro's Kansas jurisdiction to defer to a regulatory asset any extraordinary costs, including carrying costs, incurred to provide electric service during the February 2021 winter weather event for consideration in future rate proceedings. Additionally, in June 2021, Evergy Metro and Evergy Missouri West filed a joint request for an AAO with the MPSC that would allow for the extraordinary costs and revenues to provide service during the February 2021 winter weather event, including carrying costs, to be deferred to a regulatory asset or a regulatory liability for consideration in future proceedings. See Note 4 for additional information regarding the AAOs.

As of December 31, 2021, the Evergy Companies have deferred substantially all of the fuel and purchased power costs, net of wholesale revenues, related to the February 2021 winter weather event to a regulatory asset or liability pursuant to the mechanisms discussed above. While the Evergy Companies expect to recover substantially all of any increased fuel and purchased power costs related to the February 2021 winter weather event from customers, the timing of the cost recovery could be delayed or spread over a longer than typical recovery timeframe by the KCC or the MPSC to help moderate monthly customer bill impacts given the extraordinary nature of the February 2021 winter weather event.

The Evergy Companies also engage in limited non-regulated energy marketing activities in various regional power markets that have historically not had a significant impact on the Evergy Companies' results of operations. These energy marketing margins are recorded net in operating revenues on the Evergy Companies' statements of income and comprehensive income. As a result of the elevated market prices experienced in regional power markets across the central and southern United States driven by the February 2021 winter weather event discussed above, Evergy and Evergy Kansas Central recorded $94.5 million of energy marketing margins in 2021 related to the February 2021 winter weather event, primarily driven by activities in the Electric Reliability Council of Texas (ERCOT).

Evergy Equity Investment

From time to time, Evergy makes limited equity investments in early-stage energy solution companies. These investments have historically not had a significant impact on Evergy's results of operations. In October 2021, an equity investment in which Evergy held a minority stake through an initial investment of $3.7 million was acquired through a transaction involving a special purpose acquisition company (SPAC). As a result of its equity investment in the company that was acquired in the SPAC transaction, Evergy received shares of the resulting public company upon the closing of the transaction, which are subject to a restriction on sale of up for 150 days. Evergy recorded a $27.7 million unrealized gain in the fourth quarter of 2021 for the conversion of its shares into the newly formed public company and based on the closing share price as of December 31, 2021 adjusted to reflect the restriction on the sale of the shares. The fair value of Evergy's investment is largely dependent on the performance of the new public company's stock, which is subject to significant market volatility and is also affected by the restriction on sale of the shares until March 2022, when the restriction expires.

REVENUE

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

REVENUE

Evergy's, Evergy Kansas Central's and Evergy Metro's revenues disaggregated by customer class are summarized in the following tables.


Evergy

	2021		2020		2019
Revenues	(millions)
Residential	$	1,918.3	$	1,909.2	$	1,908.1
Commercial	1,681.3		1,641.7		1,781.6
Industrial	597.0		588.7		621.6
Other retail	33.1		38.5		47.1
Total electric retail	$	4,229.7	$	4,178.1	$	4,358.4
Wholesale	717.2		264.0		327.5
Transmission	356.8		318.5		309.2
Industrial steam and other	25.4		21.0		24.5
Total revenue from contracts with customers	$	5,329.1	$	4,781.6	$	5,019.6
Other	257.6		131.8		128.2
Operating revenues	$	5,586.7	$	4,913.4	$	5,147.8


Evergy Kansas Central

	2021		2020		2019
Revenues	(millions)
Residential	$	824.1	$	801.2	$	793.9
Commercial	694.1		665.6		709.1
Industrial	391.7		379.9		401.3
Other retail	17.1		17.7		21.0
Total electric retail	$	1,927.0	$	1,864.4	$	1,925.3
Wholesale	453.1		215.4		239.9
Transmission	322.9		287.3		273.3
Other	2.2		2.3		5.8
Total revenue from contracts with customers	$	2,705.2	$	2,369.4	$	2,444.3
Other	142.1		48.7		63.1
Operating revenues	$	2,847.3	$	2,418.1	$	2,507.4


Evergy Metro

	2021		2020		2019
Revenues	(millions)
Residential	$	691.9	$	714.7	$	712.4
Commercial	713.3		717.1		786.1
Industrial	122.0		128.8		136.9
Other retail	9.2		11.7		16.3
Total electric retail	$	1,536.4	$	1,572.3	$	1,651.7
Wholesale	242.6		35.0		70.9
Transmission	17.1		13.9		17.5
Other	3.6		2.6		2.8
Total revenue from contracts with customers	$	1,799.7	$	1,623.8	$	1,742.9
Other	114.0		81.8		63.6
Operating revenues	$	1,913.7	$	1,705.6	$	1,806.5

Retail Revenues

The Evergy Companies' retail revenues are generated by the regulated sale of electricity to their residential, commercial and industrial customers within their franchised service territories. The Evergy Companies recognize revenue on the sale of electricity to their customers over time as the service is provided in the amount they have a right to invoice. Retail customers are billed monthly at the tariff rates approved by the KCC and MPSC based on customer kWh usage.

Revenues recorded include electric services provided but not yet billed by the Evergy Companies. Unbilled revenues are recorded for kWh usage in the period following the customers' billing cycle to the end of the month. This estimate is based on net system kWh usage less actual billed kWhs. The Evergy Companies' estimated unbilled kWhs are allocated and priced by regulatory jurisdiction across the rate classes based on actual billing rates.

The Evergy Companies also collect sales taxes and franchise fees from customers concurrent with revenue-producing activities that are levied by state and local governments. These items are excluded from revenue, and thus not reflected on the statements of income and comprehensive income, for Evergy, Evergy Kansas Central and Evergy Metro.

Wholesale Revenues

The Evergy Companies' wholesale revenues are generated by the sale of wholesale power and capacity in circumstances when the power that the Evergy Companies generate is not required for customers in their service territory. These sales primarily occur within the SPP Integrated Marketplace. The Evergy Companies also purchase power from the SPP Integrated Marketplace and record sale and purchase activity on a net basis in wholesale revenue or fuel and purchased power expense. In addition, the Evergy Companies sell wholesale power and capacity through bilateral contracts to other counterparties, such as electric cooperatives, municipalities and other electric utilities.

For both wholesale sales to the SPP Integrated Marketplace and through bilateral contracts, the Evergy Companies recognize revenue on the sale of wholesale electricity to their customers over time as the service is provided in the amount they have a right to invoice.

Wholesale sales within the SPP Integrated Marketplace are billed weekly based on the fixed transaction price determined by the market at the time of the sale and the MWh quantity purchased. Wholesale sales from bilateral contracts are billed monthly based on the contractually determined transaction price and the kWh quantity purchased.

Transmission Revenues

The Evergy Companies' transmission revenues are generated by the use of their transmission networks by the SPP. To enable optimal use of the diverse generating resources in the SPP region, the Evergy Companies, as well as other transmission owners, allow the SPP to access and operate their transmission networks. As new transmission lines are constructed, they are included in the transmission network available to the SPP. In exchange for providing access, the SPP pays the Evergy Companies consideration determined by formula rates approved by the Federal Energy Regulatory Commission (FERC), which include the cost to construct and maintain the transmission lines and a return on investment. The price for access to the Evergy Companies' transmission networks are updated annually based on projected costs. Projections are updated to actual costs and the difference is included in subsequent year's prices.

The Evergy Companies have different treatment for their legacy transmission facilities within the SPP, which results in different levels of transmission revenue being received from the SPP. Evergy Kansas Central's transmission revenues from SPP include amounts that Evergy Kansas Central pays to the SPP on behalf of its retail electric customers for the use of Evergy Kansas Central's legacy transmission facilities. These transmission revenues are mostly offset by SPP network transmission cost expense that Evergy Kansas Central pays on behalf of its retail customers. Evergy Metro and Evergy Missouri West do not pay the SPP for their retail customers’ use of the Evergy Metro and Evergy Missouri West legacy transmission facilities and correspondingly, their transmission revenues also do not reflect the associated transmission revenue from the SPP.

The Evergy Companies recognize revenue on the sale of transmission service to their customers over time as the service is provided in the amount they have a right to invoice. Transmission service to the SPP is billed monthly based on a fixed transaction price determined by FERC formula transmission rates along with other SPP-specific charges and the MW quantity purchased.

Industrial Steam and Other Revenues

Evergy's industrial steam and other revenues are primarily generated by the regulated sale of industrial steam to Evergy Missouri West's steam customers. Evergy recognizes revenue on the sale of industrial steam to its customers over time as the service is provided in the amount that it has the right to invoice. Steam customers are billed on a monthly basis at the tariff rate approved by the MPSC based on customer MMBtu usage.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-URI http://asc.fasb.org/topic&trid=49130388

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130551-203045

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130556-203045

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130550-203045

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130558-203045

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045

+ Details

RECEIVABLES

12 Months Ended

Dec. 31, 2021

Receivables [Abstract]

RECEIVABLES

The Evergy Companies' receivables are detailed in the following table.



	December 31
	2021		2020
Evergy	(millions)
Customer accounts receivable - billed	$	13.7	$	5.3
Customer accounts receivable - unbilled	80.1		110.0
Other receivables	160.7		177.9
Allowance for credit losses	(32.9)		(19.3)
Total	$	221.6	$	273.9
Evergy Kansas Central
Customer accounts receivable - billed	$	9.7	$	—
Customer accounts receivable - unbilled	26.4		50.7
Other receivables	178.5		175.7
Allowance for credit losses	(13.0)		(7.5)
Total	$	201.6	$	218.9
Evergy Metro
Customer accounts receivable - billed	$	2.7	$	3.3
Customer accounts receivable - unbilled	25.9		27.9
Other receivables	15.7		21.9
Allowance for credit losses	(13.3)		(8.1)
Total	$	31.0	$	45.0

The Evergy Companies' other receivables at December 31, 2021 and 2020, consisted primarily of receivables from partners in jointly-owned electric utility plants, wholesale sales receivables and receivables related to alternative revenue programs. The Evergy Companies' other receivables also included receivables from contracts with customers as summarized in the following table.



	December 31
	2021		2020
	(millions)
Evergy	$	63.7	$	57.5
Evergy Kansas Central	62.6		49.9
Evergy Metro	0.5		6.9

The change in the Evergy Companies' allowance for credit losses is summarized in the following table.


	2021		2020
Evergy	(millions)
Beginning balance January 1	$	19.3	$	10.5
Credit loss expense	28.0		24.9
Write-offs	(26.4)		(28.6)
Recoveries of prior write-offs	12.0		12.5
Ending balance December 31	$	32.9	$	19.3
Evergy Kansas Central
Beginning balance January 1	$	7.5	$	3.8
Credit loss expense	12.0		11.1
Write-offs	(11.0)		(10.0)
Recoveries of prior write-offs	4.5		2.6
Ending balance December 31	$	13.0	$	7.5
Evergy Metro
Beginning balance January 1	$	8.1	$	4.6
Credit loss expense	10.5		9.0
Write-offs	(10.6)		(12.4)
Recoveries of prior write-offs	5.3		6.9
Ending balance December 31	$	13.3	$	8.1

Sale of Accounts Receivable

Evergy Kansas Central, Evergy Metro and Evergy Missouri West sell an undivided percentage ownership interest in their retail electric accounts receivable to independent outside investors. These sales are accounted for as secured borrowings with accounts receivable pledged as collateral and a corresponding short-term collateralized note payable recognized on the balance sheets. The Evergy Companies' accounts receivable pledged as collateral and the corresponding short-term collateralized note payable are summarized in the following table.



	December 31
	2021		2020
	(millions)
Evergy	$	319.0	$	360.0
Evergy Kansas Central	153.0		180.0
Evergy Metro	116.0		130.0

Each receivable sale facility expires in 2024. Evergy Kansas Central's facility allows for $185.0 million in aggregate outstanding principal amount of borrowings from mid-October through mid-June and then $200.0 million from mid-June through mid-October. Evergy Metro's facility allows for $130.0 million in aggregate outstanding principal amount of borrowings at any time. Evergy Missouri West's facility allows for $50.0 million in aggregate outstanding principal amount of borrowings from mid-November through mid-June and then $65.0 million from mid-June through mid-November.

RATE MATTERS AND REGULATION

12 Months Ended

Dec. 31, 2021

Regulated Operations [Abstract]

RATE MATTERS AND REGULATION

KCC Proceedings

Evergy Kansas Central 2021 Transmission Delivery Charge (TDC)

In April 2021, the KCC issued an order adjusting Evergy Kansas Central's retail prices to include updated transmission costs as reflected in the FERC transmission formula rate (TFR). The new prices were effective in April 2021 and are expected to increase Evergy Kansas Central's annual retail revenues by $37.9 million when compared to 2020.

Evergy Metro 2021 TDC

In April 2021, the KCC issued an order adjusting Evergy Metro's retail prices to include updated transmission costs as reflected in the FERC TFR. The new prices were effective in May 2021 and are expected to decrease Evergy Metro's annual retail revenues by $2.4 million when compared to 2020.

Evergy Kansas Central and Evergy Metro Earnings Review and Sharing Plan (ERSP)

As part of their merger settlement agreement with the KCC, Evergy Kansas Central and Evergy Metro agreed to participate in an ERSP for the years 2019 through 2022. Under the ERSP, Evergy Kansas Central's and Evergy Metro's Kansas jurisdiction are required to refund to customers 50% of annual earnings in excess of their authorized return on equity of 9.3% to the extent the excess earnings exceed the amount of annual bill credits that Evergy Kansas Central and Evergy Metro agreed to provide in connection with the merger that resulted in the formation of Evergy.

Evergy Kansas Central's and Evergy Metro's 2020 calculations of annual earnings did not result in a significant refund obligation. As of December 31, 2021, Evergy Kansas Central estimates its 2021 annual earnings will not result in a refund obligation. As of December 31, 2021, Evergy Metro estimates its 2021 annual earnings will result in a $2.0 million refund obligation. The final refund obligations for 2021 will be decided by the KCC and could vary from the current estimates.

Evergy Kansas Central and Evergy Metro February 2021 Winter Weather Event AAO

In February 2021, the KCC issued an emergency AAO directing all Kansas-jurisdictional natural gas and electric utilities, including Evergy Kansas Central and Evergy Metro, to defer to a regulatory asset or regulatory liability any extraordinary costs or revenues, including carrying costs, to provide electric service during the February 2021 winter weather event for consideration in future rate proceedings.

As of December 31, 2021, Evergy Kansas Central had recognized a regulatory asset pursuant to the AAO of $121.5 million related to its costs incurred during the February 2021 winter weather event, primarily consisting of increased fuel and purchased power costs. As of December 31, 2021, Evergy Metro's Kansas jurisdiction had recognized a regulatory liability of $39.5 million related to its increased wholesale revenues during the February 2021 winter weather event.

In July 2021, Evergy Kansas Central and Evergy Metro made a joint filing with the KCC regarding the timing and method of recovery or refund for costs and revenues deferred pursuant to the February 2021 winter weather event AAO. In the filing, Evergy Kansas Central and Evergy Metro requested to recover or refund, as appropriate, their deferred February 2021 winter weather event amounts to customers through their fuel recovery mechanisms over two years and one year, respectively, beginning in April 2022. As part of the filing, Evergy Metro also requested an approximately $6 million decrease to its February 2021 winter weather event refund to Kansas customers, which is not currently reflected in its regulatory liability for the February 2021 winter weather event, for jurisdictional allocation differences in its Kansas and Missouri fuel recovery mechanisms.

In January 2022, KCC staff filed their report and recommendation regarding the February 2021 winter weather event and the related costs and revenues deferred by Evergy Kansas Central and Evergy Metro as a result of the AAO granted by the KCC in February 2021. The report concluded that the costs incurred and revenues earned by Evergy Kansas Central and Evergy Metro during the February 2021 winter weather event were prudent. The KCC staff also recommended the following: (1) that Evergy Metro extend the time period of its refund to customers from one year to two years; (2) that the KCC reject the approximately $6 million reduction in refund to customers requested by Evergy Metro due to jurisdictional allocation differences in its Kansas and Missouri fuel recovery mechanisms and (3) that Evergy Metro and the other active parties in the case work to determine the appropriate level of carrying charges that should apply to the amounts deferred related to the February 2021 winter weather event.

A decision by the KCC regarding Evergy Kansas Central’s and Evergy Metro’s joint filing is expected in the first half of 2022.

Lawrence Energy Center (LEC) Unit 4 Securitization

In April 2021, the state of Kansas passed the Utility Financing and Securitization Act (UFSA) which allows certain public utilities, including Evergy Kansas Central and Evergy Metro, to securitize utility assets in order to recover energy transition costs relating to the early retirement of certain generating assets. To recover the energy transition costs through securitization as allowed in the UFSA, a public utility must obtain a predetermination order from the KCC finding that the retirement of the subject generation facility is reasonable. Upon the receipt of a successful predetermination order, the public utility must then file an application with the KCC for a financing order to issue securitized bonds to recover the energy transition costs. The UFSA also allows the pursuit of securitization to help finance qualified extraordinary expenses, such as fuel costs incurred during extreme weather events.

In September 2021, Evergy Kansas Central filed a predetermination request with the KCC for the ratemaking principles and treatment related to its planned investment in approximately 190 MW of solar generation and the planned retirement of coal-fired LEC Unit 4 and related coal-handling facilities for LEC Units 4 and 5, both of which are expected to occur between December 2023 and the first half of 2024. In February 2022, Evergy Kansas Central withdrew its predetermination request with the KCC in order to finalize definitive documentation associated with the solar investment and to develop additional information to enable the KCC to evaluate its predetermination request. Evergy Kansas Central anticipates refiling its predetermination request, including this additional information, later in 2022.

If the KCC finds that Evergy Kansas Central's planned retirement of LEC Unit 4 and investment in 190 MW of solar generation is prudent as part of a predetermination request, Evergy Kansas Central then plans to file an application with the KCC for a financing order authorizing the issuance of securitized bonds to recover energy transition costs associated with the retirement of LEC Unit 4 and the related coal-handling facilities for LEC Units 4 and 5.

MPSC Proceedings

Evergy Metro 2022 Rate Case Proceeding

In January 2022, Evergy Metro filed an application with the MPSC to request an increase to its retail revenues of $43.9 million before rebasing fuel and purchased power expense, with a return on equity of 10% and a rate-making equity ratio of 51.19%. The request reflects increases related to higher property taxes and the recovery of infrastructure investments made to improve reliability and enhance customer service and were also partially offset by significant customer savings and cost reductions created since the Great Plains Energy and Evergy Kansas Central merger in 2018. Evergy Metro also requested an additional $3.8 million increase associated with rebasing fuel and purchased power expense as well as the implementation of tracking mechanisms for both property tax expense and credit loss expense and the creation of a storm reserve as part of its application with the MPSC.

An evidentiary hearing in the case is expected to occur in September 2022 and new rates are expected to be effective in December 2022.

Evergy Missouri West 2022 Rate Case Proceeding

In January 2022, Evergy Missouri West filed an application with the MPSC to request an increase to its retail revenues of $27.7 million before rebasing fuel and purchased power expense, with a return on equity of 10% and a rate-making equity ratio of 51.81%. The request reflects increases related to higher property taxes and the recovery of infrastructure investments made to improve reliability and enhance customer service and were also partially offset by significant customer savings and cost reductions created since the Great Plains Energy and Evergy Kansas Central merger in 2018. Evergy Missouri West also requested an additional $32.1 million increase associated with rebasing fuel and purchased power expense, the implementation of tracking mechanisms for both property tax expense and credit loss expense, the creation of a storm reserve, and the full return of and return on its unrecovered investment related to the 2018 retirement of Sibley Station as part of its application with the MPSC.

An evidentiary hearing in the case is expected to occur in September 2022 and new rates are expected to be effective in December 2022.

Evergy Missouri West Other Proceedings

In December 2018, the Office of the Public Counsel (OPC) and the Midwest Energy Consumers Group (MECG) filed a petition with the MPSC requesting an AAO that would require Evergy Missouri West to record a regulatory liability for all revenues collected from customers for return on investment, non-fuel operations and maintenance costs, taxes including accumulated deferred income taxes, and all other costs associated with Sibley Station following the station’s retirement in November 2018.

In October 2019, the MPSC granted OPC's and MECG's request for an AAO and required Evergy Missouri West to record a regulatory liability for the revenues discussed above for consideration in Evergy Missouri West's current rate case. Depending on the MPSC's decision in the current rate case, Evergy Missouri West could be required to refund to customers all or a portion of amounts collected in revenue for Sibley Station since December 2018 or, alternatively, could be required to make no refunds. As part of its current rate case, Evergy Missouri West is proposing to refund to customers the revenues collected from customers for non-fuel operations and maintenance costs and other costs associated with Sibley Station following the station's retirement but not the return on investment.

As a result of the MPSC order, Evergy has recorded a regulatory liability of $29.3 million as of December 31, 2021 for the estimated amount of revenues that Evergy Missouri West has collected from customers for Sibley Station since December 2018 that Evergy has determined is probable of refund. Evergy expects that it will continue to defer such amounts as collected from customers until new rates become effective in Evergy Missouri West's current rate case.

The accrual for this estimated amount does not include certain revenues collected related to Sibley Station that Evergy has determined to not be probable of refund in the current rate case based on the relevant facts and circumstances. Although Evergy has determined these additional revenues to not be probable of refund, the ultimate resolution of this matter in Evergy Missouri West's current rate case is uncertain and could result in an estimated loss of approximately $50 million when new rates are expected to become effective in December 2022. Evergy's regulatory liability for probable refunds as of December 31, 2021 and estimated loss in excess of the amount accrued represent estimates that could change significantly based on ongoing developments including decisions in other regulatory proceedings that establish precedent applicable to this matter and positions of parties on this issue in Evergy Missouri West's 2022 rate case.

Evergy Metro and Evergy Missouri West February 2021 Winter Weather Event AAO

In June 2021, Evergy Metro and Evergy Missouri West filed a joint request for an AAO with the MPSC that would allow Evergy Metro and Evergy Missouri West to defer to a regulatory asset or regulatory liability any extraordinary costs or revenues, including carrying costs, to provide electric service during the February 2021 winter weather event for consideration in future proceedings.

Evergy Metro and Evergy Missouri West have currently deferred substantially all of their fuel and purchased power costs, net of wholesale revenues, related to the February 2021 winter weather event to a regulatory asset or liability pursuant to their ability to recover or refund these amounts through their fuel recovery mechanisms, which allow for the recovery or refund of 95% of increases in fuel and purchased power costs, net of wholesale revenues, above the amount included in base rates to customers. This AAO request is intended to address the recovery or refund of the February 2021 winter weather event amounts separate from the normal fuel recovery mechanism process given the extraordinary nature of the February 2021 winter weather event and to help moderate customer bill impacts. As of December 31, 2021, Evergy Metro's Missouri jurisdiction had recognized a regulatory liability of $25.6 million related to its increased wholesale revenues during the February 2021 winter weather event. As of December 31, 2021, Evergy Missouri West had recognized a regulatory asset of $281.6 million related to its costs incurred during the February 2021 winter weather event, primarily consisting of increased fuel and purchased power costs.

In the AAO filing, Evergy Metro requested to refund its deferred February 2021 winter weather event amounts to customers through its fuel recovery mechanism over one year, beginning in April 2022. In the same AAO filing, Evergy Missouri West requested to exclude its deferred February 2021 winter weather event amounts from recovery through its fuel recovery mechanism and indicated its intent to recover them through issuing securitized bonds

pursuant to the securitization legislation signed into law in Missouri in July 2021. As part of the filing, Evergy Metro also requested an approximately $5 million decrease to its February 2021 winter weather refund to Missouri customers, which is not currently reflected in its regulatory liability for the February 2021 winter weather event, for jurisdictional allocation differences in its Kansas and Missouri fuel recovery mechanisms and for the portion of net wholesale revenues not traditionally refundable because of the 5% sharing provision of its fuel recovery mechanism. Evergy Missouri West requested an approximately $15 million increase to its February 2021 winter weather event recovery from Missouri customers, which is not currently reflected in its regulatory asset for the February 2021 winter weather event, for the portion of net fuel and purchased power costs not traditionally recoverable because of the 5% sharing provision of its fuel recovery mechanism.

In September 2021, MPSC staff filed their recommendation regarding the February 2021 winter weather event and the related costs and revenues deferred by Evergy Metro and Evergy Missouri West. The MPSC staff recommended that the MPSC reject Evergy Metro’s AAO request, including the approximately $5 million reduction in refund to customers requested by Evergy Metro due to jurisdictional allocation differences in its Kansas and Missouri fuel recovery mechanisms, and refund the excess wholesale revenues from the February 2021 winter weather event to customers through its normal fuel recovery mechanism process. The MPSC staff recommended that the MPSC approve Evergy Missouri West’s AAO request, including the approximately $15 million of additional recovery requested related to the 5% sharing provision of its fuel recovery mechanism, but that the AAO deferral should not include carrying costs as they should be determined in a future ratemaking proceeding.

A decision by the MPSC regarding Evergy Metro’s and Evergy Missouri West’s joint request is expected in the first half of 2022.

FERC Proceedings

In October of each year, Evergy Kansas Central and Evergy Metro post an updated TFR that includes projected transmission capital expenditures and operating costs for the following year. This rate is the most significant component in the retail rate calculation for Evergy Kansas Central's and Evergy Metro's annual request with the KCC to adjust retail prices to include updated transmission costs through the TDC.

Evergy Kansas Central TFR

In the most recent three years, the updated TFR was expected to adjust Evergy Kansas Central's annual transmission revenues by approximately:

•$33.2 million increase effective in January 2022;

•$32.4 million increase effective in January 2021; and

•$6.8 million increase effective in January 2020.

Evergy Metro TFR

In the most recent three years, the updated TFR was expected to adjust Evergy Metro's annual transmission revenues by approximately:

•$18.1 million increase effective in January 2022;

•$3.9 million decrease effective in January 2021; and

•$1.7 million decrease effective in January 2020.

Regulatory Assets and Liabilities

The Evergy Companies have recorded assets and liabilities on their consolidated balance sheets resulting from the effects of the ratemaking process, which would not otherwise be recorded if they were not regulated. Regulatory assets represent incurred costs that are probable of recovery from future revenues. Regulatory liabilities represent future reductions in revenues or refunds to customers.

Management regularly assesses whether regulatory assets and liabilities are probable of future recovery or refund by considering factors such as decisions by the MPSC, KCC or FERC in Evergy Kansas Central's, Evergy Metro's and

Evergy Missouri West's rate case filings; decisions in other regulatory proceedings, including decisions related to other companies that establish precedent on matters applicable to the Evergy Companies; and changes in laws and regulations. If recovery or refund of regulatory assets or liabilities is not approved by regulators or is no longer deemed probable, these regulatory assets or liabilities are recognized in the current period results of operations. The Evergy Companies continued ability to meet the criteria for recording regulatory assets and liabilities may be affected in the future by restructuring and deregulation in the electric industry or changes in accounting rules. In the event that the criteria no longer applied to any or all of the Evergy Companies' operations, the related regulatory assets and liabilities would be written off unless an appropriate regulatory recovery mechanism were provided. Additionally, these factors could result in an impairment on utility plant assets.

The Evergy Companies' regulatory assets and liabilities are detailed in the following tables.


	December 31
	2021						2020
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Regulatory Assets	(millions)
Pension and post-retirement costs	$	567.2	$	265.6	$	213.3	$	867.8	$	412.9	$	359.9
Debt reacquisition costs	94.4		86.7		6.7		98.9		91.3		6.8
Debt fair value adjustment	96.5		—		—		104.0		—		—
Asset retirement obligations fair value adjustment	117.9		—		—		116.2		—		—
Depreciation	98.5		50.1		27.0		70.0		52.7		9.4
Cost of removal	257.5		141.0		90.2		183.4		125.7		57.7
Asset retirement obligations	119.3		52.3		49.1		170.8		55.0		84.0
Analog meter unrecovered investment	18.4		18.4		—		24.1		24.1		—
Treasury yield hedges	20.4		20.4		—		21.5		21.5		—
Iatan No. 1 and common facilities	6.5		—		2.7		6.9		—		2.8
Iatan No. 2 construction accounting costs	24.7		—		12.4		25.4		—		12.7
Kansas property tax surcharge	39.6		31.6		8.0		28.9		23.7		5.2
Disallowed plant costs	14.2		14.2		—		14.5		14.5		—
La Cygne environmental costs	11.2		9.0		2.2		12.4		10.1		2.3
Deferred customer programs	18.7		6.4		7.8		16.3		5.7		8.6
Fuel recovery mechanisms	202.5		120.8		19.8		26.2		1.2		17.7
February 2021 winter weather event	403.1		121.5		—		—		—		—
Solar rebates	20.2		—		—		25.9		—		1.5

Wolf Creek outage	20.4		10.2		10.2		10.0		5.0		5.0
Pension and other post-retirement benefit non-service costs	65.6		23.0		29.6		49.8		12.8		23.4
Retired generation facilities	123.4		—		—		128.4		—		—
Merger transition costs	32.7		15.6		12.1		37.6		18.0		13.9
Other regulatory assets	42.3		24.1		5.9		35.4		22.1		4.6
Total	2,415.2		1,010.9		497.0		2,074.4		896.3		615.5
Less: current portion	(424.1)		(257.3)		(86.3)		(206.2)		(96.2)		(82.0)
Total noncurrent regulatory assets	$	1,991.1	$	753.6	$	410.7	$	1,868.2	$	800.1	$	533.5


	December 31
	2021						2020
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Regulatory Liabilities	(millions)
Taxes refundable through future rates	$	1,969.5	$	1,143.7	$	616.1	$	2,055.7	$	1,184.5	$	650.2
Deferred regulatory gain from sale leaseback	42.6		42.6		—		48.1		48.1		—
Emission allowances	42.1		—		42.1		46.1		—		46.1
Nuclear decommissioning	400.1		175.7		224.4		319.7		138.2		181.5
Pension and post-retirement costs	44.4		23.2		15.9		50.8		31.4		13.1
Jurisdictional allowance for funds used during construction	27.5		25.8		1.7		28.7		27.0		1.7
La Cygne leasehold dismantling costs	29.6		29.6		—		29.6		29.6		—
Cost of removal	—		—		—		4.4		—		—
Kansas tax credits	16.7		16.7		—		—		—		—
Purchase power agreement	5.8		5.8		—		6.3		6.3		—

Fuel recovery mechanisms	6.5		—		6.5		1.3		—		—
February 2021 winter weather event	65.1		—		65.1		—		—		—
Sibley AAO	29.3		—		—		18.4		—		—

Other regulatory liabilities	96.5		19.1		37.0		55.8		7.8		14.8
Total	2,775.7		1,482.2		1,008.8		2,664.9		1,472.9		907.4
Less: current portion	(70.7)		(12.8)		(54.6)		(26.1)		(11.9)		(8.0)
Total noncurrent regulatory liabilities	$	2,705.0	$	1,469.4	$	954.2	$	2,638.8	$	1,461.0	$	899.4

The following summarizes the nature and period of recovery for each of the regulatory assets listed in the table above.

Pension and post-retirement costs: Represents unrecognized gains and losses and prior service costs that will be recognized in future net periodic pension and post-retirement costs, pension settlements amortized over various periods and financial and regulatory accounting method differences that will be eliminated over the life of the pension plans. Of these amounts, $494.6 million, $265.6 million and $179.0 million for Evergy, Evergy Kansas Central and Evergy Metro, respectively, are not included in rate base and are amortized over various periods. Additionally, $219.7 million, $(11.6) million and $123.3 million for Evergy, Evergy Kansas Central and Evergy Metro, respectively, represent differences between pension and post-retirement costs under GAAP and pension and post-retirement costs for ratemaking that will be recovered or refunded in future rates and differences in accumulated unrecognized gains and losses and prior service costs between Evergy and Evergy Metro due to Evergy Metro electing not to apply "push-down accounting" related to the Great Plains Energy and Evergy Kansas Central merger.

Debt reacquisition costs: Includes costs incurred to reacquire and refinance debt. These costs are amortized over the term of the new debt or the remaining lives of the old debt issuances if no new debt was issued and are not included in rate base.

Debt fair value adjustment: Represents purchase accounting adjustments recorded to state the carrying value of Evergy Metro and Evergy Missouri West long-term debt at fair value in connection with the Great Plains Energy and Evergy Kansas Central merger. Amount is amortized over the life of the related debt and is not included in rate base.

Asset retirement obligations fair value adjustment: Represents purchase accounting adjustments recorded to state the carrying value of Evergy Metro and Evergy Missouri West AROs at fair value in connection with the Great

Plains Energy and Evergy Kansas Central merger. Amount is amortized over the life of the related plant and is not included in rate base.

Depreciation: Represents the difference between regulatory depreciation expense and depreciation expense recorded for financial reporting purposes. These assets are included in rate base and the difference is amortized over the life of the related plant.

Cost of removal: Represents amounts spent, but not yet collected, to dispose of plant assets. This asset will decrease as removal costs are collected in rates and is included in rate base.

Asset retirement obligations: Represents amounts associated with AROs as discussed further in Note 6. These amounts are recovered over the life of the related plant and are not included in rate base.

Analog meter unrecovered investment: Represents the deferral of unrecovered investment of retired analog meters. Of this amount, $10.1 million is not included in rate base for Evergy and Evergy Kansas Central and is being amortized over a five-year period.

Treasury yield hedges: Represents the effective portion of treasury yield hedge transactions. Amortization of this amount will be included in interest expense over the term of the related debt and is not included in rate base.

Iatan No. 1 and common facilities: Represents depreciation and carrying costs related to Iatan No. 1 and common facilities. These costs are included in rate base and amortized over various periods.

Iatan No. 2 construction accounting costs: Represents the construction accounting costs related to Iatan No. 2. These costs are included in rate base and amortized through 2059.

Kansas property tax surcharge: Represents actual costs incurred for property taxes in excess of amounts collected in revenues. These costs are expected to be recovered over a one-year period and are not included in rate base.

Disallowed plant costs: The KCC originally disallowed certain costs related to the Wolf Creek plant. In 1987, the KCC revised its original conclusion and provided for recovery of an indirect disallowance with no return on investment. This regulatory asset represents the present value of the future expected revenues to be provided to recover these costs, net of the amounts amortized.

La Cygne environmental costs: Represents the deferral of depreciation and amortization expense and associated carrying charges related to the La Cygne Station environmental project. This amount will be amortized over the life of the related asset and is included in rate base.

Deferred customer programs: Represents costs related to various energy efficiency programs that have been accumulated and deferred for future recovery. Of these amounts, $12.3 million for Evergy and $7.8 million for Evergy Metro are not included in rate base and are amortized over various periods.

Fuel recovery mechanisms: Represents the actual cost of fuel consumed in producing electricity and the cost of purchased power in excess of the amounts collected from customers. This difference is expected to be recovered over a one-year period and is not included in rate base.

February 2021 winter weather event: Represents deferred extraordinary fuel and purchased power costs incurred to provide electric service as a result of the February 2021 winter weather event. These amounts are not included in rate base.

Solar rebates: Represents costs associated with solar rebates provided to retail electric customers. These amounts are not included in rate base and are amortized over various periods.

Wolf Creek outage: Represents deferred expenses associated with Wolf Creek's scheduled refueling and maintenance outages. These expenses are amortized during the period between planned outages and are not included in rate base.

Pension and other post-retirement benefit non-service costs: Represents the non-service component of pension and post-retirement net benefit costs that are capitalized as authorized by regulators. The amounts are included in rate base and are recovered over the life of the related asset.

Retired generation facilities: Represents amounts to be recovered for facilities that have been retired and are probable of recovery.

Merger transition costs: Represents recoverable transition costs related to the merger. The amounts are not included in rate base and are recovered from retail customers through 2028.

Other regulatory assets: Includes various regulatory assets that individually are small in relation to the total regulatory asset balance. These amounts have various recovery periods and are not included in rate base.

The following summarizes the nature and period of amortization for each of the regulatory liabilities listed in the table above.

Taxes refundable through future rates: Represents the obligation to return to customers income taxes recovered in earlier periods when corporate income tax rates were higher than current income tax rates. A large portion of this amount is related to depreciation and will be returned to customers over the life of the applicable property.

Deferred regulatory gain from sale leaseback: Represents the gain Evergy Kansas South recorded on the 1987 sale and leaseback of its 50% interest in La Cygne Unit 2. The gain is amortized over the term of the lease.

Emission allowances: Represents deferred gains related to the sale of emission allowances to be returned to customers.

Nuclear decommissioning: Represents the difference between the fair value of the assets held in the nuclear decommissioning trust and the amount recorded for the accumulated accretion and depreciation expense associated with the asset retirement obligation related to Wolf Creek.

Pension and post-retirement costs: Includes pension and post-retirement benefit obligations and expense recognized in setting prices in excess of actual pension and post-retirement expense.

Jurisdictional allowance for funds used during construction: Represents AFUDC that is accrued subsequent to the time the associated construction charges are included in prices and prior to the time the related assets are placed in service. The AFUDC is amortized to depreciation expense over the useful life of the asset that is placed in service.

La Cygne leasehold dismantling costs: Represents amounts collected but not yet spent on the contractual obligation to dismantle a portion of La Cygne Unit 2. The obligation will be discharged as the unit is dismantled.

Cost of removal: Represents amount collected, but not yet spent, to dispose of plant assets. This liability will be discharged as removal costs are incurred.

Kansas tax credits: Represents Kansas tax credits on investment in utility plant. Amounts will be credited to customers subsequent to the realization of the credits over the remaining lives of the utility plant giving rise to the tax credits.

Purchase power agreement: Represents the amount included in retail electric rates from customers in excess of costs incurred under purchase power agreements. Amounts are amortized over a five-year period.

Fuel recovery mechanisms: Represents the amount collected from customers in excess of the actual cost of fuel consumed in producing electricity and the cost of purchased power. This difference is expected to be refunded over a one-year period and is not included in rate base.

February 2021 winter weather event: Represents the deferral of increased wholesale revenues earned during the February 2021 winter weather event.

Sibley AAO: Represents the estimated amount of revenues that Evergy Missouri West has collected from customers for Sibley Station that Evergy has determined is probable of refund. These amounts were recorded in connection with an AAO granted by the MPSC in October 2019 and deferred amounts will be considered by the MPSC in Evergy Missouri West's 2022 rate case.

Other regulatory liabilities: Includes various regulatory liabilities that individually are relatively small in relation to the total regulatory liability balance. These amounts will be credited over various periods.

GOODWILL	12 Months Ended
GOODWILL	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL	GOODWILLGAAP requires goodwill to be tested for impairment annually and when an event occurs indicating the possibility that an impairment exists. Evergy's impairment test for the $2,336.6 million of goodwill that was recorded as a result of the Great Plains Energy and Evergy Kansas Central merger was conducted as of May 1, 2021. The goodwill impairment test consists of comparing the fair value of a reporting unit to its carrying amount, including goodwill, to identify potential impairment. In the event that the carrying amount exceeds the fair value of the reporting unit, an impairment loss is recognized for the difference between the carrying amount of the reporting unit and its fair value. Evergy's consolidated operations are considered one reporting unit for assessment of impairment, as management assesses financial performance and allocates resources on a consolidated basis. The determination of fair value of the reporting unit consisted of two valuation techniques: an income approach consisting of a discounted cash flow analysis and a market approach consisting of a determination of reporting unit invested capital using a market multiple derived from the historical earnings before interest, income taxes, depreciation and amortization and market prices of the stock of peer companies. The results of the two techniques were evaluated and weighted to determine a point within the range that management considered representative of fair value for the reporting unit. The fair value of the reporting unit exceeded the carrying amount, including goodwill. As a result, there was no impairment of goodwill.

ASSET RETIREMENT OBLIGATIONS

12 Months Ended

Dec. 31, 2021

Asset Retirement Obligation Disclosure [Abstract]

ASSET RETIREMENT OBLIGATIONS

AROs associated with tangible long-lived assets are legal obligations that exist under enacted laws, statutes and written or oral contracts, including obligations arising under the doctrine of promissory estoppel. These liabilities are recognized at estimated fair value as incurred with a corresponding amount capitalized as part of the cost of the related long-lived assets and depreciated over their useful lives. Accretion of the liabilities due to the passage of time is recorded to a regulatory asset and/or liability. Changes in the estimated fair values of the liabilities are recognized when known.

Evergy Kansas Central, Evergy Metro and Evergy Missouri West have AROs related to asbestos abatement and the closure and post-closure care of ponds and landfills containing coal combustion residuals (CCRs). In addition, Evergy Kansas Central and Evergy Metro have AROs related to decommissioning Wolf Creek and the retirement of wind generation facilities.

The MPSC and KCC require the owners of Wolf Creek, including Evergy Kansas South and Evergy Metro with their respective 47% ownership shares, to submit an updated decommissioning cost study every three years. The most recent study was submitted to the MPSC and KCC in September 2020. As a result of changes in estimates related to the study, Evergy, Evergy Kansas Central and Evergy Metro recorded increases to their AROs to decommission Wolf Creek of $259.1 million, $140.7 million and $118.4 million, respectively, in 2020.

The following table summarizes the change in the Evergy Companies' AROs for the periods ending December 31, 2021 and 2020.


	Evergy				Evergy Kansas Central				Evergy Metro
	2021		2020		2021		2020		2021		2020
	(millions)
Beginning balance January 1	$	941.9	$	674.1	$	427.2	$	272.9	$	378.9	$	253.6

Revision in timing and/or estimates	13.5		249.3		3.8		136.8		9.5		118.4
Settlements	(38.7)		(18.4)		(10.6)		(2.2)		(24.4)		(7.5)
Accretion	43.4		36.9		23.5		19.7		17.0		14.4
Ending balance	$	960.1	$	941.9	$	443.9	$	427.2	$	381.0	$	378.9
Less: current portion	(19.5)		(40.2)		(7.3)		(11.2)		(11.0)		(21.2)
Total noncurrent asset retirement obligation	$	940.6	$	901.7	$	436.6	$	416.0	$	370.0	$	357.7

PROPERTY, PLANT AND EQUIPMENT

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

PROPERTY, PLANT AND EQUIPMENT

The following tables summarize the property, plant and equipment of Evergy, Evergy Kansas Central and Evergy Metro.


December 31, 2021	Evergy			Evergy Kansas Central			Evergy Metro
		(millions)
Electric plant in service		$	30,289.9		$	14,686.3		$	11,656.9
Electric plant acquisition adjustment		724.3			724.3			—
Accumulated depreciation		(11,515.5)			(5,590.8)			(4,733.7)
Plant in service		19,498.7			9,819.8			6,923.2
Construction work in progress		1,350.6			652.2			475.3
Nuclear fuel, net		152.5			76.1			76.4
Plant to be retired, net (a)		0.8			0.8			—
Net property, plant and equipment		$	21,002.6		$	10,548.9		$	7,474.9

December 31, 2020	Evergy			Evergy Kansas Central			Evergy Metro
		(millions)
Electric plant in service		$	28,914.8		$	14,095.1		$	11,161.8
Electric plant acquisition adjustment		724.3			724.3			—
Accumulated depreciation		(10,998.4)			(5,293.5)			(4,532.7)
Plant in service		18,640.7			9,525.9			6,629.1
Construction work in progress		1,153.5			589.1			433.9
Nuclear fuel, net		155.9			77.7			78.2
Plant to be retired, net (a)		0.9			0.9			—
Net property, plant and equipment		$	19,951.0		$	10,193.6		$	7,141.2

(a) As of December 31, 2021 and 2020, represents the planned retirement of Evergy Kansas Central analog meters prior to the end of their remaining useful lives.

The following table summarizes the property, plant and equipment of VIEs for Evergy and Evergy Kansas Central.


		December 31
	2021			2020
		(millions)
Electric plant of VIEs		$	392.1		$	392.1
Accumulated depreciation of VIEs		(244.3)			(237.2)
Net property, plant and equipment of VIEs		$	147.8		$	154.9

Depreciation Expense

The Evergy Companies' depreciation expense is detailed in the following table.


	2021		2020		2019
	(millions)
Evergy (a)	$	813.6	$	804.7	$	786.3
Evergy Kansas Central (a)	450.3		435.1		425.8
Evergy Metro	255.9		269.5		262.7

(a) Approximately $7.1 million of depreciation expense in each of 2021, 2020 and 2019 was attributable to property, plant and equipment of VIEs.

JOINTLY-OWNED ELECTRIC UTILITY PLANTS

12 Months Ended

Dec. 31, 2021

Jointly Owned Electric Utility Plants [Abstract]

JOINTLY-OWNED ELECTRIC UTILITY PLANTS

Evergy's, Evergy Kansas Central's and Evergy Metro's share of jointly-owned electric utility plants at December 31, 2021, are detailed in the following tables.


Evergy
	Wolf Creek Unit			La Cygne Units (a)			Iatan No. 1 Unit			Iatan No. 2 Unit			Iatan Common			Jeffrey Energy Center			State Line
	(millions, except MW amounts)
Evergy's share		94%			100%			88%			73%			79%			100%			40%

Electric plant in service		$	4,078.7		$	2,219.1		$	765.7		$	1,405.9		$	503.6		$	2,521.1		$	115.0
Accumulated depreciation		2,040.2			816.0			251.9			480.3			122.2			1,036.7			85.2
Nuclear fuel, net		152.5			—			—			—			—			—			—
Construction work in progress		187.4			52.6			4.4			8.1			7.4			48.7			25.5
2022 accredited capacity-MWs		1,108			1,426			618			640			n/a			2,191			200

(a) The VIE consolidated by Evergy and Evergy Kansas Central holds its 50% leasehold interest in La Cygne Unit 2. This 50% leasehold interest in La Cygne Unit 2 is reflected in the information provided above. See Note 18 for additional information.


Evergy Kansas Central
	Wolf Creek Unit			La Cygne Units (a)			Jeffrey Energy Center		State Line
	(millions, except MW amounts)
Evergy Kansas Central's share		47%			50%		92%			40%

Electric plant in service		$	2,019.8		$	1,047.4	$	2,307.6		$	115.0
Accumulated depreciation		992.2			475.2		944.5			85.2
Nuclear fuel, net		76.1			—		—			—
Construction work in progress		83.6			29.0		44.9			25.5
2022 accredited capacity-MWs		554			713		2,016			200


Evergy Metro
	Wolf Creek Unit			La Cygne Units			Iatan No. 1 Unit			Iatan No. 2 Unit			Iatan Common
	(millions, except MW amounts)
Evergy Metro's share		47%			50%			70%			55%			61%

Electric plant in service		$	2,058.9		$	1,171.7		$	594.8		$	1,066.4		$	399.6
Accumulated depreciation		1,048.0			340.8			205.3			412.5			103.3
Nuclear fuel, net		76.4			—			—			—			—
Construction work in progress		103.8			23.6			3.6			6.1			5.5
2022 accredited capacity-MWs		554			713			492			482			NA

Each owner must fund its own portion of the plant's operating expenses and capital expenditures. The Evergy Companies' share of direct expenses are included in the appropriate operating expense classifications in Evergy's, Evergy Kansas Central's and Evergy Metro's consolidated financial statements.

PENSION PLANS AND POST-RETIREMENT BENEFITS

12 Months Ended

Dec. 31, 2021

Retirement Benefits [Abstract]

PENSION PLANS AND POST-RETIREMENT BENEFITS

Evergy and certain of its subsidiaries maintain, and Evergy Kansas Central and Evergy Metro participate in, qualified non-contributory defined benefit pension plans covering the majority of Evergy Kansas Central's and Evergy Metro's employees as well as certain non-qualified plans covering certain active and retired officers. Evergy is also responsible for its indirect 94% ownership share of Wolf Creek's defined benefit plans, consisting of Evergy Kansas South's and Evergy Metro's respective 47% ownership shares.

For the majority of employees, pension benefits under these plans reflect the employees' compensation, years of service and age at retirement. However, for the plan covering Evergy Kansas Central's employees, the benefits for non-union employees hired between 2002 and the second quarter of 2018 and union employees hired beginning in 2012 are derived from a cash balance account formula. The plan was closed to future non-union employees in 2018. For the plans covering Evergy Metro's employees, the benefits for union employees hired beginning in 2014 are derived from a cash balance account formula and the plans were closed to future non-union employees in 2014.

Evergy and its subsidiaries also provide certain post-retirement health care and life insurance benefits for substantially all retired employees of Evergy Kansas Central and Evergy Metro and their respective shares of Wolf Creek's post-retirement benefit plans.

The Evergy Companies record pension and post-retirement expense in accordance with rate orders from the KCC and MPSC that allow the difference between pension and post-retirement costs under GAAP and costs for ratemaking to be recognized as a regulatory asset or liability. This difference between financial and regulatory accounting methods is due to timing and will be eliminated over the life of the plans.

For 2021, Evergy, Evergy Kansas Central and Evergy Metro recorded pension settlement charges of $34.3 million, $25.6 million and $13.7 million, respectively. For 2020, Evergy and Evergy Metro recorded pension settlement charges of $11.2 million and $14.3 million, respectively. For 2019, Evergy and Evergy Metro recorded pension settlement charges of $15.6 million and $23.0 million, respectively. These settlement charges were the result of accelerated pension distributions as a result of employee retirements and annuity purchases for certain plan participants in 2021. Evergy, Evergy Kansas Central and Evergy Metro deferred substantially all of the charges to a regulatory asset and expect to recover these amounts over future periods pursuant to regulatory agreements.

The following pension benefits tables provide information relating to the funded status of all defined benefit pension plans on an aggregate basis as well as the components of net periodic benefit costs. For financial reporting purposes, the market value of plan assets is the fair value. Net periodic benefit costs reflect total plan benefit costs prior to the effects of capitalization and sharing with joint owners of power plants.


	Pension Benefits						Post-Retirement Benefits
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Change in projected benefit obligation (PBO)	(millions)
PBO at January 1, 2021	$	2,901.1	$	1,429.6	$	1,446.5	$	280.4	$	146.8	$	133.6
Service cost	82.6		29.1		53.5		3.3		1.7		1.6
Interest cost	84.2		41.0		42.5		7.8		4.0		3.8
Contribution by participants	—		—		—		9.0		1.4		7.6

Actuarial gain	(119.0)		(50.0)		(68.3)		(17.2)		(9.4)		(7.8)
Benefits paid	(93.5)		(54.8)		(37.5)		(24.9)		(10.6)		(14.3)
Settlements	(284.0)		(126.2)		(157.8)		—		—		—
Other	(9.7)		(4.3)		(5.4)		—		—		—
PBO at December 31, 2021	$	2,561.7	$	1,264.4	$	1,273.5	$	258.4	$	133.9	$	124.5
Change in plan assets
Fair value of plan assets at January 1, 2021	$	1,799.1	$	887.0	$	912.1	$	248.3	$	125.8	$	122.5
Actual return on plan assets	145.5		83.4		62.1		5.2		6.5		(1.3)
Contributions by employer and participants	148.7		46.5		102.2		11.8		1.7		10.1
Benefits paid	(89.4)		(52.3)		(37.1)		(23.0)		(10.0)		(13.0)
Settlements	(279.5)		(124.6)		(154.9)		—		—		—
Other	(9.7)		(4.3)		(5.4)		—		—		—
Fair value of plan assets at December 31, 2021	$	1,714.7	$	835.7	$	879.0	$	242.3	$	124.0	$	118.3
Funded status at December 31, 2021	$	(847.0)	$	(428.7)	$	(394.5)	$	(16.1)	$	(9.9)	$	(6.2)


	Pension Benefits						Post-Retirement Benefits
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Amounts recognized in the consolidated balance sheets					(millions)
Non-current asset	$	—	$	—	$	—	$	21.5	$	—	$	21.5
Current pension and other post-retirement liability	(4.4)		(2.4)		(0.7)		(1.1)		(0.6)		(0.6)
Noncurrent pension liability and other post-retirement liability	(842.6)		(426.3)		(393.8)		(36.5)		(9.3)		(27.1)
Net amount recognized before regulatory treatment	(847.0)		(428.7)		(394.5)		(16.1)		(9.9)		(6.2)
Accumulated OCI or regulatory asset/liability	317.2		263.6		84.6		(11.4)		(9.6)		(10.5)
Net amount recognized at December 31, 2021	$	(529.8)	$	(165.1)	$	(309.9)	$	(27.5)	$	(19.5)	$	(16.7)
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Actuarial (gain) loss	$	302.4	$	246.6	$	86.4	$	(12.6)	$	(10.5)	$	(3.8)
Prior service cost	14.8		17.0		(1.8)		1.2		0.9		(6.7)
Net amount recognized at December 31, 2021	$	317.2	$	263.6	$	84.6	$	(11.4)	$	(9.6)	$	(10.5)


	Pension Benefits						Post-Retirement Benefits
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Change in projected benefit obligation (PBO)	(millions)
PBO at January 1, 2020	$	2,718.2	$	1,323.4	$	1,371.4	$	264.3	$	138.7	$	125.6
Service cost	78.9		27.1		51.8		2.7		1.1		1.6
Interest cost	96.8		47.0		49.1		9.2		4.8		4.4
Contribution by participants	—		—		—		9.3		1.8		7.5
Plan amendments	4.2		8.1		(3.9)		1.0		0.5		0.5
Actuarial loss	273.9		127.0		144.8		19.6		11.0		8.6
Benefits paid	(202.5)		(102.3)		(99.0)		(25.7)		(11.1)		(14.6)
Settlements	(62.9)		—		(62.9)		—		—		—
Other	(5.5)		(0.7)		(4.8)		—		—		—
PBO at December 31, 2020	$	2,901.1	$	1,429.6	$	1,446.5	$	280.4	$	146.8	$	133.6
Change in plan assets
Fair value of plan assets at January 1, 2020	$	1,732.8	$	842.1	$	890.7	$	239.9	$	120.5	$	119.4
Actual return on plan assets	209.9		99.7		110.2		20.7		13.7		7.0
Contributions by employer and participants	123.4		45.8		77.6		11.7		2.1		9.6
Benefits paid	(198.6)		(99.9)		(98.7)		(24.0)		(10.5)		(13.5)
Settlements	(62.9)		—		(62.9)		—		—		—
Other	(5.5)		(0.7)		(4.8)		—		—		—
Fair value of plan assets at December 31, 2020	$	1,799.1	$	887.0	$	912.1	$	248.3	$	125.8	$	122.5
Funded status at December 31, 2020	$	(1,102.0)	$	(542.6)	$	(534.4)	$	(32.1)	$	(21.0)	$	(11.1)


	Pension Benefits						Post-Retirement Benefits
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Amounts recognized in the consolidated balance sheets					(millions)
Non-current asset	$	—	$	—	$	—	$	21.3	$	—	$	21.3
Current pension and other post-retirement liability	(4.4)		(2.5)		(0.8)		(1.6)		(0.8)		(0.9)
Noncurrent pension liability and other post- retirement liability	(1,097.6)		(540.1)		(533.6)		(51.8)		(20.2)		(31.5)
Net amount recognized before regulatory treatment	(1,102.0)		(542.6)		(534.4)		(32.1)		(21.0)		(11.1)
Accumulated OCI or regulatory asset/liability	566.9		408.0		216.9		4.0		1.0		(7.7)
Net amount recognized at December 31, 2020	$	(535.1)	$	(134.6)	$	(317.5)	$	(28.1)	$	(20.0)	$	(18.8)
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Actuarial (gain) loss	$	551.8	$	388.9	$	218.6	$	2.2	$	(0.3)	$	—
Prior service cost	15.1		19.1		(1.7)		1.8		1.3		(7.7)
Net amount recognized at December 31, 2020	$	566.9	$	408.0	$	216.9	$	4.0	$	1.0	$	(7.7)

Actuarial gains for the Evergy Companies' pension benefit plans for 2021 were primarily driven by an increase in the discount rate used to measure the benefit obligation as a result of higher market interest rates. See the weighted average assumptions used to determine the benefit obligations in this Note 9 for further information. Actuarial losses for the Evergy Companies' pension benefit plans for 2020 were primarily driven by a decrease in the discount rate used to measure the benefit obligation of approximately 70 basis points as a result of lower market interest rates.

As of December 31, 2021 and 2020, Evergy's pension benefits include non-qualified benefit obligations of $49.2 million and $52.1 million, respectively, which are funded by trusts containing assets of $44.2 million and $46.3 million, respectively. As of December 31, 2021 and 2020, Evergy Kansas Central's pension benefits include non-qualified benefit obligations of $25.4 million and $27.0 million, respectively, which are funded by trusts containing assets of $31.7 million and $32.7 million, respectively. The assets in the aforementioned trusts are not included in the table above. See Note 13 for more information on these amounts.


	Pension Benefits						Post-Retirement Benefits
Year Ended December 31, 2021	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Components of net periodic benefit costs	(millions)
Service cost	$	82.6	$	29.1	$	53.5	$	3.3	$	1.7	$	1.6
Interest cost	84.2		41.0		42.5		7.8		4.0		3.8
Expected return on plan assets	(103.5)		(52.8)		(55.7)		(8.9)		(6.3)		(2.6)
Prior service cost	2.0		2.1		—		0.5		0.5		(1.0)
Recognized net actuarial (gain) loss	54.1		36.0		43.8		1.4		0.6		(0.1)
Settlement and special termination benefits	34.3		25.6		13.7		—		—		—
Net periodic benefit costs before regulatory adjustment and intercompany allocations	153.7		81.0		97.8		4.1		0.5		1.7
Regulatory adjustment	17.3		(13.1)		4.2		(4.8)		(3.3)		0.4
Intercompany allocations	n/a		3.2		(25.9)		n/a		—		(0.4)
Net periodic benefit costs (income)	171.0		71.1		76.1		(0.7)		(2.8)		1.7
Other changes in plan assets and benefit obligations recognized in OCI or regulatory assets/liabilities
Current year net gain	(195.3)		(106.3)		(88.4)		(13.6)		(9.6)		(3.9)
Amortization of gain (loss)	(52.4)		(36.0)		(43.9)		(1.3)		(0.5)		0.1

Amortization of prior service cost	(2.0)		(2.1)		—		(0.5)		(0.5)		1.0

Total recognized in OCI or regulatory asset/liability	(249.7)		(144.4)		(132.3)		(15.4)		(10.6)		(2.8)
Total recognized in net periodic benefit costs and OCI or regulatory asset/liability	$	(78.7)	$	(73.3)	$	(56.2)	$	(16.1)	$	(13.4)	$	(1.1)


	Pension Benefits						Post-Retirement Benefits
Year Ended December 31, 2020	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Components of net periodic benefit costs	(millions)
Service cost	$	78.9	$	27.1	$	51.8	$	2.7	$	1.1	$	1.6
Interest cost	96.8		47.0		49.1		9.2		4.8		4.4
Expected return on plan assets	(105.6)		(53.1)		(54.7)		(9.3)		(6.6)		(2.7)
Prior service cost	1.8		1.6		0.8		0.5		0.5		—
Recognized net actuarial loss	46.4		33.9		45.7		0.2		—		(0.6)
Settlement and special termination benefits	11.2		—		14.3		—		—		—
Net periodic benefit costs before regulatory adjustment and intercompany allocations	129.5		56.5		107.0		3.3		(0.2)		2.7
Regulatory adjustment	29.6		5.9		(11.6)		(4.0)		(3.0)		(0.2)
Intercompany allocations	n/a		(0.2)		(22.6)		n/a		0.1		(0.3)
Net periodic benefit costs (income)	159.1		62.2		72.8		(0.7)		(3.1)		2.2
Other changes in plan assets and benefit obligations recognized in OCI or regulatory assets/liabilities
Current year net loss	169.7		80.4		89.3		8.2		3.9		4.3
Amortization of gain (loss)	(59.2)		(33.8)		(60.0)		(0.2)		—		0.6
Prior service cost	4.1		8.1		(3.9)		0.9		0.5		0.4
Amortization of prior service cost	(1.8)		(1.6)		(0.8)		(0.5)		(0.5)		—
Total recognized in OCI or regulatory asset/liability	112.8		53.1		24.6		8.4		3.9		5.3
Total recognized in net periodic benefit costs and OCI or regulatory asset/liability	$	271.9	$	115.3	$	97.4	$	7.7	$	0.8	$	7.5


	Pension Benefits						Post-Retirement Benefits
Year Ended December 31, 2019	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Components of net periodic benefit costs	(millions)
Service cost	$	79.1	$	29.0	$	50.1	$	2.5	$	1.1	$	1.4
Interest cost	108.0		53.7		53.3		10.5		5.6		4.9
Expected return on plan assets	(106.3)		(54.8)		(48.9)		(10.0)		(6.7)		(3.3)
Prior service cost	1.9		1.7		0.9		0.5		0.5		—
Recognized net actuarial (gain) loss	33.0		25.5		49.8		(1.2)		(0.6)		(1.4)
Settlement and special termination benefits	15.6		—		23.0		—		—		—
Net periodic benefit costs before regulatory adjustment and intercompany allocations	131.3		55.1		128.2		2.3		(0.1)		1.6
Regulatory adjustment	37.4		3.0		(19.2)		(3.4)		(3.0)		0.4
Intercompany allocations	n/a		—		(34.4)		n/a		—		(0.4)
Net periodic benefit costs (income)	168.7		58.1		74.6		(1.1)		(3.1)		1.6
Other changes in plan assets and benefit obligations recognized in OCI or regulatory assets/liabilities
Current year net (gain) loss	84.7		44.6		35.9		0.9		(3.8)		4.7
Amortization of gain (loss)	(48.6)		(25.5)		(72.8)		1.2		0.6		1.4
Amortization of prior service cost	(1.9)		(1.7)		(0.9)		(0.5)		(0.5)		—
Total recognized in OCI or regulatory asset/liability	34.2		17.4		(37.8)		1.6		(3.7)		6.1
Total recognized in net periodic benefit costs and OCI or regulatory asset/liability	$	202.9	$	75.5	$	36.8	$	0.5	$	(6.8)	$	7.7

For financial reporting purposes, the estimated prior service cost and net actuarial (gain) loss for the defined benefit plans are amortized from accumulated other comprehensive income (OCI) or a regulatory asset into net periodic benefit cost. The Evergy Companies amortize prior service cost on a straight-line basis over the average future service of the active employees (plan participants) benefiting under the plan. Evergy and Evergy Kansas Central amortize the net actuarial (gain) loss on a straight-line basis over the average future service of active plan participants benefiting under the plan without application of an amortization corridor. Evergy Metro amortizes the net actuarial (gain) loss on a rolling five-year average basis.

Pension and other post-retirement benefit plans with the PBO, accumulated benefit obligation (ABO) or accumulated other post-retirement benefit obligation (APBO) in excess of the fair value of plan assets at year-end are detailed in the following tables.


December 31, 2021	Evergy		Evergy Kansas Central		Evergy Metro
	(millions)
ABO for all defined benefit pension plans	$	2,229.1	$	1,124.2	$	1,081.1
Pension plans with the PBO in excess of plan assets
Projected benefit obligation	$	2,561.7	$	1,264.4	$	1,273.5
Fair value of plan assets	1,714.7		835.7		879.0
Pension plans with the ABO in excess of plan assets
Accumulated benefit obligation	$	2,229.1	$	1,124.2	$	1,081.1
Fair value of plan assets	1,714.7		835.7		879.0
Other post-retirement benefit plans with the APBO in excess of plan assets
Accumulated other post-retirement benefit obligation	$	258.4	$	133.9	$	124.5
Fair value of plan assets	242.3		124.0		118.3


December 31, 2020	Evergy		Evergy Kansas Central		Evergy Metro
	(millions)
ABO for all defined benefit pension plans	$	2,534.1	$	1,281.6	$	1,227.4
Pension plans with the PBO in excess of plan assets
Projected benefit obligation	$	2,901.1	$	1,429.6	$	1,446.5
Fair value of plan assets	1,799.1		887.0		912.1
Pension plans with the ABO in excess of plan assets
Accumulated benefit obligation	$	2,534.1	$	1,281.6	$	1,227.4
Fair value of plan assets	1,799.1		887.0		912.1
Other post-retirement benefit plans with the APBO in excess of plan assets
Accumulated other post-retirement benefit obligation	$	280.4	$	146.8	$	133.6
Fair value of plan assets	248.3		125.8		122.5

The expected long-term rate of return on plan assets represents the Evergy Companies' estimate of the long-term return on plan assets and is based on historical and projected rates of return for current and planned asset classes in the plans' investment portfolios. Assumed projected rates of return for each asset class were selected after analyzing historical experience and future expectations of the returns of various asset classes. Based on the target asset allocation for each asset class, the overall expected rate of return for the portfolios was developed and adjusted for the effect of projected benefits paid from plan assets and future plan contributions.

The following tables provide the weighted-average assumptions used to determine benefit obligations and net costs for the Evergy Companies' pension and post-retirement benefit plans.


Weighted-average assumptions used to determine the benefit obligation at December 31, 2021	Pension Benefits						Post-Retirement Benefits
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Discount rate	3.10	%	3.10	%	3.11	%	3.12	%	3.11	%	3.13	%
Rate of compensation increase	3.75	%	3.77	%	3.71	%	3.75	%	n/a		3.75	%
Interest crediting rate for cash balance plans	4.13	%	4.00	%	4.45	%	n/a		n/a		n/a

Weighted-average assumptions used to determine the benefit obligation at December 31, 2020	Pension Benefits						Post-Retirement Benefits
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Discount rate	2.95	%	2.93	%	2.97	%	2.84	%	2.80	%	2.88	%
Rate of compensation increase	3.71	%	3.76	%	3.71	%	3.75	%	n/a		3.75	%
Interest crediting rate for cash balance plans	4.12	%	4.00	%	4.46	%	n/a		n/a		n/a


Weighted-average assumptions used to determine net costs for the year ended December 31, 2021	Pension Benefits						Post-Retirement Benefits
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Discount rate	2.95	%	2.93	%	2.97	%	2.84	%	2.80	%	2.88	%
Expected long-term return on plan assets	6.63	%	6.70	%	6.57	%	3.93	%	5.55	%	2.27	%
Rate of compensation increase	3.71	%	3.78	%	3.71	%	3.75	%	n/a		3.75	%
Interest crediting rate for cash balance plans	4.12	%	4.00	%	4.46	%	n/a		n/a		n/a

Weighted-average assumptions used to determine net costs for the year ended December 31, 2020	Pension Benefits						Post-Retirement Benefits
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Discount rate	3.62	%	3.61	%	3.64	%	3.56	%	3.54	%	3.58	%
Expected long-term return on plan assets	6.63	%	6.70	%	6.56	%	4.19	%	6.00	%	2.37	%
Rate of compensation increase	3.74	%	3.75	%	3.71	%	3.75	%	n/a		3.75	%
Interest crediting rate for cash balance plans	4.32	%	4.21	%	4.50	%	n/a		n/a		n/a

Evergy expects to contribute $92.9 million to the pension plans in 2022 to meet Employee Retirement Income Security Act of 1974, as amended (ERISA) funding requirements and regulatory orders, of which $30.6 million is expected to be paid by Evergy Kansas Central and $62.3 million is expected to be paid by Evergy Metro. The Evergy Companies' funding policy is to contribute amounts sufficient to meet the ERISA funding requirements and MPSC and KCC rate orders plus additional amounts as considered appropriate; therefore, actual contributions may differ from expected contributions. Also in 2022, Evergy expects to contribute $2.2 million to the post-retirement benefit plans, of which $0.5 million is expected to be paid by Evergy Kansas Central and $1.7 million is expected to be paid by Evergy Metro.

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid through 2031.


	Pension Benefits						Post-Retirement Benefits
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
	(millions)
2022	$	159.5	$	80.8	$	77.5	$	16.1	$	9.2	$	6.9
2023	160.4		79.6		79.5		15.6		9.0		6.7
2024	163.8		80.6		81.7		15.1		8.5		6.6
2025	168.1		81.3		85.3		14.7		8.2		6.5
2026	173.5		83.2		88.8		14.3		8.0		6.4
2027-2031	862.9		399.5		455.7		68.5		37.2		31.2

As of December 31, 2021, Evergy Kansas Central and Evergy Metro maintained a master trust for their non-union and Evergy Kansas Central's union pension benefits and a separate trust for Evergy Metro's union pension benefits. Evergy Kansas Central and Evergy Metro maintained separate trusts for their post-retirement benefits as of December 31,2021. These plans are managed in accordance with prudent investor guidelines contained in the ERISA requirements.

The primary objective of Evergy Kansas Central's and Evergy Metro's pension plans is to provide a source of retirement income for its participants and beneficiaries, and the primary financial objectives of the plans are to minimize funding deficiencies and maintain the plans' ability to pay all benefit and expense obligations when due.

The primary objective of Evergy Kansas Central's and Evergy Metro's post-retirement benefit plans is to preserve capital, maintain sufficient liquidity and earn a consistent rate of return.

The investment strategies of both the Evergy Kansas Central and Evergy Metro pension and post-retirement plans support the above objectives of the plans. The portfolios are invested, and periodically rebalanced, to achieve the targeted allocations detailed below. The following table provides the target asset allocations by asset class for the Evergy Kansas Central and Evergy Metro pension and other post-retirement plan assets.


	Pension Benefits		Post-Retirement Benefits
	Evergy Kansas Central	Evergy Metro	Evergy Kansas Central	Evergy Metro
Domestic equities	26%	26%	26%	15%
International equities	20%	19%	18%	8%
Bonds	39%	37%	51%	68%
Mortgage & asset backed securities	—%	—%	—%	6%
Real estate investments	4%	7%	—%	—%
Other investments	11%	11%	5%	3%

Fair Value Measurements

Evergy classifies recurring and non-recurring fair value measurements based on the fair value hierarchy as discussed in Note 13. The following are descriptions of the valuation methods of the primary fair value measurements disclosed below.

Domestic equities - consist of individually held domestic equity securities and domestic equity mutual funds. Securities and funds, which are publicly quoted, are valued based on quoted prices in active markets and are categorized as Level 1. Funds that are valued by fund administrators using the net asset value (NAV) per fund share, derived from the quoted prices in active markets of the underlying securities are not classified within the fair value hierarchy.

International equities - consist of individually held international equity securities and international equity mutual funds. Securities and funds, which are publicly quoted, are valued based on quoted prices in active markets and are categorized as Level 1. Funds that are valued by fund administrators using the NAV per fund share, derived from the quoted prices in active markets of the underlying securities are not classified within the fair value hierarchy.

Bond funds - consist of funds maintained by investment companies that invest in various types of fixed income securities consistent with the funds' stated objectives. Securities and funds, which are publicly quoted, are valued based on quoted prices in active markets and are categorized as Level 1. Funds that are valued by fund administrators using the NAV per fund share, derived from the quoted prices in active markets of the underlying securities, are not classified within the fair value hierarchy.

Corporate bonds - consists of individually held, primarily domestic, corporate bonds that are traded in less than active markets or priced with models using highly observable inputs that are categorized as Level 2.

U.S. Treasury and agency bonds - consists of individually held U.S. Treasury securities and U.S. agency bonds. U.S. Treasury securities, which are publicly quoted, are valued based on quoted prices in active markets and are categorized as a Level 1. U.S. agency bonds, which are publicly quoted, are traded in less than active markets or priced with models using highly observable inputs and are categorized as Level 2.

Mortgage and asset backed securities - consists of individually held securities that are traded in less than active markets or valued with models using highly observable inputs that are categorized as Level 2.

Real estate investments - consists of traded real estate investment trusts valued at the closing price reported on the major market on which the trusts are traded and are categorized as Level 1 and institutional trust funds valued at NAV per fund share and are not categorized in the fair value hierarchy.

Combination debt/equity/other fund - consists of a fund that invests in various types of debt, equity and other asset classes consistent with the fund's stated objectives. The fund, which is publicly quoted, is valued based on quoted prices in active markets and is categorized as Level 1.

Alternative investments - consists of investments in institutional trust and hedge funds that are valued by fund administrators using the NAV per fund share, derived from the underlying investments of the fund, and are not classified within the fair value hierarchy.

Short-term investments - consists of fund investments in high-quality, short-term, U.S. dollar-denominated instruments with an average maturity of 60 days that are valued at NAV per fund share and are not categorized in the fair value hierarchy.

Cash and cash equivalents - consists of investments with original maturities of three months or less when purchased that are traded in active markets and are categorized as Level 1.

The fair values of the Evergy Companies' pension plan assets at December 31, 2021 and 2020, by asset category are in the following tables.


				Fair Value Measurements Using
Description	December 31 2021			Level 1			Level 2			Level 3			Assets measured at NAV
		(millions)
Evergy Kansas Central Pension Plans
Domestic equities		$	209.9		$	177.3		$	—		$	—		$	32.6
International equities		167.4			167.4			—			—			—
Bond funds		330.4			330.4			—			—			—



Real estate investments		28.1			—			—			—			28.1
Combination debt/equity/other fund		42.7			42.7			—			—			—
Alternative investment funds		44.1			—			—			—			44.1
Short-term investments		13.1			—			—			—			13.1


Total		$	835.7		$	717.8		$	—		$	—		$	117.9

Evergy Metro Pension Plans
Domestic equities		$	203.0		$	179.5		$	—		$	—		$	23.5
International equities		193.1			193.1			—			—			—
Bond funds		260.6			260.6			—			—			—
Corporate bonds		27.1			—			27.1			—			—
U.S. Treasury and agency bonds		14.5			4.7			9.8			—			—
Mortgage and asset backed securities		4.3			—			4.3			—			—
Real estate investments		55.9			—			—			—			55.9
Combination debt/equity/other fund		46.2			46.2			—			—			—
Alternative investment funds		47.5			—			—			—			47.5
Cash and cash equivalents		14.1			14.1			—			—			—
Short-term investments		9.5			—			—			—			9.5
Other		3.2			—			3.2			—			—
Total		$	879.0		$	698.2		$	44.4		$	—		$	136.4


				Fair Value Measurements Using
Description	December 31 2020			Level 1			Level 2			Level 3			Assets measured at NAV
		(millions)
Evergy Kansas Central Pension Plans
Domestic equities		$	248.5		$	151.3		$	—		$	—		$	97.2
International equities		171.2			103.8			—			—			67.4
Bond funds		281.2			230.7			—			—			50.5
Real estate investments		46.7			—			—			—			46.7
Combination debt/equity/other fund		30.4			30.4			—			—			—
Alternative investment funds		83.6			—			—			—			83.6
Short-term investments		25.4			—			—			—			25.4

Total		$	887.0		$	516.2		$	—		$	—		$	370.8

Evergy Metro Pension Plans
Domestic equities		$	247.4		$	191.9		$	—		$	—		$	55.5
International equities		220.8			153.4			—			—			67.4
Bond funds		78.1			21.1			—			—			57.0
Corporate bonds		133.6			—			133.6			—			—
U.S. Treasury and agency bonds		73.8			61.5			12.3			—			—
Mortgage and asset backed securities		5.0			—			5.0			—			—
Real estate investments		40.2			1.6			—			—			38.6
Combination debt/equity/other fund		15.6			15.6			—			—			—
Alternative investment funds		39.7			—			—			—			39.7
Cash and cash equivalents		57.3			57.3			—			—			—
Short-term investments		1.4			—			—			—			1.4
Other		(0.8)			—			(0.8)			—			—
Total		$	912.1		$	502.4		$	150.1		$	—		$	259.6

The fair values of the Evergy Companies' post-retirement plan assets at December 31, 2021 and 2020, by asset category are in the following tables.


				Fair Value Measurements Using
Description	December 31 2021			Level 1			Level 2			Level 3			Assets measured at NAV
		(millions)
Evergy Kansas Central Post-Retirement Benefit Plans
Domestic equities		$	32.5		$	32.5		$	—		$	—		$	—
International equities		22.1			22.1			—			—			—
Bond funds		62.3			62.3			—			—			—







Combination debt/equity/other fund		6.1			6.1			—			—			—
Short-term investments		1.0			—			—			—			1.0

Total		$	124.0		$	123.0		$	—		$	—		$	1.0

Evergy Metro Post-Retirement Benefit Plans
Domestic equities		$	20.0		$	20.0		$	—		$	—		$	—
International equities		12.3			12.3			—			—			—
Bond funds		50.2			50.2			—			—			—
Corporate bonds		18.1			—			18.1			—			—
U.S. Treasury and agency bonds		12.1			6.1			6.0			—			—
Mortgage and asset backed securities		0.8			—			0.8			—			—



Combination debt/equity/other fund		3.9			3.9			—			—			—
Cash and cash equivalents		0.5			0.5			—			—			—
Short-term investments		0.1			—			—			—			0.1
Other		0.3			—			0.3			—			—
Total		$	118.3		$	93.0		$	25.2		$	—		$	0.1


				Fair Value Measurements Using
Description	December 31 2020			Level 1			Level 2			Level 3			Assets measured at NAV
		(millions)
Evergy Kansas Central Post-Retirement Benefit Plans
Domestic equities		$	41.9		$	—		$	—		$	—		$	41.9
International equities		27.7			—			—			—			27.7
Bond funds		55.5			—			—			—			55.5
Cash and cash equivalents		0.7			0.7			—			—			—
Total		$	125.8		$	0.7		$	—		$	—		$	125.1

Evergy Metro Post-Retirement Benefit Plans
Domestic equities		$	4.6		$	4.6		$	—		$	—		$	—
International equities		1.2			1.2			—			—			—
Bond funds		79.0			0.2			—			—			78.8
Corporate bonds		17.9			—			17.9			—			—
U.S. Treasury and agency bonds		13.6			5.7			7.9			—			—
Mortgage and asset backed securities		0.5			—			0.5			—			—
Cash and cash equivalents		5.4			5.4			—			—			—
Other		0.3			—			0.3			—			—
Total		$	122.5		$	17.1		$	26.6		$	—		$	78.8

Assumed health care cost trend rates have a significant effect on the amounts reported for the health care plans. The cost trend assumptions are detailed in the following tables.


Assumed annual health care cost growth rates as of December 31, 2021	Evergy		Evergy Kansas Central		Evergy Metro
Health care cost trend rate assumed for next year	6.0	%	6.0	%	6.0	%
Rate to which the cost trend is assumed to decline (the ultimate trend rate)	4.5	%	4.5	%	4.5	%
Year that rate reaches ultimate trend	2030		2030		2030

Assumed annual health care cost growth rates as of December 31, 2020	Evergy		Evergy Kansas Central		Evergy Metro
Health care cost trend rate assumed for next year	6.0	%	6.0	%	6.0	%
Rate to which the cost trend is assumed to decline (the ultimate trend rate)	4.5	%	4.5	%	4.5	%
Year that rate reaches ultimate trend	2027		2027		2027

Employee Savings Plans

Evergy has defined contribution savings plans (401(k)) that cover substantially all employees. Evergy matches employee contributions, subject to limits. The annual costs of the plans are detailed in the following table.


	2021		2020		2019
	(millions)
Evergy	$	25.6	$	17.4	$	17.6
Evergy Kansas Central	11.7		9.6		9.6
Evergy Metro	13.9		7.8		8.0

- Definition

The entire disclosure for retirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section S99
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=21916913&loc=d3e273930-122802

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
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-Paragraph 1
-Subparagraph (o)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-URI http://asc.fasb.org/topic&trid=2235017

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 60
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39689-114964

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(03)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (q)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (r)(1)
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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(iii)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (l)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (r)(2)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

+ Details

EQUITY COMPENSATION

12 Months Ended

Dec. 31, 2021

Share-based Payment Arrangement [Abstract]

EQUITY COMPENSATION

Evergy's Long-Term Incentive Plan is an equity compensation plan approved by Evergy shareholders. The Long-Term Incentive Plan permits the grant of restricted stock, restricted stock units, bonus shares, stock options, stock appreciation rights, limited stock appreciation rights, director shares, director deferred share units and performance shares to directors, officers and other employees of Evergy. Common stock shares delivered by Evergy under the Long-Term Incentive Plan may be authorized but unissued, held in the treasury or purchased on the open market (including private purchases) in accordance with applicable securities laws. Evergy has a policy of delivering newly issued shares and does not expect to repurchase common shares during 2022 to satisfy equity compensation payments and director deferred share unit conversion. Forfeiture rates are based on historical forfeitures and future expectations and are reevaluated annually.

The following table summarizes the Evergy Companies' equity compensation expense and the associated income tax benefit.


	2021		2020		2019
Evergy	(millions)
Equity compensation expense	$	15.6	$	15.5	$	15.5
Income tax (expense) benefit	(0.1)		2.2		3.0
Evergy Kansas Central
Equity compensation expense	6.9		7.6		6.7
Income tax (expense) benefit	(0.2)		1.6		1.9
Evergy Metro
Equity compensation expense	5.1		5.7		5.7
Income tax (expense) benefit	(0.6)		0.2		0.3

Restricted Share Units

Evergy utilizes RSUs for new grants of stock-based compensation awards. RSU awards are grants that entitle the holder to receive shares of common stock as the awards vest. These RSU awards are defined as nonvested shares and do not include restrictions once the awards have vested. These RSUs either take the form of RSUs with performance measures that vest upon the achievement of specific performance goals or RSUs with only service requirements that vest solely upon the passage of time.

RSUs with Performance Measures

The payment of RSUs with performance measures is contingent upon achievement of specific performance goals over a stated period of time as approved by the Compensation and Leadership Development Committee of the Board. The numbers of RSUs with performances measures ultimately paid can vary from the numbers of RSUs with performance measures initially granted depending on Evergy's performance over the stated performance periods. Compensation expense for RSUs with performance measures is calculated by recognizing the portion of the fair value for each reporting period for which the requisite service has been rendered. Dividends are accrued over the vesting period and paid in cash based on the number of RSUs with performance measures ultimately paid.

The fair value of RSUs with performance measures is estimated using the market value of Evergy's stock at the valuation date and a Monte Carlo simulation technique that incorporates assumptions for inputs of expected volatilities, dividend yield and risk-free rates. Expected volatility is based on daily stock price change during a historical period commensurate with the remaining term of the performance period of the grant. The risk-free rate is based upon the rate at the time of the evaluation for zero-coupon government bonds with a maturity consistent with the remaining performance period of the grant. The dividend yield is based on the most recent dividends paid and the actual closing stock price on the valuation date. For shares granted in 2021, inputs for expected volatility, dividend yield and the risk-free rate were 32%, 3.99% and 0.24%, respectively.

RSU activity for awards with performance measures for 2021 is summarized in the following table.


	Nonvested Restricted Share Units		Grant Date Fair Value*
Beginning balance January 1, 2021		347,964		$	61.57
Granted		270,277		57.21

Forfeited		(104,526)		64.85
Ending balance December 31, 2021		513,715		58.79

* weighted-average

At December 31, 2021, the remaining weighted-average contractual term related to RSU awards with performance measures was 1.4 years. The weighted-average grant-date fair value of RSUs granted with performance measures was $57.21, $87.98 and $37.87 in 2021, 2020 and 2019, respectively. At December 31, 2021, there was $15.3 million of unrecognized compensation expense related to unvested RSUs with performance measures. No RSUs with performance measures vested in 2021, 2020 and 2019.

RSUs with Only Service Requirements

Evergy measures the fair value of RSUs with only service requirements based on the fair market value of the underlying common stock as of the grant date. RSU awards with only service conditions recognize compensation expense by multiplying shares by the grant-date fair value related to the RSU and recognizing it on a straight-line basis over the requisite service period for the entire award. Dividends are accrued over the vesting period and are invested in additional RSU's subject to the same service conditions.

RSU activity for awards with only service requirements for 2021 is summarized in the following table.


	Nonvested Restricted Share Units		Grant Date Fair Value*
Beginning balance January 1, 2021		160,742		$	59.42
Granted		171,363		55.30
Vested		(43,785)		54.61
Forfeited		(35,274)		59.24
Ending balance December 31, 2021		253,046		57.18

* weighted-average

At December 31, 2021, the remaining weighted-average contractual term related to RSU awards with only service requirements was 1.4 years. The weighted-average grant-date fair value of RSUs granted with only service requirements was $55.30, $68.92 and $54.47 in 2021, 2020 and 2019, respectively. At December 31, 2021, there was $7.0 million of unrecognized compensation expense related to unvested RSUs. The total fair value of RSUs with only service requirements that vested was $2.4 million, $6.5 million and $2.6 million in 2021, 2020 and 2019, respectively.

In addition to RSU's, Evergy also had 36,012 shares and 108,010 shares of restricted stock and performance shares, respectively, that vested in 2021 related to Great Plains Energy equity compensation awards that converted to equivalent Evergy awards at the closing of the Great Plains Energy and Evergy Kansas Central merger in 2018.

SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDIT	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDIT	SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDITIn August 2021, Evergy amended its $2.5 billion master credit facility and extended the maturity until 2026. Evergy, Evergy Kansas Central, Evergy Metro and Evergy Missouri West have borrowing capacity under the master credit facility with specific sublimits for each borrower. These sublimits can be unilaterally adjusted by Evergy for each borrower provided the sublimits remain within minimum and maximum sublimits as specified in the facility. Evergy adjusted these sublimits in the first quarter of 2021 as further detailed in the table below. The applicable interest rates and commitment fees of the facility are subject to upward or downward adjustments, within certain limitations, if Evergy achieves, or fails to achieve, certain sustainability-linked targets based on two key performance indicator metrics: (i) Non-Emitting Generation Capacity and (ii) Diverse Supplier Spend (as defined in the facility). A default by any borrower under the facility or one of its significant subsidiaries on other indebtedness totaling more than $100.0 million constitutes a default by that borrower under the facility. Under the terms of this facility, each of Evergy, Evergy Kansas Central, Evergy Metro and Evergy Missouri West is required to maintain a total indebtedness to total capitalization ratio, as defined in the facility, of not greater than 0.65 to 1.00 at all times. As of December 31, 2021, Evergy, Evergy Kansas Central, Evergy Metro and Evergy Missouri West were in compliance with this covenant.

LONG-TERM DEBT

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

LONG-TERM DEBT

The Evergy Companies' long-term debt is detailed in the following tables.


December 31, 2021	Issuing Entity	Year Due	Evergy		Evergy Kansas Central		Evergy Metro
Mortgage Bonds			(millions)
3.25% Series	Evergy Kansas Central, Inc.	2025	250.0		250.0		—
2.55% Series	Evergy Kansas Central, Inc.	2026	350.0		350.0		—
3.10% Series	Evergy Kansas Central, Inc.	2027	300.0		300.0		—
4.125% Series	Evergy Kansas Central, Inc.	2042	550.0		550.0		—
4.10% Series	Evergy Kansas Central, Inc.	2043	430.0		430.0		—
4.625% Series	Evergy Kansas Central, Inc.	2043	250.0		250.0		—
4.25% Series	Evergy Kansas Central, Inc.	2045	300.0		300.0		—
3.25% Series	Evergy Kansas Central, Inc.	2049	300.0		300.0
3.45% Series	Evergy Kansas Central, Inc.	2050	500.0		500.0		—
6.15% Series	Evergy Kansas South, Inc.	2023	50.0		50.0		—
6.53% Series	Evergy Kansas South, Inc.	2037	175.0		175.0		—
6.64% Series	Evergy Kansas South, Inc.	2038	100.0		100.0		—
4.30% Series	Evergy Kansas South, Inc.	2044	250.0		250.0		—
2.95% EIRR bonds	Evergy Metro, Inc.	2023	79.5		—		79.5
4.125% Series	Evergy Metro, Inc.	2049	400.0		—		400.0
2.25% Series	Evergy Metro, Inc.	2030	400.0		—		400.0
Pollution Control Bonds
0.132% Series(b)	Evergy Kansas Central, Inc.	2032	45.0		45.0		—
0.132% Series(b)	Evergy Kansas Central, Inc.	2032	30.5		30.5		—
0.132% Series(b)	Evergy Kansas South, Inc.	2027	21.9		21.9		—
2.50% Series	Evergy Kansas South, Inc.	2031	50.0		50.0		—
0.132% Series(b)	Evergy Kansas South, Inc.	2032	14.5		14.5		—
0.132% Series(b)	Evergy Kansas South, Inc.	2032	10.0		10.0		—
0.167% Series 2007A and 2007B(b)	Evergy Metro, Inc.	2035	146.5		—		146.5
2.75% Series 2008	Evergy Metro, Inc.	2038	23.4		—		23.4
Senior Notes
3.15% Series(g)	Evergy Metro, Inc.	2023	300.0		—		300.0
3.65% Series(g)	Evergy Metro, Inc.	2025	350.0		—		350.0
6.05% Series (5.78% rate)(a)(g)	Evergy Metro, Inc.	2035	250.0		—		250.0
5.30% Series(g)	Evergy Metro, Inc.	2041	400.0		—		400.0
4.20% Series(g)	Evergy Metro, Inc.	2047	300.0		—		300.0
4.20% Series(g)	Evergy Metro, Inc.	2048	300.0		—		300.0
3.49% Series A(h)	Evergy Missouri West, Inc.	2025	36.0		—		—
4.06% Series B(h)	Evergy Missouri West, Inc.	2033	60.0		—		—
4.74% Series C(h)	Evergy Missouri West, Inc.	2043	150.0		—		—
3.74% Series(h)	Evergy Missouri West, Inc.	2022	100.0		—		—
2.86% Series A(h)	Evergy Missouri West, Inc.	2031	350.0		—		—
3.01% Series B(h)	Evergy Missouri West, Inc.	2033	75.0		—		—
3.21% Series C(h)	Evergy Missouri West, Inc.	2036	75.0		—		—
5.292% Series	Evergy, Inc.(f)	2022	287.5		—		—
2.45% Series	Evergy, Inc.	2024	800.0		—		—
2.90% Series (3.77% rate)(a)	Evergy, Inc.	2029	800.0		—		—
Medium Term Notes
7.33% Series(h)	Evergy Missouri West, Inc.	2023	3.0		—		—
7.17% Series(h)	Evergy Missouri West, Inc.	2023	7.0		—		—
Fair value adjustment(e)			97.9		—		—
Current maturities(c)			(389.3)		—		—
Unamortized debt discount and debt issuance costs			(80.5)		(42.7)		(24.4)
Total excluding current maturities(d)			$	9,297.9	$	3,934.2	$	2,925.0


December 31, 2020	Issuing Entity	Year Due	Evergy		Evergy Kansas Central		Evergy Metro
Mortgage Bonds			(millions)
3.25% Series	Evergy Kansas Central, Inc.	2025	$	250.0	$	250.0	$	—
2.55% Series	Evergy Kansas Central, Inc.	2026	350.0		350.0		—
3.10% Series	Evergy Kansas Central, Inc.	2027	300.0		300.0		—
4.125% Series	Evergy Kansas Central, Inc.	2042	550.0		550.0		—
4.10% Series	Evergy Kansas Central, Inc.	2043	430.0		430.0		—
4.625% Series	Evergy Kansas Central, Inc.	2043	250.0		250.0		—
4.25% Series	Evergy Kansas Central, Inc.	2045	300.0		300.0		—
3.25% Series	Evergy Kansas Central, Inc.	2049	300.0		300.0
3.45% Series	Evergy Kansas Central, Inc.	2050	500.0		500.0		—
6.15% Series	Evergy Kansas South, Inc.	2023	50.0		50.0		—
6.53% Series	Evergy Kansas South, Inc.	2037	175.0		175.0		—
6.64% Series	Evergy Kansas South, Inc.	2038	100.0		100.0		—
4.30% Series	Evergy Kansas South, Inc.	2044	250.0		250.0		—
2.95% EIRR bonds	Evergy Metro, Inc.	2023	79.5		—		79.5
4.125% Series	Evergy Metro, Inc.	2049	400.0		—		400.0
2.25% Series	Evergy Metro, Inc.	2030	400.0		—		400.0
9.44% Series(h)	Evergy Missouri West, Inc.	2021	1.1		—		—
Pollution Control Bonds
0.18% Series(b)	Evergy Kansas Central, Inc.	2032	45.0		45.0		—
0.18% Series(b)	Evergy Kansas Central, Inc.	2032	30.5		30.5		—
0.18% Series(b)	Evergy Kansas South, Inc.	2027	21.9		21.9		—
2.50% Series	Evergy Kansas South, Inc.	2031	50.0		50.0		—
0.18% Series(b)	Evergy Kansas South, Inc.	2032	14.5		14.5		—
0.18% Series(b)	Evergy Kansas South, Inc.	2032	10.0		10.0		—
0.20% Series 2007A and 2007B(b)	Evergy Metro, Inc.	2035	146.5		—		146.5
2.75% Series 2008	Evergy Metro, Inc.	2038	23.4		—		23.4
Senior Notes
3.15% Series(g)	Evergy Metro, Inc.	2023	300.0		—		300.0
3.65% Series(g)	Evergy Metro, Inc.	2025	350.0		—		350.0
6.05% Series (5.78% rate)(a)(g)	Evergy Metro, Inc.	2035	250.0		—		250.0
5.30% Series(g)	Evergy Metro, Inc.	2041	400.0		—		400.0
4.20% Series(g)	Evergy Metro, Inc.	2047	300.0		—		300.0
4.20% Series(g)	Evergy Metro, Inc.	2048	300.0		—		300.0
8.27% Series(h)	Evergy Missouri West, Inc.	2021	80.9		—		—
3.49% Series A	Evergy Missouri West, Inc.	2025	36.0		—		—
4.06% Series B	Evergy Missouri West, Inc.	2033	60.0		—		—
4.74% Series C	Evergy Missouri West, Inc.	2043	150.0		—		—
3.74% Series	Evergy Missouri West, Inc.	2022	100.0		—		—
4.85% Series	Evergy, Inc.(f)	2021	350.0		—		—
5.292% Series	Evergy, Inc.(f)	2022	287.5		—		—
2.45% Series	Evergy, Inc.	2024	800.0		—		—
2.90% Series (3.77% rate)(a)	Evergy, Inc.	2029	800.0		—		—
Medium Term Notes
7.33% Series(h)	Evergy Missouri West, Inc.	2023	3.0		—		—
7.17% Series(h)	Evergy Missouri West, Inc.	2023	7.0		—		—
Fair value adjustment(e)			110.4		—		—
Current maturities(c)			(436.4)		—		—
Unamortized debt discount and debt issuance costs			(84.9)		(45.4)		(26.4)
Total excluding current maturities(d)			$	9,190.9	$	3,931.5	$	2,923.0

(a)Rate after amortizing gains/losses recognized in OCI on settlements of interest rate hedging instruments.

(b)Variable rate.

(c)Evergy's current maturities total as of December 31, 2021 and 2020, includes $1.8 million and $4.4 million, respectively, of fair value adjustments recorded in connection with purchase accounting for the Great Plains Energy and Evergy Kansas Central merger.

(d)At December 31, 2021 and 2020, does not include $50.0 million and $21.9 million of secured Series 2005 Environmental Improvement Revenue Refunding (EIRR) bonds because the bonds were repurchased in September 2015 and are held by Evergy Metro.

(e)Represents the fair value adjustments recorded at Evergy consolidated related to the long-term debt of Great Plains Energy, Evergy Metro and Evergy Missouri West in connection with purchase accounting for the Great Plains Energy and Evergy Kansas Central merger. This amount is not part of future principal payments and will amortize over the remaining life of the associated debt instruments.

(f)Originally issued by Great Plains Energy but assumed by Evergy, Inc. as part of the Great Plains Energy and Evergy Kansas Central merger.

(g)Effectively secured pursuant to the General Mortgage Indenture and Deed of Trust dated as of December 1, 1986, as supplemented (Evergy Metro Mortgage Indenture) through the issuance of collateral mortgage bonds to the trustee in 2019.

(h)Unconditionally guaranteed by Evergy, Inc.

Mortgage Bonds

The Evergy Kansas Central and Evergy Kansas South mortgages each contain provisions restricting the amount of first mortgage bonds (FMBs) that could be issued by each entity. Evergy Kansas Central and Evergy Kansas South must be in compliance with such restrictions prior to the issuance of additional first mortgage bonds or other secured indebtedness. The amount of Evergy Kansas Central FMBs authorized by its Mortgage and Deed of Trust, dated July 1, 1939, as supplemented, is subject to certain limitations as described below. The amount of Evergy Kansas South FMBs authorized by the Evergy Kansas South Mortgage and Deed of Trust, dated April 1, 1940, as supplemented and amended, is limited to a maximum of $3.5 billion, unless amended further. FMBs are secured by utility assets. Amounts of additional FMBs that may be issued are subject to property, earnings and certain restrictive provisions, except in connection with certain refundings, of each mortgage. As of December 31, 2021, approximately $998.9 million and $2,828.6 million principal amounts of additional Evergy Kansas Central FMBs or Evergy Kansas South FMBs, respectively, could be issued under the most restrictive provisions of their mortgages.

Evergy Metro has issued mortgage bonds under the Evergy Metro Mortgage Indenture, which creates a mortgage lien on substantially all Evergy Metro's utility plant. Additional Evergy Metro bonds may be issued on the basis of 75% of property additions or retired bonds. As of December 31, 2021, approximately $5,075.8 million principal amount of additional Evergy Metro mortgage bonds could be issued under the most restrictive provisions in the mortgage.

Senior Notes

Under the terms of the note purchase agreements for certain Evergy Missouri West senior notes, Evergy Missouri West is required to maintain a consolidated indebtedness to consolidated capitalization ratio, as defined in the agreements, not greater than 0.65 to 1.00. In addition, Evergy Missouri West's priority debt, as defined in the agreements, cannot exceed 15% of consolidated tangible net worth, as defined in the agreements. At December 31, 2021, Evergy Missouri West was in compliance with these covenants.

In April 2021, Evergy Missouri West issued in a private placement $350.0 million of 2.86% Series A Senior Notes, maturing in 2031, $75.0 million of 3.01% Series B Senior Notes, maturing in 2033, and $75.0 million of 3.21% Series C Senior Notes, maturing in 2036, pursuant to a note purchase agreement. In connection with the issuance, Evergy entered into an agreement to provide an unconditional guaranty of the Series A, B and C Senior Notes, and as required by certain existing note purchase agreements, also agreed to provide unconditional guaranty of the following series of outstanding Evergy Missouri West unsecured senior notes:

•$36.0 million of 3.49% Series A, maturing in 2025;

•$60.0 million of 4.06% Series B, maturing in 2033;

•$150.0 million of 4.74% Series C, maturing in 2043; and

•$100.0 million of 3.74% Series, maturing in 2022.

In April 2021, Evergy redeemed its $350.0 million of 4.85% Senior Notes, which had a maturity date of June 2021.

In November 2021, Evergy Missouri West repaid its $80.9 million of 8.27% Senior Notes at maturity.

Scheduled Maturities

Evergy's, Evergy Kansas Central's and Evergy Metro's long-term debt maturities for the next five years are detailed in the following table.


	2022		2023		2024		2025		2026
	(millions)
Evergy	$	387.5	$	439.5	$	800.0	$	636.0	$	350.0
Evergy Kansas Central	—		50.0		—		250.0		350.0
Evergy Metro	—		379.5		—		350.0		—

FAIR VALUE MEASUREMENTS

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

Values of Financial Instruments

GAAP establishes a hierarchical framework for disclosing the transparency of the inputs utilized in measuring assets and liabilities at fair value. Management's assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the classification of assets and liabilities within the fair value hierarchy levels. In addition, the Evergy Companies measure certain investments that do not have a readily determinable fair value at net asset value (NAV), which are not included in the fair value hierarchy. Further explanation of these levels and NAV is summarized below.

Level 1 – Quoted prices are available in active markets for identical assets or liabilities. The types of assets and liabilities included in Level 1 are highly liquid and actively traded instruments with quoted prices, such as equities listed on public exchanges.

Level 2 – Pricing inputs are not quoted prices in active markets but are either directly or indirectly observable. The types of assets and liabilities included in Level 2 are certain marketable debt securities, financial instruments traded in less than active markets or other financial instruments priced with models using highly observable inputs.

Level 3 – Significant inputs to pricing have little or no transparency. The types of assets and liabilities included in Level 3 are those with inputs requiring significant management judgment or estimation.

NAV - Investments that do not have a readily determinable fair value are measured at NAV. These investments do not consider the observability of inputs and, therefore, they are not included within the fair value hierarchy. The Evergy Companies include in this category investments in private equity, real estate and alternative investment funds that do not have a readily determinable fair value. The underlying alternative investments include collateralized debt obligations, mezzanine debt and a variety of other investments.

The Evergy Companies record cash and cash equivalents, accounts receivable and short-term borrowings on their consolidated balance sheets at cost, which approximates fair value due to the short-term nature of these instruments.

Interest Rate Derivatives

The Evergy Companies are exposed to market risks arising from changes in interest rates and may use derivative instruments to manage these risks. From time to time, risk management activities may include entering into interest rate swap agreements to protect against unfavorable interest rate changes relating to forecasted debt transactions. These interest rate swap agreements can be designated as cash flow hedges, in which case gains and losses on the interest rate swaps are deferred in other comprehensive income to be recognized as an adjustment to interest expense over the same period that the hedged interest payments affect earnings. The Evergy Companies classify all cash inflows and outflows for interest rate swap agreements accounted for as cash flow hedges of forecasted debt transactions as financing activities on their consolidated statements of cash flows.

In September 2019, Evergy issued $800.0 million of 2.90% Senior Notes maturing in 2029 and paid $69.8 million to settle an interest rate swap agreement with a notional amount of $500.0 million that was designated as a cash flow hedge of interest payments on the debt issuance. The $69.8 million pre-tax loss was recorded in accumulated other comprehensive loss on Evergy's consolidated balance sheet and is being reclassified into interest expense over

the ten-year term of the debt. For 2021, 2020 and 2019, $7.0 million, $7.0 million and $2.0 million, respectively, were reclassified from accumulated other comprehensive loss to interest expense on Evergy's consolidated statements of comprehensive income. For 2021, 2020 and 2019, $(1.5) million, $(4.0) million and $(0.5) million, respectively, were reclassified from accumulated other comprehensive loss to income tax expense on Evergy's consolidated statements of comprehensive income. As of December 31, 2021, Evergy expects to amortize $5.4 million to earnings from accumulated other comprehensive loss over the next twelve months.

Fair Value of Long-Term Debt

The Evergy Companies measure the fair value of long-term debt using Level 2 measurements available as of the measurement date. The book value and fair value of the Evergy Companies' long-term debt and long-term debt of variable interest entities is summarized in the following table.



	December 31, 2021				December 31, 2020
	Book Value		Fair Value		Book Value		Fair Value
Long-term debt(a)	(millions)
Evergy(b)	$	9,687.2	$	10,758.5	$	9,627.3	$	11,274.2
Evergy Kansas Central	3,934.2		4,522.5		3,931.5		4,801.7
Evergy Metro	2,925.0		3,400.8		2,923.0		3,591.2
Long-term debt of variable interest entities(a)
Evergy	$	—	$	—	$	18.8	$	19.1
Evergy Kansas Central	—		—		18.8		19.1

(a) Includes current maturities.

(b) Book value as of December 31, 2021 and 2020, includes $97.9 million and $110.4 million, respectively, of fair value adjustments recorded in connection with purchase accounting for the Great Plains Energy and Evergy Kansas Central merger, which are not part of future principal payments and will amortize over the remaining life of the associated debt instrument.

Recurring Fair Value Measurements

The following tables include the Evergy Companies' balances of financial assets and liabilities measured at fair value on a recurring basis.


Description	December 31, 2021			Level 1		Level 2			Level 3			NAV
Evergy Kansas Central		(millions)
Assets
Nuclear decommissioning trust(a)
Domestic equity funds		$	140.4	$	126.5		$	—		$	—		$	13.9
International equity funds		74.0		74.0			—			—			—
Core bond fund		58.1		58.1			—			—			—
High-yield bond fund		29.6		29.6			—			—			—
Emerging markets bond fund		18.0		18.0			—			—			—

Alternative investments fund		32.7		—			—			—			32.7
Real estate securities fund		15.2		—			—			—			15.2
Cash equivalents		0.4		0.4			—			—			—

Total nuclear decommissioning trust		368.4		306.6			—			—			61.8
Rabbi trust
Fixed income funds		19.6		19.6			—			—			—
Equity funds		9.5		9.5			—			—			—
Combination debt/equity/other fund		2.4		2.4			—			—			—
Cash equivalents		0.2		0.2			—			—			—
Total rabbi trust		31.7		31.7			—			—			—
Total		$	400.1	$	338.3		$	—		$	—		$	61.8
Evergy Metro
Assets
Nuclear decommissioning trust(a)
Equity securities		$	299.2	$	299.2		$	—		$	—		$	—
Debt securities
U.S. Treasury		46.1		46.1			—			—			—
U.S. Agency		0.4		—			0.4			—			—
State and local obligations		4.0		—			4.0			—			—
Corporate bonds		43.7		—			43.7			—			—
Foreign governments		0.1		—			0.1			—			—
Cash equivalents		6.8		6.8			—			—			—
Other		—		—			—			—			—
Total nuclear decommissioning trust		400.3		352.1			48.2			—			—
Self-insured health plan trust(b)
Equity securities		2.0		2.0			—			—			—
Debt securities		8.7		2.7			6.0			—			—
Cash and cash equivalents		1.8		1.8			—			—			—
Total self-insured health plan trust		12.5		6.5			6.0			—			—
Total		$	412.8	$	358.6		$	54.2		$	—		$	—
Other Evergy
Other Evergy investments
Equity securities(c)		$	31.4	$	—		$	31.4		$	—		$	—
Total other Evergy investments		31.4		—			31.4			—			—
Rabbi trusts
Core bond fund		12.5		12.5			—			—			—

Total rabbi trusts		12.5		12.5			—			—			—



Total		$	43.9	$	12.5		$	31.4		$	—		$	—
Evergy
Assets
Nuclear decommissioning trust(a)		$	768.7	$	658.7		$	48.2		$	—		$	61.8
Rabbi trusts		44.2		44.2			—			—			—
Self-insured health plan trust(b)		12.5		6.5			6.0			—			—
Other Evergy investments(c)		31.4		—			31.4			—			—
Total		$	856.8	$	709.4		$	85.6		$	—		$	61.8


Description	December 31, 2020			Level 1			Level 2			Level 3			NAV
Evergy Kansas Central		(millions)
Assets
Nuclear decommissioning trust(a)
Domestic equity funds		$	102.7		$	95.1		$	—		$	—		$	7.6
International equity funds		63.8			63.8			—			—			—
Core bond fund		40.6			40.6			—			—			—
High-yield bond fund		25.0			25.0			—			—			—
Emerging markets bond fund		21.0			21.0			—			—			—
Combination debt/equity/other fund		20.1			20.1			—			—			—
Alternative investments fund		23.2			—			—			—			23.2
Real estate securities fund		12.9			—			—			—			12.9
Cash equivalents		0.5			0.5			—			—			—
Total nuclear decommissioning trust		309.8			266.1			—			—			43.7
Rabbi trust
Core bond fund		25.6			—			—			—			25.6
Combination debt/equity/other fund		7.1			—			—			—			7.1

Total rabbi trust		32.7			—			—			—			32.7
Total		$	342.5		$	266.1		$	—		$	—		$	76.4
Evergy Metro
Assets
Nuclear decommissioning trust(a)
Equity securities		$	243.1		$	243.1		$	—		$	—		$	—
Debt securities
U.S. Treasury		47.7			47.7			—			—			—
U.S. Agency		0.5			—			0.5			—			—
State and local obligations		4.1			—			4.1			—			—
Corporate bonds		43.1			—			43.1			—			—
Foreign governments		0.1			—			0.1			—			—
Cash equivalents		3.2			3.2			—			—			—
Other		0.5			0.5			—			—			—
Total nuclear decommissioning trust		342.3			294.5			47.8			—			—
Self-insured health plan trust(b)
Equity securities		1.7			1.7			—			—			—
Debt securities		8.0			2.8			5.2			—			—
Cash and cash equivalents		3.5			3.5			—			—			—
Total self-insured health plan trust		13.2			8.0			5.2			—			—
Total		$	355.5		$	302.5		$	53.0		$	—		$	—
Other Evergy
Assets
Rabbi trusts
Fixed income fund		$	13.1		$	—		$	—		$	—		$	13.1
Cash and cash equivalents		0.5			0.5			—			—			—
Total rabbi trusts		$	13.6		$	0.5		$	—		$	—		$	13.1



Evergy
Assets
Nuclear decommissioning trust(a)		$	652.1		$	560.6		$	47.8		$	—		$	43.7
Rabbi trust		46.3			0.5			—			—			45.8
Self-insured health plan trust(b)		13.2			8.0			5.2			—			—
Total		$	711.6		$	569.1		$	53.0		$	—		$	89.5

(a)With the exception of investments measured at NAV, fair value is based on quoted market prices of the investments held by the trust and/or valuation models.

(b)Fair value is based on quoted market prices of the investments held by the trust. Debt securities classified as Level 1 are comprised of U.S. Treasury securities. Debt securities classified as Level 2 are comprised of corporate bonds, U.S. Agency, state and local obligations, and other asset-backed securities.

(c)Fair value is based on quoted market prices adjusted for a discount for lack of marketability based on a valuation model due to a restriction on the sale of the stock.

Certain Evergy and Evergy Kansas Central investments included in the table above are measured at NAV as they do not have readily determinable fair values. In certain situations, these investments may have redemption restrictions.

The following table provides additional information on these Evergy and Evergy Kansas Central investments.


	December 31, 2021				December 31, 2020				December 31, 2021
	Fair		Unfunded		Fair		Unfunded		Redemption	Length of
	Value		Commitments		Value		Commitments		Frequency	Settlement
Evergy Kansas Central	(millions)
Nuclear decommissioning trust:
Domestic equity funds	$	13.9	$	1.7	$	7.6	$	2.2	(a)	(a)
Alternative investments fund(b)	32.7		—		23.2		—		Quarterly	65 days
Real estate securities fund(b)	15.2		—		12.9		—		Quarterly	65 days
Total	$	61.8	$	1.7	$	43.7	$	2.2
Rabbi trust:
Core bond fund	$	—	$	—	$	25.6	$	—	(c)	(c)
Combination debt/equity/other fund	—		—		7.1		—		(c)	(c)
Total	$	—	$	—	$	32.7	$	—
Other Evergy
Rabbi trust:
Fixed income fund	$	—	$	—	$	13.1	$	—	(c)	(c)
Total Evergy investments at NAV	$	61.8	$	1.7	$	89.5	$	2.2

(a)This investment is in five long-term private equity funds that do not permit early withdrawal. Investments in these funds cannot be distributed until the underlying investments have been liquidated, which may take years from the date of initial liquidation. Three funds have begun to make distributions. The initial investment in the fourth and fifth funds occurred in 2016 and 2018, respectively. The fourth fund's term is 15 years, subject to the general partner's right to extend the term for up to three additional one-year periods. The fifth fund's term is 15 years, subject to additional extensions approved by a fund advisory committee to provide for an orderly liquidation of fund investments and dissolution of the fund.

(b)There is a holdback on final redemptions.

(c)This investment can be redeemed immediately and is not subject to any restrictions on redemptions.

The Evergy Companies hold equity and debt investments classified as securities in various trusts including for the purposes of funding the decommissioning of Wolf Creek and for the benefit of certain retired executive officers of Evergy Kansas Central. The Evergy Companies record net realized and unrealized gains and losses on the nuclear decommissioning trusts in regulatory liabilities on their consolidated balance sheets and record net realized and unrealized gains and losses on the Evergy Companies' rabbi trusts in the consolidated statements of income and comprehensive income.

The following table summarizes the net unrealized gains (losses) for the Evergy Companies' nuclear decommissioning trusts and rabbi trusts.



		2021		2020		2019
Evergy	(millions)
Nuclear decommissioning trust - equity securities		$	101.8	$	45.5	74.0
Nuclear decommissioning trust - debt securities		(4.5)		5.3		5.1
Rabbi trusts - equity securities		(1.8)		(5.6)		3.1
Total		$	95.5	$	45.2	$	82.2
Evergy Kansas Central
Nuclear decommissioning trust - equity securities		$	50.5	$	21.9	33.3
Rabbi trust - equity securities		(1.4)		(6.1)		3.2
Total		$	49.1	$	15.8	$	36.5
Evergy Metro
Nuclear decommissioning trust - equity securities		$	51.3	$	23.6	40.7
Nuclear decommissioning trust - debt securities		(4.5)		5.3		5.1
Total		$	46.8	$	28.9	$	45.8

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

COMMITMENTS AND CONTINGENCIES

12 Months Ended

Dec. 31, 2021

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

Environmental Matters

Set forth below are descriptions of contingencies related to environmental matters that may impact the Evergy Companies' operations or their financial results. Management's assessment of these contingencies, which are based on federal and state statutes and regulations, and regulatory agency and judicial interpretations and actions, has evolved over time. These laws, regulations, interpretations and actions can also change, restrict or otherwise impact the Evergy Companies' operations or financial results. The failure to comply with these laws, regulations, interpretations and actions could result in the assessment of administrative, civil and criminal penalties and the imposition of remedial requirements. The Evergy Companies believe that all their operations are in substantial compliance with current federal, state and local environmental standards.

There are a variety of final and proposed laws and regulations that could have a material adverse effect on the Evergy Companies' operations and consolidated financial results. Due in part to the complex nature of environmental laws and regulations, the Evergy Companies are unable to assess the impact of potential changes that may develop with respect to the environmental contingencies described below.

Clean Air Act - Startup, Shutdown and Malfunction (SSM) Regulation

In 2015, the EPA issued a final rule addressing how state implementation plans (SIPs) can treat excess emissions during SSM events. This rule was referred to as the 2015 SIP Call Rule. The rule required 36 states to submit SIP revisions by November 2016 to remove certain exemptions and other discretionary enforcement provisions that apply to excess emissions during SSM events. Legal challenges ensued and the case was eventually placed in abeyance. In December 2021, the U.S. Court of Appeals for the D.C. Circuit (D.C. Circuit) restarted the 2015 SIP Call Rule litigation. The outcome of this case could result in required SIP revisions in Oklahoma, Kansas and Missouri which could have a material impact on the Evergy Companies.

Ozone Interstate Transport State Implementation Plans

In 2015, the EPA lowered the Ozone National Ambient Air Quality Standards (NAAQS) from 75 ppb to 70 ppb. Impacted states were required to submit Interstate Transport State Implementation Plans (ITSIPs) in 2018 to comply with the good neighbor provisions of the Clean Air Act. The EPA did not act on these ITSIP submissions and was challenged in a court filing in May 2021 to address them. In January 2022, the U.S. District Court for the Northern District of California entered a final consent decree between the EPA and various environmental groups requiring the EPA to approve or disapprove, in whole or in part, by February 28, 2022, the ITSIPs for the 2015 Ozone NAAQS, for twenty-one states including Kansas, Missouri and Oklahoma. For any ITSIP fully or partially

disapproved by the EPA along with a corresponding federal implementation plan (FIP) proposed by February 28, 2022, the consent decree requires the EPA to sign a final action on the ITSIP for the affected state by December 15, 2022. On January 25, 2022, the EPA transmitted a proposed FIP to the Office of Management and Budget for review. On February 8, 2022, the EPA published a proposed approval of the Kansas ITSIP in the Federal Register. On February 22, 2022, the EPA published proposed disapprovals of ITSIPs for nineteen states including Missouri and Oklahoma. The EPA is also in the process of reconsidering the 2020 Ozone NAAQS and the 2020 PM2.5 NAAQS. Due to uncertainty regarding the disposition of these 2015 Ozone NAAQS ITSIPs for Kansas, Missouri and Oklahoma, along with potential lowering of the 2020 NAAQS, the Evergy Companies cannot determine the impacts on their operations or consolidated financial results, but the cost to comply with a FIP or a lower future NAAQS could be material.

Regional Haze Rule

In 1999, the EPA finalized the Regional Haze Rule which aims to restore national parks and wilderness areas to pristine conditions. The rule requires states in coordination with the EPA, the National Park Service, the U.S. Fish and Wildlife Service, the U.S. Forest Service, and other interested parties to develop and implement air quality protection plans to reduce the pollution that causes visibility impairment. There are 156 "Class I" areas across the U.S. that must be restored to pristine conditions by the year 2064. There are no Class I areas in Kansas, whereas Missouri has two: the Hercules-Glades Wilderness Area and the Mingo Wilderness Area. States must submit revisions to their Regional Haze Rule SIPs every ten years and the first round was due in 2007. For the second ten-year implementation period, the EPA issued a final rule revision in 2017 that allowed states to submit their SIP revisions by July 31, 2021. The Evergy Companies have been in contact with the Kansas Department of Health and Environmental (KDHE) and the Missouri Department of Natural Resources (MDNR) as they worked to draft their SIP revisions. The Missouri SIP revision is still being drafted. MDNR has indicated they intend to submit the Missouri SIP revision in early 2022 and that it will not require any additional reductions from the Evergy Companies' generating units in the state. The Kansas SIP revision was placed on public notice in June 2021 and requested no additional emission reductions by electric utilities based on the significant reductions that were achieved during the first implementation period. The EPA provided comments on the Kansas SIP revision in June 2021 that each state is statutorily required to conduct a "four-factor analysis" on at least two sources within the state to help determine if further emission reductions are necessary. The EPA also stated it would be difficult to approve the Kansas SIP revision if at least two four-factor analyses are not conducted on Kansas emission sources. KDHE submitted the Kansas SIP revision in July 2021. If a Kansas generating unit of the Evergy Companies is selected for analysis, the possibility exists that the state or EPA, through a FIP, could determine that additional operational or physical modifications are required on the generating unit to further reduce emissions. The overall cost of those modifications could be material to the Evergy Companies.

Greenhouse Gases

Burning coal and other fossil fuels releases carbon dioxide (CO2) and other gases referred to as greenhouse gases (GHG). Various regulations under the federal Clean Air Act Amendments of 1990 (CAA) limit CO2 and other GHG emissions, and in addition, other measures are being imposed or offered by individual states, municipalities and regional agreements with the goal of reducing GHG emissions.

In July 2019, the EPA published the final Affordable Clean Energy (ACE) rule in the Federal Register. This rule contained emission guidelines for GHG emissions from existing electric utility generating units (EGUs) and revisions to emission guideline implementing regulations. The rule defined the "best system of emission reduction" (BSER) for GHG emissions from existing coal-fired EGUs as on-site, heat-rate efficiency improvements. In conjunction with the finalization of the ACE rule, the EPA repealed its previously adopted Clean Power Plan (CPP). In January 2021, the D.C. Circuit vacated and remanded the ACE rule back to the EPA. In October 2021, the Supreme Court granted petitions for certiorari to review the D.C. Circuit decision to vacate and remand the ACE rule. A ruling from the Supreme Court is expected in mid-2022.

Due to uncertainty regarding the future of the ACE rule or other potential GHG regulations, the Evergy Companies cannot determine the impacts on their operations or consolidated financial results, but the cost to comply with the ACE rule or other potential GHG rules could be material.

Water

The Evergy Companies discharge some of the water used in generation and other operations containing substances deemed to be pollutants. A November 2015 EPA rule applicable to steam-electric power generating plants establishes effluent limitations guidelines (ELG) and standards for wastewater discharges, including limits on the amount of toxic metals and other pollutants that can be discharged. Implementation timelines for this 2015 rule vary from 2018 to 2023. In April 2019, the U.S. Court of Appeals for the 5th Circuit (5th Circuit) issued a ruling that vacated and remanded portions of the original ELG rule. Due to this ruling, the EPA announced a plan in July 2021 to release a proposed rulemaking in September 2022 to address the vacated limitations for legacy wastewater and landfill leachate. Future ELG modifications for the best available technology economically achievable for the discharge of legacy wastewater and landfill leachate are likely and could be material to the Evergy Companies.

In October 2020, the EPA published the final ELG reconsideration rule. This rule adjusts numeric limits for flue gas desulfurization (FGD) wastewater and adds a 10% volumetric purge limit for bottom ash transport water. The timeline for final FGD wastewater compliance is as soon as possible on or after one year following publication of the final rule in the Federal Register but no later than December 31, 2025. In August 2021, the EPA published notice in the Federal Register that it is initiating a supplemental rulemaking to revise the ELG regulations after completing review of the reconsideration rule as a result of an executive order from President Biden. As part of the rulemaking process, the EPA will determine if more stringent limitations and standards are appropriate. The 2020 ELG reconsideration rule will remain in effect while the EPA undertakes this new rulemaking.

The Evergy Companies have reviewed the 2020 ELG reconsideration regulation, and the costs to comply with these changes are not expected to be material. However, the Evergy Companies cannot predict what revisions the EPA may make under its supplemental rulemaking to revise the ELG regulations, and compliance costs associated with any revisions could be material.

After reviewing the Navigable Waters Protection Rule as directed by President Biden's administration, the EPA and Department of the Army determined a need to revise the definition to prevent environmental degradation. In December 2021, the EPA and the Department of the Army published a proposed rule that repeals the Navigable Waters Protection Rule and revises the definition of “Waters of the United States.” This proposed rule restores definitions of Waters of the United States that were in place prior to 2015. The Evergy Companies are reviewing the proposed rule and the impact on their operations or consolidated financial results could be material. A second rulemaking is expected in the future which will replace the Navigable Waters Protection Rule. The cost to comply with any future rulemaking that replaces the Navigable Waters Protection Rule could be material to the Evergy Companies.

Regulation of Coal Combustion Residuals

In the course of operating their coal generation plants, the Evergy Companies produce CCRs, including fly ash, gypsum and bottom ash. The EPA published a rule to regulate CCRs in April 2015 that requires additional CCR handling, processing and storage equipment and closure of certain ash disposal units.

The Evergy Companies have recorded AROs for their current estimates for the closure of ash disposal ponds and landfills, but the revision of these AROs may be required in the future due to changes in existing CCR regulations, the results of groundwater monitoring of CCR units or changes in interpretation of existing CCR regulations or changes in the timing or cost to close ash disposal ponds and landfills. If revisions to these AROs are necessary, the impact on the Evergy Companies' operations or consolidated financial results could be material.

Nuclear Insurance

Nuclear liability, property and accidental outage insurance is maintained for Wolf Creek. These policies contain certain industry standard terms, conditions and exclusions, including, but not limited to, ordinary wear and tear and war. An industry aggregate limit of $3.2 billion for nuclear events ($1.8 billion of non-nuclear events) plus any reinsurance, indemnity or any other source recoverable by Nuclear Electric Insurance Limited (NEIL), provider of property and accidental outage insurance, exists for acts of terrorism affecting Wolf Creek or any other NEIL insured plant within 12 months from the date of the first act. In addition, participation is required in industry-wide retrospect assessment programs as discussed below.

Nuclear Liability Insurance

Pursuant to the Price-Anderson Act, liability insurance includes coverage against public nuclear liability claims resulting from nuclear incidents to the required limit of public liability, which is approximately $13.6 billion. This limit of liability consists of the maximum available commercial insurance of $0.5 billion and the remaining $13.1 billion is provided through mandatory participation in an industry-wide retrospective assessment program. Under this retrospective assessment program, the owners of Wolf Creek are jointly and severally subject to an assessment of up to $137.6 million (Evergy's share is $129.4 million and each of Evergy Kansas Central's and Evergy Metro's is $64.7 million), payable at no more than $20.5 million (Evergy's share is $19.2 million and each of Evergy Kansas Central's and Evergy Metro's is $9.6 million) per incident per year per reactor for any commercial U.S. nuclear reactor qualifying incident. Both the total and yearly assessment is subject to an inflationary adjustment based on the Consumer Price Index and applicable premium taxes. In addition, the U.S. Congress could impose additional revenue-raising measures to pay claims.

Nuclear Property and Accidental Outage Insurance

The owners of Wolf Creek carry decontamination liability, nuclear property damage and premature nuclear decommissioning liability insurance for Wolf Creek totaling approximately $2.8 billion. Insurance coverage for non-nuclear property damage accidents total approximately $2.3 billion. In the event of an extraordinary nuclear accident, insurance proceeds must first be used for reactor stabilization and site decontamination in accordance with a plan mandated by the NRC. The Evergy Companies' share of any remaining proceeds can be used to pay for property damage or, if certain requirements are met, including decommissioning the plant, toward a shortfall in the nuclear decommissioning trust fund. The owners also carry additional insurance with NEIL to help cover costs of replacement power and other extra expenses incurred during a prolonged outage resulting from accidental property damage at Wolf Creek. If significant losses were incurred at any of the nuclear plants insured under the NEIL policies, the owners of Wolf Creek may be subject to retrospective assessments under the current policies of approximately $30.0 million (Evergy's share is $28.2 million and each of Evergy Kansas Central's and Evergy Metro's is $14.1 million).

Nuclear Insurance Considerations

Although the Evergy Companies maintain various insurance policies to provide coverage for potential losses and liabilities resulting from an accident or an extended outage, the insurance coverage may not be adequate to cover the costs that could result from a catastrophic accident or extended outage at Wolf Creek. Any substantial losses not covered by insurance, to the extent not recoverable in prices, would have a material effect on the Evergy Companies' consolidated financial results.

Contractual Commitments - Fuel and Power

The Evergy Companies' contractual commitments for fuel and power at December 31, 2021 are detailed in the following tables. See Notes 9, 12 and 20 for information regarding pension, long-term debt and lease commitments, respectively.


Evergy
	2022		2023		2024		2025		2026		After 2026			Total
Purchase commitments	(millions)
Fuel	$	403.1	$	183.5	$	130.2	$	100.4	$	106.7		$	221.1		$	1,145.0
Power	63.0		63.6		58.0		58.4		58.4			294.2			595.6

Total fuel and power commitments	$	466.1	$	247.1	$	188.2	$	158.8	$	165.1		$	515.3		$	1,740.6


Evergy Kansas Central
	2022		2023		2024		2025		2026		After 2026			Total
Purchase commitments	(millions)
Fuel	$	232.4	$	102.6	$	83.3	$	69.4	$	72.6		$	121.3		$	681.6
Power	0.9		0.9		0.9		0.9		0.9			3.6			8.1

Total fuel and power commitments	$	233.3	$	103.5	$	84.2	$	70.3	$	73.5		$	124.9		$	689.7


Evergy Metro
	2022		2023		2024		2025		2026		After 2026			Total
Purchase commitments	(millions)
Fuel	$	145.3	$	73.7	$	43.3	$	28.4	$	31.4		$	99.8		$	421.9
Power	35.1		35.3		29.2		29.2		29.2			166.9			324.9

Total fuel and power commitments	$	180.4	$	109.0	$	72.5	$	57.6	$	60.6		$	266.7		$	746.8

Fuel commitments consist of commitments for nuclear fuel, coal and coal transportation. Power commitments consist of certain commitments for renewable energy under power purchase agreements, capacity purchases and firm transmission service.

GUARANTEES	12 Months Ended
GUARANTEES	Dec. 31, 2021
Guarantees [Abstract]
GUARANTEES	GUARANTEES In the ordinary course of business, Evergy and certain of its subsidiaries enter into various agreements providing financial or performance assurance to third parties on behalf of certain subsidiaries. Such agreements include, for example, guarantees and letters of credit. These agreements are entered into primarily to support or enhance the creditworthiness otherwise attributed to a subsidiary on a stand-alone basis, thereby facilitating the extension of sufficient credit to accomplish the subsidiary's intended business purposes. The majority of these agreements guarantee Evergy's own future performance, so a liability for the fair value of the obligation is not recorded. At December 31, 2021, Evergy has provided $904.0 million of credit support for certain of its subsidiaries as follows: •Evergy direct guarantees to Evergy Kansas Central and Evergy Metro counterparties for certain fuel supply contracts totaling $48.0 million, which expire in 2027; and •Evergy's guarantee of Evergy Missouri West long-term debt totaling $856.0 million, which includes debt with maturity dates ranging from 2022 to 2043. Evergy has also guaranteed Evergy Missouri West's commercial paper program. At December 31, 2021, Evergy Missouri West had $395.3 million of commercial paper outstanding. None of the guaranteed obligations are subject to default or prepayment if Evergy Missouri West's credit ratings were downgraded.

RELATED PARTY TRANSACTIONS AND RELATIONSHIPS

12 Months Ended

Dec. 31, 2021

In the normal course of business, Evergy Kansas Central, Evergy Metro and Evergy Missouri West engage in related party transactions with one another. A summary of these transactions and the amounts associated with them is provided below.

Jointly-Owned Plants and Shared Services

Employees of Evergy Kansas Central and Evergy Metro manage Evergy Missouri West's business and operate its facilities at cost, including Evergy Missouri West's 18% ownership interest in Evergy Metro's Iatan Nos. 1 and 2. Employees of Evergy Kansas Central manage Jeffrey Energy Center (JEC) and operate its facilities at cost, including Evergy Missouri West's 8% ownership interest in JEC. Employees of Evergy Metro manage La Cygne Station and operate its facilities at cost, including Evergy Kansas Central's 50% interest in La Cygne Station. Employees of Evergy Metro and Evergy Kansas Central also provide one another with shared service support, including costs related to human resources, information technology, accounting and legal services.

The operating expenses and capital costs billed for jointly-owned plants and shared services are detailed in the following table.



		2021		2020		2019
	(millions)
Evergy Kansas Central billings to Evergy Missouri West		$	32.5	$	37.6	$	24.9
Evergy Metro billings to Evergy Missouri West		142.1		168.7		172.8
Evergy Kansas Central billings to Evergy Metro		29.4		34.7		40.6
Evergy Metro billings to Evergy Kansas Central		134.7		130.8		154.9

Money Pool

Evergy Kansas Central, Evergy Metro and Evergy Missouri West are authorized to participate in the Evergy, Inc. money pool, which is an internal financing arrangement in which funds may be lent on a short-term basis between Evergy Kansas Central, Evergy Metro, Evergy Missouri West and Evergy, Inc. Evergy, Inc. can lend but not borrow under the money pool. The Evergy, Inc. money pool was amended in July 2021 to include Evergy Kansas Central as a participant.

At December 31, 2021, Evergy Metro had a $155.0 million outstanding receivable from Evergy Missouri West under the money pool. At December 31, 2020, Evergy Metro had a $100.0 million outstanding receivable from Evergy Missouri West under the money pool.

Related Party Net Receivables and Payables

The following table summarizes Evergy Kansas Central's and Evergy Metro's related party net receivables and payables.



	December 31
	2021		2020
Evergy Kansas Central	(millions)
Net receivable from (payable to) Evergy	$	(2.2)	$	0.1
Net payable to Evergy Metro	(14.5)		(21.7)
Net receivable from Evergy Missouri West	10.4		6.6

Evergy Metro
Net receivable from Evergy	$	8.7	$	15.7
Net receivable from Evergy Kansas Central	14.5		21.7
Net receivable from Evergy Missouri West	254.5		188.1

Tax Allocation Agreement

Evergy files a consolidated federal income tax return as well as unitary and combined income tax returns in several state jurisdictions with Kansas and Missouri being the most significant. Income taxes for consolidated or combined subsidiaries are allocated to the subsidiaries based on separate company computations of income or loss. The following table summarizes Evergy Kansas Central's and Evergy Metro's income taxes receivable from (payable to) Evergy.



	December 31
	2021		2020
Evergy Kansas Central	(millions)
Income taxes receivable from Evergy	$	9.6	$	25.3

Evergy Metro
Income taxes receivable from (payable to) Evergy	$	(2.5)	$	3.2

SHAREHOLDERS' EQUITY	12 Months Ended
SHAREHOLDERS' EQUITY	Dec. 31, 2021
Stockholders' Equity Note [Abstract]
SHAREHOLDERS' EQUITY	SHAREHOLDERS' EQUITY Evergy's authorized capital stock consists of 600 million shares of common stock, without par value, and 12 million shares of Preference Stock, without par value. Bluescape Energy Partners, LLC (Bluescape) Securities Purchase Agreement In February 2021, Evergy entered into a securities purchase agreement with an affiliate of Bluescape. Pursuant to the securities purchase agreement, an affiliate of Bluescape agreed to purchase 2,269,447 shares of Evergy’s common stock for approximately $113.2 million and to receive a warrant to purchase up to 3,950,000 additional shares of Evergy’s common stock. Under the terms of the warrant, Evergy will have the option to elect a net cash settlement with respect to the exercise of the warrant under certain circumstances, or to net settle in shares of Evergy’s common stock. The warrant expires three years from issuance and has an exercise price equal to $64.70 per share. Following the satisfaction of customary closing conditions, Evergy completed the sale of its common stock and warrant to the affiliate of Bluescape in April 2021 for $112.5 million, net of issuance costs of $0.7 million. The Executive Chairman of Bluescape, C. John Wilder, joined the Evergy Board in March 2021. Evergy Registration Statements In September 2021, Evergy filed an automatic registration statement providing for the sale of unlimited amounts of securities with the SEC, which expires in September 2024. In September 2021, Evergy registered shares of its common stock with the SEC for its Dividend Reinvestment and Direct Stock Purchase Plan. Shares issued under the plan may be either newly issued shares or shares purchased on the open market. Evergy has registered shares of its common stock with the SEC for the Evergy, Inc. 401(k) Savings Plan. Shares issued under the plan may be either newly issued shares or shares purchased on the open market. Dividend Restrictions Evergy depends on its subsidiaries to pay dividends on its common stock. The Evergy Companies have certain restrictions stemming from statutory requirements, corporate organizational documents, covenants and other conditions that could affect dividend levels or the ability to pay dividends. The KCC order authorizing the merger transaction requires Evergy to maintain consolidated common equity of at least 35% of total consolidated capitalization. Under the Federal Power Act, Evergy Kansas Central, Evergy Metro and Evergy Missouri West generally can pay dividends only out of retained earnings. Certain conditions in the MPSC and KCC orders authorizing the merger transaction also require Evergy Kansas Central and Evergy Metro to maintain consolidated common equity of at least 40% of total capitalization. Other conditions in the MPSC and KCC merger orders require Evergy Kansas Central, Evergy Metro and Evergy Missouri West to maintain credit ratings of at least investment grade. If Evergy Kansas Central's, Evergy Metro's or Evergy Missouri West's credit ratings are downgraded below the investment grade level as a result of their affiliation with Evergy or any of Evergy's affiliates, the impacted utility shall not pay a dividend to Evergy without KCC or MPSC approval or until the impacted utility's investment grade credit rating has been restored. The master credit facility of Evergy, Evergy Kansas Central, Evergy Metro and Evergy Missouri West and the note purchase agreements for certain Evergy Missouri West senior notes contain covenants requiring the respective company to maintain a consolidated indebtedness to consolidated total capitalization ratio of not more than 0.65 to 1.00 at all times. As of December 31, 2021, all of Evergy's and Evergy Kansas Central's retained earnings and net income were free of restrictions and Evergy Metro had a retained earnings restriction of $386.9 million. As of December 31, 2021, Evergy's subsidiaries had restricted net assets of approximately $5.7 billion. These restrictions are not expected to affect the Evergy Companies' ability to pay dividends at the current level for the foreseeable future.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Subparagraph (d)
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-URI http://asc.fasb.org/topic&trid=2208762

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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Reference 14: http://www.xbrl.org/2003/role/disclosureRef
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Reference 15: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

VARIABLE INTEREST ENTITIES

12 Months Ended

Dec. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

VARIABLE INTEREST ENTITIES

In determining the primary beneficiary of a VIE, the Evergy Companies assess the entity's purpose and design, including the nature of the entity's activities and the risks that the entity was designed to create and pass through to its variable interest holders. A reporting enterprise is deemed to be the primary beneficiary of a VIE if it has (a) the power to direct the activities of the VIE that most significantly impact the VIE's economic performance and (b) the obligation to absorb losses or right to receive benefits from the VIE that could potentially be significant to the VIE. The primary beneficiary of a VIE is required to consolidate the VIE. The trust holding an 8% interest in JEC was a VIE until the expiration of a purchase option in July 2017 and then became a VIE again during 2019 until the 8% interest was purchased by Evergy Kansas Central in August 2019. The trust holding Evergy Kansas Central's 50% interest in La Cygne Unit 2 is a VIE and Evergy Kansas Central remains the primary beneficiary of the trust.

All involvement with entities by the Evergy Companies is assessed to determine whether such entities are VIEs and, if so, whether or not the Evergy Companies are the primary beneficiaries of the entities. The Evergy Companies also continuously assess whether they are the primary beneficiary of the VIE with which they are involved. Prospective changes in facts and circumstances may cause identification of the primary beneficiary to be reconsidered.

8% Interest in JEC

Under an agreement that expired in August 2019, Evergy Kansas Central leased an 8% interest in JEC from a trust. The trust was financed with an equity contribution from an owner participant and debt issued by the trust. The trust was created specifically to purchase the 8% interest in JEC and lease it to a third party and did not hold any other assets. Evergy Kansas Central met the requirements to be considered the primary beneficiary of the trust until July 2017, when a contractual option to purchase the 8% interest in the plant covered by the lease expired. Accordingly, Evergy Kansas Central deconsolidated the trust in 2017. Evergy Kansas Central then reconsolidated the trust as a VIE in the first quarter of 2019 following an agreement with the owner to purchase the 8% interest in JEC from the trust in August 2019. Evergy Kansas Central deconsolidated the trust for the final time following the closing of this purchase in August 2019.

50% Interest in La Cygne Unit 2

Under an agreement that expires in September 2029, Evergy Kansas Central entered into a sale-leaseback transaction with a trust under which the trust purchased Evergy Kansas Central's 50% interest in La Cygne Unit 2 and subsequently leased it back to Evergy Kansas Central. The trust was financed with an equity contribution from an owner participant and debt issued by the trust. The trust was created specifically to purchase the 50% interest in La Cygne Unit 2 and lease it back to Evergy Kansas Central and does not hold any other assets. Evergy Kansas Central meets the requirements to be considered the primary beneficiary of the trust. In determining the primary beneficiary of the trust, Evergy Kansas Central concluded that the activities of the trust that most significantly impact its economic performance and that Evergy Kansas Central has the power to direct include (1) the operation

and maintenance of the 50% interest in La Cygne Unit 2 and (2) Evergy Kansas Central's ability to exercise a purchase option at the end of the agreement at the lesser of fair value or a fixed amount. Evergy Kansas Central has the potential to receive benefits from the trust that could potentially be significant if the fair value of the 50% interest in La Cygne Unit 2 at the end of the agreement is greater than the fixed amount.

The following table summarizes the assets and liabilities related to the VIE described above that are recorded on Evergy's and Evergy Kansas Central's consolidated balance sheets.


	December 31
	2021		2020
Assets:	(millions)
Property, plant and equipment of variable interest entities, net	$	147.8	$	154.9
Liabilities:
Current maturities of long-term debt of variable interest entities	$	—	$	18.8
Accrued interest(a)	—		0.1

(a)Included in accrued interest on Evergy's and Evergy Kansas Central's consolidated balance sheets.

All of the liabilities noted in the table above relate to the purchase of the property, plant and equipment of the VIE. The assets of the VIE can be used only to settle obligations of the VIE and the VIE's debt holders have no recourse to the general credit of Evergy and Evergy Kansas Central. Evergy and Evergy Kansas Central have not provided financial or other support to the VIE and are not required to provide such support. Evergy and Evergy Kansas Central did not record any gain or loss upon the initial consolidation of the VIE.

TAXES

12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

TAXES

Components of income tax expense are detailed in the following tables.


Evergy	2021		2020		2019
Current income taxes	(millions)
Federal	$	15.6	$	(26.8)	$	(39.5)
State	(0.4)		2.1		15.0
Total	15.2		(24.7)		(24.5)
Deferred income taxes
Federal	92.8		73.1		93.2
State	14.7		59.8		27.5
Total	107.5		132.9		120.7





Investment tax credit
Deferral	0.4		—		5.2
Amortization	(5.7)		(6.0)		(4.4)
Total	(5.3)		(6.0)		0.8
Income tax expense	$	117.4	$	102.2	$	97.0


Evergy Kansas Central	2021		2020		2019
Current income taxes	(millions)
Federal	$	53.3	$	14.5	$	37.9
State	(0.2)		(5.3)		2.6
Total	53.1		9.2		40.5
Deferred income taxes
Federal	3.8		(16.7)		(8.9)
State	(1.2)		168.1		18.4
Total	2.6		151.4		9.5




Investment tax credit
Deferral	0.3		—		5.2
Amortization	(4.3)		(4.8)		(3.1)
Total	(4.0)		(4.8)		2.1
Income tax expense	$	51.7	$	155.8	$	52.1


Evergy Metro	2021		2020		2019
Current income taxes	(millions)
Federal	$	39.2	$	(0.2)	$	43.9
State	3.2		10.8		22.4
Total	42.4		10.6		66.3
Deferred income taxes
Federal	6.5		29.8		(24.5)
State	4.8		(32.2)		(5.0)
Total	11.3		(2.4)		(29.5)




Investment tax credit

Amortization	(1.3)		(1.1)		(1.1)
Total	(1.3)		(1.1)		(1.1)
Income tax expense	$	52.4	$	7.1	$	35.7

Effective Income Tax Rates

Effective income tax rates reflected in the financial statements and the reasons for their differences from the statutory federal rates are detailed in the following tables.


Evergy	2021		2020		2019
Federal statutory income tax	21.0	%	21.0	%	21.0	%
COLI policies	(1.0)		(1.6)		(1.8)
State income taxes	1.0		4.3		5.0
Flow through depreciation for plant-related differences	(5.4)		(5.3)		(4.5)
Federal tax credits	(2.8)		(4.6)		(4.9)
Non-controlling interest	(0.3)		(0.3)		(0.4)
AFUDC equity	(0.6)		(0.5)		(0.1)
Amortization of federal investment tax credits	(0.4)		(0.6)		(0.5)
Changes in uncertain tax positions, net	—		—		(0.2)
Federal or state tax rate change	—		1.9		—
Valuation allowance	—		(0.2)		(1.0)
Stock compensation	—		(0.1)		0.1
Officer compensation limitation	0.5		0.2		0.1
Other	(0.4)		(0.2)		(0.4)
Effective income tax rate	11.6	%	14.0	%	12.4	%


Evergy Kansas Central	2021		2020		2019
Federal statutory income tax	21.0	%	21.0	%	21.0	%
COLI policies	(1.7)		(2.8)		(3.3)
State income taxes	(0.4)		3.8		5.3
Flow through depreciation for plant-related differences	(3.0)		(0.1)		(0.1)
Federal tax credits	(5.0)		(7.1)		(7.4)
Non-controlling interest	(0.5)		(0.6)		(0.8)
AFUDC equity	(0.6)		(0.5)		(0.1)
Amortization of federal investment tax credits	(0.5)		(0.7)		(0.7)
Changes in uncertain tax positions, net	—		—		(0.4)
Federal or state tax rate change	—		27.8		—
Valuation allowance	—		—		(0.4)
Stock compensation	(0.1)		(0.1)		(0.1)
Officer compensation limitation	0.3		—		—
Other	(0.1)		(0.9)		(0.3)
Effective income tax rate	9.4	%	39.8	%	12.7	%


Evergy Metro	2021		2020		2019
Federal statutory income tax	21.0	%	21.0	%	21.0	%
COLI policies	(0.2)		(0.3)		(0.2)
State income taxes	1.7		4.9		4.7
Flow through depreciation for plant-related differences	(7.8)		(10.0)		(9.4)
Federal tax credits	(0.2)		(1.9)		(2.5)
AFUDC equity	(0.7)		(0.5)		(0.2)
Amortization of federal investment tax credits	(0.4)		(0.4)		(0.4)

Federal or state tax rate change	—		(10.5)		—

Stock compensation	—		(0.4)		—
Officer compensation limitation	0.9		0.4		0.3
Other	0.1		—		(1.0)
Effective income tax rate	14.4	%	2.3	%	12.3	%

Deferred Income Taxes

The tax effects of major temporary differences resulting in deferred income tax assets (liabilities) in the consolidated balance sheets is in the following table.


	December 31
	2021						2020
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Deferred tax assets:	(millions)
Tax credit carryforward	$	375.2	$	206.3	$	162.1	$	379.6	$	176.5	$	195.9
Income taxes refundable to customers, net	336.6		168.5		123.8		418.2		237.5		132.8
Deferred employee benefit costs	158.3		84.8		86.8		227.6		105.4		117.9
Net operating loss carryforward	40.2		—		—		51.0		—		0.2
Deferred state income taxes	146.9		101.0		38.6		145.9		101.7		37.8

Accrued liabilities	157.6		71.3		56.4		152.7		61.8		61.0
Other	200.0		100.6		59.6		181.0		91.4		44.8
Total deferred tax assets before valuation allowance	1,414.8		732.5		527.3		1,556.0		774.3		590.4
Valuation allowances	(12.8)		—		—		(14.4)		—		—
Total deferred tax assets, net	1,402.0		732.5		527.3		1,541.6		774.3		590.4
Deferred tax liabilities:
Plant-related	(2,701.1)		(1,308.7)		(996.7)		(2,693.7)		(1,341.2)		(972.1)
Deferred employee benefit costs	(96.8)		(52.9)		(43.5)		(171.4)		(75.6)		(76.3)
ARO regulatory assets	(133.7)		(53.9)		(49.9)		(136.7)		(49.9)		(54.3)
Acquisition premium	(43.9)		(43.9)		—		(46.9)		(46.9)		—
Other regulatory assets	(152.1)		(53.3)		(20.4)		(28.8)		(2.8)		(16.4)
Other	(136.3)		(87.7)		(22.9)		(128.9)		(82.4)		(30.1)
Total deferred tax liabilities	(3,263.9)		(1,600.4)		(1,133.4)		(3,206.4)		(1,598.8)		(1,149.2)
Net deferred income tax liabilities	$	(1,861.9)	$	(867.9)	$	(606.1)	$	(1,664.8)	$	(824.5)	$	(558.8)

Tax Credit Carryforwards

At December 31, 2021 and 2020, Evergy had $373.6 million and $379.6 million, respectively, of federal general business income tax credit carryforwards. At December 31, 2021 and 2020, Evergy Kansas Central had $204.7 million and $176.5 million, respectively, of federal general business income tax credit carryforwards. At December 31, 2021 and 2020, Evergy Metro had $162.1 million and $195.9 million, respectively, of federal general business income tax credit carryforwards. The carryforwards for Evergy, Evergy Kansas Central and Evergy Metro relate primarily to wind production tax credits and advanced coal investment tax credits and expire in the years 2022 to 2041. Approximately $0.1 million of Evergy's credits are related to Low Income Housing credits that were acquired in Great Plains Energy's acquisition of Evergy Missouri West. Due to federal limitations on the utilization of income tax attributes acquired in the Evergy Missouri West acquisition, Evergy expects a portion of these credits to expire unutilized and has provided a valuation allowance against $0.1 million of the federal income tax benefit.

The year of origin of Evergy's, Evergy Kansas Central's and Evergy Metro's related tax benefit amounts for federal tax credit carryforwards as of December 31, 2021 are detailed in the following table.


	Amount of Benefit
Year of Origin	Evergy		Evergy Kansas Central		Evergy Metro
	(millions)


2004	0.1		—		—
2005	0.1		—		—
2006	0.1		—		—
2007	0.1		—		—
2009	38.2		0.2		37.9
2010	18.3		—		18.2
2011	13.3		—		13.2
2012	12.8		2.0		10.7
2013	24.3		11.3		12.9
2014	24.1		10.7		13.0
2015	24.7		10.9		13.2
2016	27.1		11.0		12.4
2017	43.9		35.1		8.2
2018	43.9		36.3		7.5
2019	37.7		30.9		6.7
2020	35.9		28.3		7.4
2021	29.0		28.0		0.8
	$	373.6	$	204.7	$	162.1

Net Operating Loss Carryforwards

At December 31, 2021 and 2020, Evergy had $33.6 million and $42.2 million, respectively, of tax benefits related to federal net operating loss (NOL) carryforwards. Approximately $7.1 million of Evergy's tax benefits at December 31, 2021 are related to NOLs that were acquired in the Evergy Missouri West acquisition. Due to federal limitations on the utilization of income tax attributes acquired in the Evergy Missouri West acquisition, Evergy expects a portion of these federal NOL carryforwards to expire unutilized and has provided a valuation allowance against $7.1 million of the federal income tax benefit. The federal NOL carryforwards expire in years 2023 to 2024.

The year of origin of Evergy's related tax benefit amounts for federal NOL carryforwards as of December 31, 2021 are detailed in the following table.


Year of Origin	Amount of Benefit
	(millions)




2005	$	1.9
2006	31.7
	$	33.6

In addition, Evergy also had deferred tax benefits of $6.6 million and $8.8 million related to state NOLs as of December 31, 2021 and 2020, respectively. Evergy Metro had deferred tax benefits of $0.2 million related to state NOLs as of 2020. The state NOL carryforwards expire in years 2022 to 2038. Evergy does not expect to utilize $5.6 million of NOLs before the expiration date of the carryforwards of NOLs in certain states. Therefore, a valuation allowance has been provided against $5.6 million of state tax benefits.

Alternative Minimum Tax (AMT) Carryforwards

At December 31, 2021, Evergy and Evergy Kansas Central had $1.6 million of federal AMT carryforwards.

Valuation Allowances

Evergy is required to assess the ultimate realization of deferred tax assets using a "more likely than not" assessment threshold. This assessment takes into consideration tax planning strategies within Evergy's control. As a result of this assessment, Evergy has established a partial valuation allowance for federal and state tax NOL carryforwards and tax credit carryforwards. During 2021, $1.5 million of tax benefit was recorded in continuing operations primarily related to utilization or expiration of certain state NOL carryforwards.

Uncertain Tax Positions

Evergy is considered open to U.S. federal examination for years after 2009 due to the carryforward of net operating losses and general business income tax credits. With few exceptions, Evergy is no longer subject to state and local tax examinations by tax authorities for years before 2016. As of December 31, 2021, Evergy does not have any significant income tax issues under examination.

Kansas Tax Reform

In May 2020, the state of Kansas exempted certain public utilities, including Evergy Kansas Central and Evergy Metro, from Kansas corporate income tax beginning in 2021 and authorized the KCC to approve changes in rates related to increases or decreases in federal or state income tax rates.

As a result of the exemption from Kansas corporate income tax, the Evergy Companies revalued their deferred income tax assets and liabilities in May 2020. Evergy decreased its net deferred income tax liabilities by $233.8 million, primarily consisting of a $400.4 million adjustment for the revaluation of deferred income tax assets and liabilities included in rate base and a $31.7 million tax gross-up adjustment on this amount for ratemaking purposes and $13.8 million of income tax expense primarily related to the revaluation of deferred income taxes that will not be recovered from customers in future rates; partially offset by a decrease to unamortized investment tax credits of $183.6 million due to the revaluation of certain Kansas income tax credits and a $16.9 million tax gross-up adjustment on this amount for ratemaking purposes.

Evergy Kansas Central decreased its net deferred income tax liabilities by $17.6 million, primarily consisting of a $293.7 million adjustment for the revaluation of deferred income tax assets and liabilities included in rate base and a $17.3 million tax gross-up adjustment on this amount for ratemaking purposes; partially offset by a decrease to unamortized investment tax credits of $183.6 million due to the revaluation of certain Kansas income tax credits and a $16.9 million tax gross-up adjustment on this amount for ratemaking purposes and $109.0 million of income tax expense primarily related to the revaluation of deferred income taxes that will not be recovered from customers in future rates.

Evergy Metro decreased its net deferred income tax liabilities by $152.9 million, primarily consisting of a $106.7 million adjustment for the revaluation of deferred income tax assets and liabilities included in rate base and a $14.4 million tax gross-up adjustment on this amount for ratemaking purposes and $32.2 million of income tax benefit primarily related to the revaluation of deferred income taxes that will not be refunded to customers in future rates.

The changes to the Evergy Companies' net deferred income tax liabilities included in rate base were offset by corresponding changes in regulatory liabilities. The net regulatory liabilities will be refunded to customers in future rates by amortizing the amounts related to plant assets over the remaining useful life of the assets, and amortizing the amounts related to other items over a period to be determined in a future rate case. The changes to the Evergy Companies' unamortized investment tax credits were related to the portion of certain Kansas income tax credits that are not expected to be used after December 31, 2020. The amounts of income tax expense (benefit) recognized by the Evergy Companies related to the revaluation of deferred income taxes that will not be recovered from or refunded to customers in future rates primarily pertain to deferred tax adjustments related to the difference between Evergy's consolidated tax rate and the statutory tax rates used for setting rates at Evergy Kansas Central, Evergy Metro and Evergy Missouri West as well as deferred income tax adjustments related to non-regulated operations.

Prior to 2021, Evergy Kansas Central and Evergy Metro recovered the cost of Kansas corporate income taxes in rates from their customers at the statutory rate of 7%. In accordance with the provisions of the income tax exemption, Evergy Metro and Evergy Kansas Central filed a joint application with the KCC in July 2020 to reduce their retail rates to reflect their exemption from Kansas corporate income taxes beginning in 2021. In the joint application, Evergy Metro requested to implement its rate reduction in one phase, effective January 1, 2021, and Evergy Kansas Central requested to implement its rate reduction in three phases, effective January 1 in each of 2021, 2022 and 2023. In November 2020, the KCC approved Evergy Kansas Central's and Evergy Metro's joint application.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 21
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32857-109319

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330215-122817

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 17
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32809-109319

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.5.Q1)
-URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32705-109319

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 270
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6424409&loc=d3e44925-109338

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-URI http://asc.fasb.org/topic&trid=2144680

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

+ Details

LEASES

12 Months Ended

Dec. 31, 2021

Leases [Abstract]

LEASES

The Evergy Companies lease office buildings, computer equipment, vehicles, rail cars, generating plant and other property and equipment, including rail cars to serve jointly-owned generating units where Evergy Kansas Central or Evergy Metro is the managing partner and is reimbursed by other joint-owners for the other owners' proportionate share of the costs. Under GAAP, a contract is or contains a lease if the contract conveys the right to control the use of identified property, plant or equipment for a period of time in exchange for consideration. The Evergy Companies assess a contract as being or containing a lease if the contract identifies property, plant and equipment, provides the lessee the right to obtain substantially all of the economic benefits from use of the property, plant and equipment and provides the lessee the right to direct the use of the property, plant and equipment.

The Evergy Companies have entered into several agreements to purchase energy through renewable purchase power agreements that are accounted for as leases that commenced prior to the application of Topic 842-Leases. Due to the intermittent nature of renewable generation, these leases have significant variable lease payments not included in the initial and subsequent measurement of the lease liability. Variable lease payments are expensed as incurred. In addition, certain other contracts contain payment for activity that transfers a separate good or service such as utilities or common area maintenance. The Evergy Companies have elected a practical expedient permitted by GAAP to not separate such components of the lease from other lease components for all leases.

The Evergy, Evergy Kansas Central and Evergy Metro leases have remaining terms ranging from 1 to 17 years, 1 to 17 years and 1 to 11 years, respectively. Leases that have original lease terms of twelve months or less are not recognized on the Evergy Companies’ balance sheets. Some leases have options to renew the lease or terminate early at the election of the Evergy Companies. Judgment is applied at lease commencement to determine the reasonably certain lease term based on then-current assumptions about use of the leased asset, market conditions and terms in the contract. The judgment applied to determine the lease term can significantly impact the measurement of the lease liability and right-of-use asset and lease classification.

The Evergy Companies typically discount lease payments over the term of the lease using their incremental borrowing rates at lease commencement to measure its initial and subsequent lease liability. For leases that existed at the initial application of Topic 842, the Evergy Companies used the incremental borrowing rates that corresponded to the remaining lease term as of January 1, 2019.

Leases may be classified as either operating leases or finance leases. The lease classification is based on assumptions of the lease term and discount rate, as discussed above, and the fair market value and economic life of the leased asset. Operating leases recognize a consistent expense each period over the lease term, while finance leases will result in the separate presentation of interest expense on the lease liability and amortization of the right-of-use asset. Finance leases are treated as operating leases for rate-making purposes and as such, the Evergy Companies defer to a regulatory asset or liability any material differences between expense recognition and the timing of payments in order to match what is being recovered in customer rates.

The Evergy Companies’ lease expense is detailed in the following table.


Evergy	2021		2020		2019
Finance lease costs	(millions)
Amortization of right-of-use assets	$	5.1	$	7.7	$	5.2
Interest on lease liabilities	2.5		3.1		2.9
Operating lease costs	21.8		22.9		23.8
Short-term lease costs	5.9		2.1		4.0
Variable lease costs for renewable purchase power agreements	280.3		296.6		313.0
Total lease costs	$	315.6	$	332.4	$	348.9


Evergy Kansas Central	2021		2020		2019
Finance lease costs	(millions)
Amortization of right-of-use assets	$	4.5	$	7.2	$	5.0
Interest on lease liabilities	2.4		2.8		2.7
Operating lease costs	12.9		11.9		13.2
Short-term lease costs	1.8		0.5		1.2
Variable lease costs for renewable purchase power agreements	145.8		135.6		130.8
Total lease costs	$	167.4	$	158.0	$	152.9


Evergy Metro	2021		2020		2019
Finance lease costs	(millions)
Amortization of right-of-use assets	$	0.4	$	0.3	$	0.1
Interest on lease liabilities	0.1		0.1		0.1
Operating lease costs	9.0		9.3		9.2
Short-term lease costs	3.0		1.5		2.6
Variable lease costs for renewable purchase power agreements	101.0		112.2		129.2
Total lease costs	$	113.5	$	123.4	$	141.2

Supplemental cash flow information related to the Evergy Companies' leases is detailed in the following table.


Evergy	2021		2020		2019
Cash paid for amounts included in the measurement of lease liabilities:	(millions)
Operating cash flows from operating leases	$	20.7	$	22.2	$	21.7
Operating cash flows from finance leases	2.6		2.8		2.8
Financing cash flows from finance leases	5.3		5.6		5.0
Right-of-use assets obtained in exchange for new operating lease liabilities	16.4		6.9		10.4
Right-of-use assets obtained in exchange for new finance lease liabilities	1.4		5.6		8.3


Evergy Kansas Central	2021		2020		2019
Cash paid for amounts included in the measurement of lease liabilities:	(millions)
Operating cash flows from operating leases	$	11.8	$	12.9	$	13.7
Operating cash flows from finance leases	2.4		2.5		2.6
Financing cash flows from finance leases	4.7		5.1		4.8
Right-of-use assets obtained in exchange for new operating lease liabilities	7.1		6.6		6.1
Right-of-use assets obtained in exchange for new finance lease liabilities	1.4		4.0		8.3


Evergy Metro	2021		2020		2019
Cash paid for amounts included in the measurement of lease liabilities:	(millions)
Operating cash flows from operating leases	$	10.4	$	10.8	$	9.9
Operating cash flows from finance leases	0.1		0.1		0.1
Financing cash flows from finance leases	0.5		0.4		0.1
Right-of-use assets obtained in exchange for new operating lease liabilities	9.3		0.3		2.4
Right-of-use assets obtained in exchange for new finance lease liabilities	—		1.6		—

Finance Leases

Right-of-use assets for finance leases are included in property, plant and equipment on the Evergy Companies’ balance sheets. Lease liabilities for finance leases are included in other current and other long-term liabilities. Payments and other supplemental information for finance leases as of December 31, 2021, are detailed in the following table.


	Evergy			Evergy Kansas Central			Evergy Metro
	(millions)
2022	$	7.8		$	7.1		$	0.6
2023	6.7			5.9			0.6
2024	5.5			4.7			0.6
2025	4.7			4.2			0.3
2026	4.4			3.9			0.2
After 2026	38.5			37.8			0.3
Total finance lease payments	67.6			63.6			2.6
Amounts representing imputed interest	(21.3)			(20.6)			(0.4)
Present value of lease payments	46.3			43.0			2.2
Less: current portion	(5.4)			(4.9)			(0.5)
Total long-term obligations under finance leases	$	40.9		$	38.1		$	1.7

Right-of-use assets under finance leases included in property, plant and equipment, net on the consolidated balance sheets	$	310.3		$	50.6		$	2.2

Weighted-average remaining lease term (years)	13.3			13.9			5.0
Weighted-average discount rate	5.6		%	5.6		%	5.1		%

Operating Leases

Right-of-use assets for operating leases are included in other long-term assets on the Evergy Companies’ balance sheets. Lease liabilities for operating leases are included in other current and other long-term liabilities. Lease payments and other supplemental information for operating leases as of December 31, 2021, are detailed in the following table.


	Evergy			Evergy Kansas Central			Evergy Metro
	(millions)
2022	$	18.8		$	9.4		$	9.2
2023	15.3			6.5			8.6
2024	12.5			4.3			7.9
2025	8.5			2.2			6.4
2026	5.9			0.7			5.4
After 2026	30.3			0.1			30.3
Total operating lease payments	91.3			23.2			67.8
Amounts representing imputed interest	(7.3)			(1.0)			(6.3)
Present value of lease payments	84.0			22.2			61.5
Less: current portion	(17.1)			(9.0)			(8.0)
Total long-term obligations under operating leases	$	66.9		$	13.2		$	53.5

Right-of-use assets under operating leases included in other assets on the consolidated balance sheets	$	90.7		$	29.0		$	46.7

Weighted-average remaining lease term (years)	7.6			3.0			9.3
Weighted-average discount rate	2.2		%	2.4		%	2.1		%

LEASES

The Evergy Companies’ lease expense is detailed in the following table.


Evergy	2021		2020		2019
Finance lease costs	(millions)
Amortization of right-of-use assets	$	5.1	$	7.7	$	5.2
Interest on lease liabilities	2.5		3.1		2.9
Operating lease costs	21.8		22.9		23.8
Short-term lease costs	5.9		2.1		4.0
Variable lease costs for renewable purchase power agreements	280.3		296.6		313.0
Total lease costs	$	315.6	$	332.4	$	348.9


Evergy Kansas Central	2021		2020		2019
Finance lease costs	(millions)
Amortization of right-of-use assets	$	4.5	$	7.2	$	5.0
Interest on lease liabilities	2.4		2.8		2.7
Operating lease costs	12.9		11.9		13.2
Short-term lease costs	1.8		0.5		1.2
Variable lease costs for renewable purchase power agreements	145.8		135.6		130.8
Total lease costs	$	167.4	$	158.0	$	152.9


Evergy Metro	2021		2020		2019
Finance lease costs	(millions)
Amortization of right-of-use assets	$	0.4	$	0.3	$	0.1
Interest on lease liabilities	0.1		0.1		0.1
Operating lease costs	9.0		9.3		9.2
Short-term lease costs	3.0		1.5		2.6
Variable lease costs for renewable purchase power agreements	101.0		112.2		129.2
Total lease costs	$	113.5	$	123.4	$	141.2

Supplemental cash flow information related to the Evergy Companies' leases is detailed in the following table.


Evergy	2021		2020		2019
Cash paid for amounts included in the measurement of lease liabilities:	(millions)
Operating cash flows from operating leases	$	20.7	$	22.2	$	21.7
Operating cash flows from finance leases	2.6		2.8		2.8
Financing cash flows from finance leases	5.3		5.6		5.0
Right-of-use assets obtained in exchange for new operating lease liabilities	16.4		6.9		10.4
Right-of-use assets obtained in exchange for new finance lease liabilities	1.4		5.6		8.3


Evergy Kansas Central	2021		2020		2019
Cash paid for amounts included in the measurement of lease liabilities:	(millions)
Operating cash flows from operating leases	$	11.8	$	12.9	$	13.7
Operating cash flows from finance leases	2.4		2.5		2.6
Financing cash flows from finance leases	4.7		5.1		4.8
Right-of-use assets obtained in exchange for new operating lease liabilities	7.1		6.6		6.1
Right-of-use assets obtained in exchange for new finance lease liabilities	1.4		4.0		8.3


Evergy Metro	2021		2020		2019
Cash paid for amounts included in the measurement of lease liabilities:	(millions)
Operating cash flows from operating leases	$	10.4	$	10.8	$	9.9
Operating cash flows from finance leases	0.1		0.1		0.1
Financing cash flows from finance leases	0.5		0.4		0.1
Right-of-use assets obtained in exchange for new operating lease liabilities	9.3		0.3		2.4
Right-of-use assets obtained in exchange for new finance lease liabilities	—		1.6		—

Finance Leases


	Evergy			Evergy Kansas Central			Evergy Metro
	(millions)
2022	$	7.8		$	7.1		$	0.6
2023	6.7			5.9			0.6
2024	5.5			4.7			0.6
2025	4.7			4.2			0.3
2026	4.4			3.9			0.2
After 2026	38.5			37.8			0.3
Total finance lease payments	67.6			63.6			2.6
Amounts representing imputed interest	(21.3)			(20.6)			(0.4)
Present value of lease payments	46.3			43.0			2.2
Less: current portion	(5.4)			(4.9)			(0.5)
Total long-term obligations under finance leases	$	40.9		$	38.1		$	1.7

Right-of-use assets under finance leases included in property, plant and equipment, net on the consolidated balance sheets	$	310.3		$	50.6		$	2.2

Weighted-average remaining lease term (years)	13.3			13.9			5.0
Weighted-average discount rate	5.6		%	5.6		%	5.1		%

Operating Leases


	Evergy			Evergy Kansas Central			Evergy Metro
	(millions)
2022	$	18.8		$	9.4		$	9.2
2023	15.3			6.5			8.6
2024	12.5			4.3			7.9
2025	8.5			2.2			6.4
2026	5.9			0.7			5.4
After 2026	30.3			0.1			30.3
Total operating lease payments	91.3			23.2			67.8
Amounts representing imputed interest	(7.3)			(1.0)			(6.3)
Present value of lease payments	84.0			22.2			61.5
Less: current portion	(17.1)			(9.0)			(8.0)
Total long-term obligations under operating leases	$	66.9		$	13.2		$	53.5

Right-of-use assets under operating leases included in other assets on the consolidated balance sheets	$	90.7		$	29.0		$	46.7

Weighted-average remaining lease term (years)	7.6			3.0			9.3
Weighted-average discount rate	2.2		%	2.4		%	2.1		%

Schedule I Financial Statements of Parent Company

12 Months Ended

Dec. 31, 2021

Condensed Financial Information Disclosure [Abstract]

Condensed Financial Information of Parent Company Only Disclosure


EVERGY, INC.
Statements of Comprehensive Income of Parent Company

	2021		2020		2019
OPERATING EXPENSES:	(millions)
Operating and maintenance	$	13.2	$	39.3	$	19.4

Total Operating Expenses	13.2		39.3		19.4
INCOME FROM OPERATIONS	(13.2)		(39.3)		(19.4)
OTHER INCOME (EXPENSE)
Equity in earnings from subsidiaries	932.9		683.4		698.2
Investment earnings	19.2		32.1		32.7

Other expense	(8.3)		(0.1)		(0.1)
Total Other Income, Net	943.8		715.4		730.8
Interest expense	74.3		86.3		60.7
INCOME BEFORE INCOME TAXES	856.3		589.8		650.7
Income tax benefit	(16.5)		(22.7)		(13.7)

NET INCOME	$	872.8	$	612.5	$	664.4
COMPREHENSIVE INCOME
NET INCOME	$	872.8	$	612.5	$	664.4
OTHER COMPREHENSIVE INCOME
Derivative hedging activity
Loss on derivative hedging instruments	—		—		(64.4)
Income tax benefit	—		—		16.5
Net loss on derivative hedging instruments	—		—		(47.9)
Reclassification to expenses, net of taxes	5.5		3.0		1.5
Derivative hedging activity, net of tax	5.5		3.0		(46.4)
Other comprehensive loss from subsidiaries, net	(0.1)		(2.4)		(0.6)
Total other comprehensive income (loss)	5.4		0.6		(47.0)
COMPREHENSIVE INCOME	$	878.2	$	613.1	$	617.4

The accompanying Notes to Financial Statements of Parent Company are an integral part of these statements.


EVERGY, INC.
Balance Sheets of Parent Company
	December 31
	2021		2020
ASSETS	(millions, except share amounts)
CURRENT ASSETS:
Cash and cash equivalents	$	7.5		$	11.0
Accounts receivable from subsidiaries	72.2			54.1
Notes receivable from subsidiaries	289.5			349.4
Income taxes receivable	14.8			7.4
Prepaid expenses and other assets	2.0			1.9
Total Current Assets	386.0			423.8
OTHER ASSETS:
Investment in subsidiaries	10,992.1			10,349.2
Note receivable from subsidiaries	—			287.5
Deferred income taxes	19.0			20.5
Other	1.2			0.5
Total Other Assets	11,012.3			10,657.7
TOTAL ASSETS	$	11,398.3		$	11,081.5
LIABILITIES AND EQUITY
CURRENT LIABILITIES:
Current maturities of long-term debt	$	287.5		$	350.0
Notes payable and commercial paper	358.0			200.0
Accounts payable to subsidiaries	22.3			18.4
Accrued interest	12.4			13.9
Other	8.1			11.0
Total Current Liabilities	688.3			593.3
LONG-TERM LIABILITIES:
Long-term debt, net	1,590.1			1,875.7
Other	14.9			11.7
Total Long-Term Liabilities	1,605.0			1,887.4
Commitments and Contingencies (Note 14)
EQUITY:
Evergy, Inc. Shareholders' Equity:
Common stock - 600,000,000 shares authorized, without par value, 229,299,900 and 226,836,670 shares issued	7,188.7			7,063.2
Retained earnings	1,960.3			1,587.0
Accumulated other comprehensive loss	(44.0)			(49.4)
Total Shareholders' Equity	9,105.0			8,600.8
TOTAL LIABILITIES AND EQUITY	$	11,398.3		11,081.5

The accompanying Notes to Financial Statements of Parent Company are an integral part of these statements.


EVERGY, INC.
Statements of Cash Flows of Parent Company

	2021		2020		2019
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:	(millions)
Net income	$	872.8	$	612.5	$	664.4
Adjustments to reconcile income to net cash from operating activities:






Non-cash compensation	15.6		16.0		16.3
Net deferred income taxes and credits	—		9.6		21.4


Equity in earnings from subsidiaries	(932.9)		(683.4)		(698.2)
Other	7.0		7.0		2.1
Changes in working capital items:
Accounts receivable from subsidiaries	(18.2)		(30.0)		8.9

Income taxes receivable	(7.5)		0.6		(7.8)
Prepaid expenses and other current assets	—		0.8		(0.1)
Accounts payable to subsidiaries	3.9		5.0		(15.0)

Accrued interest	(1.4)		(0.7)		12.5
Other current liabilities	(3.2)		2.9		1.7
Cash dividends from subsidiaries	290.0		355.0		460.0
Changes in other assets	0.1		0.3		0.2
Changes in other liabilities	4.8		(3.7)		(3.5)
Cash Flows from Operating Activities	231.0		291.9		462.9
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:

Repayment of intercompany note	347.4		—		—






Cash Flows from Investing Activities	347.4		—		—
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short term debt, net	157.1		180.0		20.0

Proceeds from long-term debt	—		—		1,585.0
Retirements of long-term debt	(350.0)		—		—
Payment for settlement of interest rate swap accounted for as a cash flow hedge	—		—		(69.8)





Cash dividends paid	(497.9)		(465.0)		(462.5)
Issuance of common stock	112.5		—		—
Repurchase of common stock	—		—		(1,628.7)
Other financing activities	(3.6)		(7.5)		(2.4)
Cash Flows used in Financing Activities	(581.9)		(292.5)		(558.4)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(3.5)		(0.6)		(95.5)
CASH AND CASH EQUIVALENTS:
Beginning of period	11.0		11.6		107.1
End of period	$	7.5	$	11.0	$	11.6

The accompanying Notes to Financial Statements of Parent Company are an integral part of these statements.

1. ORGANIZATION AND BASIS OF PRESENTATION

The Evergy, Inc. Parent Company Financial Statements have been prepared to comply with Rule 12-04 of Regulation S-X.

Evergy, Inc. was incorporated in 2017 as Monarch Energy, a wholly-owned subsidiary of Great Plains Energy. Prior to the closing of the merger transactions, Monarch Energy changed its name to Evergy, Inc. and did not conduct any business activities other than those required for its formation and matters contemplated by the Amended Merger Agreement. On June 4, 2018, in accordance with the Amended Merger Agreement, Great Plains Energy merged into Evergy, Inc., with Evergy, Inc. surviving the merger and King Energy merged into Evergy Kansas Central, with Evergy Kansas Central surviving the merger. These merger transactions resulted in Evergy, Inc. becoming the parent entity of Evergy Kansas Central and the direct subsidiaries of Great Plains Energy, including Evergy Metro and Evergy Missouri West.

Evergy, Inc. operates primarily through its wholly-owned direct subsidiaries. Evergy, Inc.'s investments in subsidiaries are accounted for using the equity method. Fair value adjustments and goodwill related to the acquired assets and liabilities of Great Plains Energy and its direct subsidiaries are only reflected on Evergy's consolidated financial statements and as such, are not included in Evergy, Inc.'s Parent Company Financial Statements. See Note 1 to the consolidated financial statement for additional information.

2. LONG-TERM DEBT

See Note 12 to the consolidated financial statements for additional information on Evergy, Inc.'s long-term debt.

3. GUARANTEES

See Note 15 to the consolidated financial statements for additional information regarding Evergy, Inc.'s guarantees.

4. DIVIDENDS

Cash dividends paid to Evergy, Inc. by its subsidiaries were $290.0 million for the year ended December 31, 2021, $355.0 million for the year ended December 31, 2020 and $460.0 million for the year ended December 31, 2019. See Note 17 to the consolidated financial statements for information regarding the dividend restrictions of Evergy, Inc. and its subsidiaries.

Schedule II Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2021

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

Schedule II Valuation and Qualifying Accounts


Evergy, Inc.
Valuation and Qualifying Accounts
Years Ended December 31, 2021, 2020 and 2019

				Additions
				Charged
	Balance At			To Costs			Charged								Balance
	Beginning			And			To Other								At End
Description	Of Period			Expenses			Accounts				Deductions				Of Period
Year Ended December 31, 2021	(millions)
Allowance for uncollectible accounts		$	19.3		$	28.0		$	12.0	(a)		$	26.4	(b)		$	32.9
Tax valuation allowance		14.4			—			—				1.6		(c)		12.8
Year Ended December 31, 2020
Allowance for uncollectible accounts		$	10.5		$	24.9		$	12.5	(a)		$	28.6	(b)		$	19.3
Tax valuation allowance		17.5			—			—				3.1		(c)		14.4
Year Ended December 31, 2019
Allowance for uncollectible accounts		$	9.2		$	27.2		$	12.4	(e)		$	38.3	(b)		$	10.5
Tax valuation allowance		27.3			0.6			—		(d)		10.4		(c)		17.5

(a) Recoveries.

(b) Uncollectible accounts charged off.


Evergy Kansas Central, Inc.
Valuation and Qualifying Accounts
Years Ended December 31, 2021, 2020 and 2019

				Additions
				Charged
	Balance At			To Costs			Charged								Balance
	Beginning			And			To Other								At End
Description	Of Period			Expenses			Accounts				Deductions				Of Period
Year Ended December 31, 2021	(millions)
Allowance for uncollectible accounts		$	7.5		$	12.0		$	4.5	(a)		$	11.0	(b)		$	13.0

Year Ended December 31, 2020
Allowance for uncollectible accounts		$	3.8		$	11.1		$	2.6	(a)		$	10.0	(b)		$	7.5
Year Ended December 31, 2019
Allowance for uncollectible accounts		$	3.9		$	7.2		$	3.4	(a)		$	10.7	(b)		$	3.8
Tax valuation allowance		1.7			—			—				1.7		(c)		—

(a) Recoveries.

(b) Uncollectible accounts charged off.


Evergy Metro, Inc.
Valuation and Qualifying Accounts
Years Ended December 31, 2021, 2020 and 2019

				Additions
				Charged
	Balance At			To Costs			Charged								Balance
	Beginning			And			To Other								At End
Description	Of Period			Expenses			Accounts				Deductions				Of Period
Year Ended December 31, 2021	(millions)
Allowance for uncollectible accounts		$	8.1		$	10.5		$	5.3	(a)		$	10.6	(b)		$	13.3
Year Ended December 31, 2020
Allowance for uncollectible accounts		$	4.6		$	9.0		$	6.9	(a)		$	12.4	(b)		$	8.1

Year Ended December 31, 2019
Allowance for uncollectible accounts		$	3.8		$	13.7		$	6.3	(a)		$	19.2	(b)		$	4.6

(a) Recoveries.

(b) Uncollectible accounts charged off.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	Dec. 31, 2021
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation Each of Evergy's, Evergy Kansas Central's and Evergy Metro's consolidated financial statements includes the accounts of their subsidiaries and variable interest entities (VIEs) of which they are the primary beneficiary. Undivided interests in jointly-owned generation facilities are included on a proportionate basis. Intercompany transactions have been eliminated. The Evergy Companies assess financial performance and allocate resources on a consolidated basis (i.e., operate in one segment). Evergy Metro elected not to apply "push-down accounting" related to the Great Plains Energy Incorporated (Great Plains Energy) and Evergy Kansas Central merger in 2018, whereby the adjustments of assets and liabilities to fair value and the resulting goodwill would be recorded on the financial statements of the acquired subsidiary. These adjustments for Evergy Metro, as well as those related to the acquired assets and liabilities of Great Plains Energy and its other direct subsidiaries, are only reflected on Evergy's consolidated financial statements.
Use of Estimates	Use of Estimates The process of preparing financial statements in conformity with generally accepted accounting principles (GAAP) requires the use of estimates and assumptions that affect the reported amounts of certain types of assets, liabilities, revenues and expenses. Such estimates primarily relate to unsettled transactions and events as of the date of the financial statements. Accordingly, upon settlement, actual results may differ from estimated amounts.
Cash and Cash Equivalents	Cash and Cash EquivalentsCash equivalents consist of highly liquid investments with original maturities of three months or less at acquisition.
Fuel Inventory and Supplies	Fuel Inventory and SuppliesThe Evergy Companies record fuel inventory and supplies at average cost.
Property, Plant and Equipment	Property, Plant and Equipment The Evergy Companies record the value of property, plant and equipment, including that of VIEs, at cost. For plant, cost includes contracted services, direct labor and materials, indirect charges for engineering and supervision and an allowance for funds used during construction (AFUDC). AFUDC represents the allowed cost of capital used to finance utility construction activity. AFUDC equity funds are included as a non-cash item in other income and AFUDC borrowed funds are a reduction of interest expense. AFUDC is computed by applying a composite rate to qualified construction work in progress. The rates used to compute gross AFUDC are compounded semi-annually. When property units are retired or otherwise disposed, the original cost, net of salvage, is charged to accumulated depreciation. Repair of property and replacement of items not considered to be units of property are expensed as incurred, except for planned refueling and maintenance outages at Wolf Creek Generating Station (Wolf Creek). As authorized by regulators, the incremental maintenance cost incurred for such outages is deferred and amortized to expense ratably over the period between planned outages.
Depreciation and Amortization	Depreciation and AmortizationDepreciation and amortization of utility plant other than nuclear fuel is computed using the straight-line method over the estimated lives of depreciable property based on rates approved by state regulatory authorities. Annual depreciation rates average approximately 3%. See Note 7 for more details. Nuclear fuel is amortized to fuel expense based on the quantity of heat produced during the generation of electricity.
Plant to be Retired, Net	Plant to be Retired, Net When the Evergy Companies retire utility plant, the original cost, net of salvage, is charged to accumulated depreciation. However, when it becomes probable an asset will be retired significantly in advance of its original expected useful life and in the near term, the cost of the asset and related accumulated depreciation is recognized as a separate asset and a probable abandonment. If the asset is still in service, the net amount is classified as plant to be retired, net on the consolidated balance sheets. If the asset is no longer in service, the net amount is classified as a regulatory asset on the consolidated balance sheets. The Evergy Companies must also assess the probability of full recovery of the remaining net book value of the abandonment. The net book value that may be retained as an asset on the balance sheet for the abandonment is dependent upon amounts that may be recovered through regulated rates, including any return. An impairment charge, if any, would equal the difference between the remaining net book value of the asset and the present value of the future revenues expected from the asset. Evergy Missouri West has determined that its November 2018 retirement of Sibley No. 3 Unit meets the criteria to be considered an abandonment. As of December 31, 2021, Evergy has classified the remaining Sibley No. 3 Unit net book value of $123.4 million as retired generation facilities within regulatory assets on its consolidated balance sheet. This regulatory asset is reduced by approximately $9 million of annual amortization expense, which is an amount equal to the annual depreciation expense for the asset reflected in retail rates. In October 2019, the Missouri Public Service Commission (MPSC) granted the request of certain intervenors for an Accounting Authority Order (AAO) that requires Evergy Missouri West to record a regulatory liability for all revenues collected from customers for return on investment, non-fuel operations and maintenance costs, taxes including accumulated deferred income taxes and all other costs associated with Sibley Station following the station's retirement in November 2018 for consideration in Evergy Missouri West's current rate case, which was filed in January 2022. See Note 4 for additional information regarding the AAO and Evergy Missouri West's current rate case. Evergy Missouri West expects that the MPSC's decision in its current rate case regarding the AAO could impact the valuation of its regulatory asset for retired generation facilities but as of December 31, 2021, has concluded that no impairment is required based on the relevant facts and circumstances.
Nuclear Plant Decommissioning Costs	Nuclear Plant Decommissioning Costs Nuclear plant decommissioning cost estimates are based on either the immediate dismantlement method or the deferred dismantling method as determined by the State Corporation Commission of the State of Kansas (KCC) and MPSC and include the costs of decontamination, dismantlement and site restoration. Based on these cost estimates, Evergy Kansas Central and Evergy Metro each contribute to a tax-qualified trust fund to be used to decommission Wolf Creek. Related liabilities for decommissioning are included on Evergy's, Evergy Kansas Central's and Evergy Metro's consolidated balance sheets in asset retirement obligations (AROs). As a result of the authorized regulatory treatment and related regulatory accounting, differences between the fair value of the assets held in the nuclear decommissioning trust and the amounts recorded for the accumulated accretion and depreciation expense associated with the decommissioning ARO are recorded as a regulatory liability on Evergy's, Evergy Kansas Central's and Evergy Metro's consolidated balance sheets.
Regulatory Accounting	Regulatory AccountingAccounting standards are applied that recognize the economic effects of rate regulation. Accordingly, regulatory assets and liabilities have been recorded when required by a regulatory order or based on regulatory precedent.
Cash Surrender Value of Life Insurance	Cash Surrender Value of Life Insurance Amounts related to corporate-owned life insurance (COLI) are recorded on the consolidated balance sheets in other long-term assets and are detailed in the following table for Evergy. Substantially all of Evergy's COLI-related balances relate to Evergy Kansas Central's COLI activity. Increases in cash surrender value and death benefits are recorded in other income in the Evergy Companies' consolidated statements of income and comprehensive income. Interest expense incurred on policy loans is offset against the policy income. Income from death benefits is highly variable from period to period.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The following methods and assumptions were used to estimate the fair value of the following financial instruments for which it was practicable to estimate that value. Nuclear decommissioning trust fund - The Evergy Companies' nuclear decommissioning trust fund assets are recorded at fair value based on quoted market prices of the investments held by the fund and/or valuation models. Pension plans - For financial reporting purposes, the market value of plan assets is the fair value based on quoted market prices of the investments held by the fund and/or valuation models.
Revenue Recognition	Revenue Recognition The Evergy Companies recognize revenue on the sale of electricity to customers over time as the service is provided in the amount they have the right to invoice. Revenues recorded include electric services provided but not yet billed by the Evergy Companies. Unbilled revenues are recorded for kWh usage in the period following the customers' billing cycle to the end of the month. This estimate is based on net system kWh usage less actual billed kWhs. The Evergy Companies' estimated unbilled kWhs are allocated and priced by regulatory jurisdiction across the rate classes based on actual billing rates. The Evergy Companies' unbilled revenue estimate is affected by factors including fluctuations in energy demand, weather, line losses and changes in the composition of customer classes. See Note 3 for the balance of unbilled receivables for each of Evergy, Evergy Kansas Central and Evergy Metro as of December 31, 2021 and 2020. The Evergy Companies also collect sales taxes and franchise fees from customers concurrent with revenue-producing activities that are levied by state and local governments. These items are excluded from revenue, and thus are not reflected on the consolidated statements of income and comprehensive income for Evergy, Evergy Kansas Central and Evergy Metro.
Allowance for Credit Losses	Allowance for Credit Losses Historical loss information generally provides the basis for the Evergy Companies' assessment of expected credit losses. The Evergy Companies use an aging of accounts receivable method to assess historical loss information. When historical experience may not fully reflect the Evergy Companies' expectations about the future, the Evergy Companies will adjust historical loss information, as necessary, to reflect the current conditions and reasonable and supportable forecasts not already reflected in the historical loss information. Receivables are charged off when they are deemed uncollectible, which is based on a number of factors including specific facts surrounding an account and management's judgment.
Asset Impairments	Asset Impairments Long-lived assets and finite-lived intangible assets subject to amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If the sum of the undiscounted expected future cash flows from an asset to be held and used is less than the carrying value of the asset, an asset impairment must be recognized in the financial statements. The amount of impairment recognized is the excess of the carrying value of the asset over its fair value. Goodwill and indefinite lived intangible assets are tested for impairment annually and when an event occurs indicating the possibility that an impairment exists. The annual test must be performed at the same time each year. The goodwill impairment test consists of comparing the fair value of a reporting unit to its carrying amount, including goodwill, to identify potential impairment. In the event that the carrying amount exceeds the fair value of the reporting unit, an impairment loss is recognized for the difference between the carrying amount of the reporting unit and its fair value.
Income Taxes	Income Taxes Income taxes are accounted for using the asset/liability approach. Deferred tax assets and liabilities are determined based on the temporary differences between the financial reporting and tax bases of assets and liabilities, applying enacted statutory tax rates in effect for the year in which the differences are expected to reverse. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion of the deferred tax assets will not be realized. The Evergy Companies recognize tax benefits based on a "more-likely-than-not" recognition threshold. In addition, the Evergy Companies recognize interest accrued related to unrecognized tax benefits in interest expense and penalties in operating expenses. Evergy files a consolidated federal income tax return as well as unitary and combined income tax returns in several state jurisdictions with Kansas and Missouri being the most significant. Income taxes for consolidated or combined subsidiaries are allocated to the subsidiaries based on separate company computations of income or loss. Evergy Kansas Central's and Evergy Metro's income tax provisions include taxes allocated based on their separate company's income or loss. The Evergy Companies have established a net regulatory liability for future refunds to be made to customers for amounts collected from customers in excess of income taxes in current rates. Tax credits are recognized in the year generated except for certain Evergy Kansas Central, Evergy Metro and Evergy Missouri West investment tax credits that have been deferred and amortized over the remaining service lives of the related properties.
Earnings Per Share	Earnings Per ShareTo compute basic earnings per share (EPS), Evergy divides net income attributable to Evergy, Inc. by the weighted average number of common shares outstanding. Diluted EPS includes the effect of issuable common shares resulting from restricted share units (RSUs), restricted stock and a warrant. Evergy computes the dilutive effects of potential issuances of common shares using the treasury stock method or the contingently issuable share method, as applicable.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2021

Accounting Policies [Abstract]

Schedule of Fuel Inventory and Supplies

The following table separately states the balances for fuel inventory and supplies.


	December 31
	2021		2020
Evergy	(millions)
Fuel inventory	$	160.9	$	145.0
Supplies	405.8		359.5
Fuel inventory and supplies	$	566.7	$	504.5
Evergy Kansas Central
Fuel inventory	$	74.3	$	79.3
Supplies	208.9		197.1
Fuel inventory and supplies	$	283.2	$	276.4
Evergy Metro
Fuel inventory	$	62.0	$	44.9
Supplies	149.0		125.5
Fuel inventory and supplies	$	211.0	$	170.4

Schedule of Allowance for Funds used During Construction

The amounts of the Evergy Companies' AFUDC for borrowed and equity funds are detailed in the following table.


	2021		2020		2019
Evergy	(millions)
AFUDC borrowed funds	$	14.7	$	16.5	$	14.5
AFUDC equity funds	29.4		17.2		2.2
Total	$	44.1	$	33.7	$	16.7
Evergy Kansas Central
AFUDC borrowed funds	$	7.1	$	8.5	$	7.5
AFUDC equity funds	14.9		9.1		—
Total	$	22.0	$	17.6	$	7.5
Evergy Metro
AFUDC borrowed funds	$	6.0	$	6.0	$	4.3
AFUDC equity funds	12.6		8.0		2.2
Total	$	18.6	$	14.0	$	6.5

The average rates used in the calculation of AFUDC are detailed in the following table.


	2021	2020	2019
Evergy Kansas Central	4.9%	4.7%	3.0%
Evergy Metro	5.6%	5.2%	4.6%
Evergy Missouri West	2.6%	3.5%	3.7%

Schedule pf Depreciable Lives of Property Plant and Equipment

The depreciable lives of Evergy's, Evergy Kansas Central's and Evergy Metro's property, plant and equipment are detailed in the following table.


	Evergy			Evergy Kansas Central				Evergy Metro
	(years)
Generating facilities	8	to	87		8	to	87	20	to	60
Transmission facilities	15	to	94		36	to	94	15	to	70
Distribution facilities	8	to	73		19	to	73	8	to	55
Other	5	to	84		7	to	84	5	to	50

Schedule of Cash Surrender Value of Corporate Owned Life Insurance

Substantially all of Evergy's COLI-related balances relate to Evergy Kansas Central's COLI activity.


	December 31
	2021		2020
Evergy	(millions)
Cash surrender value of policies	$	1,363.0	$	1,369.6
Borrowings against policies	(1,232.3)		(1,237.6)
Corporate-owned life insurance, net	$	130.7	$	132.0

Schedule of Other Income Expense

The table below shows the detail of other expense for each of the Evergy Companies.


	2021		2020		2019
Evergy	(millions)
Non-service cost component of net benefit cost	$	(55.6)	$	(58.6)	$	(55.6)
Other	(31.8)		(19.6)		(21.3)
Other expense	$	(87.4)	$	(78.2)	$	(76.9)
Evergy Kansas Central
Non-service cost component of net benefit cost	$	(15.6)	$	(21.2)	$	(20.1)
Other	(20.3)		(17.7)		(20.0)
Other expense	$	(35.9)	$	(38.9)	$	(40.1)
Evergy Metro
Non-service cost component of net benefit cost	$	(26.7)	$	(24.2)	$	(20.9)
Other	(2.7)		(1.3)		(0.5)
Other expense	$	(29.4)	$	(25.5)	$	(21.4)

Schedule of Earnings Per Share, Basic and Diluted

The following table reconciles Evergy's basic and diluted EPS.


	2021		2020		2019
Income	(millions, except per share amounts)
Net income	$	891.9	$	630.0	$	685.6
Less: Net income attributable to noncontrolling interests	12.2		11.7		15.7
Net income attributable to Evergy, Inc.	$	879.7	$	618.3	$	669.9
Common Shares Outstanding
Weighted average number of common shares outstanding - basic	229.0		227.2		239.5
Add: effect of dilutive securities	0.6		0.3		0.4
Diluted average number of common shares outstanding	229.6		227.5		239.9
Basic EPS	$	3.84	$	2.72	$	2.80
Diluted EPS	$	3.83	$	2.72	$	2.79

Supplemental Cash Flow Information


Year Ended December 31	2021		2020		2019
Evergy	(millions)
Cash paid for (received from):
Interest, net of amount capitalized	$	356.9	$	367.6	$	329.5
Interest of VIEs	0.2		0.8		1.6
Income taxes, net of refunds	(19.6)		(46.5)		(5.2)
Non-cash investing transactions:
Property, plant and equipment additions	269.3		463.3		186.0
Non-cash financing transactions:
Issuance of stock for compensation and reinvested dividends	0.7		0.9		(0.3)


Year Ended December 31	2021		2020		2019
Evergy Kansas Central	(millions)
Cash paid for (received from):
Interest, net of amount capitalized	$	149.3	$	157.5	$	143.0
Interest of VIEs	0.2		0.8		1.6
Income taxes, net of refunds	37.5		4.7		29.9
Non-cash investing transactions:
Property, plant and equipment additions	101.9		235.4		92.1


Year Ended December 31	2021		2020		2019
Evergy Metro	(millions)
Cash paid for (received from):
Interest, net of amount capitalized	$	110.8	$	109.9	$	118.4
Income taxes, net of refunds	36.6		4.8		77.0
Non-cash investing transactions:
Property, plant and equipment additions	102.2		192.5		80.7

REVENUE (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

Evergy's, Evergy Kansas Central's and Evergy Metro's revenues disaggregated by customer class are summarized in the following tables.


Evergy

	2021		2020		2019
Revenues	(millions)
Residential	$	1,918.3	$	1,909.2	$	1,908.1
Commercial	1,681.3		1,641.7		1,781.6
Industrial	597.0		588.7		621.6
Other retail	33.1		38.5		47.1
Total electric retail	$	4,229.7	$	4,178.1	$	4,358.4
Wholesale	717.2		264.0		327.5
Transmission	356.8		318.5		309.2
Industrial steam and other	25.4		21.0		24.5
Total revenue from contracts with customers	$	5,329.1	$	4,781.6	$	5,019.6
Other	257.6		131.8		128.2
Operating revenues	$	5,586.7	$	4,913.4	$	5,147.8


Evergy Kansas Central

	2021		2020		2019
Revenues	(millions)
Residential	$	824.1	$	801.2	$	793.9
Commercial	694.1		665.6		709.1
Industrial	391.7		379.9		401.3
Other retail	17.1		17.7		21.0
Total electric retail	$	1,927.0	$	1,864.4	$	1,925.3
Wholesale	453.1		215.4		239.9
Transmission	322.9		287.3		273.3
Other	2.2		2.3		5.8
Total revenue from contracts with customers	$	2,705.2	$	2,369.4	$	2,444.3
Other	142.1		48.7		63.1
Operating revenues	$	2,847.3	$	2,418.1	$	2,507.4


Evergy Metro

	2021		2020		2019
Revenues	(millions)
Residential	$	691.9	$	714.7	$	712.4
Commercial	713.3		717.1		786.1
Industrial	122.0		128.8		136.9
Other retail	9.2		11.7		16.3
Total electric retail	$	1,536.4	$	1,572.3	$	1,651.7
Wholesale	242.6		35.0		70.9
Transmission	17.1		13.9		17.5
Other	3.6		2.6		2.8
Total revenue from contracts with customers	$	1,799.7	$	1,623.8	$	1,742.9
Other	114.0		81.8		63.6
Operating revenues	$	1,913.7	$	1,705.6	$	1,806.5

RECEIVABLES (Tables)

12 Months Ended

Dec. 31, 2021

Receivables [Abstract]

Schedule of Receivables

The Evergy Companies' receivables are detailed in the following table.



	December 31
	2021		2020
Evergy	(millions)
Customer accounts receivable - billed	$	13.7	$	5.3
Customer accounts receivable - unbilled	80.1		110.0
Other receivables	160.7		177.9
Allowance for credit losses	(32.9)		(19.3)
Total	$	221.6	$	273.9
Evergy Kansas Central
Customer accounts receivable - billed	$	9.7	$	—
Customer accounts receivable - unbilled	26.4		50.7
Other receivables	178.5		175.7
Allowance for credit losses	(13.0)		(7.5)
Total	$	201.6	$	218.9
Evergy Metro
Customer accounts receivable - billed	$	2.7	$	3.3
Customer accounts receivable - unbilled	25.9		27.9
Other receivables	15.7		21.9
Allowance for credit losses	(13.3)		(8.1)
Total	$	31.0	$	45.0

The Evergy Companies' other receivables also included receivables from contracts with customers as summarized in the following table.



	December 31
	2021		2020
	(millions)
Evergy	$	63.7	$	57.5
Evergy Kansas Central	62.6		49.9
Evergy Metro	0.5		6.9

The Evergy Companies' accounts receivable pledged as collateral and the corresponding short-term collateralized note payable are summarized in the following table.



	December 31
	2021		2020
	(millions)
Evergy	$	319.0	$	360.0
Evergy Kansas Central	153.0		180.0
Evergy Metro	116.0		130.0

Summary of Bad Debt Expense

The change in the Evergy Companies' allowance for credit losses is summarized in the following table.


	2021		2020
Evergy	(millions)
Beginning balance January 1	$	19.3	$	10.5
Credit loss expense	28.0		24.9
Write-offs	(26.4)		(28.6)
Recoveries of prior write-offs	12.0		12.5
Ending balance December 31	$	32.9	$	19.3
Evergy Kansas Central
Beginning balance January 1	$	7.5	$	3.8
Credit loss expense	12.0		11.1
Write-offs	(11.0)		(10.0)
Recoveries of prior write-offs	4.5		2.6
Ending balance December 31	$	13.0	$	7.5
Evergy Metro
Beginning balance January 1	$	8.1	$	4.6
Credit loss expense	10.5		9.0
Write-offs	(10.6)		(12.4)
Recoveries of prior write-offs	5.3		6.9
Ending balance December 31	$	13.3	$	8.1

RATE MATTERS AND REGULATION (Tables)

12 Months Ended

Dec. 31, 2021

Regulated Operations [Abstract]

Schedule of Regulatory Assets

The Evergy Companies' regulatory assets and liabilities are detailed in the following tables.


	December 31
	2021						2020
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Regulatory Assets	(millions)
Pension and post-retirement costs	$	567.2	$	265.6	$	213.3	$	867.8	$	412.9	$	359.9
Debt reacquisition costs	94.4		86.7		6.7		98.9		91.3		6.8
Debt fair value adjustment	96.5		—		—		104.0		—		—
Asset retirement obligations fair value adjustment	117.9		—		—		116.2		—		—
Depreciation	98.5		50.1		27.0		70.0		52.7		9.4
Cost of removal	257.5		141.0		90.2		183.4		125.7		57.7
Asset retirement obligations	119.3		52.3		49.1		170.8		55.0		84.0
Analog meter unrecovered investment	18.4		18.4		—		24.1		24.1		—
Treasury yield hedges	20.4		20.4		—		21.5		21.5		—
Iatan No. 1 and common facilities	6.5		—		2.7		6.9		—		2.8
Iatan No. 2 construction accounting costs	24.7		—		12.4		25.4		—		12.7
Kansas property tax surcharge	39.6		31.6		8.0		28.9		23.7		5.2
Disallowed plant costs	14.2		14.2		—		14.5		14.5		—
La Cygne environmental costs	11.2		9.0		2.2		12.4		10.1		2.3
Deferred customer programs	18.7		6.4		7.8		16.3		5.7		8.6
Fuel recovery mechanisms	202.5		120.8		19.8		26.2		1.2		17.7
February 2021 winter weather event	403.1		121.5		—		—		—		—
Solar rebates	20.2		—		—		25.9		—		1.5

Wolf Creek outage	20.4		10.2		10.2		10.0		5.0		5.0
Pension and other post-retirement benefit non-service costs	65.6		23.0		29.6		49.8		12.8		23.4
Retired generation facilities	123.4		—		—		128.4		—		—
Merger transition costs	32.7		15.6		12.1		37.6		18.0		13.9
Other regulatory assets	42.3		24.1		5.9		35.4		22.1		4.6
Total	2,415.2		1,010.9		497.0		2,074.4		896.3		615.5
Less: current portion	(424.1)		(257.3)		(86.3)		(206.2)		(96.2)		(82.0)
Total noncurrent regulatory assets	$	1,991.1	$	753.6	$	410.7	$	1,868.2	$	800.1	$	533.5

Schedule of Regulatory Liabilities


	December 31
	2021						2020
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Regulatory Liabilities	(millions)
Taxes refundable through future rates	$	1,969.5	$	1,143.7	$	616.1	$	2,055.7	$	1,184.5	$	650.2
Deferred regulatory gain from sale leaseback	42.6		42.6		—		48.1		48.1		—
Emission allowances	42.1		—		42.1		46.1		—		46.1
Nuclear decommissioning	400.1		175.7		224.4		319.7		138.2		181.5
Pension and post-retirement costs	44.4		23.2		15.9		50.8		31.4		13.1
Jurisdictional allowance for funds used during construction	27.5		25.8		1.7		28.7		27.0		1.7
La Cygne leasehold dismantling costs	29.6		29.6		—		29.6		29.6		—
Cost of removal	—		—		—		4.4		—		—
Kansas tax credits	16.7		16.7		—		—		—		—
Purchase power agreement	5.8		5.8		—		6.3		6.3		—

Fuel recovery mechanisms	6.5		—		6.5		1.3		—		—
February 2021 winter weather event	65.1		—		65.1		—		—		—
Sibley AAO	29.3		—		—		18.4		—		—

Other regulatory liabilities	96.5		19.1		37.0		55.8		7.8		14.8
Total	2,775.7		1,482.2		1,008.8		2,664.9		1,472.9		907.4
Less: current portion	(70.7)		(12.8)		(54.6)		(26.1)		(11.9)		(8.0)
Total noncurrent regulatory liabilities	$	2,705.0	$	1,469.4	$	954.2	$	2,638.8	$	1,461.0	$	899.4

ASSET RETIREMENT OBLIGATIONS (Tables)

12 Months Ended

Dec. 31, 2021

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Change in Asset Retirement Obligation

The following table summarizes the change in the Evergy Companies' AROs for the periods ending December 31, 2021 and 2020.


	Evergy				Evergy Kansas Central				Evergy Metro
	2021		2020		2021		2020		2021		2020
	(millions)
Beginning balance January 1	$	941.9	$	674.1	$	427.2	$	272.9	$	378.9	$	253.6

Revision in timing and/or estimates	13.5		249.3		3.8		136.8		9.5		118.4
Settlements	(38.7)		(18.4)		(10.6)		(2.2)		(24.4)		(7.5)
Accretion	43.4		36.9		23.5		19.7		17.0		14.4
Ending balance	$	960.1	$	941.9	$	443.9	$	427.2	$	381.0	$	378.9
Less: current portion	(19.5)		(40.2)		(7.3)		(11.2)		(11.0)		(21.2)
Total noncurrent asset retirement obligation	$	940.6	$	901.7	$	436.6	$	416.0	$	370.0	$	357.7

PROPERTY, PLANT AND EQUIPMENT (Tables)

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

Schedule of Public Utility Property, Plant, and Equipment

The following tables summarize the property, plant and equipment of Evergy, Evergy Kansas Central and Evergy Metro.


December 31, 2021	Evergy			Evergy Kansas Central			Evergy Metro
		(millions)
Electric plant in service		$	30,289.9		$	14,686.3		$	11,656.9
Electric plant acquisition adjustment		724.3			724.3			—
Accumulated depreciation		(11,515.5)			(5,590.8)			(4,733.7)
Plant in service		19,498.7			9,819.8			6,923.2
Construction work in progress		1,350.6			652.2			475.3
Nuclear fuel, net		152.5			76.1			76.4
Plant to be retired, net (a)		0.8			0.8			—
Net property, plant and equipment		$	21,002.6		$	10,548.9		$	7,474.9

December 31, 2020	Evergy			Evergy Kansas Central			Evergy Metro
		(millions)
Electric plant in service		$	28,914.8		$	14,095.1		$	11,161.8
Electric plant acquisition adjustment		724.3			724.3			—
Accumulated depreciation		(10,998.4)			(5,293.5)			(4,532.7)
Plant in service		18,640.7			9,525.9			6,629.1
Construction work in progress		1,153.5			589.1			433.9
Nuclear fuel, net		155.9			77.7			78.2
Plant to be retired, net (a)		0.9			0.9			—
Net property, plant and equipment		$	19,951.0		$	10,193.6		$	7,141.2

(a) As of December 31, 2021 and 2020, represents the planned retirement of Evergy Kansas Central analog meters prior to the end of their remaining useful lives.

The following table summarizes the property, plant and equipment of VIEs for Evergy and Evergy Kansas Central.


		December 31
	2021			2020
		(millions)
Electric plant of VIEs		$	392.1		$	392.1
Accumulated depreciation of VIEs		(244.3)			(237.2)
Net property, plant and equipment of VIEs		$	147.8		$	154.9

The Evergy Companies' depreciation expense is detailed in the following table.


	2021		2020		2019
	(millions)
Evergy (a)	$	813.6	$	804.7	$	786.3
Evergy Kansas Central (a)	450.3		435.1		425.8
Evergy Metro	255.9		269.5		262.7

(a) Approximately $7.1 million of depreciation expense in each of 2021, 2020 and 2019 was attributable to property, plant and equipment of VIEs.

JOINTLY-OWNED ELECTRIC UTILITY PLANTS (Tables)

12 Months Ended

Dec. 31, 2021

Jointly Owned Electric Utility Plants [Abstract]

Schedule of Jointly Owned Utility Plants

Evergy's, Evergy Kansas Central's and Evergy Metro's share of jointly-owned electric utility plants at December 31, 2021, are detailed in the following tables.


Evergy
	Wolf Creek Unit			La Cygne Units (a)			Iatan No. 1 Unit			Iatan No. 2 Unit			Iatan Common			Jeffrey Energy Center			State Line
	(millions, except MW amounts)
Evergy's share		94%			100%			88%			73%			79%			100%			40%

Electric plant in service		$	4,078.7		$	2,219.1		$	765.7		$	1,405.9		$	503.6		$	2,521.1		$	115.0
Accumulated depreciation		2,040.2			816.0			251.9			480.3			122.2			1,036.7			85.2
Nuclear fuel, net		152.5			—			—			—			—			—			—
Construction work in progress		187.4			52.6			4.4			8.1			7.4			48.7			25.5
2022 accredited capacity-MWs		1,108			1,426			618			640			n/a			2,191			200


Evergy Kansas Central
	Wolf Creek Unit			La Cygne Units (a)			Jeffrey Energy Center		State Line
	(millions, except MW amounts)
Evergy Kansas Central's share		47%			50%		92%			40%

Electric plant in service		$	2,019.8		$	1,047.4	$	2,307.6		$	115.0
Accumulated depreciation		992.2			475.2		944.5			85.2
Nuclear fuel, net		76.1			—		—			—
Construction work in progress		83.6			29.0		44.9			25.5
2022 accredited capacity-MWs		554			713		2,016			200


Evergy Metro
	Wolf Creek Unit			La Cygne Units			Iatan No. 1 Unit			Iatan No. 2 Unit			Iatan Common
	(millions, except MW amounts)
Evergy Metro's share		47%			50%			70%			55%			61%

Electric plant in service		$	2,058.9		$	1,171.7		$	594.8		$	1,066.4		$	399.6
Accumulated depreciation		1,048.0			340.8			205.3			412.5			103.3
Nuclear fuel, net		76.4			—			—			—			—
Construction work in progress		103.8			23.6			3.6			6.1			5.5
2022 accredited capacity-MWs		554			713			492			482			NA

PENSION PLANS AND POST-RETIREMENT BENEFITS (Tables)

12 Months Ended

Dec. 31, 2021

Retirement Benefits [Abstract]

Schedule of Net Funded Status


	Pension Benefits						Post-Retirement Benefits
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Change in projected benefit obligation (PBO)	(millions)
PBO at January 1, 2021	$	2,901.1	$	1,429.6	$	1,446.5	$	280.4	$	146.8	$	133.6
Service cost	82.6		29.1		53.5		3.3		1.7		1.6
Interest cost	84.2		41.0		42.5		7.8		4.0		3.8
Contribution by participants	—		—		—		9.0		1.4		7.6

Actuarial gain	(119.0)		(50.0)		(68.3)		(17.2)		(9.4)		(7.8)
Benefits paid	(93.5)		(54.8)		(37.5)		(24.9)		(10.6)		(14.3)
Settlements	(284.0)		(126.2)		(157.8)		—		—		—
Other	(9.7)		(4.3)		(5.4)		—		—		—
PBO at December 31, 2021	$	2,561.7	$	1,264.4	$	1,273.5	$	258.4	$	133.9	$	124.5
Change in plan assets
Fair value of plan assets at January 1, 2021	$	1,799.1	$	887.0	$	912.1	$	248.3	$	125.8	$	122.5
Actual return on plan assets	145.5		83.4		62.1		5.2		6.5		(1.3)
Contributions by employer and participants	148.7		46.5		102.2		11.8		1.7		10.1
Benefits paid	(89.4)		(52.3)		(37.1)		(23.0)		(10.0)		(13.0)
Settlements	(279.5)		(124.6)		(154.9)		—		—		—
Other	(9.7)		(4.3)		(5.4)		—		—		—
Fair value of plan assets at December 31, 2021	$	1,714.7	$	835.7	$	879.0	$	242.3	$	124.0	$	118.3
Funded status at December 31, 2021	$	(847.0)	$	(428.7)	$	(394.5)	$	(16.1)	$	(9.9)	$	(6.2)


	Pension Benefits						Post-Retirement Benefits
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Change in projected benefit obligation (PBO)	(millions)
PBO at January 1, 2020	$	2,718.2	$	1,323.4	$	1,371.4	$	264.3	$	138.7	$	125.6
Service cost	78.9		27.1		51.8		2.7		1.1		1.6
Interest cost	96.8		47.0		49.1		9.2		4.8		4.4
Contribution by participants	—		—		—		9.3		1.8		7.5
Plan amendments	4.2		8.1		(3.9)		1.0		0.5		0.5
Actuarial loss	273.9		127.0		144.8		19.6		11.0		8.6
Benefits paid	(202.5)		(102.3)		(99.0)		(25.7)		(11.1)		(14.6)
Settlements	(62.9)		—		(62.9)		—		—		—
Other	(5.5)		(0.7)		(4.8)		—		—		—
PBO at December 31, 2020	$	2,901.1	$	1,429.6	$	1,446.5	$	280.4	$	146.8	$	133.6
Change in plan assets
Fair value of plan assets at January 1, 2020	$	1,732.8	$	842.1	$	890.7	$	239.9	$	120.5	$	119.4
Actual return on plan assets	209.9		99.7		110.2		20.7		13.7		7.0
Contributions by employer and participants	123.4		45.8		77.6		11.7		2.1		9.6
Benefits paid	(198.6)		(99.9)		(98.7)		(24.0)		(10.5)		(13.5)
Settlements	(62.9)		—		(62.9)		—		—		—
Other	(5.5)		(0.7)		(4.8)		—		—		—
Fair value of plan assets at December 31, 2020	$	1,799.1	$	887.0	$	912.1	$	248.3	$	125.8	$	122.5
Funded status at December 31, 2020	$	(1,102.0)	$	(542.6)	$	(534.4)	$	(32.1)	$	(21.0)	$	(11.1)

Schedule of Amounts Recognized in Balance Sheet


	Pension Benefits						Post-Retirement Benefits
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Amounts recognized in the consolidated balance sheets					(millions)
Non-current asset	$	—	$	—	$	—	$	21.5	$	—	$	21.5
Current pension and other post-retirement liability	(4.4)		(2.4)		(0.7)		(1.1)		(0.6)		(0.6)
Noncurrent pension liability and other post-retirement liability	(842.6)		(426.3)		(393.8)		(36.5)		(9.3)		(27.1)
Net amount recognized before regulatory treatment	(847.0)		(428.7)		(394.5)		(16.1)		(9.9)		(6.2)
Accumulated OCI or regulatory asset/liability	317.2		263.6		84.6		(11.4)		(9.6)		(10.5)
Net amount recognized at December 31, 2021	$	(529.8)	$	(165.1)	$	(309.9)	$	(27.5)	$	(19.5)	$	(16.7)
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Actuarial (gain) loss	$	302.4	$	246.6	$	86.4	$	(12.6)	$	(10.5)	$	(3.8)
Prior service cost	14.8		17.0		(1.8)		1.2		0.9		(6.7)
Net amount recognized at December 31, 2021	$	317.2	$	263.6	$	84.6	$	(11.4)	$	(9.6)	$	(10.5)


	Pension Benefits						Post-Retirement Benefits
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Amounts recognized in the consolidated balance sheets					(millions)
Non-current asset	$	—	$	—	$	—	$	21.3	$	—	$	21.3
Current pension and other post-retirement liability	(4.4)		(2.5)		(0.8)		(1.6)		(0.8)		(0.9)
Noncurrent pension liability and other post- retirement liability	(1,097.6)		(540.1)		(533.6)		(51.8)		(20.2)		(31.5)
Net amount recognized before regulatory treatment	(1,102.0)		(542.6)		(534.4)		(32.1)		(21.0)		(11.1)
Accumulated OCI or regulatory asset/liability	566.9		408.0		216.9		4.0		1.0		(7.7)
Net amount recognized at December 31, 2020	$	(535.1)	$	(134.6)	$	(317.5)	$	(28.1)	$	(20.0)	$	(18.8)
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Actuarial (gain) loss	$	551.8	$	388.9	$	218.6	$	2.2	$	(0.3)	$	—
Prior service cost	15.1		19.1		(1.7)		1.8		1.3		(7.7)
Net amount recognized at December 31, 2020	$	566.9	$	408.0	$	216.9	$	4.0	$	1.0	$	(7.7)

Schedule of Net Benefit Costs

The assets in the aforementioned trusts are not included in the table above. See Note 13 for more information on these amounts.


	Pension Benefits						Post-Retirement Benefits
Year Ended December 31, 2021	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Components of net periodic benefit costs	(millions)
Service cost	$	82.6	$	29.1	$	53.5	$	3.3	$	1.7	$	1.6
Interest cost	84.2		41.0		42.5		7.8		4.0		3.8
Expected return on plan assets	(103.5)		(52.8)		(55.7)		(8.9)		(6.3)		(2.6)
Prior service cost	2.0		2.1		—		0.5		0.5		(1.0)
Recognized net actuarial (gain) loss	54.1		36.0		43.8		1.4		0.6		(0.1)
Settlement and special termination benefits	34.3		25.6		13.7		—		—		—
Net periodic benefit costs before regulatory adjustment and intercompany allocations	153.7		81.0		97.8		4.1		0.5		1.7
Regulatory adjustment	17.3		(13.1)		4.2		(4.8)		(3.3)		0.4
Intercompany allocations	n/a		3.2		(25.9)		n/a		—		(0.4)
Net periodic benefit costs (income)	171.0		71.1		76.1		(0.7)		(2.8)		1.7
Other changes in plan assets and benefit obligations recognized in OCI or regulatory assets/liabilities
Current year net gain	(195.3)		(106.3)		(88.4)		(13.6)		(9.6)		(3.9)
Amortization of gain (loss)	(52.4)		(36.0)		(43.9)		(1.3)		(0.5)		0.1

Amortization of prior service cost	(2.0)		(2.1)		—		(0.5)		(0.5)		1.0

Total recognized in OCI or regulatory asset/liability	(249.7)		(144.4)		(132.3)		(15.4)		(10.6)		(2.8)
Total recognized in net periodic benefit costs and OCI or regulatory asset/liability	$	(78.7)	$	(73.3)	$	(56.2)	$	(16.1)	$	(13.4)	$	(1.1)


	Pension Benefits						Post-Retirement Benefits
Year Ended December 31, 2020	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Components of net periodic benefit costs	(millions)
Service cost	$	78.9	$	27.1	$	51.8	$	2.7	$	1.1	$	1.6
Interest cost	96.8		47.0		49.1		9.2		4.8		4.4
Expected return on plan assets	(105.6)		(53.1)		(54.7)		(9.3)		(6.6)		(2.7)
Prior service cost	1.8		1.6		0.8		0.5		0.5		—
Recognized net actuarial loss	46.4		33.9		45.7		0.2		—		(0.6)
Settlement and special termination benefits	11.2		—		14.3		—		—		—
Net periodic benefit costs before regulatory adjustment and intercompany allocations	129.5		56.5		107.0		3.3		(0.2)		2.7
Regulatory adjustment	29.6		5.9		(11.6)		(4.0)		(3.0)		(0.2)
Intercompany allocations	n/a		(0.2)		(22.6)		n/a		0.1		(0.3)
Net periodic benefit costs (income)	159.1		62.2		72.8		(0.7)		(3.1)		2.2
Other changes in plan assets and benefit obligations recognized in OCI or regulatory assets/liabilities
Current year net loss	169.7		80.4		89.3		8.2		3.9		4.3
Amortization of gain (loss)	(59.2)		(33.8)		(60.0)		(0.2)		—		0.6
Prior service cost	4.1		8.1		(3.9)		0.9		0.5		0.4
Amortization of prior service cost	(1.8)		(1.6)		(0.8)		(0.5)		(0.5)		—
Total recognized in OCI or regulatory asset/liability	112.8		53.1		24.6		8.4		3.9		5.3
Total recognized in net periodic benefit costs and OCI or regulatory asset/liability	$	271.9	$	115.3	$	97.4	$	7.7	$	0.8	$	7.5


	Pension Benefits						Post-Retirement Benefits
Year Ended December 31, 2019	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Components of net periodic benefit costs	(millions)
Service cost	$	79.1	$	29.0	$	50.1	$	2.5	$	1.1	$	1.4
Interest cost	108.0		53.7		53.3		10.5		5.6		4.9
Expected return on plan assets	(106.3)		(54.8)		(48.9)		(10.0)		(6.7)		(3.3)
Prior service cost	1.9		1.7		0.9		0.5		0.5		—
Recognized net actuarial (gain) loss	33.0		25.5		49.8		(1.2)		(0.6)		(1.4)
Settlement and special termination benefits	15.6		—		23.0		—		—		—
Net periodic benefit costs before regulatory adjustment and intercompany allocations	131.3		55.1		128.2		2.3		(0.1)		1.6
Regulatory adjustment	37.4		3.0		(19.2)		(3.4)		(3.0)		0.4
Intercompany allocations	n/a		—		(34.4)		n/a		—		(0.4)
Net periodic benefit costs (income)	168.7		58.1		74.6		(1.1)		(3.1)		1.6
Other changes in plan assets and benefit obligations recognized in OCI or regulatory assets/liabilities
Current year net (gain) loss	84.7		44.6		35.9		0.9		(3.8)		4.7
Amortization of gain (loss)	(48.6)		(25.5)		(72.8)		1.2		0.6		1.4
Amortization of prior service cost	(1.9)		(1.7)		(0.9)		(0.5)		(0.5)		—
Total recognized in OCI or regulatory asset/liability	34.2		17.4		(37.8)		1.6		(3.7)		6.1
Total recognized in net periodic benefit costs and OCI or regulatory asset/liability	$	202.9	$	75.5	$	36.8	$	0.5	$	(6.8)	$	7.7

Schedule of Defined Benefit Plan, Plan with Projected Benefit Obligation in Excess of Plan Assets


December 31, 2021	Evergy		Evergy Kansas Central		Evergy Metro
	(millions)
ABO for all defined benefit pension plans	$	2,229.1	$	1,124.2	$	1,081.1
Pension plans with the PBO in excess of plan assets
Projected benefit obligation	$	2,561.7	$	1,264.4	$	1,273.5
Fair value of plan assets	1,714.7		835.7		879.0
Pension plans with the ABO in excess of plan assets
Accumulated benefit obligation	$	2,229.1	$	1,124.2	$	1,081.1
Fair value of plan assets	1,714.7		835.7		879.0
Other post-retirement benefit plans with the APBO in excess of plan assets
Accumulated other post-retirement benefit obligation	$	258.4	$	133.9	$	124.5
Fair value of plan assets	242.3		124.0		118.3


December 31, 2020	Evergy		Evergy Kansas Central		Evergy Metro
	(millions)
ABO for all defined benefit pension plans	$	2,534.1	$	1,281.6	$	1,227.4
Pension plans with the PBO in excess of plan assets
Projected benefit obligation	$	2,901.1	$	1,429.6	$	1,446.5
Fair value of plan assets	1,799.1		887.0		912.1
Pension plans with the ABO in excess of plan assets
Accumulated benefit obligation	$	2,534.1	$	1,281.6	$	1,227.4
Fair value of plan assets	1,799.1		887.0		912.1
Other post-retirement benefit plans with the APBO in excess of plan assets
Accumulated other post-retirement benefit obligation	$	280.4	$	146.8	$	133.6
Fair value of plan assets	248.3		125.8		122.5

Schedule of Defined Benefit Plan, Assumptions

The following tables provide the weighted-average assumptions used to determine benefit obligations and net costs for the Evergy Companies' pension and post-retirement benefit plans.


Weighted-average assumptions used to determine the benefit obligation at December 31, 2021	Pension Benefits						Post-Retirement Benefits
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Discount rate	3.10	%	3.10	%	3.11	%	3.12	%	3.11	%	3.13	%
Rate of compensation increase	3.75	%	3.77	%	3.71	%	3.75	%	n/a		3.75	%
Interest crediting rate for cash balance plans	4.13	%	4.00	%	4.45	%	n/a		n/a		n/a

Weighted-average assumptions used to determine the benefit obligation at December 31, 2020	Pension Benefits						Post-Retirement Benefits
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Discount rate	2.95	%	2.93	%	2.97	%	2.84	%	2.80	%	2.88	%
Rate of compensation increase	3.71	%	3.76	%	3.71	%	3.75	%	n/a		3.75	%
Interest crediting rate for cash balance plans	4.12	%	4.00	%	4.46	%	n/a		n/a		n/a


Weighted-average assumptions used to determine net costs for the year ended December 31, 2021	Pension Benefits						Post-Retirement Benefits
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Discount rate	2.95	%	2.93	%	2.97	%	2.84	%	2.80	%	2.88	%
Expected long-term return on plan assets	6.63	%	6.70	%	6.57	%	3.93	%	5.55	%	2.27	%
Rate of compensation increase	3.71	%	3.78	%	3.71	%	3.75	%	n/a		3.75	%
Interest crediting rate for cash balance plans	4.12	%	4.00	%	4.46	%	n/a		n/a		n/a

Weighted-average assumptions used to determine net costs for the year ended December 31, 2020	Pension Benefits						Post-Retirement Benefits
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Discount rate	3.62	%	3.61	%	3.64	%	3.56	%	3.54	%	3.58	%
Expected long-term return on plan assets	6.63	%	6.70	%	6.56	%	4.19	%	6.00	%	2.37	%
Rate of compensation increase	3.74	%	3.75	%	3.71	%	3.75	%	n/a		3.75	%
Interest crediting rate for cash balance plans	4.32	%	4.21	%	4.50	%	n/a		n/a		n/a

Schedule of Expected Benefit Payments

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid through 2031.


	Pension Benefits						Post-Retirement Benefits
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
	(millions)
2022	$	159.5	$	80.8	$	77.5	$	16.1	$	9.2	$	6.9
2023	160.4		79.6		79.5		15.6		9.0		6.7
2024	163.8		80.6		81.7		15.1		8.5		6.6
2025	168.1		81.3		85.3		14.7		8.2		6.5
2026	173.5		83.2		88.8		14.3		8.0		6.4
2027-2031	862.9		399.5		455.7		68.5		37.2		31.2

Schedule of Allocation of Plan Assets

The following table provides the target asset allocations by asset class for the Evergy Kansas Central and Evergy Metro pension and other post-retirement plan assets.


	Pension Benefits		Post-Retirement Benefits
	Evergy Kansas Central	Evergy Metro	Evergy Kansas Central	Evergy Metro
Domestic equities	26%	26%	26%	15%
International equities	20%	19%	18%	8%
Bonds	39%	37%	51%	68%
Mortgage & asset backed securities	—%	—%	—%	6%
Real estate investments	4%	7%	—%	—%
Other investments	11%	11%	5%	3%

The fair values of the Evergy Companies' pension plan assets at December 31, 2021 and 2020, by asset category are in the following tables.


				Fair Value Measurements Using
Description	December 31 2021			Level 1			Level 2			Level 3			Assets measured at NAV
		(millions)
Evergy Kansas Central Pension Plans
Domestic equities		$	209.9		$	177.3		$	—		$	—		$	32.6
International equities		167.4			167.4			—			—			—
Bond funds		330.4			330.4			—			—			—



Real estate investments		28.1			—			—			—			28.1
Combination debt/equity/other fund		42.7			42.7			—			—			—
Alternative investment funds		44.1			—			—			—			44.1
Short-term investments		13.1			—			—			—			13.1


Total		$	835.7		$	717.8		$	—		$	—		$	117.9

Evergy Metro Pension Plans
Domestic equities		$	203.0		$	179.5		$	—		$	—		$	23.5
International equities		193.1			193.1			—			—			—
Bond funds		260.6			260.6			—			—			—
Corporate bonds		27.1			—			27.1			—			—
U.S. Treasury and agency bonds		14.5			4.7			9.8			—			—
Mortgage and asset backed securities		4.3			—			4.3			—			—
Real estate investments		55.9			—			—			—			55.9
Combination debt/equity/other fund		46.2			46.2			—			—			—
Alternative investment funds		47.5			—			—			—			47.5
Cash and cash equivalents		14.1			14.1			—			—			—
Short-term investments		9.5			—			—			—			9.5
Other		3.2			—			3.2			—			—
Total		$	879.0		$	698.2		$	44.4		$	—		$	136.4


				Fair Value Measurements Using
Description	December 31 2020			Level 1			Level 2			Level 3			Assets measured at NAV
		(millions)
Evergy Kansas Central Pension Plans
Domestic equities		$	248.5		$	151.3		$	—		$	—		$	97.2
International equities		171.2			103.8			—			—			67.4
Bond funds		281.2			230.7			—			—			50.5
Real estate investments		46.7			—			—			—			46.7
Combination debt/equity/other fund		30.4			30.4			—			—			—
Alternative investment funds		83.6			—			—			—			83.6
Short-term investments		25.4			—			—			—			25.4

Total		$	887.0		$	516.2		$	—		$	—		$	370.8

Evergy Metro Pension Plans
Domestic equities		$	247.4		$	191.9		$	—		$	—		$	55.5
International equities		220.8			153.4			—			—			67.4
Bond funds		78.1			21.1			—			—			57.0
Corporate bonds		133.6			—			133.6			—			—
U.S. Treasury and agency bonds		73.8			61.5			12.3			—			—
Mortgage and asset backed securities		5.0			—			5.0			—			—
Real estate investments		40.2			1.6			—			—			38.6
Combination debt/equity/other fund		15.6			15.6			—			—			—
Alternative investment funds		39.7			—			—			—			39.7
Cash and cash equivalents		57.3			57.3			—			—			—
Short-term investments		1.4			—			—			—			1.4
Other		(0.8)			—			(0.8)			—			—
Total		$	912.1		$	502.4		$	150.1		$	—		$	259.6

The fair values of the Evergy Companies' post-retirement plan assets at December 31, 2021 and 2020, by asset category are in the following tables.


				Fair Value Measurements Using
Description	December 31 2021			Level 1			Level 2			Level 3			Assets measured at NAV
		(millions)
Evergy Kansas Central Post-Retirement Benefit Plans
Domestic equities		$	32.5		$	32.5		$	—		$	—		$	—
International equities		22.1			22.1			—			—			—
Bond funds		62.3			62.3			—			—			—







Combination debt/equity/other fund		6.1			6.1			—			—			—
Short-term investments		1.0			—			—			—			1.0

Total		$	124.0		$	123.0		$	—		$	—		$	1.0

Evergy Metro Post-Retirement Benefit Plans
Domestic equities		$	20.0		$	20.0		$	—		$	—		$	—
International equities		12.3			12.3			—			—			—
Bond funds		50.2			50.2			—			—			—
Corporate bonds		18.1			—			18.1			—			—
U.S. Treasury and agency bonds		12.1			6.1			6.0			—			—
Mortgage and asset backed securities		0.8			—			0.8			—			—



Combination debt/equity/other fund		3.9			3.9			—			—			—
Cash and cash equivalents		0.5			0.5			—			—			—
Short-term investments		0.1			—			—			—			0.1
Other		0.3			—			0.3			—			—
Total		$	118.3		$	93.0		$	25.2		$	—		$	0.1


				Fair Value Measurements Using
Description	December 31 2020			Level 1			Level 2			Level 3			Assets measured at NAV
		(millions)
Evergy Kansas Central Post-Retirement Benefit Plans
Domestic equities		$	41.9		$	—		$	—		$	—		$	41.9
International equities		27.7			—			—			—			27.7
Bond funds		55.5			—			—			—			55.5
Cash and cash equivalents		0.7			0.7			—			—			—
Total		$	125.8		$	0.7		$	—		$	—		$	125.1

Evergy Metro Post-Retirement Benefit Plans
Domestic equities		$	4.6		$	4.6		$	—		$	—		$	—
International equities		1.2			1.2			—			—			—
Bond funds		79.0			0.2			—			—			78.8
Corporate bonds		17.9			—			17.9			—			—
U.S. Treasury and agency bonds		13.6			5.7			7.9			—			—
Mortgage and asset backed securities		0.5			—			0.5			—			—
Cash and cash equivalents		5.4			5.4			—			—			—
Other		0.3			—			0.3			—			—
Total		$	122.5		$	17.1		$	26.6		$	—		$	78.8

Schedule of Health Care Cost Trend Rates

The cost trend assumptions are detailed in the following tables.


Assumed annual health care cost growth rates as of December 31, 2021	Evergy		Evergy Kansas Central		Evergy Metro
Health care cost trend rate assumed for next year	6.0	%	6.0	%	6.0	%
Rate to which the cost trend is assumed to decline (the ultimate trend rate)	4.5	%	4.5	%	4.5	%
Year that rate reaches ultimate trend	2030		2030		2030

Assumed annual health care cost growth rates as of December 31, 2020	Evergy		Evergy Kansas Central		Evergy Metro
Health care cost trend rate assumed for next year	6.0	%	6.0	%	6.0	%
Rate to which the cost trend is assumed to decline (the ultimate trend rate)	4.5	%	4.5	%	4.5	%
Year that rate reaches ultimate trend	2027		2027		2027

Schedule of Costs of Retirement Plans


	2021		2020		2019
	(millions)
Evergy	$	25.6	$	17.4	$	17.6
Evergy Kansas Central	11.7		9.6		9.6
Evergy Metro	13.9		7.8		8.0

EQUITY COMPENSATION (Tables)

12 Months Ended

Dec. 31, 2021

Share-based Payment Arrangement [Abstract]

Schedule of Equity Compensation Expense and Associated Income Tax Benefits

The following table summarizes the Evergy Companies' equity compensation expense and the associated income tax benefit.


	2021		2020		2019
Evergy	(millions)
Equity compensation expense	$	15.6	$	15.5	$	15.5
Income tax (expense) benefit	(0.1)		2.2		3.0
Evergy Kansas Central
Equity compensation expense	6.9		7.6		6.7
Income tax (expense) benefit	(0.2)		1.6		1.9
Evergy Metro
Equity compensation expense	5.1		5.7		5.7
Income tax (expense) benefit	(0.6)		0.2		0.3

Schedule of Restricted Stock Unit Activity

RSU activity for awards with performance measures for 2021 is summarized in the following table.


	Nonvested Restricted Share Units		Grant Date Fair Value*
Beginning balance January 1, 2021		347,964		$	61.57
Granted		270,277		57.21

Forfeited		(104,526)		64.85
Ending balance December 31, 2021		513,715		58.79

* weighted-average

RSU activity for awards with only service requirements for 2021 is summarized in the following table.


	Nonvested Restricted Share Units		Grant Date Fair Value*
Beginning balance January 1, 2021		160,742		$	59.42
Granted		171,363		55.30
Vested		(43,785)		54.61
Forfeited		(35,274)		59.24
Ending balance December 31, 2021		253,046		57.18

* weighted-average

SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDIT (Tables)

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

Schedule of Short-term Debt

The following table summarizes the committed credit facilities (excluding receivable sale facilities discussed in Note 3) available to the Evergy Companies as of December 31, 2021 and 2020.


			Amounts Drawn
	Master Credit Facility		Commercial Paper		Letters of Credit		Cash Borrowings		Available Borrowings		Weighted Average Interest Rate on Short-Term Borrowings
December 31, 2021	(millions)
Evergy, Inc.	$	700.0	$	358.0	$	0.7	$	—	$	341.3	0.34%
Evergy Kansas Central	750.0		406.0		0.1		—		343.9		0.41%
Evergy Metro	350.0		—		—		—		350.0		—%
Evergy Missouri West	700.0		395.3		—		—		304.7		0.40%
Evergy	$	2,500.0	$	1,159.3	$	0.8	$	—	$	1,339.9

December 31, 2020
Evergy, Inc.	$	450.0	n/a		$	0.7	$	200.0	$	249.3	1.40%
Evergy Kansas Central	1,000.0		50.0		17.0		—		933.0		0.23%
Evergy Metro	600.0		—		—		—		600.0		—%
Evergy Missouri West	450.0		65.0		2.0		—		383.0		0.36%
Evergy	$	2,500.0	$	115.0	$	19.7	$	200.0	$	2,165.3

In May 2021, Evergy, Inc. established a commercial paper program supported by its borrowing capacity under the master credit facility.

LONG-TERM DEBT (Tables)

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

Schedule of Debt

The Evergy Companies' long-term debt is detailed in the following tables.


December 31, 2021	Issuing Entity	Year Due	Evergy		Evergy Kansas Central		Evergy Metro
Mortgage Bonds			(millions)
3.25% Series	Evergy Kansas Central, Inc.	2025	250.0		250.0		—
2.55% Series	Evergy Kansas Central, Inc.	2026	350.0		350.0		—
3.10% Series	Evergy Kansas Central, Inc.	2027	300.0		300.0		—
4.125% Series	Evergy Kansas Central, Inc.	2042	550.0		550.0		—
4.10% Series	Evergy Kansas Central, Inc.	2043	430.0		430.0		—
4.625% Series	Evergy Kansas Central, Inc.	2043	250.0		250.0		—
4.25% Series	Evergy Kansas Central, Inc.	2045	300.0		300.0		—
3.25% Series	Evergy Kansas Central, Inc.	2049	300.0		300.0
3.45% Series	Evergy Kansas Central, Inc.	2050	500.0		500.0		—
6.15% Series	Evergy Kansas South, Inc.	2023	50.0		50.0		—
6.53% Series	Evergy Kansas South, Inc.	2037	175.0		175.0		—
6.64% Series	Evergy Kansas South, Inc.	2038	100.0		100.0		—
4.30% Series	Evergy Kansas South, Inc.	2044	250.0		250.0		—
2.95% EIRR bonds	Evergy Metro, Inc.	2023	79.5		—		79.5
4.125% Series	Evergy Metro, Inc.	2049	400.0		—		400.0
2.25% Series	Evergy Metro, Inc.	2030	400.0		—		400.0
Pollution Control Bonds
0.132% Series(b)	Evergy Kansas Central, Inc.	2032	45.0		45.0		—
0.132% Series(b)	Evergy Kansas Central, Inc.	2032	30.5		30.5		—
0.132% Series(b)	Evergy Kansas South, Inc.	2027	21.9		21.9		—
2.50% Series	Evergy Kansas South, Inc.	2031	50.0		50.0		—
0.132% Series(b)	Evergy Kansas South, Inc.	2032	14.5		14.5		—
0.132% Series(b)	Evergy Kansas South, Inc.	2032	10.0		10.0		—
0.167% Series 2007A and 2007B(b)	Evergy Metro, Inc.	2035	146.5		—		146.5
2.75% Series 2008	Evergy Metro, Inc.	2038	23.4		—		23.4
Senior Notes
3.15% Series(g)	Evergy Metro, Inc.	2023	300.0		—		300.0
3.65% Series(g)	Evergy Metro, Inc.	2025	350.0		—		350.0
6.05% Series (5.78% rate)(a)(g)	Evergy Metro, Inc.	2035	250.0		—		250.0
5.30% Series(g)	Evergy Metro, Inc.	2041	400.0		—		400.0
4.20% Series(g)	Evergy Metro, Inc.	2047	300.0		—		300.0
4.20% Series(g)	Evergy Metro, Inc.	2048	300.0		—		300.0
3.49% Series A(h)	Evergy Missouri West, Inc.	2025	36.0		—		—
4.06% Series B(h)	Evergy Missouri West, Inc.	2033	60.0		—		—
4.74% Series C(h)	Evergy Missouri West, Inc.	2043	150.0		—		—
3.74% Series(h)	Evergy Missouri West, Inc.	2022	100.0		—		—
2.86% Series A(h)	Evergy Missouri West, Inc.	2031	350.0		—		—
3.01% Series B(h)	Evergy Missouri West, Inc.	2033	75.0		—		—
3.21% Series C(h)	Evergy Missouri West, Inc.	2036	75.0		—		—
5.292% Series	Evergy, Inc.(f)	2022	287.5		—		—
2.45% Series	Evergy, Inc.	2024	800.0		—		—
2.90% Series (3.77% rate)(a)	Evergy, Inc.	2029	800.0		—		—
Medium Term Notes
7.33% Series(h)	Evergy Missouri West, Inc.	2023	3.0		—		—
7.17% Series(h)	Evergy Missouri West, Inc.	2023	7.0		—		—
Fair value adjustment(e)			97.9		—		—
Current maturities(c)			(389.3)		—		—
Unamortized debt discount and debt issuance costs			(80.5)		(42.7)		(24.4)
Total excluding current maturities(d)			$	9,297.9	$	3,934.2	$	2,925.0


December 31, 2020	Issuing Entity	Year Due	Evergy		Evergy Kansas Central		Evergy Metro
Mortgage Bonds			(millions)
3.25% Series	Evergy Kansas Central, Inc.	2025	$	250.0	$	250.0	$	—
2.55% Series	Evergy Kansas Central, Inc.	2026	350.0		350.0		—
3.10% Series	Evergy Kansas Central, Inc.	2027	300.0		300.0		—
4.125% Series	Evergy Kansas Central, Inc.	2042	550.0		550.0		—
4.10% Series	Evergy Kansas Central, Inc.	2043	430.0		430.0		—
4.625% Series	Evergy Kansas Central, Inc.	2043	250.0		250.0		—
4.25% Series	Evergy Kansas Central, Inc.	2045	300.0		300.0		—
3.25% Series	Evergy Kansas Central, Inc.	2049	300.0		300.0
3.45% Series	Evergy Kansas Central, Inc.	2050	500.0		500.0		—
6.15% Series	Evergy Kansas South, Inc.	2023	50.0		50.0		—
6.53% Series	Evergy Kansas South, Inc.	2037	175.0		175.0		—
6.64% Series	Evergy Kansas South, Inc.	2038	100.0		100.0		—
4.30% Series	Evergy Kansas South, Inc.	2044	250.0		250.0		—
2.95% EIRR bonds	Evergy Metro, Inc.	2023	79.5		—		79.5
4.125% Series	Evergy Metro, Inc.	2049	400.0		—		400.0
2.25% Series	Evergy Metro, Inc.	2030	400.0		—		400.0
9.44% Series(h)	Evergy Missouri West, Inc.	2021	1.1		—		—
Pollution Control Bonds
0.18% Series(b)	Evergy Kansas Central, Inc.	2032	45.0		45.0		—
0.18% Series(b)	Evergy Kansas Central, Inc.	2032	30.5		30.5		—
0.18% Series(b)	Evergy Kansas South, Inc.	2027	21.9		21.9		—
2.50% Series	Evergy Kansas South, Inc.	2031	50.0		50.0		—
0.18% Series(b)	Evergy Kansas South, Inc.	2032	14.5		14.5		—
0.18% Series(b)	Evergy Kansas South, Inc.	2032	10.0		10.0		—
0.20% Series 2007A and 2007B(b)	Evergy Metro, Inc.	2035	146.5		—		146.5
2.75% Series 2008	Evergy Metro, Inc.	2038	23.4		—		23.4
Senior Notes
3.15% Series(g)	Evergy Metro, Inc.	2023	300.0		—		300.0
3.65% Series(g)	Evergy Metro, Inc.	2025	350.0		—		350.0
6.05% Series (5.78% rate)(a)(g)	Evergy Metro, Inc.	2035	250.0		—		250.0
5.30% Series(g)	Evergy Metro, Inc.	2041	400.0		—		400.0
4.20% Series(g)	Evergy Metro, Inc.	2047	300.0		—		300.0
4.20% Series(g)	Evergy Metro, Inc.	2048	300.0		—		300.0
8.27% Series(h)	Evergy Missouri West, Inc.	2021	80.9		—		—
3.49% Series A	Evergy Missouri West, Inc.	2025	36.0		—		—
4.06% Series B	Evergy Missouri West, Inc.	2033	60.0		—		—
4.74% Series C	Evergy Missouri West, Inc.	2043	150.0		—		—
3.74% Series	Evergy Missouri West, Inc.	2022	100.0		—		—
4.85% Series	Evergy, Inc.(f)	2021	350.0		—		—
5.292% Series	Evergy, Inc.(f)	2022	287.5		—		—
2.45% Series	Evergy, Inc.	2024	800.0		—		—
2.90% Series (3.77% rate)(a)	Evergy, Inc.	2029	800.0		—		—
Medium Term Notes
7.33% Series(h)	Evergy Missouri West, Inc.	2023	3.0		—		—
7.17% Series(h)	Evergy Missouri West, Inc.	2023	7.0		—		—
Fair value adjustment(e)			110.4		—		—
Current maturities(c)			(436.4)		—		—
Unamortized debt discount and debt issuance costs			(84.9)		(45.4)		(26.4)
Total excluding current maturities(d)			$	9,190.9	$	3,931.5	$	2,923.0

(a)Rate after amortizing gains/losses recognized in OCI on settlements of interest rate hedging instruments.

(b)Variable rate.

(f)Originally issued by Great Plains Energy but assumed by Evergy, Inc. as part of the Great Plains Energy and Evergy Kansas Central merger.

(h)Unconditionally guaranteed by Evergy, Inc.

Schedule of Maturities of Long-Term Debt

Evergy's, Evergy Kansas Central's and Evergy Metro's long-term debt maturities for the next five years are detailed in the following table.


	2022		2023		2024		2025		2026
	(millions)
Evergy	$	387.5	$	439.5	$	800.0	$	636.0	$	350.0
Evergy Kansas Central	—		50.0		—		250.0		350.0
Evergy Metro	—		379.5		—		350.0		—

FAIR VALUE MEASUREMENTS (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of Carrying Value and Fair Value of Debt Instruments

The book value and fair value of the Evergy Companies' long-term debt and long-term debt of variable interest entities is summarized in the following table.



	December 31, 2021				December 31, 2020
	Book Value		Fair Value		Book Value		Fair Value
Long-term debt(a)	(millions)
Evergy(b)	$	9,687.2	$	10,758.5	$	9,627.3	$	11,274.2
Evergy Kansas Central	3,934.2		4,522.5		3,931.5		4,801.7
Evergy Metro	2,925.0		3,400.8		2,923.0		3,591.2
Long-term debt of variable interest entities(a)
Evergy	$	—	$	—	$	18.8	$	19.1
Evergy Kansas Central	—		—		18.8		19.1

(a) Includes current maturities.

Schedule of Fair Value of Assets and Liabilities

The following tables include the Evergy Companies' balances of financial assets and liabilities measured at fair value on a recurring basis.


Description	December 31, 2021			Level 1		Level 2			Level 3			NAV
Evergy Kansas Central		(millions)
Assets
Nuclear decommissioning trust(a)
Domestic equity funds		$	140.4	$	126.5		$	—		$	—		$	13.9
International equity funds		74.0		74.0			—			—			—
Core bond fund		58.1		58.1			—			—			—
High-yield bond fund		29.6		29.6			—			—			—
Emerging markets bond fund		18.0		18.0			—			—			—

Alternative investments fund		32.7		—			—			—			32.7
Real estate securities fund		15.2		—			—			—			15.2
Cash equivalents		0.4		0.4			—			—			—

Total nuclear decommissioning trust		368.4		306.6			—			—			61.8
Rabbi trust
Fixed income funds		19.6		19.6			—			—			—
Equity funds		9.5		9.5			—			—			—
Combination debt/equity/other fund		2.4		2.4			—			—			—
Cash equivalents		0.2		0.2			—			—			—
Total rabbi trust		31.7		31.7			—			—			—
Total		$	400.1	$	338.3		$	—		$	—		$	61.8
Evergy Metro
Assets
Nuclear decommissioning trust(a)
Equity securities		$	299.2	$	299.2		$	—		$	—		$	—
Debt securities
U.S. Treasury		46.1		46.1			—			—			—
U.S. Agency		0.4		—			0.4			—			—
State and local obligations		4.0		—			4.0			—			—
Corporate bonds		43.7		—			43.7			—			—
Foreign governments		0.1		—			0.1			—			—
Cash equivalents		6.8		6.8			—			—			—
Other		—		—			—			—			—
Total nuclear decommissioning trust		400.3		352.1			48.2			—			—
Self-insured health plan trust(b)
Equity securities		2.0		2.0			—			—			—
Debt securities		8.7		2.7			6.0			—			—
Cash and cash equivalents		1.8		1.8			—			—			—
Total self-insured health plan trust		12.5		6.5			6.0			—			—
Total		$	412.8	$	358.6		$	54.2		$	—		$	—
Other Evergy
Other Evergy investments
Equity securities(c)		$	31.4	$	—		$	31.4		$	—		$	—
Total other Evergy investments		31.4		—			31.4			—			—
Rabbi trusts
Core bond fund		12.5		12.5			—			—			—

Total rabbi trusts		12.5		12.5			—			—			—



Total		$	43.9	$	12.5		$	31.4		$	—		$	—
Evergy
Assets
Nuclear decommissioning trust(a)		$	768.7	$	658.7		$	48.2		$	—		$	61.8
Rabbi trusts		44.2		44.2			—			—			—
Self-insured health plan trust(b)		12.5		6.5			6.0			—			—
Other Evergy investments(c)		31.4		—			31.4			—			—
Total		$	856.8	$	709.4		$	85.6		$	—		$	61.8


Description	December 31, 2020			Level 1			Level 2			Level 3			NAV
Evergy Kansas Central		(millions)
Assets
Nuclear decommissioning trust(a)
Domestic equity funds		$	102.7		$	95.1		$	—		$	—		$	7.6
International equity funds		63.8			63.8			—			—			—
Core bond fund		40.6			40.6			—			—			—
High-yield bond fund		25.0			25.0			—			—			—
Emerging markets bond fund		21.0			21.0			—			—			—
Combination debt/equity/other fund		20.1			20.1			—			—			—
Alternative investments fund		23.2			—			—			—			23.2
Real estate securities fund		12.9			—			—			—			12.9
Cash equivalents		0.5			0.5			—			—			—
Total nuclear decommissioning trust		309.8			266.1			—			—			43.7
Rabbi trust
Core bond fund		25.6			—			—			—			25.6
Combination debt/equity/other fund		7.1			—			—			—			7.1

Total rabbi trust		32.7			—			—			—			32.7
Total		$	342.5		$	266.1		$	—		$	—		$	76.4
Evergy Metro
Assets
Nuclear decommissioning trust(a)
Equity securities		$	243.1		$	243.1		$	—		$	—		$	—
Debt securities
U.S. Treasury		47.7			47.7			—			—			—
U.S. Agency		0.5			—			0.5			—			—
State and local obligations		4.1			—			4.1			—			—
Corporate bonds		43.1			—			43.1			—			—
Foreign governments		0.1			—			0.1			—			—
Cash equivalents		3.2			3.2			—			—			—
Other		0.5			0.5			—			—			—
Total nuclear decommissioning trust		342.3			294.5			47.8			—			—
Self-insured health plan trust(b)
Equity securities		1.7			1.7			—			—			—
Debt securities		8.0			2.8			5.2			—			—
Cash and cash equivalents		3.5			3.5			—			—			—
Total self-insured health plan trust		13.2			8.0			5.2			—			—
Total		$	355.5		$	302.5		$	53.0		$	—		$	—
Other Evergy
Assets
Rabbi trusts
Fixed income fund		$	13.1		$	—		$	—		$	—		$	13.1
Cash and cash equivalents		0.5			0.5			—			—			—
Total rabbi trusts		$	13.6		$	0.5		$	—		$	—		$	13.1



Evergy
Assets
Nuclear decommissioning trust(a)		$	652.1		$	560.6		$	47.8		$	—		$	43.7
Rabbi trust		46.3			0.5			—			—			45.8
Self-insured health plan trust(b)		13.2			8.0			5.2			—			—
Total		$	711.6		$	569.1		$	53.0		$	—		$	89.5

(a)With the exception of investments measured at NAV, fair value is based on quoted market prices of the investments held by the trust and/or valuation models.

(c)Fair value is based on quoted market prices adjusted for a discount for lack of marketability based on a valuation model due to a restriction on the sale of the stock.

Schedule of Fair Value Investments, Entities that Calculate NAV

The following table provides additional information on these Evergy and Evergy Kansas Central investments.


	December 31, 2021				December 31, 2020				December 31, 2021
	Fair		Unfunded		Fair		Unfunded		Redemption	Length of
	Value		Commitments		Value		Commitments		Frequency	Settlement
Evergy Kansas Central	(millions)
Nuclear decommissioning trust:
Domestic equity funds	$	13.9	$	1.7	$	7.6	$	2.2	(a)	(a)
Alternative investments fund(b)	32.7		—		23.2		—		Quarterly	65 days
Real estate securities fund(b)	15.2		—		12.9		—		Quarterly	65 days
Total	$	61.8	$	1.7	$	43.7	$	2.2
Rabbi trust:
Core bond fund	$	—	$	—	$	25.6	$	—	(c)	(c)
Combination debt/equity/other fund	—		—		7.1		—		(c)	(c)
Total	$	—	$	—	$	32.7	$	—
Other Evergy
Rabbi trust:
Fixed income fund	$	—	$	—	$	13.1	$	—	(c)	(c)
Total Evergy investments at NAV	$	61.8	$	1.7	$	89.5	$	2.2

(b)There is a holdback on final redemptions.

(c)This investment can be redeemed immediately and is not subject to any restrictions on redemptions.

Schedule of Fair Value Recurring Gain (Loss) Included in Earnings

The following table summarizes the net unrealized gains (losses) for the Evergy Companies' nuclear decommissioning trusts and rabbi trusts.



		2021		2020		2019
Evergy	(millions)
Nuclear decommissioning trust - equity securities		$	101.8	$	45.5	74.0
Nuclear decommissioning trust - debt securities		(4.5)		5.3		5.1
Rabbi trusts - equity securities		(1.8)		(5.6)		3.1
Total		$	95.5	$	45.2	$	82.2
Evergy Kansas Central
Nuclear decommissioning trust - equity securities		$	50.5	$	21.9	33.3
Rabbi trust - equity securities		(1.4)		(6.1)		3.2
Total		$	49.1	$	15.8	$	36.5
Evergy Metro
Nuclear decommissioning trust - equity securities		$	51.3	$	23.6	40.7
Nuclear decommissioning trust - debt securities		(4.5)		5.3		5.1
Total		$	46.8	$	28.9	$	45.8

COMMITMENTS AND CONTINGENCIES (Tables)

12 Months Ended

Dec. 31, 2021

Commitments and Contingencies Disclosure [Abstract]

Schedule of Contractual Obligation


Evergy
	2022		2023		2024		2025		2026		After 2026			Total
Purchase commitments	(millions)
Fuel	$	403.1	$	183.5	$	130.2	$	100.4	$	106.7		$	221.1		$	1,145.0
Power	63.0		63.6		58.0		58.4		58.4			294.2			595.6

Total fuel and power commitments	$	466.1	$	247.1	$	188.2	$	158.8	$	165.1		$	515.3		$	1,740.6


Evergy Kansas Central
	2022		2023		2024		2025		2026		After 2026			Total
Purchase commitments	(millions)
Fuel	$	232.4	$	102.6	$	83.3	$	69.4	$	72.6		$	121.3		$	681.6
Power	0.9		0.9		0.9		0.9		0.9			3.6			8.1

Total fuel and power commitments	$	233.3	$	103.5	$	84.2	$	70.3	$	73.5		$	124.9		$	689.7


Evergy Metro
	2022		2023		2024		2025		2026		After 2026			Total
Purchase commitments	(millions)
Fuel	$	145.3	$	73.7	$	43.3	$	28.4	$	31.4		$	99.8		$	421.9
Power	35.1		35.3		29.2		29.2		29.2			166.9			324.9

Total fuel and power commitments	$	180.4	$	109.0	$	72.5	$	57.6	$	60.6		$	266.7		$	746.8

RELATED PARTY TRANSACTIONS AND RELATIONSHIPS (Tables)

12 Months Ended

Dec. 31, 2021

The operating expenses and capital costs billed for jointly-owned plants and shared services are detailed in the following table.



		2021		2020		2019
	(millions)
Evergy Kansas Central billings to Evergy Missouri West		$	32.5	$	37.6	$	24.9
Evergy Metro billings to Evergy Missouri West		142.1		168.7		172.8
Evergy Kansas Central billings to Evergy Metro		29.4		34.7		40.6
Evergy Metro billings to Evergy Kansas Central		134.7		130.8		154.9

The following table summarizes Evergy Kansas Central's and Evergy Metro's related party net receivables and payables.



	December 31
	2021		2020
Evergy Kansas Central	(millions)
Net receivable from (payable to) Evergy	$	(2.2)	$	0.1
Net payable to Evergy Metro	(14.5)		(21.7)
Net receivable from Evergy Missouri West	10.4		6.6

Evergy Metro
Net receivable from Evergy	$	8.7	$	15.7
Net receivable from Evergy Kansas Central	14.5		21.7
Net receivable from Evergy Missouri West	254.5		188.1

The following table summarizes Evergy Kansas Central's and Evergy Metro's income taxes receivable from (payable to) Evergy.



	December 31
	2021		2020
Evergy Kansas Central	(millions)
Income taxes receivable from Evergy	$	9.6	$	25.3

Evergy Metro
Income taxes receivable from (payable to) Evergy	$	(2.5)	$	3.2

VARIABLE INTEREST ENTITIES (Tables)

12 Months Ended

Dec. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Variable Interest Entities

The following table summarizes the assets and liabilities related to the VIE described above that are recorded on Evergy's and Evergy Kansas Central's consolidated balance sheets.


	December 31
	2021		2020
Assets:	(millions)
Property, plant and equipment of variable interest entities, net	$	147.8	$	154.9
Liabilities:
Current maturities of long-term debt of variable interest entities	$	—	$	18.8
Accrued interest(a)	—		0.1

(a)Included in accrued interest on Evergy's and Evergy Kansas Central's consolidated balance sheets.

- Definition

Tabular disclosure of the significant judgments and assumptions made in determining whether a variable interest (as defined) held by the entity requires the variable interest entity (VIE) (as defined) to be consolidated and (or) disclose information about its involvement with the VIE, individually or in aggregate (as applicable); the nature of restrictions, if any, on the consolidated VIE's assets and on the settlement of its liabilities reported by an entity in its statement of financial position, including the carrying amounts of such assets and liabilities; the nature of, and changes in, the risks associated with involvement in the VIE; how involvement with the VIE affects the entity's financial position, financial performance, and cash flows; the lack of recourse if creditors (or beneficial interest holders) of the consolidated VIE have no recourse to the general credit of the primary beneficiary (if applicable); the terms of arrangements, giving consideration to both explicit arrangements and implicit variable interests, if any, that could require the entity to provide financial support to the VIE, including events or circumstances that could expose the entity to a loss; the methodology used by the entity for determining whether or not it is the primary beneficiary of the variable interest entity; the significant factors considered and judgments made in determining that the power to direct the activities of a VIE that most significantly impact the VIE's economic performance are shared (as defined); the carrying amounts and classification of assets and liabilities of the VIE included in the statement of financial position; the entity's maximum exposure to loss, if any, as a result of its involvement with the VIE, including how the maximum exposure is determined and significant sources of the entity's exposure to the VIE; a comparison of the carrying amounts of the assets and liabilities and the entity's maximum exposure to loss; information about any liquidity arrangements, guarantees, and (or) other commitments by third parties that may affect the fair value or risk of the entity's variable interest in the VIE; whether or not the entity has provided financial support or other support (explicitly or implicitly) to the VIE that it was not previously contractually required to provide or whether the entity intends to provide that support, including the type and amount of the support and the primary reasons for providing the support; and supplemental information the entity determines necessary to provide.

+ References + Details

TAXES (Tables)

12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit)

Components of income tax expense are detailed in the following tables.


Evergy	2021		2020		2019
Current income taxes	(millions)
Federal	$	15.6	$	(26.8)	$	(39.5)
State	(0.4)		2.1		15.0
Total	15.2		(24.7)		(24.5)
Deferred income taxes
Federal	92.8		73.1		93.2
State	14.7		59.8		27.5
Total	107.5		132.9		120.7





Investment tax credit
Deferral	0.4		—		5.2
Amortization	(5.7)		(6.0)		(4.4)
Total	(5.3)		(6.0)		0.8
Income tax expense	$	117.4	$	102.2	$	97.0


Evergy Kansas Central	2021		2020		2019
Current income taxes	(millions)
Federal	$	53.3	$	14.5	$	37.9
State	(0.2)		(5.3)		2.6
Total	53.1		9.2		40.5
Deferred income taxes
Federal	3.8		(16.7)		(8.9)
State	(1.2)		168.1		18.4
Total	2.6		151.4		9.5




Investment tax credit
Deferral	0.3		—		5.2
Amortization	(4.3)		(4.8)		(3.1)
Total	(4.0)		(4.8)		2.1
Income tax expense	$	51.7	$	155.8	$	52.1


Evergy Metro	2021		2020		2019
Current income taxes	(millions)
Federal	$	39.2	$	(0.2)	$	43.9
State	3.2		10.8		22.4
Total	42.4		10.6		66.3
Deferred income taxes
Federal	6.5		29.8		(24.5)
State	4.8		(32.2)		(5.0)
Total	11.3		(2.4)		(29.5)




Investment tax credit

Amortization	(1.3)		(1.1)		(1.1)
Total	(1.3)		(1.1)		(1.1)
Income tax expense	$	52.4	$	7.1	$	35.7

Schedule of Effective Income Tax Rate Reconciliation

Effective income tax rates reflected in the financial statements and the reasons for their differences from the statutory federal rates are detailed in the following tables.


Evergy	2021		2020		2019
Federal statutory income tax	21.0	%	21.0	%	21.0	%
COLI policies	(1.0)		(1.6)		(1.8)
State income taxes	1.0		4.3		5.0
Flow through depreciation for plant-related differences	(5.4)		(5.3)		(4.5)
Federal tax credits	(2.8)		(4.6)		(4.9)
Non-controlling interest	(0.3)		(0.3)		(0.4)
AFUDC equity	(0.6)		(0.5)		(0.1)
Amortization of federal investment tax credits	(0.4)		(0.6)		(0.5)
Changes in uncertain tax positions, net	—		—		(0.2)
Federal or state tax rate change	—		1.9		—
Valuation allowance	—		(0.2)		(1.0)
Stock compensation	—		(0.1)		0.1
Officer compensation limitation	0.5		0.2		0.1
Other	(0.4)		(0.2)		(0.4)
Effective income tax rate	11.6	%	14.0	%	12.4	%


Evergy Kansas Central	2021		2020		2019
Federal statutory income tax	21.0	%	21.0	%	21.0	%
COLI policies	(1.7)		(2.8)		(3.3)
State income taxes	(0.4)		3.8		5.3
Flow through depreciation for plant-related differences	(3.0)		(0.1)		(0.1)
Federal tax credits	(5.0)		(7.1)		(7.4)
Non-controlling interest	(0.5)		(0.6)		(0.8)
AFUDC equity	(0.6)		(0.5)		(0.1)
Amortization of federal investment tax credits	(0.5)		(0.7)		(0.7)
Changes in uncertain tax positions, net	—		—		(0.4)
Federal or state tax rate change	—		27.8		—
Valuation allowance	—		—		(0.4)
Stock compensation	(0.1)		(0.1)		(0.1)
Officer compensation limitation	0.3		—		—
Other	(0.1)		(0.9)		(0.3)
Effective income tax rate	9.4	%	39.8	%	12.7	%


Evergy Metro	2021		2020		2019
Federal statutory income tax	21.0	%	21.0	%	21.0	%
COLI policies	(0.2)		(0.3)		(0.2)
State income taxes	1.7		4.9		4.7
Flow through depreciation for plant-related differences	(7.8)		(10.0)		(9.4)
Federal tax credits	(0.2)		(1.9)		(2.5)
AFUDC equity	(0.7)		(0.5)		(0.2)
Amortization of federal investment tax credits	(0.4)		(0.4)		(0.4)

Federal or state tax rate change	—		(10.5)		—

Stock compensation	—		(0.4)		—
Officer compensation limitation	0.9		0.4		0.3
Other	0.1		—		(1.0)
Effective income tax rate	14.4	%	2.3	%	12.3	%

Schedule of Deferred Income Tax Assets and Liabilities

The tax effects of major temporary differences resulting in deferred income tax assets (liabilities) in the consolidated balance sheets is in the following table.


	December 31
	2021						2020
	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Deferred tax assets:	(millions)
Tax credit carryforward	$	375.2	$	206.3	$	162.1	$	379.6	$	176.5	$	195.9
Income taxes refundable to customers, net	336.6		168.5		123.8		418.2		237.5		132.8
Deferred employee benefit costs	158.3		84.8		86.8		227.6		105.4		117.9
Net operating loss carryforward	40.2		—		—		51.0		—		0.2
Deferred state income taxes	146.9		101.0		38.6		145.9		101.7		37.8

Accrued liabilities	157.6		71.3		56.4		152.7		61.8		61.0
Other	200.0		100.6		59.6		181.0		91.4		44.8
Total deferred tax assets before valuation allowance	1,414.8		732.5		527.3		1,556.0		774.3		590.4
Valuation allowances	(12.8)		—		—		(14.4)		—		—
Total deferred tax assets, net	1,402.0		732.5		527.3		1,541.6		774.3		590.4
Deferred tax liabilities:
Plant-related	(2,701.1)		(1,308.7)		(996.7)		(2,693.7)		(1,341.2)		(972.1)
Deferred employee benefit costs	(96.8)		(52.9)		(43.5)		(171.4)		(75.6)		(76.3)
ARO regulatory assets	(133.7)		(53.9)		(49.9)		(136.7)		(49.9)		(54.3)
Acquisition premium	(43.9)		(43.9)		—		(46.9)		(46.9)		—
Other regulatory assets	(152.1)		(53.3)		(20.4)		(28.8)		(2.8)		(16.4)
Other	(136.3)		(87.7)		(22.9)		(128.9)		(82.4)		(30.1)
Total deferred tax liabilities	(3,263.9)		(1,600.4)		(1,133.4)		(3,206.4)		(1,598.8)		(1,149.2)
Net deferred income tax liabilities	$	(1,861.9)	$	(867.9)	$	(606.1)	$	(1,664.8)	$	(824.5)	$	(558.8)

Summary of Related Tax Benefit Amounts


	Amount of Benefit
Year of Origin	Evergy		Evergy Kansas Central		Evergy Metro
	(millions)


2004	0.1		—		—
2005	0.1		—		—
2006	0.1		—		—
2007	0.1		—		—
2009	38.2		0.2		37.9
2010	18.3		—		18.2
2011	13.3		—		13.2
2012	12.8		2.0		10.7
2013	24.3		11.3		12.9
2014	24.1		10.7		13.0
2015	24.7		10.9		13.2
2016	27.1		11.0		12.4
2017	43.9		35.1		8.2
2018	43.9		36.3		7.5
2019	37.7		30.9		6.7
2020	35.9		28.3		7.4
2021	29.0		28.0		0.8
	$	373.6	$	204.7	$	162.1

Summary of Operating Loss Carryforwards

The year of origin of Evergy's related tax benefit amounts for federal NOL carryforwards as of December 31, 2021 are detailed in the following table.


Year of Origin	Amount of Benefit
	(millions)




2005	$	1.9
2006	31.7
	$	33.6

LEASES (Tables)

12 Months Ended

Dec. 31, 2021

Leases [Abstract]

Schedule of Lease Expense

The Evergy Companies’ lease expense is detailed in the following table.


Evergy	2021		2020		2019
Finance lease costs	(millions)
Amortization of right-of-use assets	$	5.1	$	7.7	$	5.2
Interest on lease liabilities	2.5		3.1		2.9
Operating lease costs	21.8		22.9		23.8
Short-term lease costs	5.9		2.1		4.0
Variable lease costs for renewable purchase power agreements	280.3		296.6		313.0
Total lease costs	$	315.6	$	332.4	$	348.9


Evergy Kansas Central	2021		2020		2019
Finance lease costs	(millions)
Amortization of right-of-use assets	$	4.5	$	7.2	$	5.0
Interest on lease liabilities	2.4		2.8		2.7
Operating lease costs	12.9		11.9		13.2
Short-term lease costs	1.8		0.5		1.2
Variable lease costs for renewable purchase power agreements	145.8		135.6		130.8
Total lease costs	$	167.4	$	158.0	$	152.9


Evergy Metro	2021		2020		2019
Finance lease costs	(millions)
Amortization of right-of-use assets	$	0.4	$	0.3	$	0.1
Interest on lease liabilities	0.1		0.1		0.1
Operating lease costs	9.0		9.3		9.2
Short-term lease costs	3.0		1.5		2.6
Variable lease costs for renewable purchase power agreements	101.0		112.2		129.2
Total lease costs	$	113.5	$	123.4	$	141.2

Supplemental cash flow information related to the Evergy Companies' leases is detailed in the following table.


Evergy	2021		2020		2019
Cash paid for amounts included in the measurement of lease liabilities:	(millions)
Operating cash flows from operating leases	$	20.7	$	22.2	$	21.7
Operating cash flows from finance leases	2.6		2.8		2.8
Financing cash flows from finance leases	5.3		5.6		5.0
Right-of-use assets obtained in exchange for new operating lease liabilities	16.4		6.9		10.4
Right-of-use assets obtained in exchange for new finance lease liabilities	1.4		5.6		8.3


Evergy Kansas Central	2021		2020		2019
Cash paid for amounts included in the measurement of lease liabilities:	(millions)
Operating cash flows from operating leases	$	11.8	$	12.9	$	13.7
Operating cash flows from finance leases	2.4		2.5		2.6
Financing cash flows from finance leases	4.7		5.1		4.8
Right-of-use assets obtained in exchange for new operating lease liabilities	7.1		6.6		6.1
Right-of-use assets obtained in exchange for new finance lease liabilities	1.4		4.0		8.3


Evergy Metro	2021		2020		2019
Cash paid for amounts included in the measurement of lease liabilities:	(millions)
Operating cash flows from operating leases	$	10.4	$	10.8	$	9.9
Operating cash flows from finance leases	0.1		0.1		0.1
Financing cash flows from finance leases	0.5		0.4		0.1
Right-of-use assets obtained in exchange for new operating lease liabilities	9.3		0.3		2.4
Right-of-use assets obtained in exchange for new finance lease liabilities	—		1.6		—

Schedule of Payments for Finance Leases

Payments and other supplemental information for finance leases as of December 31, 2021, are detailed in the following table.


	Evergy			Evergy Kansas Central			Evergy Metro
	(millions)
2022	$	7.8		$	7.1		$	0.6
2023	6.7			5.9			0.6
2024	5.5			4.7			0.6
2025	4.7			4.2			0.3
2026	4.4			3.9			0.2
After 2026	38.5			37.8			0.3
Total finance lease payments	67.6			63.6			2.6
Amounts representing imputed interest	(21.3)			(20.6)			(0.4)
Present value of lease payments	46.3			43.0			2.2
Less: current portion	(5.4)			(4.9)			(0.5)
Total long-term obligations under finance leases	$	40.9		$	38.1		$	1.7

Right-of-use assets under finance leases included in property, plant and equipment, net on the consolidated balance sheets	$	310.3		$	50.6		$	2.2

Weighted-average remaining lease term (years)	13.3			13.9			5.0
Weighted-average discount rate	5.6		%	5.6		%	5.1		%

Schedule of Lease Payments for Operating Leases

Lease payments and other supplemental information for operating leases as of December 31, 2021, are detailed in the following table.


	Evergy			Evergy Kansas Central			Evergy Metro
	(millions)
2022	$	18.8		$	9.4		$	9.2
2023	15.3			6.5			8.6
2024	12.5			4.3			7.9
2025	8.5			2.2			6.4
2026	5.9			0.7			5.4
After 2026	30.3			0.1			30.3
Total operating lease payments	91.3			23.2			67.8
Amounts representing imputed interest	(7.3)			(1.0)			(6.3)
Present value of lease payments	84.0			22.2			61.5
Less: current portion	(17.1)			(9.0)			(8.0)
Total long-term obligations under operating leases	$	66.9		$	13.2		$	53.5

Right-of-use assets under operating leases included in other assets on the consolidated balance sheets	$	90.7		$	29.0		$	46.7

Weighted-average remaining lease term (years)	7.6			3.0			9.3
Weighted-average discount rate	2.2		%	2.4		%	2.1		%

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Organization (Details) customer in Millions, $ in Millions			1 Months Ended	12 Months Ended
	Dec. 31, 2021 USD ($) MW	Oct. 01, 2021 USD ($)	Feb. 28, 2021 USD ($)	Dec. 31, 2021 subsidiary kilovolt_line customer mi MW
Summary Of Accounting Policies [Line Items]
Transmission line length \| mi				108
Transmission line electrical potential \| kilovolt_line				345
Owned generating capacity and renewable purchased power \| MW	15,400			15,400
Number of customers served \| customer				1.6
Increase of Natural Gas and Purchased Power Costs, Net Increase in Wholesale Revenues			$ (64.8)
Increase of Energy Marketing Margins			$ 94.5
Transource Energy, LLC
Summary Of Accounting Policies [Line Items]
Ownership percentage	13.50%			13.50%
Prairie Wind Transmission, LLC
Summary Of Accounting Policies [Line Items]
Ownership percentage	50.00%			50.00%
Early-Stage Energy Solution Company
Summary Of Accounting Policies [Line Items]
Unrealized Gain on Investments	$ 27.7
Initial Investment On Equity Investment		$ 3.7
Evergy Kansas South Inc
Summary Of Accounting Policies [Line Items]
Number of active wholly owned subsidiaries \| subsidiary				1
AEP Transmission Holding Company, LLC \| Transource Energy, LLC
Summary Of Accounting Policies [Line Items]
Ownership interest	86.50%			86.50%

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fuel Inventory and Supplies (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Inventory [Line Items]
Fuel inventory	$ 62.0	$ 44.9
Supplies	149.0	125.5
Fuel inventory and supplies	$ 211.0	$ 170.4

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Allowance For Funds Used During Construction (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
AFUDC borrowed funds	$ 6.0	$ 6.0	$ 4.3
AFUDC equity funds	12.6	8.0	2.2
Total	$ 18.6	$ 14.0	$ 6.5
Public utilities, allowance for funds used during construction, rate	2.60%	3.50%	3.70%

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property, Plant and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Depreciation rates average	3.00%
Regulatory assets	$ 497.0	$ 615.5
Depreciation expense reflected in retail rates	$ 9.0
Minimum
Property, Plant and Equipment [Line Items]
Generating facilities	20 years
Transmission facilities	15 years
Distribution facilities	8 years
Other	5 years
Maximum
Property, Plant and Equipment [Line Items]
Generating facilities	60 years
Transmission facilities	70 years
Distribution facilities	55 years
Other	50 years
Retired Generation Facilities
Property, Plant and Equipment [Line Items]
Regulatory assets	$ 0.0	$ 0.0

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Corporate-Owned Life Insurance (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Cash surrender value of policies	$ 1,363.0	$ 1,369.6
Borrowings against policies	(1,232.3)	(1,237.6)
Corporate-owned life insurance, net	$ 130.7	$ 132.0

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Other Income (Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other Income Expense Net [Line Items]
Non-service cost component of net benefit cost	$ (26.7)	$ (24.2)	$ (20.9)
Other	(2.7)	(1.3)	(0.5)
Other expense	$ (29.4)	$ (25.5)	$ (21.4)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income
Net income	$ 312.3	$ 298.7	$ 255.2
Less: Net income attributable to noncontrolling interests	12.2	11.7	15.7
Net income attributable to Evergy, Inc.	$ 312.3	$ 298.7	$ 255.2
Common Shares Outstanding
Weighted average number of common shares outstanding - basic (in shares)	229.0	227.2	239.5
Add: effect of dilutive securities (in shares)	0.6	0.3	0.4
Diluted average number of common shares outstanding (in shares)	229.6	227.5	239.9
Basic earnings per common share (in dollars per share)	$ 3.84	$ 2.72	$ 2.80
Diluted EPS (in dollars per share)	$ 3.83	$ 2.72	$ 2.79

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Antidilutive Securities (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
RSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	0	127,884	785

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash paid for (received from):
Interest, net of amount capitalized	$ 110.8	$ 109.9	$ 118.4
Income taxes, net of refunds	36.6	4.8	77.0
Non-cash investing transactions:
Property, plant and equipment additions (reductions)	102.2	192.5	80.7
Non-cash financing transactions:
Issuance of stock for compensation and reinvested dividends	0.7	0.9	(0.3)
Variable Interest Entities
Cash paid for (received from):
Interest of VIEs	$ 0.2	$ 0.8	$ 1.6

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
	Feb. 02, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Feb. 01, 2022
Dividends Payable [Line Items]
Dividends declared on common stock (in dollars per share)		$ 2.178	$ 2.05	$ 1.93
Subsequent Event
Dividends Payable [Line Items]
Dividends Payable					$ 25.0
Common Stock \| Subsequent Event
Dividends Payable [Line Items]
Dividends declared on common stock (in dollars per share)	$ 0.5725

REVENUE (Details) - USD ($) $ in Millions	12 Months Ended
REVENUE (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 1,799.7	$ 1,623.8	$ 1,742.9
Other	114.0	81.8	63.6
Revenues	1,913.7	1,705.6	1,806.5
Residential
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	691.9	714.7	712.4
Commercial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	713.3	717.1	786.1
Industrial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	122.0	128.8	136.9
Other retail
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	9.2	11.7	16.3
Total electric retail
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,536.4	1,572.3	1,651.7
Wholesale
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	242.6	35.0	70.9
Transmission
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	17.1	13.9	17.5
Industrial steam and other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 3.6	$ 2.6	$ 2.8

RECEIVABLES (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables	$ 15.7	$ 21.9
Allowance for credit losses	(13.3)	(8.1)	$ (4.6)
Total	31.0	45.0
Customer accounts receivable \| Billed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customer accounts receivable	2.7	3.3
Customer accounts receivable \| Unbilled
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customer accounts receivable	$ 25.9	$ 27.9

RECEIVABLES - Allowance for Credit Loses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance January 1	$ 8.1	$ 4.6
Credit loss expense	10.5	9.0
Write-offs	(10.6)	(12.4)
Recoveries of prior write-offs	5.3	6.9
Ending balance December 31	$ 13.3	$ 8.1

RECEIVABLES - Other Receivables (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables, contracts with customers	$ 0.5	$ 6.9

RECEIVABLES - Pledged as Collateral (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable pledged as collateral	$ 116.0	$ 130.0

RATE MATTERS AND REGULATION - Narrative (Details) $ in Millions	1 Months Ended						12 Months Ended
	Jan. 31, 2022 USD ($)	Sep. 30, 2021 MW	Jul. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)	May 31, 2021 USD ($)	Apr. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Regulatory Proceedings [Line Items]
Regulatory assets							$ 497.0	$ 615.5
Regulatory liabilities							1,008.8	907.4
Revenues probable of refund
Regulatory Proceedings [Line Items]
Regulatory liabilities							0.0	0.0
Purchase power agreement
Regulatory Proceedings [Line Items]
Regulatory liabilities							$ 0.0	0.0
Regulatory Liability, Amortization Period							5 years
Fuel recovery mechanisms
Regulatory Proceedings [Line Items]
Regulatory liabilities							$ 6.5	0.0
Regulatory Liability, Amortization Period							1 year
February 2021 winter weather event
Regulatory Proceedings [Line Items]
Regulatory liabilities							$ 65.1	0.0
Pension and post-retirement costs
Regulatory Proceedings [Line Items]
Regulatory assets							213.3	359.9
Remaining Amounts of Regulatory Assets for which No Return on Investment During Recovery Period is Provided							179.0
Regulatory asset representing differences between pension and post retirement costs for GAAP and for ratemaking							123.3
February 2021 winter weather event
Regulatory Proceedings [Line Items]
Regulatory assets							0.0	0.0
Analog meter unrecovered investment
Regulatory Proceedings [Line Items]
Regulatory assets							0.0	0.0
Remaining Amounts of Regulatory Assets for which No Return on Investment During Recovery Period is Provided							$ 10.1
Regulatory Asset, Amortization Period							5 years
Deferred customer programs
Regulatory Proceedings [Line Items]
Regulatory assets							$ 7.8	8.6
Remaining Amounts of Regulatory Assets for which No Return on Investment During Recovery Period is Provided							7.8
Kansas property tax surcharge
Regulatory Proceedings [Line Items]
Regulatory assets							$ 8.0	5.2
Regulatory Asset, Amortization Period							1 year
Fuel recovery mechanisms
Regulatory Proceedings [Line Items]
Regulatory assets							$ 19.8	$ 17.7
Regulatory Asset, Amortization Period							1 year
Missouri Public Service Commission
Regulatory Proceedings [Line Items]
Public Utilities, Recovery Mechanism Percent for Fuel Cost							0.95
Public Utilities, Recovery Mechanism's Sharing Percentage for Fuel Cost							0.05
La Cygne Station
Regulatory Proceedings [Line Items]
VIE ownership percentage							50.00%
Transmission delivery charge \| Kansas Corporation Commission
Regulatory Proceedings [Line Items]
Annual revenue increase (decrease) approved					$ (2.4)	$ 37.9
2018 Rate Case Proceedings \| Kansas Corporation Commission
Regulatory Proceedings [Line Items]
Refund percent on earnings over approved return on equity							0.50
Approved return on equity, percentage							9.30%
Estimated refund on earnings over approved return on equity							$ 2.0
2018 MPSC OPC MECG Petition
Regulatory Proceedings [Line Items]
Estimated loss contingency portion not accrued (up to)							50.0
2018 MPSC OPC MECG Petition \| Revenues probable of refund
Regulatory Proceedings [Line Items]
Regulatory liabilities							29.3
FERC 2022 TFR Proceeding \| Federal Energy Regulatory Commission
Regulatory Proceedings [Line Items]
Annual transmissions revenue estimated amount of increase (decrease) over prior year							18.1
FERC 2021 TFR Proceeding \| Federal Energy Regulatory Commission
Regulatory Proceedings [Line Items]
Annual transmissions revenue estimated amount of increase (decrease) over prior year							(3.9)
FERC 2020 TFR Proceeding \| Federal Energy Regulatory Commission
Regulatory Proceedings [Line Items]
Annual transmissions revenue estimated amount of increase (decrease) over prior year							(1.7)
2021 KCC Winter Weather AAO
Regulatory Proceedings [Line Items]
Public Utilities, Requested Refund Increase (Decrease), Amount			$ (6.0)
2021 KCC Winter Weather AAO \| February 2021 winter weather event
Regulatory Proceedings [Line Items]
Regulatory liabilities							39.5
2021 KCC Winter Weather AAO \| February 2021 winter weather event
Regulatory Proceedings [Line Items]
Regulatory assets							121.5
2021 MPSC Winter Weather
Regulatory Proceedings [Line Items]
Public Utilities, Requested Refund Increase (Decrease), Amount				$ (5.0)
Public Utilities Requested Increase of Recovery				$ 15.0
2021 MPSC Winter Weather \| February 2021 winter weather event
Regulatory Proceedings [Line Items]
Regulatory liabilities							25.6
2021 MPSC Winter Weather \| February 2021 winter weather event
Regulatory Proceedings [Line Items]
Regulatory assets							$ 281.6
Utility Financing and Securitization Act - KS
Regulatory Proceedings [Line Items]
Planned Capacity of Investment in Renewable Generation \| MW		190
Subsequent Event \| 2022 Rate case proceedings
Regulatory Proceedings [Line Items]
Return on equity, requested	10.00%
Annual revenue increase (decrease), requested, not including rebasing fuel, purchased power expense and/or property tax expense	$ 27.7
Rate-making equity ratio, requested	51.81%
Annual revenue increase (decrease) related to rebasing, property tax and credit loss expense, storm reserve and return on unrecovered investment	$ 32.1

RATE MATTERS AND REGULATION - Regulatory Matters Asset (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Regulatory Assets [Line Items]
Regulatory Assets	$ 497.0	$ 615.5
Less: current portion	(86.3)	(82.0)
Total noncurrent regulatory assets	410.7	533.5
Pension and post-retirement costs
Regulatory Assets [Line Items]
Regulatory Assets	213.3	359.9
Debt reacquisition costs
Regulatory Assets [Line Items]
Regulatory Assets	6.7	6.8
Debt fair value adjustment
Regulatory Assets [Line Items]
Regulatory Assets	0.0	0.0
Asset retirement obligations fair value adjustment
Regulatory Assets [Line Items]
Regulatory Assets	0.0	0.0
Depreciation
Regulatory Assets [Line Items]
Regulatory Assets	27.0	9.4
Cost of removal
Regulatory Assets [Line Items]
Regulatory Assets	90.2	57.7
Asset retirement obligations
Regulatory Assets [Line Items]
Regulatory Assets	49.1	84.0
Analog meter unrecovered investment
Regulatory Assets [Line Items]
Regulatory Assets	0.0	0.0
Treasury yield hedges
Regulatory Assets [Line Items]
Regulatory Assets	0.0	0.0
Iatan No. 1 and common facilities
Regulatory Assets [Line Items]
Regulatory Assets	2.7	2.8
Iatan No. 2 construction accounting costs
Regulatory Assets [Line Items]
Regulatory Assets	12.4	12.7
Kansas property tax surcharge
Regulatory Assets [Line Items]
Regulatory Assets	8.0	5.2
Disallowed plant costs
Regulatory Assets [Line Items]
Regulatory Assets	0.0	0.0
La Cygne environmental costs
Regulatory Assets [Line Items]
Regulatory Assets	2.2	2.3
Deferred customer programs
Regulatory Assets [Line Items]
Regulatory Assets	7.8	8.6
Fuel recovery mechanisms
Regulatory Assets [Line Items]
Regulatory Assets	19.8	17.7
February 2021 winter weather event
Regulatory Assets [Line Items]
Regulatory Assets	0.0	0.0
Solar rebates
Regulatory Assets [Line Items]
Regulatory Assets	0.0	1.5
Wolf Creek outage
Regulatory Assets [Line Items]
Regulatory Assets	10.2	5.0
Pension and other post-retirement benefit non-service costs
Regulatory Assets [Line Items]
Regulatory Assets	29.6	23.4
Retired generation facilities
Regulatory Assets [Line Items]
Regulatory Assets	0.0	0.0
Merger transition costs
Regulatory Assets [Line Items]
Regulatory Assets	12.1	13.9
Other regulatory liabilities
Regulatory Assets [Line Items]
Regulatory Assets	$ 5.9	$ 4.6

RATE MATTERS AND REGULATION - Regulatory Matters Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Regulatory Liabilities [Line Items]
Regulatory liabilities	$ 1,008.8	$ 907.4
Less: current portion	(54.6)	(8.0)
Total noncurrent regulatory liabilities	954.2	899.4
Taxes refundable through future rates
Regulatory Liabilities [Line Items]
Regulatory liabilities	616.1	650.2
Deferred regulatory gain from sale leaseback
Regulatory Liabilities [Line Items]
Regulatory liabilities	0.0	0.0
Emission allowances
Regulatory Liabilities [Line Items]
Regulatory liabilities	42.1	46.1
Nuclear decommissioning
Regulatory Liabilities [Line Items]
Regulatory liabilities	224.4	181.5
Pension and post-retirement costs
Regulatory Liabilities [Line Items]
Regulatory liabilities	15.9	13.1
Jurisdictional allowance for funds used during construction
Regulatory Liabilities [Line Items]
Regulatory liabilities	1.7	1.7
La Cygne leasehold dismantling costs
Regulatory Liabilities [Line Items]
Regulatory liabilities	0.0	0.0
Cost of removal
Regulatory Liabilities [Line Items]
Regulatory liabilities	0.0	0.0
Kansas tax credits
Regulatory Liabilities [Line Items]
Regulatory liabilities	0.0	0.0
Purchase power agreement
Regulatory Liabilities [Line Items]
Regulatory liabilities	0.0	0.0
Fuel recovery mechanisms
Regulatory Liabilities [Line Items]
Regulatory liabilities	6.5	0.0
February 2021 winter weather event
Regulatory Liabilities [Line Items]
Regulatory liabilities	65.1	0.0
Sibley AAO
Regulatory Liabilities [Line Items]
Regulatory liabilities	0.0	0.0
Other regulatory liabilities
Regulatory Liabilities [Line Items]
Regulatory liabilities	$ 37.0	$ 14.8

GOODWILL (Details) $ in Millions	12 Months Ended
GOODWILL (Details) $ in Millions	Dec. 31, 2021 USD ($) reporting_unit	Dec. 31, 2020 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill \| $	$ 2,336.6	$ 2,336.6
Number of reporting units \| reporting_unit	1

ASSET RETIREMENT OBLIGATIONS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2021
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Beginning balance January 1	$ 378.9	$ 253.6
Revision in timing and/or estimates	9.5	118.4
Settlements	(24.4)	(7.5)
Accretion	17.0	14.4
Ending balance	381.0	378.9
Less: current portion	(11.0)	(21.2)
Asset retirement obligations	$ 370.0	$ 357.7
Wolf Creek Unit
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Jointly owned utility plant, proportionate ownership share			47.00%	47.00%

ASSET RETIREMENT OBLIGATIONS - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)
Jointly Owned Utility Plant Interests [Line Items]
Increase to ARO to decommission Wolf Creek resulting from study	$ 118.4

PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Electric plant in service	$ 11,656.9	$ 11,161.8
Electric plant acquisition adjustment	0.0	0.0
Accumulated depreciation	(4,733.7)	(4,532.7)
Plant in service	6,923.2	6,629.1
Construction work in progress	475.3	433.9
Nuclear fuel, net	76.4	78.2
Plant to be retired, net	0.0	0.0
Property, plant and equipment, net	10,548.9	10,193.6
Variable Interest Entities
Property, Plant and Equipment [Line Items]
Electric plant in service	392.1	392.1
Accumulated depreciation	(244.3)	(237.2)
Property, plant and equipment, net	$ 147.8	$ 154.9

PROPERTY, PLANT AND EQUIPMENT - Depreciation Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 255.9	$ 269.5	$ 262.7
Variable Interest Entities
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 7.1	$ 7.1	$ 7.1

JOINTLY-OWNED ELECTRIC UTILITY PLANTS (Details) $ in Millions	Dec. 31, 2021 USD ($)	Dec. 31, 2021	Dec. 31, 2021 MW	Dec. 31, 2021 Rate	Dec. 31, 2020 USD ($)
Jointly Owned Utility Plant Interests [Line Items]
Nuclear fuel, net	$ 76.4				$ 78.2
Wolf Creek Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share		47.00%		47.00%
Electric plant in service	2,058.9
Accumulated depreciation	1,048.0
Nuclear fuel, net	76.4
Construction work in progress	103.8
Accredited capacity \| MW			554
La Cygne Units
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate				50.00%
Electric plant in service	1,171.7
Accumulated depreciation	340.8
Nuclear fuel, net	0.0
Construction work in progress	23.6
Accredited capacity \| MW			713
Iatan No. 1 Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate				70.00%
Electric plant in service	594.8
Accumulated depreciation	205.3
Nuclear fuel, net	0.0
Construction work in progress	3.6
Accredited capacity \| MW			492
Iatan No. 2 Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate				55.00%
Electric plant in service	1,066.4
Accumulated depreciation	412.5
Nuclear fuel, net	0.0
Construction work in progress	6.1
Accredited capacity \| MW			482
Iatan Common
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate				61.00%
Electric plant in service	399.6
Accumulated depreciation	103.3
Nuclear fuel, net	0.0
Construction work in progress	5.5
Jeffrey Energy Center
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate				92.00%
Electric plant in service	2,307.6
Accumulated depreciation	944.5
Nuclear fuel, net	0.0
Construction work in progress	44.9
Accredited capacity \| MW			2,016
State Line
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share \| Rate				40.00%
Electric plant in service	115.0
Accumulated depreciation	85.2
Nuclear fuel, net	0.0
Construction work in progress	$ 25.5
Accredited capacity \| MW			200
Subsidiaries \| La Cygne Unit 2
Jointly Owned Utility Plant Interests [Line Items]
Leasehold interest percentage		50.00%

PENSION PLANS AND POST-RETIREMENT BENEFITS - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2021	Dec. 31, 2021 Rate
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Settlement and special termination benefits	$ 13.7	$ 0.0	$ 0.0
Non-qualified benefit obligations	25.4	27.0
Funded by trusts containing assets	31.7	$ 32.7
Contributions to plans remainder of year	62.3
Defined benefit plan basis point change in discount rate		70
Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Settlement and special termination benefits	0.0	$ 0.0	$ 0.0
Contributions to plans remainder of year	$ 1.7
Wolf Creek
Defined Benefit Plan Disclosure [Line Items]
Jointly owned utility plant, proportionate ownership share				47.00%	47.00%

PENSION PLANS AND POST-RETIREMENT BENEFITS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension Benefits
Components of net periodic benefit costs
Defined benefit plan, benefit obligation, beginning of the year	$ 1,446.5	$ 1,371.4
Service cost	53.5	51.8	$ 50.1
Interest cost	42.5	49.1	53.3
Contribution by participants	0.0	0.0
Plan amendments		(3.9)
Actuarial gain (loss)	(68.3)	144.8
Benefits paid	(37.5)	(99.0)
Settlements	(157.8)	(62.9)
Other	(5.4)	(4.8)
Defined benefit plan, benefit obligation, end of the year	1,273.5	1,446.5	1,371.4
Change in plan assets
Fair value of plan assets, beginning of the year	912.1	890.7
Actual return on plan assets	62.1	110.2
Contributions by employer and participants	102.2	77.6
Benefits paid	(37.1)	(98.7)
Settlements	(154.9)	(62.9)
Other	(5.4)	(4.8)
Fair value of plan assets, end of the year	879.0	912.1	890.7
Funded status at end of year	(394.5)	(534.4)
Amounts recognized in the consolidated balance sheets
Non-current asset	0.0	0.0
Current pension and other post-retirement liability	(0.7)	(0.8)
Noncurrent pension liability and other post-retirement liability	(393.8)	(533.6)
Net amount recognized before regulatory treatment	(394.5)	(534.4)
Accumulated OCI or regulatory asset/liability	84.6	216.9
Net amount recognized at December 31, 2021	(309.9)	(317.5)
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Accumulated OCI or regulatory asset/liability	84.6	216.9
Post-Retirement Benefits
Components of net periodic benefit costs
Defined benefit plan, benefit obligation, beginning of the year	133.6	125.6
Service cost	1.6	1.6	1.4
Interest cost	3.8	4.4	4.9
Contribution by participants	7.6	7.5
Plan amendments		0.5
Actuarial gain (loss)	(7.8)	8.6
Benefits paid	(14.3)	(14.6)
Settlements	0.0	0.0
Other	0.0	0.0
Defined benefit plan, benefit obligation, end of the year	124.5	133.6	125.6
Change in plan assets
Fair value of plan assets, beginning of the year	122.5	119.4
Actual return on plan assets	(1.3)	7.0
Contributions by employer and participants	10.1	9.6
Benefits paid	(13.0)	(13.5)
Settlements	0.0	0.0
Other	0.0	0.0
Fair value of plan assets, end of the year	118.3	122.5	$ 119.4
Funded status at end of year	(6.2)	(11.1)
Amounts recognized in the consolidated balance sheets
Non-current asset	21.5	21.3
Current pension and other post-retirement liability	(0.6)	(0.9)
Noncurrent pension liability and other post-retirement liability	(27.1)	(31.5)
Net amount recognized before regulatory treatment	(6.2)	(11.1)
Accumulated OCI or regulatory asset/liability	(10.5)	(7.7)
Net amount recognized at December 31, 2021	(16.7)	(18.8)
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Accumulated OCI or regulatory asset/liability	(10.5)	(7.7)
Actuarial (gain) loss \| Pension Benefits
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Actuarial (gain) loss	86.4	218.6
Actuarial (gain) loss \| Post-Retirement Benefits
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Actuarial (gain) loss	(3.8)	0.0
Prior service cost \| Pension Benefits
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Prior service cost	(1.8)	(1.7)
Prior service cost \| Post-Retirement Benefits
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Prior service cost	$ (6.7)	$ (7.7)

PENSION PLANS AND POST-RETIREMENT BENEFITS PENSION PLANS AND POST-RETIREMENT BENEFITS - Schedule of Components of Net Periodic Benefit Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other changes in plan assets and benefit obligations recognized in OCI or regulatory assets/liabilities
Total recognized in OCI or regulatory asset/liability	$ 0.3	$ 0.2	$ (0.7)
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	53.5	51.8	50.1
Interest cost	42.5	49.1	53.3
Expected return on plan assets	(55.7)	(54.7)	(48.9)
Prior service cost	0.0	0.8	0.9
Recognized net actuarial (gain) loss	43.8	45.7	49.8
Settlement and special termination benefits	13.7	0.0	0.0
Net periodic benefit costs before regulatory adjustment and intercompany allocations	97.8	107.0	128.2
Regulatory adjustment	4.2	(11.6)	(19.2)
Intercompany allocations	(25.9)	(22.6)	(34.4)
Net periodic benefit costs (income)	76.1	72.8	74.6
Other changes in plan assets and benefit obligations recognized in OCI or regulatory assets/liabilities
Total recognized in OCI or regulatory asset/liability	(132.3)	24.6	(37.8)
Total recognized in net periodic benefit costs and OCI or regulatory asset/liability	(56.2)	97.4	36.8
Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	1.6	1.6	1.4
Interest cost	3.8	4.4	4.9
Expected return on plan assets	(2.6)	(2.7)	(3.3)
Prior service cost	(1.0)	0.0	0.0
Recognized net actuarial (gain) loss	(0.1)	(0.6)	(1.4)
Settlement and special termination benefits	0.0	0.0	0.0
Net periodic benefit costs before regulatory adjustment and intercompany allocations	1.7	2.7	1.6
Regulatory adjustment	0.4	(0.2)	0.4
Intercompany allocations	(0.4)	(0.3)	(0.4)
Net periodic benefit costs (income)	1.7	2.2	1.6
Other changes in plan assets and benefit obligations recognized in OCI or regulatory assets/liabilities
Total recognized in OCI or regulatory asset/liability	(2.8)	5.3	6.1
Total recognized in net periodic benefit costs and OCI or regulatory asset/liability	(1.1)	7.5	7.7
Actuarial (gain) loss \| Pension Benefits
Other changes in plan assets and benefit obligations recognized in OCI or regulatory assets/liabilities
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(88.4)	89.3	35.9
Amounts reclassified from accumulated other comprehensive loss	(43.9)	(60.0)	(72.8)
Actuarial (gain) loss \| Post-Retirement Benefits
Other changes in plan assets and benefit obligations recognized in OCI or regulatory assets/liabilities
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(3.9)	4.3	4.7
Amounts reclassified from accumulated other comprehensive loss	0.1	0.6	1.4
Prior service cost \| Pension Benefits
Other changes in plan assets and benefit obligations recognized in OCI or regulatory assets/liabilities
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		(3.9)
Amounts reclassified from accumulated other comprehensive loss	0.0	(0.8)	(0.9)
Prior service cost \| Post-Retirement Benefits
Other changes in plan assets and benefit obligations recognized in OCI or regulatory assets/liabilities
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		0.4
Amounts reclassified from accumulated other comprehensive loss	$ 1.0	$ 0.0	$ 0.0

PENSION PLANS AND POST-RETIREMENT BENEFITS - APBO (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
ABO for all defined benefit pension plans	$ 1,081.1	$ 1,227.4
Pension plans with the PBO in excess of plan assets
Projected benefit obligation	1,273.5	1,446.5
Fair value of plan assets	879.0	912.1
Other post-retirement benefit plans with the APBO in excess of plan assets
Accumulated benefit obligation	1,081.1	1,227.4
Fair value of plan assets	879.0	912.1
Post-Retirement Benefits
Other post-retirement benefit plans with the APBO in excess of plan assets
Accumulated benefit obligation	124.5	133.6
Fair value of plan assets	$ 118.3	$ 122.5

PENSION PLANS AND POST-RETIREMENT BENEFITS - Weighted-Average Assumptions (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Pension Benefits
Weighted-average assumptions used to determine the benefit obligation
Discount rate	3.11%	2.97%
Rate of compensation increase	3.71%	3.71%
Interest crediting rate for cash balance plans	4.45%	4.46%
Weighted-average assumptions used to determine net costs
Discount rate	2.97%	3.64%
Expected long-term return on plan assets	6.57%	6.56%
Rate of compensation increase	3.71%	3.71%
Interest crediting rate for cash balance plans	4.46%	4.50%
Post-Retirement Benefits
Weighted-average assumptions used to determine the benefit obligation
Discount rate	3.13%	2.88%
Rate of compensation increase	3.75%	3.75%
Weighted-average assumptions used to determine net costs
Discount rate	2.88%	3.58%
Expected long-term return on plan assets	2.27%	2.37%
Rate of compensation increase	3.75%	3.75%

PENSION PLANS AND POST-RETIREMENT BENEFITS - Expected Future Services (Details) $ in Millions	Dec. 31, 2021 USD ($)
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
2022	$ 77.5
2023	79.5
2024	81.7
2025	85.3
2026	88.8
2027-2031	455.7
Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
2022	6.9
2023	6.7
2024	6.6
2025	6.5
2026	6.4
2027-2031	$ 31.2

PENSION PLANS AND POST-RETIREMENT BENEFITS - Target Asset Allocations (Details)	Dec. 31, 2021
Pension Benefits \| Domestic equities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	26.00%
Pension Benefits \| International equities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	19.00%
Pension Benefits \| Bonds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	37.00%
Pension Benefits \| Mortgage & asset backed securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	0.00%
Pension Benefits \| Real estate investments
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	7.00%
Pension Benefits \| Other investments
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	11.00%
Post-Retirement Benefits \| Domestic equities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	15.00%
Post-Retirement Benefits \| International equities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	8.00%
Post-Retirement Benefits \| Bonds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	68.00%
Post-Retirement Benefits \| Mortgage & asset backed securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	6.00%
Post-Retirement Benefits \| Real estate investments
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	0.00%
Post-Retirement Benefits \| Other investments
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	3.00%

PENSION PLANS AND POST-RETIREMENT BENEFITS - Cost Trend Assumptions (Details) - Post-Retirement Benefits	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Assumed annual health care cost growth rates
Health care cost trend rate assumed for next year	6.00%	6.00%
Rate to which the cost trend is assumed to decline (the ultimate trend rate)	4.50%	4.50%
Year that rate reaches ultimate trend	2030	2027

PENSION PLANS AND POST-RETIREMENT BENEFITS - Employee Savings Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, cost	$ 13.9	$ 7.8	$ 8.0

EQUITY COMPENSATION - Narrative (Details) - shares	1 Months Ended	12 Months Ended
EQUITY COMPENSATION - Narrative (Details) - shares	Dec. 31, 2021	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility, maximum		32.00%
Expected dividend yield		3.99%
Risk-free interest rate, maximum		0.24%
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares vested related to the Merger	108,010
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares vested related to the Merger	36,012

EQUITY COMPENSATION - Income Tax Benefit (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity compensation expense	$ 5.1	$ 5.7	$ 5.7
Income tax (expense) benefit	$ (0.6)	$ 0.2	$ 0.3

EQUITY COMPENSATION - RSUs (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
RSU With Performance Measures
Nonvested Restricted Share Units
Beginning balance (in shares)	347,964
Granted (in shares)	270,277
Vested (in shares)	0	0	0
Forfeited (in shares)	(104,526)
Ending balance (in shares)	513,715	347,964
Grant Date Fair Value*
Weighted average beginning balance (in dollars per share)	$ 61.57
Weighted average granted (in dollars per share)	57.21	$ 87.98	$ 37.87
Weighted average, forfeited (in dollars per share)	64.85
Weighted average ending balance (in dollars per share)	$ 58.79	$ 61.57
Remaining weighted-average contractual term (in years)	1 year 4 months 24 days
Total unrecognized compensation expense,	$ 15.3
RSUs
Nonvested Restricted Share Units
Beginning balance (in shares)	160,742
Granted (in shares)	171,363
Vested (in shares)	43,785
Forfeited (in shares)	(35,274)
Ending balance (in shares)	253,046	160,742
Grant Date Fair Value*
Weighted average beginning balance (in dollars per share)	$ 59.42
Weighted average granted (in dollars per share)	55.30	$ 68.92	$ 54.47
Weighted average, vested (in dollars per share)	54.61
Weighted average, forfeited (in dollars per share)	59.24
Weighted average ending balance (in dollars per share)	$ 57.18	$ 59.42
Remaining weighted-average contractual term (in years)	1 year 4 months 24 days
Total unrecognized compensation expense,	$ 7.0
Total fair value of shares	$ 2.4	$ 6.5	$ 2.6

SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDIT - Narrative (Details) - Cash Borrowings	Dec. 31, 2021 USD ($)
Short-term Debt [Line Items]
Line of credit, maximum borrowing capacity	$ 2,500,000,000
Debt instrument, debt default, threshold	$ 100,000,000
Debt Instrument, debt to capitalization ratio (no more than)	65.00%

SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDIT - Schedule of Short Term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Short-term Debt [Line Items]
Master Credit Facility	$ 2,500.0	$ 2,500.0
Available Borrowings	$ 1,339.9	$ 2,165.3
Weighted Average Interest Rate on Short-Term Borrowings	0.40%	0.36%
Commercial Paper
Short-term Debt [Line Items]
Long-term line of credit	$ 1,159.3	$ 115.0
Letters of Credit
Short-term Debt [Line Items]
Letters of Credit	0.8	19.7
Cash Borrowings
Short-term Debt [Line Items]
Long-term line of credit	$ 0.0	$ 200.0

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References + Details

LONG-TERM DEBT (Details) - USD ($) $ in Millions	Dec. 31, 2021	Nov. 30, 2021	Apr. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 0.0			$ 0.0
Unamortized debt discount and debt issuance costs	(24.4)			(26.4)
Total excluding current maturities	3,934.2			3,931.5
Fair Value adjustment
Debt Instrument [Line Items]
Long-term debt gross	0.0			0.0
Current maturities of long-term debt	$ (1.8)			$ (4.4)
Mortgage Bonds \| Mortgage Bonds Due 2025 EKC
Debt Instrument [Line Items]
Interest rate	3.25%			3.25%
Long-term debt gross	$ 0.0			$ 0.0
Mortgage Bonds \| Mortgage Bonds Due 2026 EKC
Debt Instrument [Line Items]
Interest rate	2.55%			2.55%
Long-term debt gross	$ 0.0			$ 0.0
Mortgage Bonds \| Mortgage Bonds Due 2027 EKC
Debt Instrument [Line Items]
Interest rate	3.10%			3.10%
Long-term debt gross	$ 0.0			$ 0.0
Mortgage Bonds \| Mortgage Bonds Due 2042 EKC
Debt Instrument [Line Items]
Interest rate	4.125%			4.125%
Long-term debt gross	$ 0.0			$ 0.0
Mortgage Bonds \| Mortgage Bonds Due 2043 EKC
Debt Instrument [Line Items]
Interest rate	4.10%			4.10%
Long-term debt gross	$ 0.0			$ 0.0
Mortgage Bonds \| Mortgage Bonds Due 2043 EKC
Debt Instrument [Line Items]
Interest rate	4.625%			4.625%
Long-term debt gross	$ 0.0			$ 0.0
Mortgage Bonds \| Mortgage Bonds Due 2045 EKC
Debt Instrument [Line Items]
Interest rate	4.25%			4.25%
Long-term debt gross	$ 0.0			$ 0.0
Mortgage Bonds \| Mortgage Bonds Due 2049 EKC
Debt Instrument [Line Items]
Interest rate	3.25%			3.25%
Long-term debt gross
Mortgage Bonds \| Mortgage Bonds Due 2050 EKC
Debt Instrument [Line Items]
Interest rate	3.45%			3.45%
Long-term debt gross	$ 0.0			$ 0.0
Mortgage Bonds \| Mortgage Bonds Due 2023 EKS
Debt Instrument [Line Items]
Interest rate	6.15%			6.15%
Long-term debt gross	$ 0.0			$ 0.0
Mortgage Bonds \| Mortgage Bonds Due 2037 EKS
Debt Instrument [Line Items]
Interest rate	6.53%			6.53%
Long-term debt gross	$ 0.0			$ 0.0
Mortgage Bonds \| Mortgage Bonds Due 2038 EKS
Debt Instrument [Line Items]
Interest rate	6.64%			6.64%
Long-term debt gross	$ 0.0			$ 0.0
Mortgage Bonds \| Mortgage Bonds Due 2044 EKS
Debt Instrument [Line Items]
Interest rate	4.30%			4.30%
Long-term debt gross	$ 0.0			$ 0.0
Mortgage Bonds \| Mortgage Bonds Due 2023 EM
Debt Instrument [Line Items]
Interest rate	2.95%			2.95%
Long-term debt gross	$ 79.5			$ 79.5
Mortgage Bonds \| Mortgage Bonds Due 2049 EM
Debt Instrument [Line Items]
Interest rate	4.125%			4.125%
Long-term debt gross	$ 400.0			$ 400.0
Mortgage Bonds \| Mortgage Bonds Due 2030 EM
Debt Instrument [Line Items]
Interest rate	2.25%			2.25%
Long-term debt gross	$ 400.0			$ 400.0
Mortgage Bonds \| Mortgage Bonds Due Through 2021-2021 EMW
Debt Instrument [Line Items]
Interest rate				9.44%
Long-term debt gross				$ 0.0
Mortgage Bonds \| General Mortgage Bonds EIRR Series 2005
Debt Instrument [Line Items]
Long-term debt gross	$ 50.0			$ 21.9
Pollution Control Bonds \| Pollution Control Bonds Due 2032A EKC
Debt Instrument [Line Items]
Interest rate	0.132%			0.18%
Long-term debt gross	$ 0.0			$ 0.0
Pollution Control Bonds \| Pollution Control Bonds Due 2032B EKC
Debt Instrument [Line Items]
Interest rate	0.132%			0.18%
Long-term debt gross	$ 0.0			$ 0.0
Pollution Control Bonds \| Pollution Control Bonds Due 2027 EKS
Debt Instrument [Line Items]
Interest rate	0.132%			0.18%
Long-term debt gross	$ 0.0			$ 0.0
Pollution Control Bonds \| Pollution Control Bonds Due 2031 EKS
Debt Instrument [Line Items]
Interest rate	2.50%			2.50%
Long-term debt gross	$ 0.0			$ 0.0
Pollution Control Bonds \| Pollution Control Bonds Due 2032A EKS
Debt Instrument [Line Items]
Interest rate	0.132%			0.18%
Long-term debt gross	$ 0.0			$ 0.0
Pollution Control Bonds \| Pollution Control Bonds Due 2032B EKS
Debt Instrument [Line Items]
Interest rate	0.132%			0.18%
Long-term debt gross	$ 0.0			$ 0.0
Pollution Control Bonds \| EIRR Bonds Series 2007A and 2007B due 2035 EM
Debt Instrument [Line Items]
Interest rate	0.167%			0.20%
Long-term debt gross	$ 146.5			$ 146.5
Pollution Control Bonds \| EIRR Bonds Series 2007A and 2007B due 2038 EM
Debt Instrument [Line Items]
Interest rate	2.75%			2.75%
Long-term debt gross	$ 23.4			$ 23.4
Senior Notes \| Series Notes Due 2023 EM
Debt Instrument [Line Items]
Interest rate	3.15%			3.15%
Long-term debt gross	$ 300.0			$ 300.0
Senior Notes \| Senior Notes Due 2025 EM
Debt Instrument [Line Items]
Interest rate	3.65%			3.65%
Long-term debt gross	$ 350.0			$ 350.0
Senior Notes \| Senior Notes Due 2035 EM
Debt Instrument [Line Items]
Interest rate	6.05%			6.05%
Long-term debt gross	$ 250.0			$ 250.0
Senior Notes \| Senior Notes Due 2035A EM
Debt Instrument [Line Items]
Interest rate	5.78%			5.78%
Senior Notes \| Senior Notes Due 2041 EM
Debt Instrument [Line Items]
Interest rate	5.30%			5.30%
Long-term debt gross	$ 400.0			$ 400.0
Senior Notes \| Senior Notes Due 2047 EM
Debt Instrument [Line Items]
Interest rate	4.20%			4.20%
Long-term debt gross	$ 300.0			$ 300.0
Senior Notes \| Senior Notes Due 2048 EM
Debt Instrument [Line Items]
Interest rate	4.20%			4.20%
Long-term debt gross	$ 300.0			$ 300.0
Senior Notes \| Senior Notes Due 2021 EMW
Debt Instrument [Line Items]
Interest rate		8.27%		8.27%
Long-term debt gross		$ 80.9		$ 0.0
Senior Notes \| Senior Notes Due 2025 EMW
Debt Instrument [Line Items]
Interest rate	3.49%		3.49%	3.49%
Long-term debt gross	$ 0.0		$ 36.0	$ 0.0
Senior Notes \| Senior Notes Due 2033 EMW
Debt Instrument [Line Items]
Interest rate	4.06%		4.06%	4.06%
Long-term debt gross	$ 0.0		$ 60.0	$ 0.0
Senior Notes \| Senior Notes Due 2043 EMW
Debt Instrument [Line Items]
Interest rate	4.74%		4.74%	4.74%
Long-term debt gross	$ 0.0		$ 150.0	$ 0.0
Senior Notes \| Senior Notes Series Due 2022 EMW
Debt Instrument [Line Items]
Interest rate	3.74%		3.74%	3.74%
Long-term debt gross	$ 0.0		$ 100.0	$ 0.0
Senior Notes \| Senior Notes Series A due 2031 EMW
Debt Instrument [Line Items]
Interest rate	2.86%		2.86%
Long-term debt gross	$ 0.0		$ 350.0
Senior Notes \| Senior Notes Series B due 2033 EMW
Debt Instrument [Line Items]
Interest rate	3.01%		3.01%
Long-term debt gross	$ 0.0		$ 75.0
Senior Notes \| Senior Notes Series C due 2036 EMW
Debt Instrument [Line Items]
Interest rate	3.21%		3.21%
Long-term debt gross	$ 0.0		$ 75.0
Senior Notes \| Senior Notes Due 2021
Debt Instrument [Line Items]
Interest rate			4.85%	4.85%
Long-term debt gross			$ 350.0	$ 0.0
Senior Notes \| Senior Notes Due 2022
Debt Instrument [Line Items]
Interest rate	5.292%			5.292%
Long-term debt gross	$ 0.0			$ 0.0
Senior Notes \| Senior Notes Due 2024
Debt Instrument [Line Items]
Interest rate	2.45%			2.45%
Long-term debt gross	$ 0.0			$ 0.0
Senior Notes \| Senior Notes Due 2029
Debt Instrument [Line Items]
Interest rate	2.90%			2.90%
Long-term debt gross	$ 0.0			$ 0.0
Senior Notes \| Senior Notes Due 2029A
Debt Instrument [Line Items]
Interest rate	3.77%			3.77%
Medium Term Notes \| Medium Term Notes Due 2023 EMW
Debt Instrument [Line Items]
Interest rate	7.33%			7.33%
Long-term debt gross	$ 0.0			$ 0.0
Medium Term Notes \| Medium Term Notes Due 2023 EMW
Debt Instrument [Line Items]
Interest rate	7.17%			7.17%
Long-term debt gross	$ 0.0			$ 0.0
Variable Interest Entities
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 0.0			$ (18.8)

LONG-TERM DEBT - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Nov. 30, 2021	Apr. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Maximum Amount Of First Mortgage Bonds Authorized	$ 3,500.0
AdditionalPrincipalFirstMortgageBondsAvailableToBeIssued	$ 5,075.8
Percentage of Bondable Property Allowed	75.00%
Senior Notes \| Senior Notes Series A due 2031 EMW
Debt Instrument [Line Items]
Long-term debt gross	$ 0.0		$ 350.0
Interest rate	2.86%		2.86%
Senior Notes \| Senior Notes Series B due 2033 EMW
Debt Instrument [Line Items]
Long-term debt gross	$ 0.0		$ 75.0
Interest rate	3.01%		3.01%
Senior Notes \| Senior Notes Series C due 2036 EMW
Debt Instrument [Line Items]
Long-term debt gross	$ 0.0		$ 75.0
Interest rate	3.21%		3.21%
Senior Notes \| Senior Notes Due 2025 EMW
Debt Instrument [Line Items]
Long-term debt gross	$ 0.0		$ 36.0	$ 0.0
Interest rate	3.49%		3.49%	3.49%
Senior Notes \| Senior Notes Due 2033 EMW
Debt Instrument [Line Items]
Long-term debt gross	$ 0.0		$ 60.0	$ 0.0
Interest rate	4.06%		4.06%	4.06%
Senior Notes \| Senior Notes Due 2043 EMW
Debt Instrument [Line Items]
Long-term debt gross	$ 0.0		$ 150.0	$ 0.0
Interest rate	4.74%		4.74%	4.74%
Senior Notes \| Senior Notes Series Due 2022 EMW
Debt Instrument [Line Items]
Long-term debt gross	$ 0.0		$ 100.0	$ 0.0
Interest rate	3.74%		3.74%	3.74%
Senior Notes \| Senior Notes Due 2021
Debt Instrument [Line Items]
Long-term debt gross			$ 350.0	$ 0.0
Interest rate			4.85%	4.85%
Senior Notes \| Senior Notes Due 2021 EMW
Debt Instrument [Line Items]
Long-term debt gross		$ 80.9		$ 0.0
Interest rate		8.27%		8.27%

LONG-TERM DEBT - Scheduled Maturities (Details) $ in Millions	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
2022	$ 0.0
2023	379.5
2024	0.0
2025	350.0
2026	$ 0.0

FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($) $ in Millions	1 Months Ended	10 Months Ended	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Payment for settlement of interest rate swap accounted for as a cash flow hedge	$ 69.8		$ 0.0	$ 0.0	$ 69.8
Notional amount	500.0	$ 500.0
Other comprehensive loss		69.8	0.0	0.0	64.4
Interest expense			(109.8)	(113.6)	(119.8)
Income tax benefit			(52.4)	(7.1)	(35.7)
Accumulated other comprehensive loss over the next twelve months			5.4
Senior Notes Due 2029 Evergy \| Senior Notes
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt issued	$ 800.0	$ 800.0
Interest rate	2.90%	2.90%
Debt Instrument, Term		10 years
Reclassification out of Accumulated Other Comprehensive Income \| Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Interest expense			7.0	7.0	2.0
Income tax benefit			$ (1.5)	$ (4.0)	$ (0.5)

FAIR VALUE MEASUREMENTS - Long-Term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total nuclear decommissioning trust	$ 768.7	$ 652.1
Fair Value, Measurements, Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total nuclear decommissioning trust	48.2	47.8
Fair Value, Measurements, Recurring \| NAV
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total nuclear decommissioning trust	61.8	43.7
Fair Value, Measurements, Recurring \| NAV \| Nuclear decommissioning trust:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total nuclear decommissioning trust	61.8	43.7
Book Value \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	2,925.0	2,923.0
Book Value \| Fair Value, Measurements, Recurring \| Variable Interest Entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	0.0	18.8
Fair Value \| Fair Value, Measurements, Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	3,400.8	3,591.2
Fair Value \| Fair Value, Measurements, Recurring \| Level 2 \| Variable Interest Entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	0.0	19.1
Long-Term debt fair value adjustment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt gross	$ 0.0	$ 0.0

FAIR VALUE MEASUREMENTS - NAV (Details) $ in Millions	12 Months Ended
FAIR VALUE MEASUREMENTS - NAV (Details) $ in Millions	Dec. 31, 2021 USD ($) fund extension	Dec. 31, 2020 USD ($)
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	$ 1.7	$ 2.2
Alternative investments fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	0.0	0.0
Real estate securities fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	0.0	0.0
Nuclear decommissioning trust:
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	1.7	2.2
Core bond fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	0.0	0.0
Combination debt/equity/other fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	0.0	0.0
Rabbi trust:
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	0.0	0.0
Domestic \| Equity securities
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	$ 1.7	2.2
NAV, number of funds \| fund	5
NAV, number of funds making distributions \| fund	3
Domestic \| Equity Securities - Fourth Fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Length of settlement	15 years
NAV, number of extensions \| extension	3
NAV, extension term	1 year
Domestic \| Equity Securities - Fifth Fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Length of settlement	15 years
Fair Value, Measurements, Recurring
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	$ 768.7	652.1
Total rabbi trust	44.2	46.3
Total Assets	856.8	711.6
Fair Value, Measurements, Recurring \| Equity securities
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	299.2	243.1
Fair Value, Measurements, Recurring \| Alternative investments fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	32.7	23.2
Fair Value, Measurements, Recurring \| Real estate securities fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	15.2	12.9
Fair Value, Measurements, Recurring \| Core bond fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	58.1	40.6
Total rabbi trust	12.5	25.6
Fair Value, Measurements, Recurring \| Combination debt/equity/other fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust		20.1
Total rabbi trust	2.4	7.1
Fair Value, Measurements, Recurring \| Domestic \| Equity securities
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	140.4	102.7
NAV \| Fair Value, Measurements, Recurring
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	61.8	43.7
Total rabbi trust	0.0	45.8
Total Assets	61.8	89.5
NAV \| Fair Value, Measurements, Recurring \| Equity securities
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	0.0	0.0
NAV \| Fair Value, Measurements, Recurring \| Alternative investments fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	$ 32.7	23.2
Length of Settlement	65 days
NAV \| Fair Value, Measurements, Recurring \| Real estate securities fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	$ 15.2	12.9
Length of Settlement	65 days
NAV \| Fair Value, Measurements, Recurring \| Nuclear decommissioning trust:
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	$ 61.8	43.7
NAV \| Fair Value, Measurements, Recurring \| Core bond fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	0.0	0.0
Total rabbi trust	0.0	25.6
NAV \| Fair Value, Measurements, Recurring \| Combination debt/equity/other fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust		0.0
Total rabbi trust	0.0	7.1
NAV \| Fair Value, Measurements, Recurring \| Rabbi trust:
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total rabbi trust	0.0	32.7
NAV \| Fair Value, Measurements, Recurring \| Domestic \| Equity securities
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	$ 13.9	$ 7.6

FAIR VALUE MEASUREMENTS - Gains (Losses) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gain (losses)	$ 46.8	$ 28.9	$ 45.8
Nuclear decommissioning trust - equity securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gain (losses)	51.3	23.6	40.7
Nuclear decommissioning trust - debt securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gain (losses)	(4.5)	5.3	5.1
Rabbi trusts - equity securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gain (losses)	$ (1.4)	$ (6.1)	$ 3.2

COMMITMENTS AND CONTINGENCIES - Narrative (Details) $ in Millions	Dec. 31, 2021 USD ($)
Estimates Of Environmental Financial Impact And Related Issues [Line Items]
Industry aggregate limit for nuclear insurance	$ 3,200.0
Industry aggregate limit for non nuclear insurance	1,800.0
Nuclear liability insurance, full limit of public liability	13,600.0
Nuclear liability insurance, maximum available commercial insurance	500.0
Nuclear liability insurance, industry wide retrospective assessment program	13,100.0
Nuclear liability insurance, owners insurance amount, maximum	64.7
Nuclear liability insurance, owners insurance, amount per incident	9.6
Nuclear liability insurance, owners property insurance, maximum	2,800.0
Nuclear liability insurance, owners nonnuclear property insurance, maximum	2,300.0
Nuclear liability insurance, owners property insurance assessment, maximum	$ 14.1

COMMITMENTS AND CONTINGENCIES - Contractual Commitments (Details) $ in Millions	Dec. 31, 2021 USD ($)
Unrecorded Unconditional Purchase Obligations and Lease Commitments [Line Items]
2022	$ 180.4
2023	109.0
2024	72.5
2025	57.6
2026	60.6
After 2026	266.7
Total	746.8
Fuel
Unrecorded Unconditional Purchase Obligations and Lease Commitments [Line Items]
2022	145.3
2023	73.7
2024	43.3
2025	28.4
2026	31.4
After 2026	99.8
Total	421.9
Power
Unrecorded Unconditional Purchase Obligations and Lease Commitments [Line Items]
2022	35.1
2023	35.3
2024	29.2
2025	29.2
2026	29.2
After 2026	166.9
Total	$ 324.9

GUARANTEES (Details) $ in Millions	Dec. 31, 2021 USD ($)
Guarantor Obligations [Line Items]
Maximum exposure	$ 904.0
Commercial Paper
Guarantor Obligations [Line Items]
Maximum exposure	395.3
Guarantee
Guarantor Obligations [Line Items]
Maximum exposure	48.0
Guarantee of Indebtedness of Others
Guarantor Obligations [Line Items]
Maximum exposure	$ 856.0

RELATED PARTY TRANSACTIONS AND RELATIONSHIPS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Evergy Inc Money Pool
Related Party Transaction [Line Items]
Due from Related Parties, Current	$ 155.0	$ 100.0
Evergy Missouri West
Related Party Transaction [Line Items]
Due from (to) related parties	254.5	188.1
Evergy Missouri West \| Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	142.1	168.7	$ 172.8
Evergy Kansas Central
Related Party Transaction [Line Items]
Due from (to) related parties	14.5	21.7
Evergy Kansas Central \| Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	134.7	130.8	154.9
Evergy Metro
Related Party Transaction [Line Items]
Due from (to) related parties	(14.5)	(21.7)
Evergy Metro \| Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	29.4	34.7	$ 40.6
Evergy
Related Party Transaction [Line Items]
Due from (to) related parties	8.7	15.7
Evergy \| Income Tax Receivable
Related Party Transaction [Line Items]
Due from (to) related parties	9.6	$ (3.2)
Evergy \| Income Taxes Payable
Related Party Transaction [Line Items]
Due from (to) related parties	$ (2.5)
Jointly Owned Electricity Generation Plant Iatan No 1 And 2
Related Party Transaction [Line Items]
Jointly owned utility plant, proportionate ownership share	18.00%
Jeffrey Energy Center
Related Party Transaction [Line Items]
Jointly owned utility plant, proportionate ownership share	8.00%
La Cygne Station
Related Party Transaction [Line Items]
Jointly owned utility plant, proportionate ownership share	50.00%

SHAREHOLDERS' EQUITY - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	Apr. 30, 2021	Dec. 31, 2021	Feb. 28, 2021
Line of Credit Facility [Line Items]
Preferred stock, shares authorized (in shares)		12,000,000
Stock to be Sold and Issued Under Securities Purchase Agreement, Shares			2,269,447
Stock to be Sold and Issued Under Securities Purchase Agreement, Value			$ 113.2
Warrant to be Issued Under Securities Purchase Agreement for Potential Shares, Maximum			3,950,000
Warrants and Rights Outstanding, Term			3 years
Class of Warrant or Right, Exercise Price of Warrants or Rights			$ 64.70
Restriction on payment of dividends (at least)		40.00%
Retained earnings restrictions		$ 386.9
Restricted net assets of subsidiaries		5,700.0
Issuance of stock, net of issuance costs	$ 112.5	$ 112.5
Stock issuance costs	$ 0.7

VARIABLE INTEREST ENTITIES - Narrative (Details)	1 Months Ended		3 Months Ended	12 Months Ended
VARIABLE INTEREST ENTITIES - Narrative (Details)	Aug. 31, 2019	Jul. 31, 2017	Mar. 31, 2020	Dec. 31, 2021
Jeffrey Energy Center
Variable Interest Entity [Line Items]
VIE ownership percentage	8.00%	8.00%	8.00%	8.00%
La Cygne Unit 2 [Member]
Variable Interest Entity [Line Items]
VIE ownership percentage				50.00%

VARIABLE INTEREST ENTITIES - Assets and Liabilities Related to VIE (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Assets:
Property, plant and equipment, net	$ 10,548.9	$ 10,193.6
Liabilities:
Current maturities of long-term debt	0.0	0.0
Accrued interest	26.4	30.0
Long-term debt, net	3,934.2	3,931.5
Variable Interest Entities
Assets:
Property, plant and equipment, net	147.8	154.9
Liabilities:
Current maturities of long-term debt	0.0	18.8
Accrued interest	$ 0.0	$ 0.1

TAXES - Income Tax Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current income taxes
Federal	$ 39.2	$ (0.2)	$ 43.9
State	3.2	10.8	22.4
Total	42.4	10.6	66.3
Deferred income taxes
Federal	6.5	29.8	(24.5)
State	4.8	(32.2)	(5.0)
Total	11.3	(2.4)	(29.5)
Investment Tax Credits
Amortization	(1.3)	(1.1)	(1.1)
Deferral	0.3	0.0	5.2
Total	(1.3)	(1.1)	(1.1)
Income tax expense (benefit)	$ 52.4	$ 7.1	$ 35.7
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Federal statutory income tax rate	21.00%	21.00%	21.00%
Effect of:
COLI policies	(0.20%)	(0.30%)	(0.20%)
State income taxes	1.70%	4.90%	4.70%
Flow through depreciation for plant-related differences	(7.80%)	(10.00%)	(9.40%)
Federal tax credits	(0.20%)	(1.90%)	(2.50%)
Non-controlling interest	(0.50%)	(0.60%)	(0.80%)
AFUDC equity	(0.70%)	(0.50%)	(0.20%)
Amortization of federal investment tax credits	(0.40%)	(0.40%)	(0.40%)
Changes In Uncertain Tax Positions, Net	0.00%	0.00%	(0.40%)
Federal or state tax rate change	0.00%	(10.50%)	0.00%
Valuation allowance	0.00%	0.00%	(0.40%)
Stock compensation	0.00%	(0.40%)	0.00%
Officer compensation limitation	0.90%	0.40%	0.30%
Other	0.10%	0.00%	(1.00%)
Effective income tax rate	14.40%	2.30%	12.30%

TAXES - Deferred Income Taxes (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Tax credit carryforward	$ 162.1	$ 195.9
Income taxes refundable to customers, net	123.8	132.8
Deferred employee benefit costs	86.8	117.9
Net operating loss carryforward	0.0	0.2
Deferred state income taxes	38.6	37.8
Accrued liabilities	56.4	61.0
Other	59.6	44.8
Total deferred tax assets before valuation allowance	527.3	590.4
Valuation allowances	0.0	0.0
Total deferred tax assets, net	527.3	590.4
Deferred tax liabilities:
Plant-related	(996.7)	(972.1)
Deferred employee benefit costs	(43.5)	(76.3)
ARO regulatory assets	(49.9)	(54.3)
Acquisition premium	0.0	0.0
Other regulatory assets	(20.4)	(16.4)
Other	(22.9)	(30.1)
Total deferred tax liabilities	(1,133.4)	(1,149.2)
Net deferred income tax liabilities	$ (606.1)	$ (558.8)

TAXES - Tax Credit Carryforwards (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	$ 162.1
General Business Tax Credit Carryforward
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	162.1	$ 195.9
Amount of tax credit acquired in business combination	0.1
Valuation allowance	0.1
Federal Alternative Minimum Tax Credit Carryforward [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	1.6
2004
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	0.0
2005
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	0.0
2006
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	0.0
2007
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	0.0
2009
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	37.9
2010
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	18.2
2011
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	13.2
2012
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	10.7
2013
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	12.9
2014
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	13.0
2015
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	13.2
2016
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	12.4
2017
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	8.2
2018
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	7.5
2019
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	6.7
2020
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	7.4
Tax Year 2021
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	$ 0.8

TAXES - Net Operating Loss Carryforwards (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Operating Loss Carryforwards [Line Items]
Deferred tax benefits	$ 33.6	$ 42.2
Operating loss carryforwards of federal income tax benefit	7.1
Tax credit carryforward, amount	162.1
Federal Alternative Minimum Tax Credit Carryforward
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, amount	1.6
Internal Revenue Service (IRS)
Operating Loss Carryforwards [Line Items]
Tax benefits related to NOLs	7.1
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Deferred tax benefits	6.6	$ 0.2
Operating loss carryforwards of federal income tax benefit	5.6
2005
Operating Loss Carryforwards [Line Items]
Deferred tax benefits	1.9
Tax credit carryforward, amount	0.0
2006
Operating Loss Carryforwards [Line Items]
Deferred tax benefits	31.7
Tax credit carryforward, amount	0.0
2014
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, amount	13.0
2015
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, amount	13.2
2016
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, amount	12.4
2017
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, amount	$ 8.2

TAXES - Valuation Allowance (Details) $ in Millions	12 Months Ended
TAXES - Valuation Allowance (Details) $ in Millions	Dec. 31, 2021 USD ($)
Income Tax Disclosure [Abstract]
Tax benefit	$ 1.5

TAXES - State Tax Reform (Details) - USD ($) $ in Millions		12 Months Ended
TAXES - State Tax Reform (Details) - USD ($) $ in Millions	May 01, 2020	Dec. 31, 2021
State Tax Reform [Line Items]
Decrease in net deferred income tax liabilities due to tax reform	$ 152.9
Decrease in net deferred income tax liabilities for revaluation of deferred income tax assets and liabilities in rate base	106.7
Decrease in net deferred income tax liabilities for tax gross-up adjustment for ratemaking purposes due to tax reform	14.4
Decrease in unamortized investment tax credits	183.6
Decrease in unamortized investment tax credits for tax gross up adjustment for ratemaking purposes	16.9
Income tax expense from tax reform	$ 32.2
Kansas state statutory income tax rate thru 2020		7.00%

LEASES - Narrative (Details)	12 Months Ended
LEASES - Narrative (Details)	Dec. 31, 2021
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term	11 years

LEASES - Schedule of Lease Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Finance lease costs
Amortization of right-of-use assets	$ 0.4	$ 0.3	$ 0.1
Interest on lease liabilities	0.1	0.1	0.1
Operating lease costs	9.0	9.3	9.2
Short-term lease costs	3.0	1.5	2.6
Variable lease costs for renewable purchase power agreements	101.0	112.2	129.2
Total lease costs	$ 113.5	$ 123.4	$ 141.2

LEASES - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 10.4	$ 10.8	$ 9.9
Operating cash flows from finance leases	0.1	0.1	0.1
Financing cash flows from finance leases	0.5	0.4	0.1
Right-of-use assets obtained in exchange for new operating lease liabilities	9.3	0.3	2.4
Right-of-use assets obtained in exchange for new finance lease liabilities	$ 0.0	$ 1.6	$ 0.0

LEASES - Schedule of Future Payments for Finance Leases (Details) $ in Millions	Dec. 31, 2021 USD ($)
Lessee, Lease, Description [Line Items]
2022	$ 0.6
2023	0.6
2024	0.6
2025	0.3
2026	0.2
After 2026	0.3
Total finance lease payments	2.6
Amounts representing imputed interest	(0.4)
Present value of lease payments	$ 2.2
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other
Less: current portion	$ (0.5)
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	LONG-TERM LIABILITIES, OTHER
Total long-term obligations under finance leases	$ 1.7
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	PROPERTY, PLANT AND EQUIPMENT, NET
Right-of-use assets under finance leases included in property, plant and equipment, net on the consolidated balance sheets	$ 2.2
Weighted-average remaining lease term (years)	5 years
Weighted-average discount rate	5.10%
Other Current Liabilities
Lessee, Lease, Description [Line Items]
Less: current portion	$ (5.4)
Other Noncurrent Liabilities
Lessee, Lease, Description [Line Items]
Total long-term obligations under finance leases	40.9
Property, plant and equipment, net
Lessee, Lease, Description [Line Items]
Right-of-use assets under finance leases included in property, plant and equipment, net on the consolidated balance sheets	$ 310.3

LEASES - Schedule of Future Payments for Operating Leases (Details) $ in Millions	Dec. 31, 2021 USD ($)
Lessee, Lease, Description [Line Items]
2022	$ 9.2
2023	8.6
2024	7.9
2025	6.4
2026	5.4
After 2026	30.3
Total operating lease payments	67.8
Amounts representing imputed interest	$ (6.3)
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	LONG-TERM LIABILITIES, OTHER
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	LONG-TERM ASSETS, OTHER
Right-of-use assets under operating leases included in other assets on the consolidated balance sheets	$ 46.7
Weighted-average remaining lease term (years)	9 years 3 months 18 days
Weighted-average discount rate	2.10%
Other Liabilities
Lessee, Lease, Description [Line Items]
Present value of lease payments	$ 61.5
Other Current Liabilities
Lessee, Lease, Description [Line Items]
Less: current portion	(8.0)
Other Noncurrent Liabilities
Lessee, Lease, Description [Line Items]
Total long-term obligations under operating leases	53.5
Assets
Lessee, Lease, Description [Line Items]
Right-of-use assets under operating leases included in other assets on the consolidated balance sheets	$ 90.7

Schedule I Financial Statements of Parent Company Statements of Income (Details) - USD ($) $ in Millions	10 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
OPERATING EXPENSES:
Operating and maintenance		$ 365.4	$ 407.5	$ 451.9
Total Operating Expenses		1,426.1	1,271.3	1,380.0
INCOME FROM OPERATIONS		487.6	434.3	426.5
OTHER INCOME (EXPENSE):
Equity in earnings from subsidiaries		4.0	4.6	4.6
Other expense		(29.4)	(25.5)	(21.4)
Total Other Expense, Net		(13.1)	(14.9)	(15.8)
Interest expense		109.8	113.6	119.8
INCOME BEFORE INCOME TAXES		364.7	305.8	290.9
Income tax benefit		(52.4)	(7.1)	(35.7)
Net income attributable to Evergy, Inc.		312.3	298.7	255.2
COMPREHENSIVE INCOME
NET INCOME		312.3	298.7	255.2
Derivative hedging activity
Loss on derivative hedging instruments	$ (69.8)	0.0	0.0	(64.4)
Income tax benefit		0.0	0.0	16.5
Net loss on derivative hedging instruments		0.0	0.0	(47.9)
Reclassification to expenses, net of tax		(0.3)	(0.2)	0.7
Derivative hedging activity, net of tax		(0.3)	(0.2)	0.7
Total other comprehensive income (loss)		(0.3)	(0.2)	0.7
COMPREHENSIVE INCOME		312.0	298.5	255.9
Parent
OPERATING EXPENSES:
Operating and maintenance		13.2	39.3	19.4
Total Operating Expenses		13.2	39.3	19.4
INCOME FROM OPERATIONS		(13.2)	(39.3)	(19.4)
OTHER INCOME (EXPENSE):
Equity in earnings from subsidiaries		932.9	683.4	698.2
Investment earnings		19.2	32.1	32.7
Other expense		(8.3)	(0.1)	(0.1)
Total Other Expense, Net		943.8	715.4	730.8
Interest expense		74.3	86.3	60.7
INCOME BEFORE INCOME TAXES		856.3	589.8	650.7
Income tax benefit		16.5	22.7	13.7
Net income attributable to Evergy, Inc.		872.8	612.5	664.4
Derivative hedging activity
Loss on derivative hedging instruments		0.0	0.0	(64.4)
Income tax benefit		0.0	0.0	16.5
Net loss on derivative hedging instruments		0.0	0.0	(47.9)
Reclassification to expenses, net of tax		5.5	3.0	1.5
Derivative hedging activity, net of tax		5.5	3.0	(46.4)
Other comprehensive loss from subsidiaries, net		(0.1)	(2.4)	(0.6)
Total other comprehensive income (loss)		5.4	0.6	(47.0)
COMPREHENSIVE INCOME		$ 878.2	$ 613.1	$ 617.4

Schedule I Financial Statements of Parent Company Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
CURRENT ASSETS:
Cash and cash equivalents	$ 2.1	$ 71.6
Income taxes receivable	0.0	3.2
Prepaid expenses and other assets	41.0	27.4
Total Current Assets	766.5	764.9
OTHER ASSETS:
Other	104.4	133.9
TOTAL ASSETS	9,156.8	8,915.8
CURRENT LIABILITIES:
Current maturities of long-term debt	0.0	0.0
Accounts Payable to subsidiaries	0.1	0.1
Accrued interest	26.4	30.0
Other	48.8	37.3
Total Current Liabilities	638.5	586.0
LONG-TERM LIABILITIES:
Long-term debt, net	3,934.2	3,931.5
Other	103.7	148.1
Total Long-Term Liabilities	5,497.1	5,570.6
Commitments and Contingencies (Note 14)
Evergy, Inc. Shareholders' Equity:
Common stock - 600,000,000 shares authorized, without par value, 229,299,900 and 226,836,670 shares issued	1,563.1	1,563.1
Retained earnings	1,453.8	1,191.5
Accumulated other comprehensive loss	4.3	4.6
Total Evergy, Inc. Shareholders' Equity	3,021.2	2,759.2
TOTAL LIABILITIES AND EQUITY	9,156.8	8,915.8
Parent
CURRENT ASSETS:
Cash and cash equivalents	7.5	11.0
Accounts receivable from subsidiaries	72.2	54.1
Notes receivable from subsidiaries	289.5	349.4
Income taxes receivable	14.8	7.4
Prepaid expenses and other assets	2.0	1.9
Total Current Assets	386.0	423.8
OTHER ASSETS:
Investment in subsidiaries	10,992.1	10,349.2
Note receivable from subsidiaries	0.0	287.5
Deferred income taxes	19.0	20.5
Other	1.2	0.5
Total Other Assets	11,012.3	10,657.7
TOTAL ASSETS	11,398.3	11,081.5
CURRENT LIABILITIES:
Current maturities of long-term debt	287.5	350.0
Notes payable and commercial paper	358.0	200.0
Accounts Payable to subsidiaries	22.3	18.4
Accrued interest	12.4	13.9
Other	8.1	11.0
Total Current Liabilities	688.3	593.3
LONG-TERM LIABILITIES:
Long-term debt, net	1,590.1	1,875.7
Other	14.9	11.7
Total Long-Term Liabilities	1,605.0	1,887.4
Commitments and Contingencies (Note 14)
Evergy, Inc. Shareholders' Equity:
Common stock - 600,000,000 shares authorized, without par value, 229,299,900 and 226,836,670 shares issued	7,188.7	7,063.2
Retained earnings	1,960.3	1,587.0
Accumulated other comprehensive loss	(44.0)	(49.4)
Total Evergy, Inc. Shareholders' Equity	9,105.0	8,600.8
TOTAL LIABILITIES AND EQUITY	$ 11,398.3	$ 11,081.5

Schedule I Financial Statements of Parent Company Balance Sheet Parenthetical (Details) - shares	Dec. 31, 2021	Dec. 31, 2020
Condensed Balance Sheet Statements, Captions [Line Items]
Common stock - shares authorized (in shares)	1,000	1,000
Common stock - shares issued (in shares)	1	1
Parent
Condensed Balance Sheet Statements, Captions [Line Items]
Common stock - shares authorized (in shares)	600,000,000	600,000,000
Common stock - shares issued (in shares)	229,299,900	226,836,670

Schedule I Financial Statements of Parent Company Statement of Cash Flows (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income attributable to Evergy, Inc.		$ 312.3	$ 298.7	$ 255.2
Adjustments to reconcile income to net cash from operating activities:
Non-cash compensation		15.6	16.0	16.3
Net deferred income taxes and credits		10.0	(3.5)	(30.6)
Equity in earnings from subsidiaries		(4.0)	(4.6)	(4.6)
Other		(0.4)	(0.4)	0.3
Changes in working capital items:
Prepaid expenses and other current assets		(16.3)	(7.9)	28.0
Accrued taxes		6.9	1.6	(9.6)
Other current liabilities		44.0	2.4	(53.2)
Changes in other assets		61.5	59.1	33.7
Cash Flows from Operating Activities		734.2	647.5	614.2
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Cash Flows from in Investing Activities		(741.2)	(668.3)	(444.3)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net		0.0	(199.3)	22.4
Proceeds from long-term debt		0.0	396.2	393.2
Retirements of long-term debt		0.0	0.0	(400.0)
Payment for settlement of interest rate swap accounted for as a cash flow hedge	$ (69.8)	0.0	0.0	(69.8)
Cash dividends paid		(50.0)	(120.0)	(175.0)
Issuance of common stock		112.5	0.0	0.0
Repurchase of common stock		0.0	0.0	(1,628.7)
Other financing activities		1.5	1.5	0.9
Cash Flows used in Financing Activities		(62.5)	90.4	(170.5)
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH		(69.5)	69.6	(0.6)
Beginning of period		71.6	2.0	2.6
End of period		2.1	71.6	2.0
Parent
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income attributable to Evergy, Inc.		872.8	612.5	664.4
Adjustments to reconcile income to net cash from operating activities:
Non-cash compensation		15.6	16.0	16.3
Net deferred income taxes and credits		0.0	9.6	21.4
Equity in earnings from subsidiaries		(932.9)	(683.4)	(698.2)
Other		7.0	7.0	2.1
Changes in working capital items:
Accounts receivable from subsidiaries		(18.2)	(30.0)	8.9
Income taxes receivable		(7.5)	0.6	(7.8)
Prepaid expenses and other current assets		0.0	0.8	(0.1)
Accounts payable to subsidiaries		3.9	5.0	(15.0)
Accrued interest		(1.4)	(0.7)	12.5
Other current liabilities		(3.2)	2.9	1.7
Cash dividends from subsidiaries		290.0	355.0	460.0
Changes in other assets		0.1	0.3	0.2
Changes in other liabilities		4.8	(3.7)	(3.5)
Cash Flows from Operating Activities		231.0	291.9	462.9
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Repayment of intercompany note		347.4	0.0	0.0
Cash Flows from in Investing Activities		347.4	0.0	0.0
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net		157.1	180.0	20.0
Proceeds from long-term debt		0.0	0.0	1,585.0
Retirements of long-term debt		(350.0)	0.0	0.0
Payment for settlement of interest rate swap accounted for as a cash flow hedge		0.0	0.0	(69.8)
Cash dividends paid		(497.9)	(465.0)	(462.5)
Issuance of common stock		112.5	0.0	0.0
Repurchase of common stock		0.0	0.0	(1,628.7)
Other financing activities		(3.6)	(7.5)	(2.4)
Cash Flows used in Financing Activities		(581.9)	(292.5)	(558.4)
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH		(3.5)	(0.6)	(95.5)
Beginning of period		11.0	11.6	107.1
End of period		$ 7.5	$ 11.0	$ 11.6

Schedule I Financial Statements of Parent Company Schedule I Financial Statements of Parent Company - Dividends (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Parent
Condensed Financial Statements, Captions [Line Items]
Cash dividends from subsidiaries	$ 290.0	$ 355.0	$ 460.0

Schedule II Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for uncollectible accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance At Beginning Of Period	$ 8.1	$ 4.6	$ 3.8
Additions Charged To Costs And Expenses	10.5	9.0	13.7
Additions Charged To Other Accounts	5.3	6.9	6.3
Deductions	10.6	12.4	19.2
Balance At End Of Period	13.3	8.1	4.6
Tax valuation allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance At Beginning Of Period	14.4	0.0	1.7
Additions Charged To Costs And Expenses	0.0	0.0	0.0
Additions Charged To Other Accounts	0.0	0.0	0.0
Deductions	1.6	3.1	1.7
Balance At End Of Period	$ 12.8	$ 14.4	$ 0.0

Label	Element	Value
Maximum Amount Of Outstanding Principal Under Receivables Agreement	evrg_MaximumAmountOfOutstandingPrincipalUnderReceivablesAgreement	$ 130,000,000
Borrowings From Mid November Through Mid June [Member]
Maximum Amount Of Outstanding Principal Under Receivables Agreement	evrg_MaximumAmountOfOutstandingPrincipalUnderReceivablesAgreement	50,000,000
Borrowing From Mid June Through Mid November [Member]
Maximum Amount Of Outstanding Principal Under Receivables Agreement	evrg_MaximumAmountOfOutstandingPrincipalUnderReceivablesAgreement	65,000,000
Borrowing From Mid June Through Mid October [Member]
Maximum Amount Of Outstanding Principal Under Receivables Agreement	evrg_MaximumAmountOfOutstandingPrincipalUnderReceivablesAgreement	200,000,000
Borrowings From Mid October Through Mid June [Member]
Maximum Amount Of Outstanding Principal Under Receivables Agreement	evrg_MaximumAmountOfOutstandingPrincipalUnderReceivablesAgreement	$ 185,000,000

FAIR VALUE MEASUREMENTS - Recurring (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Assets
Equity securities	$ 31.4
Total nuclear decommissioning trust	768.7	$ 652.1
Total rabbi trust	44.2	46.3
Total self-insured health plan trust	12.5	13.2
Total Assets	856.8	711.6
Equity securities
Assets
Equity securities	31.4
Total nuclear decommissioning trust	299.2	243.1
Total self-insured health plan trust	2.0	1.7
Core bond fund
Assets
Total nuclear decommissioning trust	58.1	40.6
Total rabbi trust	12.5	25.6
High-yield bond fund
Assets
Total nuclear decommissioning trust	29.6	25.0
Emerging markets bond fund
Assets
Total nuclear decommissioning trust	18.0	21.0
Combination debt/equity/other fund
Assets
Total nuclear decommissioning trust		20.1
Total rabbi trust	2.4	7.1
Alternative investments fund
Assets
Total nuclear decommissioning trust	32.7	23.2
Real estate securities fund
Assets
Total nuclear decommissioning trust	15.2	12.9
Cash equivalents
Assets
Total nuclear decommissioning trust	6.8	3.2
Total rabbi trust	0.2
Equity funds
Assets
Total rabbi trust	9.5
U.S. Treasury
Assets
Total nuclear decommissioning trust	46.1	47.7
U.S. Agency
Assets
Total nuclear decommissioning trust	0.4	0.5
State and local obligations
Assets
Total nuclear decommissioning trust	4.0	4.1
Corporate bonds
Assets
Total nuclear decommissioning trust	43.7	43.1
Foreign governments
Assets
Total nuclear decommissioning trust	0.1	0.1
Other
Assets
Total nuclear decommissioning trust	0.0	0.5
Debt securities
Assets
Total self-insured health plan trust	8.7	8.0
Fixed income funds
Assets
Total rabbi trust	19.6	13.1
Cash and cash equivalents
Assets
Total rabbi trust		0.5
Total self-insured health plan trust	1.8	3.5
Level 1
Assets
Equity securities	0.0
Total nuclear decommissioning trust	658.7	560.6
Total rabbi trust	44.2	0.5
Total self-insured health plan trust	6.5	8.0
Total Assets	709.4	569.1
Level 1 \| Equity securities
Assets
Equity securities	0.0
Total nuclear decommissioning trust	299.2	243.1
Total self-insured health plan trust	2.0	1.7
Level 1 \| Core bond fund
Assets
Total nuclear decommissioning trust	58.1	40.6
Total rabbi trust	12.5	0.0
Level 1 \| High-yield bond fund
Assets
Total nuclear decommissioning trust	29.6	25.0
Level 1 \| Emerging markets bond fund
Assets
Total nuclear decommissioning trust	18.0	21.0
Level 1 \| Combination debt/equity/other fund
Assets
Total nuclear decommissioning trust		20.1
Total rabbi trust	2.4	0.0
Level 1 \| Alternative investments fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 1 \| Real estate securities fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 1 \| Cash equivalents
Assets
Total nuclear decommissioning trust	6.8	3.2
Total rabbi trust	0.2
Level 1 \| Equity funds
Assets
Total rabbi trust	9.5
Level 1 \| U.S. Treasury
Assets
Total nuclear decommissioning trust	46.1	47.7
Level 1 \| U.S. Agency
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 1 \| State and local obligations
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 1 \| Corporate bonds
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 1 \| Foreign governments
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 1 \| Other
Assets
Total nuclear decommissioning trust	0.0	0.5
Level 1 \| Debt securities
Assets
Total self-insured health plan trust	2.7	2.8
Level 1 \| Fixed income funds
Assets
Total rabbi trust	19.6	0.0
Level 1 \| Cash and cash equivalents
Assets
Total rabbi trust		0.5
Total self-insured health plan trust	1.8	3.5
Level 2
Assets
Equity securities	31.4
Total nuclear decommissioning trust	48.2	47.8
Total rabbi trust	0.0	0.0
Total self-insured health plan trust	6.0	5.2
Total Assets	85.6	53.0
Level 2 \| Equity securities
Assets
Equity securities	31.4
Total nuclear decommissioning trust	0.0	0.0
Total self-insured health plan trust	0.0	0.0
Level 2 \| Core bond fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Total rabbi trust	0.0	0.0
Level 2 \| High-yield bond fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 2 \| Emerging markets bond fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 2 \| Combination debt/equity/other fund
Assets
Total nuclear decommissioning trust		0.0
Total rabbi trust	0.0	0.0
Level 2 \| Alternative investments fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 2 \| Real estate securities fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 2 \| Cash equivalents
Assets
Total nuclear decommissioning trust	0.0	0.0
Total rabbi trust	0.0
Level 2 \| Equity funds
Assets
Total rabbi trust	0.0
Level 2 \| U.S. Treasury
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 2 \| U.S. Agency
Assets
Total nuclear decommissioning trust	0.4	0.5
Level 2 \| State and local obligations
Assets
Total nuclear decommissioning trust	4.0	4.1
Level 2 \| Corporate bonds
Assets
Total nuclear decommissioning trust	43.7	43.1
Level 2 \| Foreign governments
Assets
Total nuclear decommissioning trust	0.1	0.1
Level 2 \| Other
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 2 \| Debt securities
Assets
Total self-insured health plan trust	6.0	5.2
Level 2 \| Fixed income funds
Assets
Total rabbi trust	0.0	0.0
Level 2 \| Cash and cash equivalents
Assets
Total rabbi trust		0.0
Total self-insured health plan trust	0.0	0.0
Level 3
Assets
Equity securities	0.0
Total nuclear decommissioning trust	0.0	0.0
Total rabbi trust	0.0	0.0
Total self-insured health plan trust	0.0	0.0
Total Assets	0.0	0.0
Level 3 \| Equity securities
Assets
Equity securities	0.0
Total nuclear decommissioning trust	0.0	0.0
Total self-insured health plan trust	0.0	0.0
Level 3 \| Core bond fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Total rabbi trust	0.0	0.0
Level 3 \| High-yield bond fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 3 \| Emerging markets bond fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 3 \| Combination debt/equity/other fund
Assets
Total nuclear decommissioning trust		0.0
Total rabbi trust	0.0	0.0
Level 3 \| Alternative investments fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 3 \| Real estate securities fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 3 \| Cash equivalents
Assets
Total nuclear decommissioning trust	0.0	0.0
Total rabbi trust	0.0
Level 3 \| Equity funds
Assets
Total rabbi trust	0.0
Level 3 \| U.S. Treasury
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 3 \| U.S. Agency
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 3 \| State and local obligations
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 3 \| Corporate bonds
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 3 \| Foreign governments
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 3 \| Other
Assets
Total nuclear decommissioning trust	0.0	0.0
Level 3 \| Debt securities
Assets
Total self-insured health plan trust	0.0	0.0
Level 3 \| Fixed income funds
Assets
Total rabbi trust	0.0	0.0
Level 3 \| Cash and cash equivalents
Assets
Total rabbi trust		0.0
Total self-insured health plan trust	0.0	0.0
NAV
Assets
Equity securities	0.0
Total nuclear decommissioning trust	61.8	43.7
Total rabbi trust	0.0	45.8
Total self-insured health plan trust	0.0	0.0
Total Assets	61.8	89.5
NAV \| Equity securities
Assets
Equity securities	0.0
Total nuclear decommissioning trust	0.0	0.0
Total self-insured health plan trust	0.0	0.0
NAV \| Core bond fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Total rabbi trust	0.0	25.6
NAV \| High-yield bond fund
Assets
Total nuclear decommissioning trust	0.0	0.0
NAV \| Emerging markets bond fund
Assets
Total nuclear decommissioning trust	0.0	0.0
NAV \| Combination debt/equity/other fund
Assets
Total nuclear decommissioning trust		0.0
Total rabbi trust	0.0	7.1
NAV \| Alternative investments fund
Assets
Total nuclear decommissioning trust	32.7	23.2
NAV \| Real estate securities fund
Assets
Total nuclear decommissioning trust	15.2	12.9
NAV \| Cash equivalents
Assets
Total nuclear decommissioning trust	0.0	0.0
Total rabbi trust	0.0
NAV \| Equity funds
Assets
Total rabbi trust	0.0
NAV \| U.S. Treasury
Assets
Total nuclear decommissioning trust	0.0	0.0
NAV \| U.S. Agency
Assets
Total nuclear decommissioning trust	0.0	0.0
NAV \| State and local obligations
Assets
Total nuclear decommissioning trust	0.0	0.0
NAV \| Corporate bonds
Assets
Total nuclear decommissioning trust	0.0	0.0
NAV \| Foreign governments
Assets
Total nuclear decommissioning trust	0.0	0.0
NAV \| Other
Assets
Total nuclear decommissioning trust	0.0	0.0
NAV \| Debt securities
Assets
Total self-insured health plan trust	0.0	0.0
NAV \| Fixed income funds
Assets
Total rabbi trust	0.0	13.1
NAV \| Cash and cash equivalents
Assets
Total rabbi trust		0.0
Total self-insured health plan trust	0.0	0.0
Domestic \| Equity securities
Assets
Total nuclear decommissioning trust	140.4	102.7
Domestic \| Level 1 \| Equity securities
Assets
Total nuclear decommissioning trust	126.5	95.1
Domestic \| Level 2 \| Equity securities
Assets
Total nuclear decommissioning trust	0.0	0.0
Domestic \| Level 3 \| Equity securities
Assets
Total nuclear decommissioning trust	0.0	0.0
Domestic \| NAV \| Equity securities
Assets
Total nuclear decommissioning trust	13.9	7.6
International \| Equity securities
Assets
Total nuclear decommissioning trust	74.0	63.8
International \| Level 1 \| Equity securities
Assets
Total nuclear decommissioning trust	74.0	63.8
International \| Level 2 \| Equity securities
Assets
Total nuclear decommissioning trust	0.0	0.0
International \| Level 3 \| Equity securities
Assets
Total nuclear decommissioning trust	0.0	0.0
International \| NAV \| Equity securities
Assets
Total nuclear decommissioning trust	$ 0.0	$ 0.0