0001711269-21-000039 | 10-Q | XBRL Viewer

Cover Page - shares	3 Months Ended
Cover Page - shares	Mar. 31, 2021	Apr. 30, 2021
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2021
Document Transition Report	false
Entity File Number	001-38515
Entity Registrant Name	EVERGY, INC.
Entity Tax Identification Number	82-2733395
Entity Incorporation, State or Country Code	MO
Entity Address, Address Line One	1200 Main Street
Entity Address, City or Town	Kansas City
Entity Address, State or Province	MO
Entity Address, Postal Zip Code	64105
City Area Code	816
Local Phone Number	556-2200
Title of 12(b) Security	Evergy, Inc. common stock
Trading Symbol	EVRG
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		229,267,502
Entity Central Index Key	0001711269
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q1
Amendment Flag	false
Document Fiscal Year Focus	2021
Evergy Kansas Central
Entity Information [Line Items]
Entity File Number	001-03523
Entity Registrant Name	EVERGY KANSAS CENTRAL, INC.
Entity Tax Identification Number	48-0290150
Entity Incorporation, State or Country Code	KS
Entity Address, Address Line One	818 South Kansas Avenue
Entity Address, City or Town	Topeka
Entity Address, State or Province	KS
Entity Address, Postal Zip Code	66612
City Area Code	785
Local Phone Number	575-6300
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		1
Entity Central Index Key	0000054507
Evergy Metro
Entity Information [Line Items]
Entity File Number	000-51873
Entity Registrant Name	EVERGY METRO, INC.
Entity Tax Identification Number	44-0308720
Entity Incorporation, State or Country Code	MO
Entity Address, Address Line One	1200 Main Street
Entity Address, City or Town	Kansas City
Entity Address, State or Province	MO
Entity Address, Postal Zip Code	64105
City Area Code	816
Local Phone Number	556-2200
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		1
Entity Central Index Key	0000054476

Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
CURRENT ASSETS:
Cash and cash equivalents	$ 482.0	$ 144.9
Receivables, net of allowance for credit losses of $23.6 and $19.3, respectively	247.5	273.9
Accounts receivable pledged as collateral	365.0	360.0
Fuel inventory and supplies	492.3	504.5
Income taxes receivable	59.9	62.9
Regulatory assets	255.9	206.2
Prepaid expenses and other assets	99.3	71.9
Total Current Assets	2,001.9	1,624.3
PROPERTY, PLANT AND EQUIPMENT, NET	20,102.2	19,951.0
OTHER ASSETS:
Regulatory assets	2,192.0	1,868.2
Nuclear decommissioning trust fund	686.5	652.1
Goodwill	2,336.6	2,336.6
Other	547.7	527.7
Total Other Assets	5,762.8	5,384.6
TOTAL ASSETS	28,020.1	27,114.8
CURRENT LIABILITIES:
Notes payable and commercial paper	1,295.0	315.0
Collateralized note payable	365.0	360.0
Accounts payable	345.3	654.0
Accrued taxes	231.2	143.8
Accrued interest	148.2	123.4
Regulatory liabilities	92.8	26.1
Asset retirement obligations	31.3	40.2
Accrued compensation and benefits	57.3	55.5
Other	144.8	182.6
Total Current Liabilities	3,244.4	2,355.8
LONG-TERM LIABILITIES:
Deferred income taxes	1,707.6	1,664.8
Unamortized investment tax credits	185.2	186.7
Regulatory liabilities	2,647.0	2,638.8
Pension and post-retirement liability	1,136.3	1,149.4
Asset retirement obligations	914.0	901.7
Other	300.6	308.2
Total Long-Term Liabilities	15,981.3	16,040.5
Commitments and Contingencies (Note 9)
Evergy, Inc. Shareholders' Equity:
Common stock - 600,000,000 shares authorized, without par value 226,995,620 and 226,836,670 shares issued, stated value	7,081.5	7,080.0
Retained earnings	1,772.8	1,702.8
Accumulated other comprehensive loss	(48.0)	(49.4)
Total Evergy, Inc. Shareholders' Equity	8,806.3	8,733.4
Noncontrolling Interests	(11.9)	(14.9)
Total Equity	8,794.4	8,718.5
TOTAL LIABILITIES AND EQUITY	28,020.1	27,114.8
Consolidated Entity Excluding Variable Interest Entities (VIE)
CURRENT LIABILITIES:
Current maturities of long-term debt	533.5	436.4
LONG-TERM LIABILITIES:
Long-term debt, net	9,090.6	9,190.9
Variable Interest Entities
CURRENT ASSETS:
PROPERTY, PLANT AND EQUIPMENT, NET	153.2	154.9
CURRENT LIABILITIES:
Current maturities of long-term debt	$ 0.0	$ 18.8

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Allowance for credit losses	$ 23.6	$ 19.3
Common stock - shares authorized (in shares)	600,000,000	600,000,000
Common stock - shares issued (in shares)	226,995,620	226,836,670

Consolidated Statements of Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
OPERATING REVENUES	$ 1,611.9	$ 1,116.7
OPERATING EXPENSES:
Fuel and purchased power	635.1	258.2
SPP network transmission costs	69.4	62.0
Operating and maintenance	275.5	288.2
Depreciation and amortization	219.3	218.5
Taxes other than income tax	94.9	92.3
Total Operating Expenses	1,294.2	919.2
INCOME FROM OPERATIONS	317.7	197.5
OTHER INCOME (EXPENSE):
Investment earnings	1.6	(0.8)
Other income	11.2	2.3
Other expense	(20.9)	(22.7)
Total Other Expense, Net	(8.1)	(21.2)
Interest expense	94.0	96.2
INCOME BEFORE INCOME TAXES	215.6	80.1
Interest expense	23.0	10.1
Equity in earnings of equity method investees, net of income taxes	2.0	2.2
NET INCOME	194.6	72.2
Less: Net income attributable to noncontrolling interests	3.0	2.8
Net income attributable to Evergy, Inc.	$ 191.6	$ 69.4
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)	$ 0.84	$ 0.31
Diluted earnings per common share (in dollars per share)	$ 0.84	$ 0.31
AVERAGE COMMON SHARES OUTSTANDING
Basic (in shares)	227.3	227.1
Diluted (in shares)	227.6	227.5
COMPREHENSIVE INCOME
Net income	$ 194.6	$ 72.2
Derivative hedging activity
Reclassification to expenses, net of tax	1.4	1.3
Derivative hedging activity, net of tax	1.4	1.3
Defined benefit pension plans
Total other comprehensive income	1.4	1.3
COMPREHENSIVE INCOME	196.0	73.5
Less: comprehensive income attributable to noncontrolling interest	3.0	2.8
COMPREHENSIVE INCOME	$ 193.0	$ 70.7

Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	$ 194.6	$ 72.2
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	219.3	218.5
Amortization of nuclear fuel	13.3	14.4
Amortization of deferred refueling outage	5.8	6.3
Amortization of corporate-owned life insurance	6.7	6.5
Non-cash compensation	3.1	4.6
Net deferred income taxes and credits	20.0	8.1
Allowance for equity funds used during construction	(7.5)	(1.8)
Payments for asset retirement obligations	(0.8)	(3.1)
Equity in earnings of equity method investees, net of income taxes	(2.0)	(2.2)
Income from corporate-owned life insurance	(0.6)	(1.9)
Other	0.2	0.3
Changes in working capital items:
Accounts receivable	26.3	42.6
Accounts receivable pledged as collateral	(5.0)	17.0
Fuel inventory and supplies	12.4	(17.1)
Prepaid expenses and other current assets	(82.6)	0.4
Accounts payable	(242.4)	(153.4)
Accrued taxes	90.4	83.0
Other current liabilities	50.6	(9.4)
Changes in other assets	(324.6)	39.4
Changes in other liabilities	(5.8)	(3.8)
Cash Flows from Operating Activities	(28.6)	320.6
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(467.7)	(354.4)
Purchase of securities - trusts	(44.6)	(18.8)
Sale of securities - trusts	40.9	15.0
Investment in corporate-owned life insurance	(1.0)	(2.0)
Proceeds from investment in corporate-owned life insurance	0.8	30.8
Other investing activities	(3.6)	(4.0)
Cash Flows used in Investing Activities	(475.2)	(333.4)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	980.0	493.1
Collateralized short-term borrowings, net	5.0	(17.0)
Retirements of long-term debt	(1.1)	(1.1)
Retirements of long-term debt of variable interest entities	(18.8)	(32.3)
Borrowings against cash surrender value of corporate-owned life insurance	0.4	0.0
Repayment of borrowings against cash surrender value of corporate-owned life insurance	(0.1)	(27.8)
Cash dividends paid	(121.4)	(114.5)
Other financing activities	(3.1)	(6.4)
Cash Flows from Financing Activities	840.9	294.0
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	337.1	281.2
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	144.9	23.2
End of period	$ 482.0	$ 304.4

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, 2019		226,641,443
Beginning balance at Dec. 31, 2019	$ 8,545.3	$ 7,070.4	$ 1,551.5	$ (50.0)	$ (26.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	72.2		69.4		2.8
Issuance of stock compensation and reinvested dividends, net of tax withholding (in shares)		97,305
Issuance of stock compensation and reinvested dividends, net of tax withholding	(3.0)	$ (3.0)
Dividends declared on common stock	(114.5)		(114.5)
Dividend equivalents declared	(0.7)		(0.7)
Stock compensation expense	4.6	4.6
Unearned compensation
Derivative hedging activity, net of tax	1.3			1.3
Other	0.2	$ 0.2
Ending balance (in shares) at Mar. 31, 2020		226,738,748
Ending balance at Mar. 31, 2020	8,505.4	$ 7,072.2	1,505.7	(48.7)	(23.8)
Beginning balance (in shares) at Dec. 31, 2020		226,836,670
Beginning balance at Dec. 31, 2020	8,718.5	$ 7,080.0	1,702.8	(49.4)	(14.9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	194.6		191.6		3.0
Issuance of stock compensation and reinvested dividends, net of tax withholding (in shares)		104,896
Issuance of stock compensation and reinvested dividends, net of tax withholding	(1.1)	$ (1.1)
Issuance of restricted common stock (in shares)		54,054
Issuance of restricted common stock	2.9	$ 2.9
Dividends declared on common stock	(121.4)		(121.4)
Dividend equivalents declared	(0.2)		(0.2)
Stock compensation expense	2.6	2.6
Unearned compensation
Issuance of restricted common stock	(2.9)	(2.9)
Compensation expense recognized	0.4	0.4
Derivative hedging activity, net of tax	1.4			1.4
Other	(0.4)	$ (0.4)
Ending balance (in shares) at Mar. 31, 2021		226,995,620
Ending balance at Mar. 31, 2021	$ 8,794.4	$ 7,081.5	$ 1,772.8	$ (48.0)	$ (11.9)

Consolidated Statements of Changes in Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Stockholders' Equity [Abstract]
Dividends declared on common stock (in dollars per share)	$ 0.535	$ 0.505

Consolidated Balance Sheets - Evergy Kansas Central, Inc - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
CURRENT ASSETS:
Cash and cash equivalents	$ 482.0	$ 144.9
Receivables, net of allowance for credit losses of $8.8 and $7.5, respectively	247.5	273.9
Accounts receivable pledged as collateral	365.0	360.0
Fuel inventory and supplies	492.3	504.5
Income taxes receivable	59.9	62.9
Regulatory assets	255.9	206.2
Prepaid expenses and other assets	99.3	71.9
Total Current Assets	2,001.9	1,624.3
PROPERTY, PLANT AND EQUIPMENT, NET	20,102.2	19,951.0
OTHER ASSETS:
Regulatory assets	2,192.0	1,868.2
Nuclear decommissioning trust fund	686.5	652.1
Other	547.7	527.7
Total Other Assets	5,762.8	5,384.6
TOTAL ASSETS	28,020.1	27,114.8
CURRENT LIABILITIES:
Notes payable and commercial paper	1,295.0	315.0
Collateralized note payable	365.0	360.0
Accounts payable	345.3	654.0
Accrued taxes	231.2	143.8
Accrued interest	148.2	123.4
Regulatory liabilities	92.8	26.1
Asset retirement obligations	31.3	40.2
Accrued compensation and benefits	57.3	55.5
Other	144.8	182.6
Total Current Liabilities	3,244.4	2,355.8
LONG-TERM LIABILITIES:
Deferred income taxes	1,707.6	1,664.8
Unamortized investment tax credits	185.2	186.7
Regulatory liabilities	2,647.0	2,638.8
Pension and post-retirement liability	1,136.3	1,149.4
Asset retirement obligations	914.0	901.7
Other	300.6	308.2
Total Long-Term Liabilities	15,981.3	16,040.5
Commitments and Contingencies (Note 9)
Evergy, Inc. Shareholders' Equity:
Common stock	7,081.5	7,080.0
Retained earnings	1,772.8	1,702.8
Total Evergy, Inc. Shareholders' Equity	8,806.3	8,733.4
Noncontrolling Interests	(11.9)	(14.9)
Total Equity	8,794.4	8,718.5
TOTAL LIABILITIES AND EQUITY	28,020.1	27,114.8
Evergy Kansas Central
CURRENT ASSETS:
Cash and cash equivalents	96.1	28.7
Receivables, net of allowance for credit losses of $8.8 and $7.5, respectively	209.1	218.9
Related party receivables	11.8	6.7
Accounts receivable pledged as collateral	185.0	180.0
Fuel inventory and supplies	271.2	276.4
Income taxes receivable	19.0	25.3
Regulatory assets	122.4	96.2
Prepaid expenses and other assets	49.7	27.4
Total Current Assets	964.3	859.6
PROPERTY, PLANT AND EQUIPMENT, NET	10,246.4	10,193.6
OTHER ASSETS:
Regulatory assets	900.3	800.1
Nuclear decommissioning trust fund	327.7	309.8
Other	279.6	271.1
Total Other Assets	1,507.6	1,381.0
TOTAL ASSETS	12,871.5	12,589.1
CURRENT LIABILITIES:
Notes payable and commercial paper	245.0	50.0
Collateralized note payable	185.0	180.0
Accounts payable	150.2	280.1
Related party payables	10.1	21.7
Accrued taxes	149.6	101.5
Accrued interest	92.0	72.8
Regulatory liabilities	12.9	11.9
Asset retirement obligations	11.2	11.2
Accrued compensation and benefits	24.5	11.1
Other	105.4	133.5
Total Current Liabilities	985.9	892.6
LONG-TERM LIABILITIES:
Deferred income taxes	841.8	824.5
Unamortized investment tax credits	64.6	65.7
Regulatory liabilities	1,468.3	1,461.0
Pension and post-retirement liability	546.1	560.3
Asset retirement obligations	421.9	416.0
Other	148.8	156.7
Total Long-Term Liabilities	7,423.7	7,415.7
Commitments and Contingencies (Note 9)
Evergy, Inc. Shareholders' Equity:
Common stock	2,737.6	2,737.6
Retained earnings	1,736.2	1,558.1
Total Evergy, Inc. Shareholders' Equity	4,473.8	4,295.7
Noncontrolling Interests	(11.9)	(14.9)
Total Equity	4,461.9	4,280.8
TOTAL LIABILITIES AND EQUITY	12,871.5	12,589.1
Consolidated Entity Excluding Variable Interest Entities (VIE)
CURRENT LIABILITIES:
Current maturities of long-term debt	533.5	436.4
LONG-TERM LIABILITIES:
Long-term debt, net	9,090.6	9,190.9
Consolidated Entity Excluding Variable Interest Entities (VIE) \| Evergy Kansas Central
CURRENT ASSETS:
PROPERTY, PLANT AND EQUIPMENT, NET	10,246.4	10,193.6
LONG-TERM LIABILITIES:
Long-term debt, net	3,932.2	3,931.5
Variable Interest Entities
CURRENT ASSETS:
PROPERTY, PLANT AND EQUIPMENT, NET	153.2	154.9
CURRENT LIABILITIES:
Current maturities of long-term debt	0.0	18.8
Variable Interest Entities \| Evergy Kansas Central
CURRENT ASSETS:
PROPERTY, PLANT AND EQUIPMENT, NET	153.2	154.9
CURRENT LIABILITIES:
Current maturities of long-term debt	$ 0.0	$ 18.8

Consolidated Balance Sheets - Evergy Kansas Central, Inc (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Allowance for credit losses	$ 23.6	$ 19.3
Common stock - shares authorized (in shares)	600,000,000	600,000,000
Common stock - shares issued (in shares)	226,995,620	226,836,670
Evergy Kansas Central
Allowance for credit losses	$ 8.8	$ 7.5
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 Income - Evergy Kansas Central, Inc - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
OPERATING REVENUES	$ 1,611.9	$ 1,116.7
OPERATING EXPENSES:
Fuel and purchased power	635.1	258.2
SPP network transmission costs	69.4	62.0
Operating and maintenance	275.5	288.2
Depreciation and amortization	219.3	218.5
Taxes other than income tax	94.9	92.3
Total Operating Expenses	1,294.2	919.2
INCOME FROM OPERATIONS	317.7	197.5
OTHER INCOME (EXPENSE):
Investment loss	1.6	(0.8)
Other income	11.2	2.3
Other expense	(20.9)	(22.7)
Total Other Expense, Net	(8.1)	(21.2)
Interest expense	94.0	96.2
INCOME BEFORE INCOME TAXES	215.6	80.1
Income tax expense (benefit)	23.0	10.1
Equity in earnings of equity method investees, net of income taxes	2.0	2.2
NET INCOME	194.6	72.2
Less: Net income attributable to noncontrolling interests	3.0	2.8
Net income attributable to Evergy, Inc.	191.6	69.4
Evergy Kansas Central
OPERATING REVENUES	901.1	560.1
OPERATING EXPENSES:
Fuel and purchased power	294.8	99.2
SPP network transmission costs	69.4	62.0
Operating and maintenance	130.8	123.7
Depreciation and amortization	115.5	112.1
Taxes other than income tax	50.3	48.6
Total Operating Expenses	660.8	445.6
INCOME FROM OPERATIONS	240.3	114.5
OTHER INCOME (EXPENSE):
Investment loss	(0.5)	(1.7)
Other income	6.5	2.1
Other expense	(9.2)	(11.5)
Total Other Expense, Net	(3.2)	(11.1)
Interest expense	40.3	41.6
INCOME BEFORE INCOME TAXES	196.8	61.8
Income tax expense (benefit)	16.6	7.8
Equity in earnings of equity method investees, net of income taxes	0.9	1.2
NET INCOME	181.1	55.2
Less: Net income attributable to noncontrolling interests	3.0	2.8
Net income attributable to Evergy, Inc.	$ 178.1	$ 52.4

Consolidated Statements of Cash Flows - Evergy Kansas Central, Inc - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	$ 194.6	$ 72.2
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	219.3	218.5
Amortization of nuclear fuel	13.3	14.4
Amortization of deferred refueling outage	5.8	6.3
Amortization of corporate-owned life insurance	6.7	6.5
Non-cash compensation	3.1	4.6
Net deferred income taxes and credits	20.0	8.1
Allowance for equity funds used during construction	(7.5)	(1.8)
Payments for asset retirement obligations	(0.8)	(3.1)
Equity in earnings of equity method investees, net of income taxes	(2.0)	(2.2)
Income from corporate-owned life insurance	(0.6)	(1.9)
Other	0.2	0.3
Changes in working capital items:
Accounts receivable	26.3	42.6
Accounts receivable pledged as collateral	(5.0)	17.0
Fuel inventory and supplies	12.4	(17.1)
Prepaid expenses and other current assets	(82.6)	0.4
Accounts payable	(242.4)	(153.4)
Accrued taxes	90.4	83.0
Other current liabilities	50.6	(9.4)
Changes in other assets	(324.6)	39.4
Changes in other liabilities	(5.8)	(3.8)
Cash Flows from Operating Activities	(28.6)	320.6
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(467.7)	(354.4)
Purchase of securities - trusts	(44.6)	(18.8)
Sale of securities - trusts	40.9	15.0
Investment in corporate-owned life insurance	(1.0)	(2.0)
Proceeds from investment in corporate-owned life insurance	0.8	30.8
Other investing activities	(3.6)	(4.0)
Cash Flows used in Investing Activities	(475.2)	(333.4)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	980.0	493.1
Collateralized short-term debt, net	5.0	(17.0)
Retirements of long-term debt	(1.1)	(1.1)
Retirements of long-term debt of variable interest entities	(18.8)	(32.3)
Borrowings against cash surrender value of corporate-owned life insurance	0.4	0.0
Repayment of borrowings against cash surrender value of corporate-owned life insurance	(0.1)	(27.8)
Cash dividends paid	(121.4)	(114.5)
Other financing activities	(3.1)	(6.4)
Cash Flows from Financing Activities	840.9	294.0
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	337.1	281.2
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	144.9	23.2
End of period	482.0	304.4
Evergy Kansas Central
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	181.1	55.2
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	115.5	112.1
Amortization of nuclear fuel	6.6	7.2
Amortization of deferred refueling outage	2.9	3.1
Amortization of corporate-owned life insurance	6.7	6.5
Net deferred income taxes and credits	7.9	(16.0)
Allowance for equity funds used during construction	(4.7)	(1.9)
Payments for asset retirement obligations	0.0	(0.2)
Equity in earnings of equity method investees, net of income taxes	(0.9)	(1.2)
Income from corporate-owned life insurance	(0.6)	(1.9)
Other	(1.4)	(1.4)
Changes in working capital items:
Accounts receivable	4.7	9.1
Accounts receivable pledged as collateral	(5.0)	12.0
Fuel inventory and supplies	5.4	(4.3)
Prepaid expenses and other current assets	(53.7)	(1.2)
Accounts payable	(109.9)	(26.3)
Accrued taxes	54.4	68.4
Other current liabilities	2.1	(11.0)
Changes in other assets	(94.0)	13.9
Changes in other liabilities	(16.5)	(10.5)
Cash Flows from Operating Activities	100.6	211.6
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(212.7)	(158.2)
Purchase of securities - trusts	(36.3)	(6.0)
Sale of securities - trusts	35.3	4.4
Investment in corporate-owned life insurance	(1.0)	(2.0)
Proceeds from investment in corporate-owned life insurance	0.8	30.8
Other investing activities	(0.1)	0.2
Cash Flows used in Investing Activities	(214.0)	(130.8)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	195.0	120.8
Collateralized short-term debt, net	5.0	(12.0)
Retirements of long-term debt of variable interest entities	(18.8)	(32.3)
Borrowings against cash surrender value of corporate-owned life insurance	0.4	0.0
Repayment of borrowings against cash surrender value of corporate-owned life insurance	(0.1)	(27.8)
Cash dividends paid	0.0	(60.0)
Other financing activities	(0.7)	(1.7)
Cash Flows from Financing Activities	180.8	(13.0)
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	67.4	67.8
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	28.7	5.2
End of period	$ 96.1	$ 73.0

Consolidated Statements of Changes in Equity - Evergy Kansas Central, Inc - USD ($) $ in Millions	Total	Common Stock	Retained earnings	Non-controlling interests	Evergy Kansas Central	Evergy Kansas Central Common Stock	Evergy Kansas Central Retained earnings	Evergy Kansas Central Non-controlling interests
Beginning balance (in shares) at Dec. 31, 2019		226,641,443				1
Beginning balance at Dec. 31, 2019	$ 8,545.3	$ 7,070.4	$ 1,551.5	$ (26.6)	$ 4,205.0	$ 2,737.6	$ 1,494.0	$ (26.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	72.2		69.4	2.8	55.2		52.4	2.8
Issuance of stock compensation and reinvested dividends, net of tax withholding (in shares)		97,305
Issuance of stock compensation and reinvested dividends, net of tax withholding	(3.0)	$ (3.0)
Dividends declared on common stock	(114.5)		(114.5)		(60.0)		(60.0)
Stock compensation expense	4.6	4.6
Stockholders' Equity, Other	0.2	$ 0.2
Ending balance (in shares) at Mar. 31, 2020		226,738,748				1
Ending balance at Mar. 31, 2020	8,505.4	$ 7,072.2	1,505.7	(23.8)	4,200.2	$ 2,737.6	1,486.4	(23.8)
Beginning balance (in shares) at Dec. 31, 2020		226,836,670				1
Beginning balance at Dec. 31, 2020	8,718.5	$ 7,080.0	1,702.8	(14.9)	4,280.8	$ 2,737.6	1,558.1	(14.9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	194.6		191.6	3.0	181.1		178.1	3.0
Issuance of stock compensation and reinvested dividends, net of tax withholding (in shares)		104,896
Issuance of stock compensation and reinvested dividends, net of tax withholding	(1.1)	$ (1.1)
Dividends declared on common stock	(121.4)		(121.4)
Stock compensation expense	2.6	2.6
Stockholders' Equity, Other	(0.4)	$ (0.4)
Ending balance (in shares) at Mar. 31, 2021		226,995,620				1
Ending balance at Mar. 31, 2021	$ 8,794.4	$ 7,081.5	$ 1,772.8	$ (11.9)	$ 4,461.9	$ 2,737.6	$ 1,736.2	$ (11.9)

- Definition

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

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+ Details

Consolidated Balance Sheets - Evergy Metro, Inc - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
CURRENT ASSETS:
Cash and cash equivalents	$ 482.0	$ 144.9
Receivables, net of allowance for credit losses of $9.9 and $8.1, respectively	247.5	273.9
Accounts receivable pledged as collateral	365.0	360.0
Fuel inventory and supplies	492.3	504.5
Income taxes receivable	59.9	62.9
Regulatory assets	255.9	206.2
Total Current Assets	2,001.9	1,624.3
PROPERTY, PLANT AND EQUIPMENT, NET	20,102.2	19,951.0
OTHER ASSETS:
Regulatory assets	2,192.0	1,868.2
Nuclear decommissioning trust fund	686.5	652.1
Other	547.7	527.7
Total Other Assets	5,762.8	5,384.6
TOTAL ASSETS	28,020.1	27,114.8
CURRENT LIABILITIES:
Notes payable and commercial paper	1,295.0	315.0
Collateralized note payable	365.0	360.0
Accounts payable	345.3	654.0
Accrued taxes	231.2	143.8
Accrued interest	148.2	123.4
Regulatory liabilities	92.8	26.1
Asset retirement obligations	31.3	40.2
Accrued compensation and benefits	57.3	55.5
Other	144.8	182.6
Total Current Liabilities	3,244.4	2,355.8
LONG-TERM LIABILITIES:
Deferred income taxes	1,707.6	1,664.8
Unamortized investment tax credits	185.2	186.7
Regulatory liabilities	2,647.0	2,638.8
Pension and post-retirement liability	1,136.3	1,149.4
Asset retirement obligations	914.0	901.7
Other	300.6	308.2
Total Long-Term Liabilities	15,981.3	16,040.5
Commitments and Contingencies (Note 9)
EQUITY:
Common stock	7,081.5	7,080.0
Retained earnings	1,772.8	1,702.8
Accumulated other comprehensive loss	(48.0)	(49.4)
Total Evergy, Inc. Shareholders' Equity	8,806.3	8,733.4
TOTAL LIABILITIES AND EQUITY	28,020.1	27,114.8
Evergy Metro
CURRENT ASSETS:
Cash and cash equivalents	8.4	71.6
Receivables, net of allowance for credit losses of $9.9 and $8.1, respectively	37.9	45.0
Related party receivables	409.2	225.6
Accounts receivable pledged as collateral	130.0	130.0
Fuel inventory and supplies	167.5	170.4
Income taxes receivable	0.0	3.2
Regulatory assets	60.0	82.0
Prepaid expenses	25.3	22.9
Other assets	16.9	14.2
Total Current Assets	855.2	764.9
PROPERTY, PLANT AND EQUIPMENT, NET	7,189.2	7,141.2
OTHER ASSETS:
Regulatory assets	515.5	533.5
Nuclear decommissioning trust fund	358.8	342.3
Other	134.8	133.9
Total Other Assets	1,009.1	1,009.7
TOTAL ASSETS	9,053.5	8,915.8
CURRENT LIABILITIES:
Notes payable and commercial paper	115.0	0.0
Collateralized note payable	130.0	130.0
Accounts payable	168.5	280.1
Related party payables	1.5	0.1
Accrued taxes	89.2	34.9
Accrued interest	39.7	30.0
Regulatory liabilities	73.1	8.0
Asset retirement obligations	13.2	21.2
Accrued compensation and benefits	32.9	44.4
Other	30.2	37.3
Total Current Liabilities	693.3	586.0
LONG-TERM LIABILITIES:
Long-term debt, net	2,923.5	2,923.0
Deferred income taxes	545.7	558.8
Unamortized investment tax credits	118.1	118.5
Regulatory liabilities	904.6	899.4
Pension and post-retirement liability	564.8	565.1
Asset retirement obligations	361.6	357.7
Other	149.2	148.1
Total Long-Term Liabilities	5,567.5	5,570.6
Commitments and Contingencies (Note 9)
EQUITY:
Common stock	1,563.1	1,563.1
Retained earnings	1,225.0	1,191.5
Accumulated other comprehensive loss	4.6	4.6
Total Evergy, Inc. Shareholders' Equity	2,792.7	2,759.2
TOTAL LIABILITIES AND EQUITY	$ 9,053.5	$ 8,915.8

Consolidated Balance Sheets - Evergy Metro, Inc (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Allowance for credit losses	$ 23.6	$ 19.3
Common stock - shares authorized (in shares)	600,000,000	600,000,000
Common stock - shares issued (in shares)	226,995,620	226,836,670
Evergy Metro
Allowance for credit losses	$ 9.9	$ 8.1
Common stock - shares authorized (in shares)	1,000	1,000
Common stock - shares issued (in shares)	1	1

Consolidated Statements of Comprehensive Income - Evergy Metro, Inc - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
OPERATING REVENUES	$ 1,611.9	$ 1,116.7
OPERATING EXPENSES:
Fuel and purchased power	635.1	258.2
Operating and maintenance	275.5	288.2
Depreciation and amortization	219.3	218.5
Taxes other than income tax	94.9	92.3
Total Operating Expenses	1,294.2	919.2
INCOME FROM OPERATIONS	317.7	197.5
OTHER INCOME (EXPENSE):
Investment earnings	1.6	(0.8)
Other income	11.2	2.3
Other expense	(20.9)	(22.7)
Total Other Expense, Net	(8.1)	(21.2)
Interest expense	94.0	96.2
INCOME BEFORE INCOME TAXES	215.6	80.1
Interest expense	23.0	10.1
Net income attributable to Evergy, Inc.	191.6	69.4
Derivative hedging activity
Reclassification to expenses, net of tax	1.4	1.3
Derivative hedging activity, net of tax	1.4	1.3
Total other comprehensive income	1.4	1.3
COMPREHENSIVE INCOME	193.0	70.7
Evergy Metro
OPERATING REVENUES	516.2	375.5
OPERATING EXPENSES:
Fuel and purchased power	241.2	92.5
Operating and maintenance	93.4	105.9
Depreciation and amortization	78.4	81.4
Taxes other than income tax	32.0	32.0
Total Operating Expenses	445.0	311.8
INCOME FROM OPERATIONS	71.2	63.7
OTHER INCOME (EXPENSE):
Investment earnings	0.1	0.5
Other income	4.0	0.0
Other expense	(8.4)	(7.4)
Total Other Expense, Net	(4.3)	(6.9)
Interest expense	28.3	28.6
INCOME BEFORE INCOME TAXES	38.6	28.2
Interest expense	5.1	2.6
Net income attributable to Evergy, Inc.	33.5	25.6
Derivative hedging activity
Reclassification to expenses, net of tax	0.0	(0.1)
Derivative hedging activity, net of tax	0.0	(0.1)
Total other comprehensive income	0.0	(0.1)
COMPREHENSIVE INCOME	$ 33.5	$ 25.5

Consolidated Statements of Cash Flows - Evergy Metro, Inc - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	$ 194.6	$ 72.2
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	219.3	218.5
Amortization of nuclear fuel	13.3	14.4
Amortization of deferred refueling outage	5.8	6.3
Net deferred income taxes and credits	20.0	8.1
Allowance for equity funds used during construction	(7.5)	(1.8)
Payments for asset retirement obligations	(0.8)	(3.1)
Other	0.2	0.3
Changes in working capital items:
Accounts receivable	26.3	42.6
Accounts receivable pledged as collateral	(5.0)	17.0
Fuel inventory and supplies	12.4	(17.1)
Prepaid expenses and other current assets	(82.6)	0.4
Accounts payable	(242.4)	(153.4)
Accrued taxes	90.4	83.0
Other current liabilities	50.6	(9.4)
Changes in other assets	(324.6)	39.4
Changes in other liabilities	(5.8)	(3.8)
Cash Flows from Operating Activities	(28.6)	320.6
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(467.7)	(354.4)
Purchase of securities - trusts	(44.6)	(18.8)
Sale of securities - trusts	40.9	15.0
Other investing activities	(3.6)	(4.0)
Cash Flows used in Investing Activities	(475.2)	(333.4)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	980.0	493.1
Collateralized short-term debt, net	5.0	(17.0)
Retirements of long-term debt	(1.1)	(1.1)
Cash dividends paid	(121.4)	(114.5)
Other financing activities	(3.1)	(6.4)
Cash Flows from Financing Activities	840.9	294.0
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	337.1	281.2
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	144.9	23.2
End of period	482.0	304.4
Evergy Metro
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	33.5	25.6
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	78.4	81.4
Amortization of nuclear fuel	6.6	7.2
Amortization of deferred refueling outage	2.9	3.2
Net deferred income taxes and credits	(23.2)	(10.2)
Allowance for equity funds used during construction	(2.6)	0.1
Payments for asset retirement obligations	(0.3)	(1.3)
Other	(0.1)	(0.1)
Changes in working capital items:
Accounts receivable	(274.6)	(22.3)
Accounts receivable pledged as collateral	0.0	5.0
Fuel inventory and supplies	2.9	(12.1)
Prepaid expenses and other current assets	15.9	(8.2)
Accounts payable	(85.6)	(76.0)
Accrued taxes	57.5	39.0
Other current liabilities	57.3	8.3
Changes in other assets	10.2	17.7
Changes in other liabilities	4.1	7.9
Cash Flows from Operating Activities	(117.1)	65.2
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(160.2)	(135.7)
Purchase of securities - trusts	(8.4)	(12.8)
Sale of securities - trusts	5.6	10.6
Net money pool lending	100.0	0.0
Other investing activities	2.0	0.1
Cash Flows used in Investing Activities	(61.0)	(137.8)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	115.0	260.7
Collateralized short-term debt, net	0.0	(5.0)
Cash dividends paid	0.0	(60.0)
Other financing activities	(0.1)	0.0
Cash Flows from Financing Activities	114.9	195.7
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(63.2)	123.1
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	71.6	2.0
End of period	$ 8.4	$ 125.1

Consolidated Statements of Changes in Equity - Evergy Metro, Inc - USD ($) $ in Millions	Total	Common Stock	Retained earnings	Evergy Metro	Evergy Metro Common Stock	Evergy Metro Retained earnings	Evergy Metro AOCI - Net gains (losses) on cash flow hedges
Beginning balance (in shares) at Dec. 31, 2019		226,641,443			1
Beginning balance at Dec. 31, 2019	$ 8,545.3	$ 7,070.4	$ 1,551.5	$ 2,580.7	$ 1,563.1	$ 1,012.8	$ 4.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	72.2		69.4	25.6		25.6
Dividends declared on common stock	(114.5)		(114.5)	(60.0)		(60.0)
Derivative hedging activity, net of tax	1.3			(0.1)			(0.1)
Ending balance (in shares) at Mar. 31, 2020		226,738,748			1
Ending balance at Mar. 31, 2020	8,505.4	$ 7,072.2	1,505.7	2,546.2	$ 1,563.1	978.4	4.7
Beginning balance (in shares) at Dec. 31, 2020		226,836,670			1
Beginning balance at Dec. 31, 2020	8,718.5	$ 7,080.0	1,702.8	2,759.2	$ 1,563.1	1,191.5	4.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	194.6		191.6	33.5		33.5
Dividends declared on common stock	(121.4)		(121.4)
Derivative hedging activity, net of tax	1.4			0.0
Ending balance (in shares) at Mar. 31, 2021		226,995,620			1
Ending balance at Mar. 31, 2021	$ 8,794.4	$ 7,081.5	$ 1,772.8	$ 2,792.7	$ 1,563.1	$ 1,225.0	$ 4.6

- Definition

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

ORGANIZATION AND BASIS OF PRESENTATION

3 Months Ended

Mar. 31, 2021

Accounting Policies [Abstract]

ORGANIZATION AND BASIS OF PRESENTATION

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 purchased power 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.

Basis of Presentation

These unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles (GAAP) for interim financial information and with the instructions to Form 10-Q and Regulation S-X. Accordingly, these unaudited consolidated financial statements do not include all of the information and notes required by GAAP for annual financial statements and should be read in conjunction with the consolidated financial statements in the Evergy Companies' combined 2020 Form 10-K.

These unaudited consolidated financial statements, in the opinion of management, reflect all normal recurring adjustments necessary to fairly present the unaudited consolidated financial statements for each of the Evergy Companies for these interim periods. In preparing financial statements that conform to GAAP, management must make estimates and assumptions that affect the reported amounts of assets and liabilities, the reported amounts of revenues and expenses, and the disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates.

Principles of Consolidation

Each of Evergy's, Evergy Kansas Central's and Evergy Metro's unaudited 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).

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.



	March 31 2021		December 31 2020
Evergy	(millions)
Fuel inventory	$	127.5	$	145.0
Supplies	364.8		359.5
Fuel inventory and supplies	$	492.3	$	504.5
Evergy Kansas Central
Fuel inventory	$	75.5	$	79.3
Supplies	195.7		197.1
Fuel inventory and supplies	$	271.2	$	276.4
Evergy Metro
Fuel inventory	$	36.6	$	44.9
Supplies	130.9		125.5
Fuel inventory and supplies	$	167.5	$	170.4

Property, Plant and Equipment

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


March 31, 2021	Evergy			Evergy Kansas Central			Evergy Metro
		(millions)
Electric plant in service		$	29,378.9		$	14,239.8		$	11,414.0
Electric plant acquisition adjustment		724.3			724.3			—
Accumulated depreciation		(11,146.4)			(5,356.6)			(4,597.8)
Plant in service, net		18,956.8			9,607.5			6,816.2
Construction work in progress		999.8			565.8			300.5
Nuclear fuel, net		144.7			72.2			72.5
Plant to be retired, net(a)		0.9			0.9			—
Property, plant and equipment, net		$	20,102.2		$	10,246.4		$	7,189.2

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, net		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			—
Property, plant and equipment, net		$	19,951.0		$	10,193.6		$	7,141.2

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

Other Income (Expense), Net

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



Three Months Ended March 31	2021		2020
Evergy	(millions)
Non-service cost component of net benefit cost	$	(14.8)	$	(16.2)
Other	(6.1)		(6.5)
Other expense	$	(20.9)	$	(22.7)
Evergy Kansas Central
Non-service cost component of net benefit cost	$	(3.6)	$	(5.6)
Other	(5.6)		(5.9)
Other expense	$	(9.2)	$	(11.5)
Evergy Metro
Non-service cost component of net benefit cost	$	(7.9)	$	(6.9)
Other	(0.5)		(0.5)
Other expense	$	(8.4)	$	(7.4)

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), performance shares, restricted stock and a warrant. Evergy computes the dilutive effects of potential issuances of common shares using the treasury stock method.

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



Three Months Ended March 31	2021		2020
Income	(millions, except per share amounts)
Net income	$	194.6	$	72.2
Less: Net income attributable to noncontrolling interests	3.0		2.8
Net income attributable to Evergy, Inc.	$	191.6	$	69.4
Common Shares Outstanding
Weighted average number of common shares outstanding - basic	227.3		227.1
Add: Effect of dilutive securities	0.3		0.4
Weighted average number of common shares outstanding - dilutive	227.6		227.5
Basic and Diluted EPS	$	0.84	$	0.31

Anti-dilutive shares excluded from the computation of diluted EPS for the three months ended March 31, 2021, were 353,806 RSUs with performance measures and 3,950,000 common shares issuable pursuant to a warrant. Anti-dilutive shares excluded from the computation of diluted EPS for the three months ended March 31, 2020, were 175,991 RSUs with performance measures and 58,714 RSUs with only service requirements.

Dividends Declared

In May 2021, Evergy's Board of Directors (Evergy Board) declared a quarterly dividend of $0.535 per share on Evergy's common stock. The common dividend is payable June 21, 2021, to shareholders of record as of May 21, 2021.

Supplemental Cash Flow Information


Evergy
Three Months Ended March 31	2021		2020
Cash paid for (received from):	(millions)
Interest, net of amounts capitalized	$	78.6	$	86.5
Interest of VIEs	0.2		0.6
Income taxes, net of refunds	2.6		0.2
Right-of-use assets obtained in exchange for new operating lease liabilities	2.2		2.6
Right-of-use assets obtained in exchange for new finance lease liabilities	0.2		3.1
Non-cash investing transactions:
Property, plant and equipment additions	104.4		75.7

Non-cash financing transactions:
Issuance of stock for compensation and reinvested dividends	0.7		0.9


Evergy Kansas Central
Three Months Ended March 31	2021		2020
Cash paid for (received from):	(millions)
Interest, net of amounts capitalized	$	31.2	$	37.4
Interest of VIEs	0.2		0.6
Income taxes, net of refunds	2.6		0.2
Right-of-use assets obtained in exchange for new operating lease liabilities	1.5		2.6
Right-of-use assets obtained in exchange for new finance lease liabilities	0.2		1.9
Non-cash investing transactions:
Property, plant and equipment additions	45.4		52.5


Evergy Metro
Three Months Ended March 31	2021		2020
Cash paid for (received from):	(millions)
Interest, net of amounts capitalized	$	18.6	$	18.7
Income taxes, net of refunds	(1.6)		—
Right-of-use assets obtained in exchange for new operating lease liabilities	0.7		—
Right-of-use assets obtained in exchange for new finance lease liabilities	—		1.2
Non-cash investing transactions:
Property, plant and equipment additions	34.6		17.8

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. This 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 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 winter weather event and inclusive of the aforementioned items, Evergy incurred natural gas and purchased power costs, net of wholesale revenues, of $341.3 million. This $341.3 million of net fuel and purchased power costs was primarily driven by $297.3 million of costs at Evergy Missouri West and $120.7 million of costs at Evergy Kansas Central, partially offset by $76.7 million of net wholesale revenues at Evergy Metro. The amount of purchased power costs incurred by the Evergy Companies during the 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 to the final amount of purchased power costs incurred by the Evergy Companies during the winter weather event and these increases 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 State Corporation Commission of the State of Kansas (KCC) issued an emergency Accounting Authority Order (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 winter weather event for consideration in future rate proceedings. See Note 4 for additional information regarding the AAO.

As of March 31, 2021, the Evergy Companies have deferred substantially all of the fuel and purchased power costs, net of wholesale revenues, related to the 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 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 Public Service Commission of the State of Missouri (MPSC) given the extraordinary nature of the winter weather event and to help moderate monthly customer bill impacts.

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 in February 2021 across the central and southern United States driven by the winter weather event discussed above,

Evergy and Evergy Kansas Central recorded $96.5 million of energy marketing margins in the first quarter of 2021 related to the winter weather event.

REVENUE

3 Months Ended

Mar. 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.



Three Months Ended March 31, 2021	Evergy			Evergy Kansas Central			Evergy Metro
Revenues		(millions)
Residential		$	396.7		$	183.4		$	122.2
Commercial		346.0			153.7			132.5
Industrial		133.6			93.0			22.3
Other retail		7.4			3.2			2.1
Total electric retail		$	883.7		$	433.3		$	279.1
Wholesale		487.5			272.4			200.5
Transmission		86.0			77.9			4.0
Industrial steam and other		5.2			0.5			0.3
Total revenue from contracts with customers		$	1,462.4		$	784.1		$	483.9
Other		149.5			117.0			32.3
Operating revenues		$	1,611.9		$	901.1		$	516.2



Three Months Ended March 31, 2020	Evergy			Evergy Kansas Central			Evergy Metro
Revenues		(millions)
Residential		$	402.5		$	167.8		$	147.4
Commercial		384.7			151.1			172.1
Industrial		140.6			92.1			30.1
Other retail		10.6			4.7			3.5
Total electric retail		$	938.4		$	415.7		$	353.1
Wholesale		63.5			54.8			6.8
Transmission		75.6			68.2			3.1
Industrial steam and other		8.4			3.5			0.4
Total revenue from contracts with customers		$	1,085.9		$	542.2		$	363.4
Other		30.8			17.9			12.1
Operating revenues		$	1,116.7		$	560.1		$	375.5

- 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=121604090&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=121604090&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=121604090&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=121604090&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=121604090&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=121604090&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=121604090&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=121604090&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=121604090&loc=SL49130554-203045

+ Details

RECEIVABLES

3 Months Ended

Mar. 31, 2021

Receivables [Abstract]

RECEIVABLES

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


	March 31		December 31
	2021		2020
Evergy	(millions)
Customer accounts receivable - billed	$	3.8	$	5.3
Customer accounts receivable - unbilled	62.2		110.0
Other receivables	205.1		177.9
Allowance for credit losses	(23.6)		(19.3)
Total	$	247.5	$	273.9
Evergy Kansas Central
Customer accounts receivable - billed	$	—	$	—
Customer accounts receivable - unbilled	17.0		50.7
Other receivables	200.9		175.7
Allowance for credit losses	(8.8)		(7.5)
Total	$	209.1	$	218.9
Evergy Metro
Customer accounts receivable - billed	$	0.9	$	3.3
Customer accounts receivable - unbilled	20.5		27.9
Other receivables	26.4		21.9
Allowance for credit losses	(9.9)		(8.1)
Total	$	37.9	$	45.0

The Evergy Companies' other receivables at March 31, 2021 and December 31, 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.


	March 31		December 31
	2021		2020
	(millions)
Evergy	$	85.7	$	57.5
Evergy Kansas Central	70.5		49.9
Evergy Metro	13.8		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	4.8		2.7
Write-offs	(4.0)		(5.0)
Recoveries of prior write-offs	3.5		3.3
Ending balance March 31	$	23.6	$	11.5
Evergy Kansas Central
Beginning balance January 1	$	7.5	$	3.8
Credit loss expense	0.6		0.8
Write-offs	(0.5)		(1.2)
Recoveries of prior write-offs	1.2		0.7
Ending balance March 31	$	8.8	$	4.1
Evergy Metro
Beginning balance January 1	$	8.1	$	4.6
Credit loss expense	2.5		1.4
Write-offs	(2.3)		(2.6)
Recoveries of prior write-offs	1.6		1.8
Ending balance March 31	$	9.9	$	5.2

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.


	March 31		December 31
	2021		2020
	(millions)
Evergy	$	365.0	$	360.0
Evergy Kansas Central	185.0		180.0
Evergy Metro	130.0		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	3 Months Ended
RATE MATTERS AND REGULATION	Mar. 31, 2021
Regulated Operations [Abstract]
RATE MATTERS AND REGULATION	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 Federal Energy Regulatory Commission (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. These calculations were filed with the KCC in March 2021. As of March 31, 2021, Evergy Kansas Central and Evergy Metro estimate their 2021 annual earnings will not result in a significant refund obligation. The final refund obligations for 2020 and 2021 will be decided by the KCC and could vary from the current estimates. Evergy Kansas Central and Evergy Metro Winter Weather 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 any extraordinary costs, including carrying costs, incurred to provide electric service during the February 2021 winter weather event for consideration in future rate proceedings. As of March 31, 2021, Evergy Kansas Central had recognized a regulatory asset pursuant to the AAO of $109.9 million related to its costs incurred during the winter weather event, primarily consisting of increased fuel and purchased power costs and including make-whole payments calculated by and paid to the SPP. Evergy Metro incurred a net increase in wholesale revenues of $76.7 million during the winter weather event, of which substantially all was deferred to a regulatory liability and is expected to be refunded to customers through its fuel recovery mechanisms in Kansas and Missouri. MPSC Proceedings 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 to a regulatory liability the revenues discussed above for consideration in Evergy Missouri West's next rate case, which is expected to be completed no later than the end of 2022. Depending on the MPSC's decision in this next 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 a result of the MPSC order, Evergy has recorded a regulatory liability of $21.1 million as of March 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 next 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 next rate case based on the relevant facts and circumstances. While Evergy has determined these additional revenues to not be probable of refund, the ultimate resolution of this matter in Evergy Missouri West's next rate case is uncertain and could result in an estimated loss of up to approximately $12 million per year in excess of the amount accrued until Evergy Missouri West's new rates become effective. Evergy's regulatory liability for probable refunds as of March 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 a future Evergy Missouri West rate case. 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 two years, the updated TFR was expected to adjust Evergy Kansas Central's annual transmission revenues by approximately: •$32.4 million increase effective in January 2021; and •$6.8 million increase effective in January 2020. Evergy Metro TFR In the most recent two years, the updated TFR was expected to adjust Evergy Metro's annual transmission revenues by approximately: •$3.9 million decrease effective in January 2021; and •$1.7 million decrease effective in January 2020.

PENSION PLANS AND POST-RETIREMENT BENEFITS

3 Months Ended

Mar. 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 Generating Station's (Wolf Creek) 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.

The following tables provide the components of net periodic benefit costs prior to the effects of capitalization and sharing with joint owners of power plants.


	Pension Benefits						Post-Retirement Benefits
Three Months Ended March 31, 2021	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Components of net periodic benefit costs	(millions)
Service cost	$	21.1	$	7.4	$	13.7	$	0.8	$	0.4	$	0.4
Interest cost	21.3		10.3		10.8		2.0		1.0		1.0
Expected return on plan assets	(26.8)		(13.6)		(14.5)		(2.2)		(1.6)		(0.7)
Prior service cost	0.5		0.5		—		0.1		0.1		(0.3)
Recognized net actuarial loss	14.8		9.8		11.2		0.3		0.2		—

Net periodic benefit costs before regulatory adjustment and intercompany allocations	30.9		14.4		21.2		1.0		0.1		0.4
Regulatory adjustment	7.1		(0.9)		3.0		(1.2)		(0.8)		0.1
Intercompany allocations	—		0.4		(5.9)		—		—		(0.1)
Net periodic benefit costs (income)	$	38.0	$	13.9	$	18.3	$	(0.2)	$	(0.7)	$	0.4


	Pension Benefits						Post-Retirement Benefits
Three Months Ended March 31, 2020	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Components of net periodic benefit costs	(millions)
Service cost	$	19.6	$	6.8	$	12.8	$	0.7	$	0.3	$	0.4
Interest cost	24.4		11.8		12.6		2.3		1.2		1.1
Expected return on plan assets	(26.7)		(13.3)		(14.1)		(2.3)		(1.7)		(0.7)
Prior service cost	0.4		0.4		0.2		0.1		0.1		—
Recognized net actuarial (gain)/loss	11.4		8.4		11.3		0.1		—		(0.1)

Net periodic benefit costs before regulatory adjustment and intercompany allocations	29.1		14.1		22.8		0.9		(0.1)		0.7
Regulatory adjustment	9.9		0.4		1.4		(0.9)		(0.7)		—
Intercompany allocations	—		—		(6.2)		—		—		0.2
Net periodic benefit costs (income)	$	39.0	$	14.5	$	18.0	$	—	$	(0.8)	$	0.9

The components of net periodic benefit costs other than the service cost component are included in other expense on the Evergy Companies' consolidated statements of income and comprehensive income.

For the three months ended March 31, 2021, Evergy, Evergy Kansas Central and Evergy Metro made pension contributions of $27.8 million, $17.4 million and $10.4 million, respectively. Evergy expects to make additional pension contributions of $107.4 million in 2021 to satisfy the Employee Retirement Income Security Act of 1974, as amended (ERISA) funding requirements and KCC and MPSC rate orders, of which $42.1 million is expected to be paid by Evergy Kansas Central and $65.3 million is expected to be paid by Evergy Metro.

Also in 2021, Evergy, Evergy Kansas Central and Evergy Metro expect to make post-retirement benefit contributions of $4.0 million, $0.6 million and $3.4 million, respectively.

- Definition

The entire disclosure for retirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDIT

3 Months Ended

Mar. 31, 2021

Debt Disclosure [Abstract]

SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDIT

Evergy's $2.5 billion master credit facility expires in 2023. 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. 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 March 31, 2021, Evergy, Evergy Kansas Central, Evergy Metro and Evergy Missouri West were in compliance with this covenant.

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


			Amounts Drawn
	Master Credit Facility		Commercial Paper		Letters of Credit		Cash Borrowings		Available Borrowings		Weighted Average Interest Rate on Short-Term Borrowings
March 31, 2021	(millions)
Evergy, Inc.	$	700.0	n/a		$	0.7	$	345.0	$	354.3	1.36%
Evergy Kansas Central	750.0		245.0		0.8		—		504.2		0.23%
Evergy Metro	350.0		115.0		—		—		235.0		0.17%
Evergy Missouri West	700.0		590.0		—		—		110.0		0.24%
Evergy	$	2,500.0	$	950.0	$	1.5	$	345.0	$	1,203.5

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

LONG-TERM DEBT	3 Months Ended
LONG-TERM DEBT	Mar. 31, 2021
Debt Disclosure [Abstract]
LONG-TERM DEBT	LONG-TERM DEBT Senior Notes 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.

FAIR VALUE MEASUREMENTS

3 Months Ended

Mar. 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.

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.



	March 31, 2021				December 31, 2020
	Book Value		Fair Value		Book Value		Fair Value
Long-term debt(a)	(millions)
Evergy(b)	$	9,624.1	$	10,429.2	$	9,627.3	$	11,274.2
Evergy Kansas Central	3,932.2		4,348.5		3,931.5		4,801.7
Evergy Metro	2,923.5		3,312.1		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 March 31, 2021 and December 31, 2020, includes $106.6 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	March 31, 2021			Level 1		Level 2			Level 3			NAV
Evergy Kansas Central		(millions)
Assets
Nuclear decommissioning trust(a)
Domestic equity funds		$	110.3	$	101.9		$	—		$	—		$	8.4
International equity funds		67.3		67.3			—			—			—
Core bond fund		40.0		40.0			—			—			—
High-yield bond fund		26.1		26.1			—			—			—
Emerging markets bond fund		20.3		20.3			—			—			—
Combination debt/equity/other fund		22.1		22.1			—			—			—
Alternative investments fund		28.1		—			—			—			28.1
Real estate securities fund		13.1		—			—			—			13.1
Cash equivalents		0.4		0.4			—			—			—
Total nuclear decommissioning trust		327.7		278.1			—			—			49.6
Rabbi trust
Fixed income funds		25.8		25.8			—			—			—
Equity funds		5.0		5.0			—			—			—
Combination debt/equity/other fund		0.7		0.7			—			—			—
Cash equivalents		0.1		0.1			—			—			—
Total rabbi trust		31.6		31.6			—			—			—
Total		$	359.3	$	309.7		$	—		$	—		$	49.6
Evergy Metro
Assets
Nuclear decommissioning trust(a)
Equity securities		$	262.9	$	262.9		$	—		$	—		$	—
Debt securities
U.S. Treasury		45.0		45.0			—			—			—
U.S. Agency		0.4		—			0.4			—			—
State and local obligations		4.1		—			4.1			—			—
Corporate bonds		43.1		—			43.1			—			—
Foreign governments		0.1		—			0.1			—			—
Cash equivalents		2.5		2.5			—			—			—
Other		0.7		—			0.7			—			—
Total nuclear decommissioning trust		358.8		310.4			48.4			—			—
Self-insured health plan trust(b)
Equity securities		1.8		1.8			—			—			—
Debt securities		8.6		3.0			5.6			—			—
Cash and cash equivalents		4.0		4.0			—			—			—
Total self-insured health plan trust		14.4		8.8			5.6			—			—
Total		$	373.2	$	319.2		$	54.0		$	—		$	—
Other Evergy
Assets
Rabbi trusts
Core bond fund		$	12.7	$	12.7		$	—		$	—		$	—
Cash and cash equivalents		0.5		0.5			—			—			—
Total rabbi trusts		$	13.2	$	13.2		$	—		$	—		$	—



Evergy
Assets
Nuclear decommissioning trust(a)		$	686.5	$	588.5		$	48.4		$	—		$	49.6
Rabbi trusts		44.8		44.8			—			—			—
Self-insured health plan trust(b)		14.4		8.8			5.6			—			—
Total		$	745.7	$	642.1		$	54.0		$	—		$	49.6


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.

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.


	March 31, 2021				December 31, 2020				March 31, 2021
	Fair		Unfunded		Fair		Unfunded		Redemption	Length of
	Value		Commitments		Value		Commitments		Frequency	Settlement
Evergy Kansas Central
Nuclear decommissioning trust:	(millions)
Domestic equity funds	$	8.4	$	1.9	$	7.6	$	2.2	(a)	(a)
Alternative investments fund(b)	28.1		—		23.2		—		Quarterly	65 days
Real estate securities fund(b)	13.1		—		12.9		—		Quarterly	65 days
Total	$	49.6	$	1.9	$	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	$	49.6	$	1.9	$	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.



Three Months Ended March 31	2021		2020
Evergy	(millions)
Nuclear decommissioning trust - equity securities	$	33.1	$	(89.3)
Nuclear decommissioning trust - debt securities	(5.1)		3.0
Rabbi trusts - equity securities	(1.3)		(2.0)
Total	$	26.7	$	(88.3)
Evergy Kansas Central
Nuclear decommissioning trust - equity securities	$	14.3	$	(38.1)
Rabbi trust - equity securities	(0.8)		(2.1)
Total	$	13.5	$	(40.2)
Evergy Metro
Nuclear decommissioning trust - equity securities	$	18.8	$	(51.2)
Nuclear decommissioning trust - debt securities	(5.1)		3.0
Total	$	13.7	$	(48.2)

- 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	3 Months Ended
COMMITMENTS AND CONTINGENCIES	Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	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/or 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. Cross-State Air Pollution Update Rule In September 2016, the Environmental Protection Agency (EPA) finalized the Cross-State Air Pollution (CSAPR) Update Rule. The final rule addresses interstate transport of nitrogen oxides emissions in 22 states including Kansas, Missouri and Oklahoma during the ozone season and the impact from the formation of ozone on downwind states with respect to the 2008 ozone National Ambient Air Quality Standards (NAAQS). In December 2018, the EPA finalized a determination, known as the CSAPR Close-Out Rule, demonstrating the CSAPR Update Rule fully addressed certain upwind states' 2008 ozone NAAQS interstate transport obligations. Various states and others challenged both the CSAPR Update Rule and the CSAPR Close-Out Rule in the U.S. Court of Appeals for the D.C. Circuit (D.C. Circuit). In 2019, the D.C. Circuit granted these petitions and remanded a portion of the CSAPR Update Rule back to the EPA and vacated the CSAPR Close-Out Rule in its entirety. In response to the remand by the D.C. Circuit, the EPA published the final Revised Cross-State Air Pollution Rule Update for the 2008 Ozone NAAQS in April 2021. The final rule finds that nine of the states that were subject to the CSAPR Update Rule do not significantly contribute to downwind states' nonattainment and/or maintenance issues during the ozone season and that there are no further reductions in allowance budgets for these states. These nine states are Alabama, Arkansas, Iowa, Kansas, Mississippi, Missouri, Oklahoma, Texas and Wisconsin. The Evergy Companies will continue to monitor this rule as any future changes to their NOx ozone season allowance allocations could be material. 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 (1) emission guidelines for GHG emissions from existing electric utility generating units (EGUs) and (2) revisions to emission guideline implementing regulations. This rule defined the "best system of emission reduction" (BSER) for GHG emissions from existing coal-fired EGUs as on-site, heat-rate efficiency improvements. The final rule also provided states with a list of candidate technologies that can be used to establish standards of performance and incorporate these performance standards into state plans. 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 February 2021, the D.C. Circuit granted a motion filed by the EPA for a partial stay of its January 2021 vacatur discussed above. The partial stay leaves the vacatur of the ACE rule in place while staying the mandate that vacates the repeal of the CPP. As a result of the partial stay, neither the ACE rule nor the CPP will be in effect while the EPA forms a new rule to regulate greenhouse gas emissions. In April 2021, 18 states filed a petition for a writ of certiorari to the Supreme Court requesting review of the D.C. Circuit ruling. Due to uncertainty regarding the future of the ACE rule or other potential GHG regulations, the Evergy Companies cannot determine the impact of the rule 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 vacates and remands portions of the original ELG rule. Due to this ruling, future ELG modifications for the best available technology economically achievable for the discharge of legacy wastewater and leachate are likely and could be material. 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. The Evergy Companies have reviewed the regulation and the costs to comply with these changes are not expected to be material. Regulation of Coal Combustion Residuals In the course of operating their coal generation plants, the Evergy Companies produce coal combustion residuals (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. In March 2019, the D.C. Circuit issued a ruling to grant the EPA's request to remand the Phase I, Part I CCR rule in response to a prior court ruling requiring the EPA to address un-lined surface impoundment closure requirements. In August 2020, the EPA published the Part A CCR Rule. This rule reclassified clay-lined surface impoundments from "lined" to "un-lined" and established a deadline of April 11, 2021 to initiate closure. In November 2020, the EPA published the final Part B CCR Rule. This rule includes a process to allow un-lined impoundments to continue to operate if a demonstration is made to prove that the un-lined impoundments are not adversely impacting groundwater, human health or the environment. The Evergy Companies have initiated closure of all un-lined impoundments by the deadline in the Part A CCR rule and therefore the Part B CCR rule is not expected to have a material impact. The Evergy Companies have recorded Asset Retirement Obligations (ARO) for their current estimates for the closure of ash disposal ponds, 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. If revisions to these AROs are necessary, the impact on the Evergy Companies' operations or consolidated financial results could be material.

RELATED PARTY TRANSACTIONS AND RELATIONSHIPS

3 Months Ended

Mar. 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.



Three Months Ended March 31	2021		2020
	(millions)
Evergy Kansas Central billings to Evergy Missouri West	$	9.5	$	4.3
Evergy Metro billings to Evergy Missouri West	34.7		39.3
Evergy Kansas Central billings to Evergy Metro	9.9		15.0
Evergy Metro billings to Evergy Kansas Central	25.7		48.1

Money Pool

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 to Evergy Metro and Evergy Missouri West from Evergy, Inc. and between Evergy Metro and Evergy Missouri West. At March 31, 2021, Evergy Metro had no outstanding receivables or payables under the money pool. At December 31, 2020, Evergy Metro had a $100.0 million outstanding receivable from Evergy Missouri West and no outstanding payables 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.


	March 31		December 31

	2021		2020
Evergy Kansas Central	(millions)
Net receivable from Evergy	$	0.9	$	0.1
Net payable to Evergy Metro	(8.7)		(21.7)
Net receivable from Evergy Missouri West	9.5		6.6

Evergy Metro
Net receivable from Evergy	$	19.4	$	15.7
Net receivable from Evergy Kansas Central	8.7		21.7
Net receivable from Evergy Missouri West	379.6		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.


	March 31		December 31

	2021		2020
Evergy Kansas Central	(millions)
Income taxes receivable from Evergy	$	19.0	$	25.3

Evergy Metro
Income taxes receivable from (payable to) Evergy	$	(26.7)	$	3.2

Leases

Evergy Metro leases certain transmission equipment from Evergy Kansas Central. This lease was entered into prior to the merger in an arms-length transaction and is accounted for as an operating lease. The right-of-use asset related to this lease is recorded within other long-term assets and the current and long-term lease liabilities are recorded within other current liabilities and other long-term liabilities, respectively, on the consolidated balance sheet. The assets and liabilities related to this lease between Evergy Kansas Central and Evergy Metro are eliminated at consolidated Evergy. The following table summarizes Evergy Metro's right-of-use assets and related liabilities on its consolidated balance sheet.


	March 31		December 31

	2021		2020
Evergy Metro	(millions)
Right-of-use asset recorded within other long-term assets	$	28.8	$	28.9
Lease liability recorded in other current liabilities	0.7		0.7
Lease liability recorded in other long-term liabilities	28.1		28.2

SHAREHOLDERS' EQUITY	3 Months Ended
SHAREHOLDERS' EQUITY	Mar. 31, 2021
Stockholders' Equity Note [Abstract]
SHAREHOLDERS' EQUITY	SHAREHOLDERS' EQUITYBluescape Energy Partners, LLC (Bluescape) Securities Purchase AgreementIn 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, the affiliate of Bluescape completed the purchase of Evergy's common stock and the warrant in April 2021. The Executive Chairman of Bluescape, C. John Wilder, joined the Evergy Board in March 2021.

TAXES

3 Months Ended

Mar. 31, 2021

Income Tax Disclosure [Abstract]

TAXES

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


Evergy

Three Months Ended March 31	2021		2020
Current income taxes	(millions)
Federal	$	1.1	$	2.4
State	1.9		(0.4)
Total	3.0		2.0
Deferred income taxes
Federal	17.7		6.0
State	3.8		2.8
Total	21.5		8.8










Investment tax credit amortization	(1.5)		(0.7)
Income tax expense	$	23.0	$	10.1


Evergy Kansas Central

Three Months Ended March 31	2021		2020
Current income taxes	(millions)
Federal	$	7.5	$	24.2
State	1.2		(0.4)
Total	8.7		23.8
Deferred income taxes
Federal	6.7		(18.2)
State	2.3		2.6
Total	9.0		(15.6)










Investment tax credit amortization	(1.1)		(0.4)
Income tax expense	$	16.6	$	7.8


Evergy Metro

Three Months Ended March 31	2021		2020
Current income taxes	(millions)
Federal	$	27.1	$	11.6
State	1.2		1.2
Total	28.3		12.8
Deferred income taxes
Federal	(22.0)		(9.5)
State	(0.8)		(0.4)
Total	(22.8)		(9.9)


Investment tax credit amortization	(0.4)		(0.3)

Income tax expense	$	5.1	$	2.6

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

Three Months Ended March 31	2021		2020
Federal statutory income tax rate	21.0	%	21.0	%
Effect of:
COLI policies	(1.0)		(1.6)
State income taxes	1.9		2.3
Flow through depreciation for plant-related differences	(5.8)		(3.9)
Federal tax credits	(3.1)		(4.5)
Non-controlling interest	(0.3)		(0.3)
AFUDC equity	(0.7)		(0.3)
Amortization of federal investment tax credits	(0.4)		(0.5)



Stock compensation	0.2		0.1
Officer compensation limitation	0.4		0.1
Other	(1.6)		(0.2)
Effective income tax rate	10.6	%	12.2	%


Evergy Kansas Central

Three Months Ended March 31	2021		2020
Federal statutory income tax rate	21.0	%	21.0	%
Effect of:
COLI policies	(1.8)		(3.1)
State income taxes	1.2		2.7
Flow through depreciation for plant-related differences	(3.3)		—
Federal tax credits	(5.2)		(6.6)
Non-controlling interest	(0.5)		(0.6)
AFUDC equity	(0.8)		(0.4)
Amortization of federal investment tax credits	(0.5)		(0.7)



Stock compensation	(0.1)		(0.1)
Officer compensation limitation	0.2		—
Other	(1.8)		0.1
Effective income tax rate	8.4	%	12.3	%


Evergy Metro

Three Months Ended March 31	2021		2020
Federal statutory income tax rate	21.0	%	21.0	%
Effect of:
COLI policies	(0.2)		—
State income taxes	0.6		2.2
Flow through depreciation for plant-related differences	(7.8)		(7.7)
Federal tax credits	(0.6)		(2.4)
AFUDC equity	(0.7)		(0.2)
Amortization of federal investment tax credits	(0.4)		(0.4)


Stock compensation	0.4		(3.6)
Officer compensation limitation	0.9		—
Other	0.1		0.4
Effective income tax rate	13.3	%	9.3	%

- 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 + Details

ORGANIZATION AND BASIS OF PRESENTATION (Policies)	3 Months Ended
ORGANIZATION AND BASIS OF PRESENTATION (Policies)	Mar. 31, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation These unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles (GAAP) for interim financial information and with the instructions to Form 10-Q and Regulation S-X. Accordingly, these unaudited consolidated financial statements do not include all of the information and notes required by GAAP for annual financial statements and should be read in conjunction with the consolidated financial statements in the Evergy Companies' combined 2020 Form 10-K. These unaudited consolidated financial statements, in the opinion of management, reflect all normal recurring adjustments necessary to fairly present the unaudited consolidated financial statements for each of the Evergy Companies for these interim periods. In preparing financial statements that conform to GAAP, management must make estimates and assumptions that affect the reported amounts of assets and liabilities, the reported amounts of revenues and expenses, and the disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates.
Principles of Consolidation	Principles of Consolidation Each of Evergy's, Evergy Kansas Central's and Evergy Metro's unaudited 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).
Fuel Inventory and Supplies	Fuel Inventory and SuppliesThe Evergy Companies record fuel inventory and supplies at average cost.
Earnings Per Share	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), performance shares, restricted stock and a warrant. Evergy computes the dilutive effects of potential issuances of common shares using the treasury stock method.

- Definition

Disclosure of inventory accounting policy for inventory classes, including, but not limited to, basis for determining inventory amounts, methods by which amounts are added and removed from inventory classes, loss recognition on impairment of inventories, and situations in which inventories are stated above cost.

+ References + Details

ORGANIZATION AND BASIS OF PRESENTATION (Tables)

3 Months Ended

Mar. 31, 2021

Accounting Policies [Abstract]

Schedule of 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.



	March 31 2021		December 31 2020
Evergy	(millions)
Fuel inventory	$	127.5	$	145.0
Supplies	364.8		359.5
Fuel inventory and supplies	$	492.3	$	504.5
Evergy Kansas Central
Fuel inventory	$	75.5	$	79.3
Supplies	195.7		197.1
Fuel inventory and supplies	$	271.2	$	276.4
Evergy Metro
Fuel inventory	$	36.6	$	44.9
Supplies	130.9		125.5
Fuel inventory and supplies	$	167.5	$	170.4

Summary of Property, Plant and Equipment

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


March 31, 2021	Evergy			Evergy Kansas Central			Evergy Metro
		(millions)
Electric plant in service		$	29,378.9		$	14,239.8		$	11,414.0
Electric plant acquisition adjustment		724.3			724.3			—
Accumulated depreciation		(11,146.4)			(5,356.6)			(4,597.8)
Plant in service, net		18,956.8			9,607.5			6,816.2
Construction work in progress		999.8			565.8			300.5
Nuclear fuel, net		144.7			72.2			72.5
Plant to be retired, net(a)		0.9			0.9			—
Property, plant and equipment, net		$	20,102.2		$	10,246.4		$	7,189.2

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, net		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			—
Property, plant and equipment, net		$	19,951.0		$	10,193.6		$	7,141.2

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

Schedule of Other Nonoperating Income (Expense)

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



Three Months Ended March 31	2021		2020
Evergy	(millions)
Non-service cost component of net benefit cost	$	(14.8)	$	(16.2)
Other	(6.1)		(6.5)
Other expense	$	(20.9)	$	(22.7)
Evergy Kansas Central
Non-service cost component of net benefit cost	$	(3.6)	$	(5.6)
Other	(5.6)		(5.9)
Other expense	$	(9.2)	$	(11.5)
Evergy Metro
Non-service cost component of net benefit cost	$	(7.9)	$	(6.9)
Other	(0.5)		(0.5)
Other expense	$	(8.4)	$	(7.4)

Schedule of Earnings Per Share, Basic and Diluted

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



Three Months Ended March 31	2021		2020
Income	(millions, except per share amounts)
Net income	$	194.6	$	72.2
Less: Net income attributable to noncontrolling interests	3.0		2.8
Net income attributable to Evergy, Inc.	$	191.6	$	69.4
Common Shares Outstanding
Weighted average number of common shares outstanding - basic	227.3		227.1
Add: Effect of dilutive securities	0.3		0.4
Weighted average number of common shares outstanding - dilutive	227.6		227.5
Basic and Diluted EPS	$	0.84	$	0.31

Supplemental Cash Flow Information


Evergy
Three Months Ended March 31	2021		2020
Cash paid for (received from):	(millions)
Interest, net of amounts capitalized	$	78.6	$	86.5
Interest of VIEs	0.2		0.6
Income taxes, net of refunds	2.6		0.2
Right-of-use assets obtained in exchange for new operating lease liabilities	2.2		2.6
Right-of-use assets obtained in exchange for new finance lease liabilities	0.2		3.1
Non-cash investing transactions:
Property, plant and equipment additions	104.4		75.7

Non-cash financing transactions:
Issuance of stock for compensation and reinvested dividends	0.7		0.9


Evergy Kansas Central
Three Months Ended March 31	2021		2020
Cash paid for (received from):	(millions)
Interest, net of amounts capitalized	$	31.2	$	37.4
Interest of VIEs	0.2		0.6
Income taxes, net of refunds	2.6		0.2
Right-of-use assets obtained in exchange for new operating lease liabilities	1.5		2.6
Right-of-use assets obtained in exchange for new finance lease liabilities	0.2		1.9
Non-cash investing transactions:
Property, plant and equipment additions	45.4		52.5


Evergy Metro
Three Months Ended March 31	2021		2020
Cash paid for (received from):	(millions)
Interest, net of amounts capitalized	$	18.6	$	18.7
Income taxes, net of refunds	(1.6)		—
Right-of-use assets obtained in exchange for new operating lease liabilities	0.7		—
Right-of-use assets obtained in exchange for new finance lease liabilities	—		1.2
Non-cash investing transactions:
Property, plant and equipment additions	34.6		17.8

REVENUE (Tables)

3 Months Ended

Mar. 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.



Three Months Ended March 31, 2021	Evergy			Evergy Kansas Central			Evergy Metro
Revenues		(millions)
Residential		$	396.7		$	183.4		$	122.2
Commercial		346.0			153.7			132.5
Industrial		133.6			93.0			22.3
Other retail		7.4			3.2			2.1
Total electric retail		$	883.7		$	433.3		$	279.1
Wholesale		487.5			272.4			200.5
Transmission		86.0			77.9			4.0
Industrial steam and other		5.2			0.5			0.3
Total revenue from contracts with customers		$	1,462.4		$	784.1		$	483.9
Other		149.5			117.0			32.3
Operating revenues		$	1,611.9		$	901.1		$	516.2



Three Months Ended March 31, 2020	Evergy			Evergy Kansas Central			Evergy Metro
Revenues		(millions)
Residential		$	402.5		$	167.8		$	147.4
Commercial		384.7			151.1			172.1
Industrial		140.6			92.1			30.1
Other retail		10.6			4.7			3.5
Total electric retail		$	938.4		$	415.7		$	353.1
Wholesale		63.5			54.8			6.8
Transmission		75.6			68.2			3.1
Industrial steam and other		8.4			3.5			0.4
Total revenue from contracts with customers		$	1,085.9		$	542.2		$	363.4
Other		30.8			17.9			12.1
Operating revenues		$	1,116.7		$	560.1		$	375.5

RECEIVABLES (Tables)

3 Months Ended

Mar. 31, 2021

Receivables [Abstract]

Schedule of Receivables

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


	March 31		December 31
	2021		2020
Evergy	(millions)
Customer accounts receivable - billed	$	3.8	$	5.3
Customer accounts receivable - unbilled	62.2		110.0
Other receivables	205.1		177.9
Allowance for credit losses	(23.6)		(19.3)
Total	$	247.5	$	273.9
Evergy Kansas Central
Customer accounts receivable - billed	$	—	$	—
Customer accounts receivable - unbilled	17.0		50.7
Other receivables	200.9		175.7
Allowance for credit losses	(8.8)		(7.5)
Total	$	209.1	$	218.9
Evergy Metro
Customer accounts receivable - billed	$	0.9	$	3.3
Customer accounts receivable - unbilled	20.5		27.9
Other receivables	26.4		21.9
Allowance for credit losses	(9.9)		(8.1)
Total	$	37.9	$	45.0

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


	March 31		December 31
	2021		2020
	(millions)
Evergy	$	85.7	$	57.5
Evergy Kansas Central	70.5		49.9
Evergy Metro	13.8		6.9

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


	March 31		December 31
	2021		2020
	(millions)
Evergy	$	365.0	$	360.0
Evergy Kansas Central	185.0		180.0
Evergy Metro	130.0		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	4.8		2.7
Write-offs	(4.0)		(5.0)
Recoveries of prior write-offs	3.5		3.3
Ending balance March 31	$	23.6	$	11.5
Evergy Kansas Central
Beginning balance January 1	$	7.5	$	3.8
Credit loss expense	0.6		0.8
Write-offs	(0.5)		(1.2)
Recoveries of prior write-offs	1.2		0.7
Ending balance March 31	$	8.8	$	4.1
Evergy Metro
Beginning balance January 1	$	8.1	$	4.6
Credit loss expense	2.5		1.4
Write-offs	(2.3)		(2.6)
Recoveries of prior write-offs	1.6		1.8
Ending balance March 31	$	9.9	$	5.2

PENSION PLANS AND POST-RETIREMENT BENEFITS (Tables)

3 Months Ended

Mar. 31, 2021

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

The following tables provide the components of net periodic benefit costs prior to the effects of capitalization and sharing with joint owners of power plants.


	Pension Benefits						Post-Retirement Benefits
Three Months Ended March 31, 2021	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Components of net periodic benefit costs	(millions)
Service cost	$	21.1	$	7.4	$	13.7	$	0.8	$	0.4	$	0.4
Interest cost	21.3		10.3		10.8		2.0		1.0		1.0
Expected return on plan assets	(26.8)		(13.6)		(14.5)		(2.2)		(1.6)		(0.7)
Prior service cost	0.5		0.5		—		0.1		0.1		(0.3)
Recognized net actuarial loss	14.8		9.8		11.2		0.3		0.2		—

Net periodic benefit costs before regulatory adjustment and intercompany allocations	30.9		14.4		21.2		1.0		0.1		0.4
Regulatory adjustment	7.1		(0.9)		3.0		(1.2)		(0.8)		0.1
Intercompany allocations	—		0.4		(5.9)		—		—		(0.1)
Net periodic benefit costs (income)	$	38.0	$	13.9	$	18.3	$	(0.2)	$	(0.7)	$	0.4


	Pension Benefits						Post-Retirement Benefits
Three Months Ended March 31, 2020	Evergy		Evergy Kansas Central		Evergy Metro		Evergy		Evergy Kansas Central		Evergy Metro
Components of net periodic benefit costs	(millions)
Service cost	$	19.6	$	6.8	$	12.8	$	0.7	$	0.3	$	0.4
Interest cost	24.4		11.8		12.6		2.3		1.2		1.1
Expected return on plan assets	(26.7)		(13.3)		(14.1)		(2.3)		(1.7)		(0.7)
Prior service cost	0.4		0.4		0.2		0.1		0.1		—
Recognized net actuarial (gain)/loss	11.4		8.4		11.3		0.1		—		(0.1)

Net periodic benefit costs before regulatory adjustment and intercompany allocations	29.1		14.1		22.8		0.9		(0.1)		0.7
Regulatory adjustment	9.9		0.4		1.4		(0.9)		(0.7)		—
Intercompany allocations	—		—		(6.2)		—		—		0.2
Net periodic benefit costs (income)	$	39.0	$	14.5	$	18.0	$	—	$	(0.8)	$	0.9

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

3 Months Ended

Mar. 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 March 31, 2021 and December 31, 2020.


			Amounts Drawn
	Master Credit Facility		Commercial Paper		Letters of Credit		Cash Borrowings		Available Borrowings		Weighted Average Interest Rate on Short-Term Borrowings
March 31, 2021	(millions)
Evergy, Inc.	$	700.0	n/a		$	0.7	$	345.0	$	354.3	1.36%
Evergy Kansas Central	750.0		245.0		0.8		—		504.2		0.23%
Evergy Metro	350.0		115.0		—		—		235.0		0.17%
Evergy Missouri West	700.0		590.0		—		—		110.0		0.24%
Evergy	$	2,500.0	$	950.0	$	1.5	$	345.0	$	1,203.5

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

FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Mar. 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.



	March 31, 2021				December 31, 2020
	Book Value		Fair Value		Book Value		Fair Value
Long-term debt(a)	(millions)
Evergy(b)	$	9,624.1	$	10,429.2	$	9,627.3	$	11,274.2
Evergy Kansas Central	3,932.2		4,348.5		3,931.5		4,801.7
Evergy Metro	2,923.5		3,312.1		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	March 31, 2021			Level 1		Level 2			Level 3			NAV
Evergy Kansas Central		(millions)
Assets
Nuclear decommissioning trust(a)
Domestic equity funds		$	110.3	$	101.9		$	—		$	—		$	8.4
International equity funds		67.3		67.3			—			—			—
Core bond fund		40.0		40.0			—			—			—
High-yield bond fund		26.1		26.1			—			—			—
Emerging markets bond fund		20.3		20.3			—			—			—
Combination debt/equity/other fund		22.1		22.1			—			—			—
Alternative investments fund		28.1		—			—			—			28.1
Real estate securities fund		13.1		—			—			—			13.1
Cash equivalents		0.4		0.4			—			—			—
Total nuclear decommissioning trust		327.7		278.1			—			—			49.6
Rabbi trust
Fixed income funds		25.8		25.8			—			—			—
Equity funds		5.0		5.0			—			—			—
Combination debt/equity/other fund		0.7		0.7			—			—			—
Cash equivalents		0.1		0.1			—			—			—
Total rabbi trust		31.6		31.6			—			—			—
Total		$	359.3	$	309.7		$	—		$	—		$	49.6
Evergy Metro
Assets
Nuclear decommissioning trust(a)
Equity securities		$	262.9	$	262.9		$	—		$	—		$	—
Debt securities
U.S. Treasury		45.0		45.0			—			—			—
U.S. Agency		0.4		—			0.4			—			—
State and local obligations		4.1		—			4.1			—			—
Corporate bonds		43.1		—			43.1			—			—
Foreign governments		0.1		—			0.1			—			—
Cash equivalents		2.5		2.5			—			—			—
Other		0.7		—			0.7			—			—
Total nuclear decommissioning trust		358.8		310.4			48.4			—			—
Self-insured health plan trust(b)
Equity securities		1.8		1.8			—			—			—
Debt securities		8.6		3.0			5.6			—			—
Cash and cash equivalents		4.0		4.0			—			—			—
Total self-insured health plan trust		14.4		8.8			5.6			—			—
Total		$	373.2	$	319.2		$	54.0		$	—		$	—
Other Evergy
Assets
Rabbi trusts
Core bond fund		$	12.7	$	12.7		$	—		$	—		$	—
Cash and cash equivalents		0.5		0.5			—			—			—
Total rabbi trusts		$	13.2	$	13.2		$	—		$	—		$	—



Evergy
Assets
Nuclear decommissioning trust(a)		$	686.5	$	588.5		$	48.4		$	—		$	49.6
Rabbi trusts		44.8		44.8			—			—			—
Self-insured health plan trust(b)		14.4		8.8			5.6			—			—
Total		$	745.7	$	642.1		$	54.0		$	—		$	49.6


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.

Schedule of Fair Value Investments, Entities that Calculate NAV

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


	March 31, 2021				December 31, 2020				March 31, 2021
	Fair		Unfunded		Fair		Unfunded		Redemption	Length of
	Value		Commitments		Value		Commitments		Frequency	Settlement
Evergy Kansas Central
Nuclear decommissioning trust:	(millions)
Domestic equity funds	$	8.4	$	1.9	$	7.6	$	2.2	(a)	(a)
Alternative investments fund(b)	28.1		—		23.2		—		Quarterly	65 days
Real estate securities fund(b)	13.1		—		12.9		—		Quarterly	65 days
Total	$	49.6	$	1.9	$	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	$	49.6	$	1.9	$	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.



Three Months Ended March 31	2021		2020
Evergy	(millions)
Nuclear decommissioning trust - equity securities	$	33.1	$	(89.3)
Nuclear decommissioning trust - debt securities	(5.1)		3.0
Rabbi trusts - equity securities	(1.3)		(2.0)
Total	$	26.7	$	(88.3)
Evergy Kansas Central
Nuclear decommissioning trust - equity securities	$	14.3	$	(38.1)
Rabbi trust - equity securities	(0.8)		(2.1)
Total	$	13.5	$	(40.2)
Evergy Metro
Nuclear decommissioning trust - equity securities	$	18.8	$	(51.2)
Nuclear decommissioning trust - debt securities	(5.1)		3.0
Total	$	13.7	$	(48.2)

RELATED PARTY TRANSACTIONS AND RELATIONSHIPS (Tables)

3 Months Ended

Mar. 31, 2021

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



Three Months Ended March 31	2021		2020
	(millions)
Evergy Kansas Central billings to Evergy Missouri West	$	9.5	$	4.3
Evergy Metro billings to Evergy Missouri West	34.7		39.3
Evergy Kansas Central billings to Evergy Metro	9.9		15.0
Evergy Metro billings to Evergy Kansas Central	25.7		48.1

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


	March 31		December 31

	2021		2020
Evergy Kansas Central	(millions)
Net receivable from Evergy	$	0.9	$	0.1
Net payable to Evergy Metro	(8.7)		(21.7)
Net receivable from Evergy Missouri West	9.5		6.6

Evergy Metro
Net receivable from Evergy	$	19.4	$	15.7
Net receivable from Evergy Kansas Central	8.7		21.7
Net receivable from Evergy Missouri West	379.6		188.1

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


	March 31		December 31

	2021		2020
Evergy Kansas Central	(millions)
Income taxes receivable from Evergy	$	19.0	$	25.3

Evergy Metro
Income taxes receivable from (payable to) Evergy	$	(26.7)	$	3.2

The following table summarizes Evergy Metro's right-of-use assets and related liabilities on its consolidated balance sheet.


	March 31		December 31

	2021		2020
Evergy Metro	(millions)
Right-of-use asset recorded within other long-term assets	$	28.8	$	28.9
Lease liability recorded in other current liabilities	0.7		0.7
Lease liability recorded in other long-term liabilities	28.1		28.2

TAXES (Tables)

3 Months Ended

Mar. 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

Three Months Ended March 31	2021		2020
Current income taxes	(millions)
Federal	$	1.1	$	2.4
State	1.9		(0.4)
Total	3.0		2.0
Deferred income taxes
Federal	17.7		6.0
State	3.8		2.8
Total	21.5		8.8










Investment tax credit amortization	(1.5)		(0.7)
Income tax expense	$	23.0	$	10.1


Evergy Kansas Central

Three Months Ended March 31	2021		2020
Current income taxes	(millions)
Federal	$	7.5	$	24.2
State	1.2		(0.4)
Total	8.7		23.8
Deferred income taxes
Federal	6.7		(18.2)
State	2.3		2.6
Total	9.0		(15.6)










Investment tax credit amortization	(1.1)		(0.4)
Income tax expense	$	16.6	$	7.8


Evergy Metro

Three Months Ended March 31	2021		2020
Current income taxes	(millions)
Federal	$	27.1	$	11.6
State	1.2		1.2
Total	28.3		12.8
Deferred income taxes
Federal	(22.0)		(9.5)
State	(0.8)		(0.4)
Total	(22.8)		(9.9)


Investment tax credit amortization	(0.4)		(0.3)

Income tax expense	$	5.1	$	2.6

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

Three Months Ended March 31	2021		2020
Federal statutory income tax rate	21.0	%	21.0	%
Effect of:
COLI policies	(1.0)		(1.6)
State income taxes	1.9		2.3
Flow through depreciation for plant-related differences	(5.8)		(3.9)
Federal tax credits	(3.1)		(4.5)
Non-controlling interest	(0.3)		(0.3)
AFUDC equity	(0.7)		(0.3)
Amortization of federal investment tax credits	(0.4)		(0.5)



Stock compensation	0.2		0.1
Officer compensation limitation	0.4		0.1
Other	(1.6)		(0.2)
Effective income tax rate	10.6	%	12.2	%


Evergy Kansas Central

Three Months Ended March 31	2021		2020
Federal statutory income tax rate	21.0	%	21.0	%
Effect of:
COLI policies	(1.8)		(3.1)
State income taxes	1.2		2.7
Flow through depreciation for plant-related differences	(3.3)		—
Federal tax credits	(5.2)		(6.6)
Non-controlling interest	(0.5)		(0.6)
AFUDC equity	(0.8)		(0.4)
Amortization of federal investment tax credits	(0.5)		(0.7)



Stock compensation	(0.1)		(0.1)
Officer compensation limitation	0.2		—
Other	(1.8)		0.1
Effective income tax rate	8.4	%	12.3	%


Evergy Metro

Three Months Ended March 31	2021		2020
Federal statutory income tax rate	21.0	%	21.0	%
Effect of:
COLI policies	(0.2)		—
State income taxes	0.6		2.2
Flow through depreciation for plant-related differences	(7.8)		(7.7)
Federal tax credits	(0.6)		(2.4)
AFUDC equity	(0.7)		(0.2)
Amortization of federal investment tax credits	(0.4)		(0.4)


Stock compensation	0.4		(3.6)
Officer compensation limitation	0.9		—
Other	0.1		0.4
Effective income tax rate	13.3	%	9.3	%

ORGANIZATION AND BASIS OF PRESENTATION - Organization (Details) customer in Millions, $ in Millions	1 Months Ended	3 Months Ended
	Feb. 28, 2021 USD ($)	Mar. 31, 2021 subsidiary kilovolt_line customer segment mi MW
Summary Of Accounting Policies [Line Items]
Owned generating capacity and renewable purchased power \| MW		15,400
Number of customers served \| customer		1.6
Number of segments \| segment		1
Increase of Natural Gas and Purchased Power Costs, Net Increase in Wholesale Revenues	$ 341.3
Prairie Wind Transmission, LLC
Summary Of Accounting Policies [Line Items]
Transmission line length \| mi		108
Transmission line electrical potential \| kilovolt_line		345
Evergy Kansas Central
Summary Of Accounting Policies [Line Items]
Increase of Natural Gas and Purchased Power Costs, Gross	120.7
Increase of Energy Marketing Margins	96.5
Evergy Missouri West
Summary Of Accounting Policies [Line Items]
Increase of Natural Gas and Purchased Power Costs, Gross	297.3
Evergy Metro
Summary Of Accounting Policies [Line Items]
Increase in Wholesale Revenues	$ 76.7
Evergy Kansas South Inc \| Evergy Kansas Central
Summary Of Accounting Policies [Line Items]
Number of active wholly owned subsidiaries \| subsidiary		1
Transource Energy, LLC \| Evergy Transmission Company LLC
Summary Of Accounting Policies [Line Items]
Ownership percentage		13.50%
Transource Energy, LLC \| AEP Transmission Holding Company, LLC
Summary Of Accounting Policies [Line Items]
Ownership interest		86.50%
Prairie Wind Transmission, LLC \| Evergy Kansas Central
Summary Of Accounting Policies [Line Items]
Ownership percentage		50.00%

ORGANIZATION AND BASIS OF PRESENTATION - Fuel Inventory and Supplies (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Inventory [Line Items]
Fuel inventory	$ 127.5	$ 145.0
Supplies	364.8	359.5
Fuel inventory and supplies	492.3	504.5
Evergy Kansas Central
Inventory [Line Items]
Fuel inventory	75.5	79.3
Supplies	195.7	197.1
Fuel inventory and supplies	271.2	276.4
Evergy Metro
Inventory [Line Items]
Fuel inventory	36.6	44.9
Supplies	130.9	125.5
Fuel inventory and supplies	$ 167.5	$ 170.4

ORGANIZATION AND BASIS OF PRESENTATION - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 20,102.2	$ 19,951.0
Electric plant in service
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	29,378.9	28,914.8
Property, plant and equipment, adjustment	724.3	724.3
Accumulated depreciation	(11,146.4)	(10,998.4)
Property, plant and equipment, net	18,956.8	18,640.7
Construction work in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	999.8	1,153.5
Nuclear fuel, net
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	144.7	155.9
Plant to be retired, net
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	0.9	0.9
Evergy Kansas Central
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	10,246.4	10,193.6
Evergy Kansas Central \| Electric plant in service
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	14,239.8	14,095.1
Property, plant and equipment, adjustment	724.3	724.3
Accumulated depreciation	(5,356.6)	(5,293.5)
Property, plant and equipment, net	9,607.5	9,525.9
Evergy Kansas Central \| Construction work in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	565.8	589.1
Evergy Kansas Central \| Nuclear fuel, net
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	72.2	77.7
Evergy Kansas Central \| Plant to be retired, net
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	0.9	0.9
Evergy Metro
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	7,189.2	7,141.2
Evergy Metro \| Electric plant in service
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	11,414.0	11,161.8
Property, plant and equipment, adjustment	0.0	0.0
Accumulated depreciation	(4,597.8)	(4,532.7)
Property, plant and equipment, net	6,816.2	6,629.1
Evergy Metro \| Construction work in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	300.5	433.9
Evergy Metro \| Nuclear fuel, net
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	72.5	78.2
Evergy Metro \| Plant to be retired, net
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 0.0	$ 0.0

ORGANIZATION AND BASIS OF PRESENTATION - Other Income And Expense (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Entity Information [Line Items]
Non-service cost component of net benefit cost	$ (14.8)	$ (16.2)
Other	(6.1)	(6.5)
Other expense	(20.9)	(22.7)
Evergy Kansas Central
Entity Information [Line Items]
Non-service cost component of net benefit cost	(3.6)	(5.6)
Other	(5.6)	(5.9)
Other expense	(9.2)	(11.5)
Evergy Metro
Entity Information [Line Items]
Non-service cost component of net benefit cost	(7.9)	(6.9)
Other	(0.5)	(0.5)
Other expense	$ (8.4)	$ (7.4)

ORGANIZATION AND BASIS OF PRESENTATION - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income
Net income	$ 194.6	$ 72.2
Less: Net income attributable to noncontrolling interests	3.0	2.8
Net income attributable to Evergy, Inc.	$ 191.6	$ 69.4
Common Shares Outstanding
Weighted average equivalent common shares outstanding - basic (in shares)	227.3	227.1
Add: effect of dilutive securities (in shares)	0.3	0.4
Diluted average number of common shares outstanding (in shares)	227.6	227.5
Earnings Per Share, Basic	$ 0.84	$ 0.31
Earnings Per Share, Diluted	$ 0.84	$ 0.31

ORGANIZATION AND BASIS OF PRESENTATION - Antidilutive Securities (Details) - shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
RSU With Performance Measures
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	353,806	175,991
Warrant \| Maximum
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	3,950,000
Restricted Stock Units With Service Requirements
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount		58,714

ORGANIZATION AND BASIS OF PRESENTATION - Dividends Declared (Details) - $ / shares		3 Months Ended
	May 04, 2021	Mar. 31, 2021	Mar. 31, 2020
Dividends Payable [Line Items]
Dividends declared on common stock (in dollars per share)		$ 0.535	$ 0.505
Common Stock \| Subsequent Event
Dividends Payable [Line Items]
Dividends declared on common stock (in dollars per share)	$ 0.535

ORGANIZATION AND BASIS OF PRESENTATION - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash paid for (received from):
Interest, net of amount capitalized	$ 78.6	$ 86.5
Income taxes, net of refunds	2.6	0.2
Right-of-use assets obtained in exchange for new operating lease liabilities	2.2	2.6
Right-of-use assets obtained in exchange for new finance lease liabilities	0.2	3.1
Non-cash investing transactions:
Property, plant and equipment additions	104.4	75.7
Non-cash financing transactions:
Issuance of stock for compensation and reinvested dividends	0.7	0.9
Variable Interest Entities
Cash paid for (received from):
Interest of VIEs	0.2	0.6
Evergy Kansas Central
Cash paid for (received from):
Interest, net of amount capitalized	31.2	37.4
Income taxes, net of refunds	2.6	0.2
Right-of-use assets obtained in exchange for new operating lease liabilities	1.5	2.6
Right-of-use assets obtained in exchange for new finance lease liabilities	0.2	1.9
Non-cash investing transactions:
Property, plant and equipment additions	45.4	52.5
Evergy Kansas Central \| Variable Interest Entities
Cash paid for (received from):
Interest of VIEs	0.2	0.6
Evergy Metro
Cash paid for (received from):
Interest, net of amount capitalized	18.6	18.7
Income taxes, net of refunds	(1.6)	0.0
Right-of-use assets obtained in exchange for new operating lease liabilities	0.7	0.0
Right-of-use assets obtained in exchange for new finance lease liabilities	0.0	1.2
Non-cash investing transactions:
Property, plant and equipment additions	$ 34.6	$ 17.8

REVENUE (Details) - USD ($) $ in Millions	3 Months Ended
REVENUE (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 1,462.4	$ 1,085.9
Other	149.5	30.8
Revenues	1,611.9	1,116.7
Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	784.1	542.2
Other	117.0	17.9
Revenues	901.1	560.1
Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	483.9	363.4
Other	32.3	12.1
Revenues	516.2	375.5
Residential
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	396.7	402.5
Residential \| Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	183.4	167.8
Residential \| Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	122.2	147.4
Revenues	516.2
Commercial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	346.0	384.7
Commercial \| Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	153.7	151.1
Commercial \| Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	132.5	172.1
Industrial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	133.6	140.6
Industrial \| Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	93.0	92.1
Industrial \| Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	22.3	30.1
Other retail
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	7.4	10.6
Other retail \| Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	3.2	4.7
Other retail \| Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2.1	3.5
Total electric retail
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	883.7	938.4
Total electric retail \| Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	433.3	415.7
Total electric retail \| Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	279.1	353.1
Wholesale
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	487.5	63.5
Wholesale \| Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	272.4	54.8
Wholesale \| Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	200.5	6.8
Transmission
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	86.0	75.6
Transmission \| Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	77.9	68.2
Transmission \| Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	4.0	3.1
Industrial steam and other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	5.2	8.4
Industrial steam and other \| Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0.5	3.5
Industrial steam and other \| Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 0.3	$ 0.4

RECEIVABLES (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables	$ 205.1	$ 177.9
Allowance for credit losses	(23.6)	(19.3)
Total	247.5	273.9
Evergy Kansas Central
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables	200.9	175.7
Allowance for credit losses	(8.8)	(7.5)
Total	209.1	218.9
Evergy Metro
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables	26.4	21.9
Allowance for credit losses	(9.9)	(8.1)
Total	37.9	45.0
Customer accounts receivable \| Billed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customer accounts receivable	3.8	5.3
Customer accounts receivable \| Billed \| Evergy Kansas Central
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customer accounts receivable	0.0	0.0
Customer accounts receivable \| Billed \| Evergy Metro
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customer accounts receivable	0.9	3.3
Customer accounts receivable \| Unbilled
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customer accounts receivable	62.2	110.0
Customer accounts receivable \| Unbilled \| Evergy Kansas Central
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customer accounts receivable	17.0	50.7
Customer accounts receivable \| Unbilled \| Evergy Metro
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customer accounts receivable	$ 20.5	$ 27.9

RECEIVABLES - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Entity Information [Line Items]
Other receivables, contracts with customers	$ 85.7	$ 57.5
Accounts receivable pledged as collateral	365.0	360.0
Evergy Kansas Central
Entity Information [Line Items]
Other receivables, contracts with customers	70.5	49.9
Accounts receivable pledged as collateral	185.0	180.0
Evergy Metro
Entity Information [Line Items]
Other receivables, contracts with customers	13.8	6.9
Accounts receivable pledged as collateral	130.0	$ 130.0
Maximum amount of outstanding principal under receivables agreement	130.0
Borrowings From Mid October Through Mid June \| Evergy Kansas Central
Entity Information [Line Items]
Maximum amount of outstanding principal under receivables agreement	185.0
Borrowing From Mid June Through Expiration \| Evergy Kansas Central
Entity Information [Line Items]
Maximum amount of outstanding principal under receivables agreement	200.0
Borrowing From Mid June Through Expiration \| Evergy Missouri West
Entity Information [Line Items]
Maximum amount of outstanding principal under receivables agreement	65.0
Borrowings From Mid-November Through Mid-June \| Evergy Missouri West
Entity Information [Line Items]
Maximum amount of outstanding principal under receivables agreement	$ 50.0

RECEIVABLES - Allowance for Credit Loses (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance January 1	$ 19.3	$ 10.5
Credit loss expense	4.8	2.7
Write-offs	(4.0)	(5.0)
Recoveries of prior write-offs	3.5	3.3
Ending balance March 31	23.6	11.5
Evergy Kansas Central
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance January 1	7.5	3.8
Credit loss expense	0.6	0.8
Write-offs	(0.5)	(1.2)
Recoveries of prior write-offs	1.2	0.7
Ending balance March 31	8.8	4.1
Evergy Metro
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance January 1	8.1	4.6
Credit loss expense	2.5	1.4
Write-offs	(2.3)	(2.6)
Recoveries of prior write-offs	1.6	1.8
Ending balance March 31	$ 9.9	$ 5.2

RECEIVABLES - Other Receivables (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables, contracts with customers	$ 85.7	$ 57.5
Evergy Kansas Central
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables, contracts with customers	70.5	49.9
Evergy Metro
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables, contracts with customers	$ 13.8	$ 6.9

RECEIVABLES - Pledged as Collateral (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable pledged as collateral	$ 365.0	$ 360.0
Evergy Kansas Central
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable pledged as collateral	185.0	180.0
Evergy Metro
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable pledged as collateral	$ 130.0	$ 130.0

RATE MATTERS AND REGULATION - Narrative (Details) $ in Millions	1 Months Ended			3 Months Ended
	May 31, 2021 USD ($)	Apr. 30, 2021 USD ($)	Feb. 28, 2021 USD ($)	Mar. 31, 2021 USD ($)
Evergy Metro
Regulatory Proceedings [Line Items]
Increase in Wholesale Revenues			$ 76.7
2018 Rate Case Proceedings \| Evergy Kansas Central \| 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%
2018 Rate Case Proceedings \| Evergy Metro \| 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%
2018 MPSC OPC MECG Petition
Regulatory Proceedings [Line Items]
Annual estimated loss contingency portion not accrued (up to)				$ 12.0
2018 MPSC OPC MECG Petition \| Revenues Probable Of Refund
Regulatory Proceedings [Line Items]
Regulatory liabilities				21.1
FERC 2021 TFR Proceeding \| Evergy Kansas Central \| Federal Energy Regulatory Commission
Regulatory Proceedings [Line Items]
Annual transmissions revenue estimated amount of increase (decrease) over prior year				32.4
FERC 2021 TFR Proceeding \| Evergy Metro \| 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 \| Evergy Kansas Central \| Federal Energy Regulatory Commission
Regulatory Proceedings [Line Items]
Annual transmissions revenue estimated amount of increase (decrease) over prior year				6.8
FERC 2020 TFR Proceeding \| Evergy Metro \| 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 \| Evergy Kansas Central \| CostsProbableofRefund
Regulatory Proceedings [Line Items]
Regulatory assets				$ 109.9
Subsequent Event \| Transmission delivery charge \| Evergy Kansas Central \| Kansas Corporation Commission
Regulatory Proceedings [Line Items]
Annual revenue increase (decrease) approved		$ 37.9
Subsequent Event \| Transmission delivery charge \| Evergy Metro \| Kansas Corporation Commission
Regulatory Proceedings [Line Items]
Annual revenue increase (decrease) approved	$ (2.4)

PENSION PLANS AND POST-RETIREMENT BENEFITS - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($)
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer	$ 27.8
Contributions to plans in next year	107.4
Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Contributions to plans remainder of year	4.0
Evergy Kansas Central \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer	17.4
Contributions to plans in next year	42.1
Evergy Kansas Central \| Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Contributions to plans remainder of year	0.6
Evergy Metro \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer	10.4
Contributions to plans in next year	65.3
Evergy Metro \| Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Contributions to plans remainder of year	$ 3.4
Wolf Creek
Defined Benefit Plan Disclosure [Line Items]
Jointly owned utility plant, proportionate ownership share	94.00%
Wolf Creek \| Evergy Kansas South Inc
Defined Benefit Plan Disclosure [Line Items]
Jointly owned utility plant, proportionate ownership share	47.00%
Wolf Creek \| Evergy Metro
Defined Benefit Plan Disclosure [Line Items]
Jointly owned utility plant, proportionate ownership share	47.00%

PENSION PLANS AND POST-RETIREMENT BENEFITS PENSION PLANS AND POST-RETIREMENT BENEFITS - Schedule of Components of Net Periodic Benefit Costs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 21.1	$ 19.6
Interest cost	21.3	24.4
Expected return on plan assets	(26.8)	(26.7)
Prior service cost	0.5	0.4
Recognized net actuarial (gain) loss	14.8	11.4
Net periodic benefit costs before regulatory adjustment and intercompany allocations	30.9	29.1
Regulatory adjustment	7.1	9.9
Intercompany allocations	0.0	0.0
Net periodic benefit costs (income)	38.0	39.0
Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.8	0.7
Interest cost	2.0	2.3
Expected return on plan assets	(2.2)	(2.3)
Prior service cost	0.1	0.1
Recognized net actuarial (gain) loss	0.3	0.1
Net periodic benefit costs before regulatory adjustment and intercompany allocations	1.0	0.9
Regulatory adjustment	(1.2)	(0.9)
Intercompany allocations	0.0	0.0
Net periodic benefit costs (income)	(0.2)	0.0
Evergy Kansas Central \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	7.4	6.8
Interest cost	10.3	11.8
Expected return on plan assets	(13.6)	(13.3)
Prior service cost	0.5	0.4
Recognized net actuarial (gain) loss	9.8	8.4
Net periodic benefit costs before regulatory adjustment and intercompany allocations	14.4	14.1
Regulatory adjustment	(0.9)	0.4
Intercompany allocations	0.4	0.0
Net periodic benefit costs (income)	13.9	14.5
Evergy Kansas Central \| Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.4	0.3
Interest cost	1.0	1.2
Expected return on plan assets	(1.6)	(1.7)
Prior service cost	0.1	0.1
Recognized net actuarial (gain) loss	0.2	0.0
Net periodic benefit costs before regulatory adjustment and intercompany allocations	0.1	(0.1)
Regulatory adjustment	(0.8)	(0.7)
Intercompany allocations	0.0	0.0
Net periodic benefit costs (income)	(0.7)	(0.8)
Evergy Metro \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	13.7	12.8
Interest cost	10.8	12.6
Expected return on plan assets	(14.5)	(14.1)
Prior service cost	0.0	0.2
Recognized net actuarial (gain) loss	11.2	11.3
Net periodic benefit costs before regulatory adjustment and intercompany allocations	21.2	22.8
Regulatory adjustment	3.0	1.4
Intercompany allocations	(5.9)	(6.2)
Net periodic benefit costs (income)	18.3	18.0
Evergy Metro \| Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.4	0.4
Interest cost	1.0	1.1
Expected return on plan assets	(0.7)	(0.7)
Prior service cost	(0.3)	0.0
Recognized net actuarial (gain) loss	0.0	(0.1)
Net periodic benefit costs before regulatory adjustment and intercompany allocations	0.4	0.7
Regulatory adjustment	0.1	0.0
Intercompany allocations	(0.1)	0.2
Net periodic benefit costs (income)	$ 0.4	$ 0.9

SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDIT - Narrative (Details) - Cash Borrowings	Mar. 31, 2021 USD ($)
Short-term Debt [Line Items]
Line of credit, maximum borrowing capacity	$ 2,500,000,000
Debt instrument, debt default, threshold	$ 100,000,000.0
Debt Instrument, debt to capitalization ratio (no more than)	65.00%
Evergy Kansas Central
Short-term Debt [Line Items]
Debt instrument, debt default, threshold	$ 100,000,000.0
Debt Instrument, debt to capitalization ratio (no more than)	65.00%
Evergy Metro
Short-term Debt [Line Items]
Debt instrument, debt default, threshold	$ 100,000,000.0
Debt Instrument, debt to capitalization ratio (no more than)	65.00%
Evergy Missouri West
Short-term Debt [Line Items]
Debt instrument, debt default, threshold	$ 100,000,000.0
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	Mar. 31, 2021	Dec. 31, 2020
Short-term Debt [Line Items]
Master Credit Facility	$ 2,500.0	$ 2,500.0
Available Borrowings	1,203.5	2,165.3
Evergy, Inc.
Short-term Debt [Line Items]
Master Credit Facility	700.0	450.0
Available Borrowings	$ 354.3	$ 249.3
Weighted Average Interest Rate on Short-Term Borrowings	1.36%	1.40%
Evergy Kansas Central
Short-term Debt [Line Items]
Master Credit Facility	$ 750.0	$ 1,000.0
Available Borrowings	$ 504.2	$ 933.0
Weighted Average Interest Rate on Short-Term Borrowings	0.23%	0.23%
Evergy Metro
Short-term Debt [Line Items]
Master Credit Facility	$ 350.0	$ 600.0
Available Borrowings	$ 235.0	$ 600.0
Weighted Average Interest Rate on Short-Term Borrowings	0.17%	0.00%
Evergy Missouri West
Short-term Debt [Line Items]
Master Credit Facility	$ 700.0	$ 450.0
Available Borrowings	$ 110.0	$ 383.0
Weighted Average Interest Rate on Short-Term Borrowings	0.24%	0.36%
Commercial Paper
Short-term Debt [Line Items]
Long-term line of credit	$ 950.0	$ 115.0
Commercial Paper \| Evergy Kansas Central
Short-term Debt [Line Items]
Long-term line of credit	245.0	50.0
Commercial Paper \| Evergy Metro
Short-term Debt [Line Items]
Long-term line of credit	115.0	0.0
Commercial Paper \| Evergy Missouri West
Short-term Debt [Line Items]
Long-term line of credit	590.0	65.0
Letters of Credit
Short-term Debt [Line Items]
Letters of Credit	1.5	19.7
Letters of Credit \| Evergy, Inc.
Short-term Debt [Line Items]
Letters of Credit	0.7	0.7
Letters of Credit \| Evergy Kansas Central
Short-term Debt [Line Items]
Letters of Credit	0.8	17.0
Letters of Credit \| Evergy Metro
Short-term Debt [Line Items]
Letters of Credit	0.0	0.0
Letters of Credit \| Evergy Missouri West
Short-term Debt [Line Items]
Letters of Credit	0.0	2.0
Cash Borrowings
Short-term Debt [Line Items]
Long-term line of credit	345.0	200.0
Cash Borrowings \| Evergy, Inc.
Short-term Debt [Line Items]
Long-term line of credit	345.0	200.0
Cash Borrowings \| Evergy Kansas Central
Short-term Debt [Line Items]
Long-term line of credit	0.0	0.0
Cash Borrowings \| Evergy Metro
Short-term Debt [Line Items]
Long-term line of credit	0.0	0.0
Cash Borrowings \| Evergy Missouri West
Short-term Debt [Line Items]
Long-term line of credit	$ 0.0	$ 0.0

LONG-TERM DEBT - Narrative (Details) - Subsequent Event - Senior Notes $ in Millions	Apr. 30, 2021 USD ($)
Senior Notes Due 2021
Debt Instrument [Line Items]
Interest rate	4.85%
Long-term debt gross	$ 350.0
Evergy Missouri West \| Senior Notes Series A due 2031 EMW
Debt Instrument [Line Items]
Interest rate	2.86%
Long-term debt gross	$ 350.0
Evergy Missouri West \| Senior Notes Series B due 2033 EMW
Debt Instrument [Line Items]
Interest rate	3.01%
Long-term debt gross	$ 75.0
Evergy Missouri West \| Senior Notes Series C due 2036 EMW
Debt Instrument [Line Items]
Interest rate	3.21%
Long-term debt gross	$ 75.0
Evergy Missouri West \| Senior Notes Due 2025 EMW
Debt Instrument [Line Items]
Interest rate	3.49%
Long-term debt gross	$ 36.0
Evergy Missouri West \| Senior Notes Due 2033 EMW
Debt Instrument [Line Items]
Interest rate	4.06%
Long-term debt gross	$ 60.0
Evergy Missouri West \| Senior Notes Due 2043 EMW
Debt Instrument [Line Items]
Interest rate	4.74%
Long-term debt gross	$ 150.0
Evergy Missouri West \| Senior Notes Series Due 2022 EMW
Debt Instrument [Line Items]
Interest rate	3.74%
Long-term debt gross	$ 100.0

FAIR VALUE MEASUREMENTS - Long-Term Debt (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Book Value \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	$ 9,624.1	$ 9,627.3
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	10,429.2	11,274.2
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
Evergy Kansas Central \| Book Value \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	3,932.2	3,931.5
Evergy Kansas Central \| 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
Evergy Kansas Central \| Fair Value \| Fair Value, Measurements, Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	4,348.5	4,801.7
Evergy Kansas Central \| 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
Evergy Metro \| Book Value \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	2,923.5	2,923.0
Evergy Metro \| Fair Value \| Fair Value, Measurements, Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	3,312.1	3,591.2
Long-Term debt fair value adjustment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt gross	$ 106.6	$ 110.4

FAIR VALUE MEASUREMENTS - Recurring (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Assets
Total nuclear decommissioning trust	$ 686.5	$ 652.1
Total rabbi trust	44.8	46.3
Total self-insured health plan trust	14.4	13.2
Total Assets	745.7	711.6
Level 1
Assets
Total nuclear decommissioning trust	588.5	560.6
Total rabbi trust	44.8	0.5
Total self-insured health plan trust	8.8	8.0
Total Assets	642.1	569.1
Level 2
Assets
Total nuclear decommissioning trust	48.4	47.8
Total rabbi trust	0.0	0.0
Total self-insured health plan trust	5.6	5.2
Total Assets	54.0	53.0
Level 3
Assets
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
NAV
Assets
Total nuclear decommissioning trust	49.6	43.7
Total rabbi trust	0.0	45.8
Total self-insured health plan trust	0.0	0.0
Total Assets	49.6	89.5
Evergy Kansas Central
Assets
Total nuclear decommissioning trust	327.7	309.8
Total rabbi trust	31.6	32.7
Total Assets	359.3	342.5
Evergy Kansas Central \| Core bond fund
Assets
Total nuclear decommissioning trust	40.0	40.6
Total rabbi trust		25.6
Evergy Kansas Central \| High-yield bond fund
Assets
Total nuclear decommissioning trust	26.1	25.0
Evergy Kansas Central \| Emerging markets bond fund
Assets
Total nuclear decommissioning trust	20.3	21.0
Evergy Kansas Central \| Equity funds
Assets
Total rabbi trust	5.0
Evergy Kansas Central \| Combination debt/equity/other fund
Assets
Total nuclear decommissioning trust	22.1	20.1
Total rabbi trust	0.7	7.1
Evergy Kansas Central \| Alternative investments fund
Assets
Total nuclear decommissioning trust	28.1	23.2
Evergy Kansas Central \| Real estate securities fund
Assets
Total nuclear decommissioning trust	13.1	12.9
Evergy Kansas Central \| Cash equivalents
Assets
Total nuclear decommissioning trust	0.4	0.5
Total rabbi trust	0.1
Evergy Kansas Central \| Fixed income funds
Assets
Total rabbi trust	25.8
Evergy Kansas Central \| Level 1
Assets
Total nuclear decommissioning trust	278.1	266.1
Total rabbi trust	31.6	0.0
Total Assets	309.7	266.1
Evergy Kansas Central \| Level 1 \| Core bond fund
Assets
Total nuclear decommissioning trust	40.0	40.6
Total rabbi trust		0.0
Evergy Kansas Central \| Level 1 \| High-yield bond fund
Assets
Total nuclear decommissioning trust	26.1	25.0
Evergy Kansas Central \| Level 1 \| Emerging markets bond fund
Assets
Total nuclear decommissioning trust	20.3	21.0
Evergy Kansas Central \| Level 1 \| Equity funds
Assets
Total rabbi trust	5.0
Evergy Kansas Central \| Level 1 \| Combination debt/equity/other fund
Assets
Total nuclear decommissioning trust	22.1	20.1
Total rabbi trust	0.7	0.0
Evergy Kansas Central \| Level 1 \| Alternative investments fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Kansas Central \| Level 1 \| Real estate securities fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Kansas Central \| Level 1 \| Cash equivalents
Assets
Total nuclear decommissioning trust	0.4	0.5
Total rabbi trust	0.1
Evergy Kansas Central \| Level 1 \| Fixed income funds
Assets
Total rabbi trust	25.8
Evergy Kansas Central \| Level 2
Assets
Total nuclear decommissioning trust	0.0	0.0
Total rabbi trust	0.0	0.0
Total Assets	0.0	0.0
Evergy Kansas Central \| Level 2 \| Core bond fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Total rabbi trust		0.0
Evergy Kansas Central \| Level 2 \| High-yield bond fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Kansas Central \| Level 2 \| Emerging markets bond fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Kansas Central \| Level 2 \| Equity funds
Assets
Total rabbi trust	0.0
Evergy Kansas Central \| Level 2 \| Combination debt/equity/other fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Total rabbi trust	0.0	0.0
Evergy Kansas Central \| Level 2 \| Alternative investments fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Kansas Central \| Level 2 \| Real estate securities fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Kansas Central \| Level 2 \| Cash equivalents
Assets
Total nuclear decommissioning trust	0.0	0.0
Total rabbi trust	0.0
Evergy Kansas Central \| Level 2 \| Fixed income funds
Assets
Total rabbi trust	0.0
Evergy Kansas Central \| Level 3
Assets
Total nuclear decommissioning trust	0.0	0.0
Total rabbi trust	0.0	0.0
Total Assets	0.0	0.0
Evergy Kansas Central \| Level 3 \| Core bond fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Total rabbi trust		0.0
Evergy Kansas Central \| Level 3 \| High-yield bond fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Kansas Central \| Level 3 \| Emerging markets bond fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Kansas Central \| Level 3 \| Equity funds
Assets
Total rabbi trust	0.0
Evergy Kansas Central \| Level 3 \| Combination debt/equity/other fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Total rabbi trust	0.0	0.0
Evergy Kansas Central \| Level 3 \| Alternative investments fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Kansas Central \| Level 3 \| Real estate securities fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Kansas Central \| Level 3 \| Cash equivalents
Assets
Total nuclear decommissioning trust	0.0	0.0
Total rabbi trust	0.0
Evergy Kansas Central \| Level 3 \| Fixed income funds
Assets
Total rabbi trust	0.0
Evergy Kansas Central \| NAV
Assets
Total nuclear decommissioning trust	49.6	43.7
Total rabbi trust	0.0	32.7
Total Assets	49.6	76.4
Evergy Kansas Central \| NAV \| Core bond fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Total rabbi trust	0.0	25.6
Evergy Kansas Central \| NAV \| High-yield bond fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Kansas Central \| NAV \| Emerging markets bond fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Kansas Central \| NAV \| Equity funds
Assets
Total rabbi trust	0.0
Evergy Kansas Central \| NAV \| Combination debt/equity/other fund
Assets
Total nuclear decommissioning trust	0.0	0.0
Total rabbi trust	0.0	7.1
Evergy Kansas Central \| NAV \| Alternative investments fund
Assets
Total nuclear decommissioning trust	28.1	23.2
Evergy Kansas Central \| NAV \| Real estate securities fund
Assets
Total nuclear decommissioning trust	13.1	12.9
Evergy Kansas Central \| NAV \| Cash equivalents
Assets
Total nuclear decommissioning trust	0.0	0.0
Total rabbi trust	0.0
Evergy Kansas Central \| NAV \| Fixed income funds
Assets
Total rabbi trust	0.0
Evergy Kansas Central \| Domestic \| Equity securities
Assets
Total nuclear decommissioning trust	110.3	102.7
Evergy Kansas Central \| Domestic \| Level 1 \| Equity securities
Assets
Total nuclear decommissioning trust	101.9	95.1
Evergy Kansas Central \| Domestic \| Level 2 \| Equity securities
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Kansas Central \| Domestic \| Level 3 \| Equity securities
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Kansas Central \| Domestic \| NAV \| Equity securities
Assets
Total nuclear decommissioning trust	8.4	7.6
Evergy Kansas Central \| International \| Equity securities
Assets
Total nuclear decommissioning trust	67.3	63.8
Evergy Kansas Central \| International \| Level 1 \| Equity securities
Assets
Total nuclear decommissioning trust	67.3	63.8
Evergy Kansas Central \| International \| Level 2 \| Equity securities
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Kansas Central \| International \| Level 3 \| Equity securities
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Kansas Central \| International \| NAV \| Equity securities
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro
Assets
Total nuclear decommissioning trust	358.8	342.3
Total self-insured health plan trust	14.4	13.2
Total Assets	373.2	355.5
Evergy Metro \| Equity securities
Assets
Total nuclear decommissioning trust	262.9	243.1
Total self-insured health plan trust	1.8	1.7
Evergy Metro \| Cash equivalents
Assets
Total nuclear decommissioning trust	2.5	3.2
Evergy Metro \| U.S. Treasury
Assets
Total nuclear decommissioning trust	45.0	47.7
Evergy Metro \| U.S. Agency
Assets
Total nuclear decommissioning trust	0.4	0.5
Evergy Metro \| State and local obligations
Assets
Total nuclear decommissioning trust	4.1	4.1
Evergy Metro \| Corporate bonds
Assets
Total nuclear decommissioning trust	43.1	43.1
Evergy Metro \| Foreign governments
Assets
Total nuclear decommissioning trust	0.1	0.1
Evergy Metro \| Other
Assets
Total nuclear decommissioning trust	0.7	0.5
Evergy Metro \| Debt securities
Assets
Total self-insured health plan trust	8.6	8.0
Evergy Metro \| Cash and cash equivalents
Assets
Total self-insured health plan trust	4.0	3.5
Evergy Metro \| Level 1
Assets
Total nuclear decommissioning trust	310.4	294.5
Total self-insured health plan trust	8.8	8.0
Total Assets	319.2	302.5
Evergy Metro \| Level 1 \| Equity securities
Assets
Total nuclear decommissioning trust	262.9	243.1
Total self-insured health plan trust	1.8	1.7
Evergy Metro \| Level 1 \| Cash equivalents
Assets
Total nuclear decommissioning trust	2.5	3.2
Evergy Metro \| Level 1 \| U.S. Treasury
Assets
Total nuclear decommissioning trust	45.0	47.7
Evergy Metro \| Level 1 \| U.S. Agency
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro \| Level 1 \| State and local obligations
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro \| Level 1 \| Corporate bonds
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro \| Level 1 \| Foreign governments
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro \| Level 1 \| Other
Assets
Total nuclear decommissioning trust	0.0	0.5
Evergy Metro \| Level 1 \| Debt securities
Assets
Total self-insured health plan trust	3.0	2.8
Evergy Metro \| Level 1 \| Cash and cash equivalents
Assets
Total self-insured health plan trust	4.0	3.5
Evergy Metro \| Level 2
Assets
Total nuclear decommissioning trust	48.4	47.8
Total self-insured health plan trust	5.6	5.2
Total Assets	54.0	53.0
Evergy Metro \| Level 2 \| Equity securities
Assets
Total nuclear decommissioning trust	0.0	0.0
Total self-insured health plan trust	0.0	0.0
Evergy Metro \| Level 2 \| Cash equivalents
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro \| Level 2 \| U.S. Treasury
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro \| Level 2 \| U.S. Agency
Assets
Total nuclear decommissioning trust	0.4	0.5
Evergy Metro \| Level 2 \| State and local obligations
Assets
Total nuclear decommissioning trust	4.1	4.1
Evergy Metro \| Level 2 \| Corporate bonds
Assets
Total nuclear decommissioning trust	43.1	43.1
Evergy Metro \| Level 2 \| Foreign governments
Assets
Total nuclear decommissioning trust	0.1	0.1
Evergy Metro \| Level 2 \| Other
Assets
Total nuclear decommissioning trust	0.7	0.0
Evergy Metro \| Level 2 \| Debt securities
Assets
Total self-insured health plan trust	5.6	5.2
Evergy Metro \| Level 2 \| Cash and cash equivalents
Assets
Total self-insured health plan trust	0.0	0.0
Evergy Metro \| Level 3
Assets
Total nuclear decommissioning trust	0.0	0.0
Total self-insured health plan trust	0.0	0.0
Total Assets	0.0	0.0
Evergy Metro \| Level 3 \| Equity securities
Assets
Total nuclear decommissioning trust	0.0	0.0
Total self-insured health plan trust	0.0	0.0
Evergy Metro \| Level 3 \| Cash equivalents
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro \| Level 3 \| U.S. Treasury
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro \| Level 3 \| U.S. Agency
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro \| Level 3 \| State and local obligations
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro \| Level 3 \| Corporate bonds
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro \| Level 3 \| Foreign governments
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro \| Level 3 \| Other
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro \| Level 3 \| Debt securities
Assets
Total self-insured health plan trust	0.0	0.0
Evergy Metro \| Level 3 \| Cash and cash equivalents
Assets
Total self-insured health plan trust	0.0	0.0
Evergy Metro \| NAV
Assets
Total nuclear decommissioning trust	0.0	0.0
Total self-insured health plan trust	0.0	0.0
Total Assets	0.0	0.0
Evergy Metro \| NAV \| Equity securities
Assets
Total nuclear decommissioning trust	0.0	0.0
Total self-insured health plan trust	0.0	0.0
Evergy Metro \| NAV \| Cash equivalents
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro \| NAV \| U.S. Treasury
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro \| NAV \| U.S. Agency
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro \| NAV \| State and local obligations
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro \| NAV \| Corporate bonds
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro \| NAV \| Foreign governments
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro \| NAV \| Other
Assets
Total nuclear decommissioning trust	0.0	0.0
Evergy Metro \| NAV \| Debt securities
Assets
Total self-insured health plan trust	0.0	0.0
Evergy Metro \| NAV \| Cash and cash equivalents
Assets
Total self-insured health plan trust	0.0	0.0
Other Evergy
Assets
Total rabbi trust	13.2	13.6
Other Evergy \| Core bond fund
Assets
Total rabbi trust	12.7
Other Evergy \| Fixed income funds
Assets
Total rabbi trust		13.1
Other Evergy \| Cash and cash equivalents
Assets
Total rabbi trust	0.5	0.5
Other Evergy \| Level 1
Assets
Total rabbi trust	13.2	0.5
Other Evergy \| Level 1 \| Core bond fund
Assets
Total rabbi trust	12.7
Other Evergy \| Level 1 \| Fixed income funds
Assets
Total rabbi trust		0.0
Other Evergy \| Level 1 \| Cash and cash equivalents
Assets
Total rabbi trust	0.5	0.5
Other Evergy \| Level 2
Assets
Total rabbi trust	0.0	0.0
Other Evergy \| Level 2 \| Core bond fund
Assets
Total rabbi trust	0.0
Other Evergy \| Level 2 \| Fixed income funds
Assets
Total rabbi trust		0.0
Other Evergy \| Level 2 \| Cash and cash equivalents
Assets
Total rabbi trust	0.0	0.0
Other Evergy \| Level 3
Assets
Total rabbi trust	0.0	0.0
Other Evergy \| Level 3 \| Core bond fund
Assets
Total rabbi trust	0.0
Other Evergy \| Level 3 \| Fixed income funds
Assets
Total rabbi trust		0.0
Other Evergy \| Level 3 \| Cash and cash equivalents
Assets
Total rabbi trust	0.0	0.0
Other Evergy \| NAV
Assets
Total rabbi trust	0.0	13.1
Other Evergy \| NAV \| Core bond fund
Assets
Total rabbi trust	0.0
Other Evergy \| NAV \| Fixed income funds
Assets
Total rabbi trust		13.1
Other Evergy \| NAV \| Cash and cash equivalents
Assets
Total rabbi trust	$ 0.0	$ 0.0

FAIR VALUE MEASUREMENTS - NAV (Details) $ in Millions	3 Months Ended
FAIR VALUE MEASUREMENTS - NAV (Details) $ in Millions	Mar. 31, 2021 USD ($) fund extension	Dec. 31, 2020 USD ($)
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	$ 1.9	$ 2.2
Evergy Kansas Central \| Alternative investments fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	0.0	0.0
Evergy Kansas Central \| Real estate securities fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	0.0	0.0
Evergy Kansas Central \| Nuclear decommissioning trust:
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	1.9	2.2
Evergy Kansas Central \| Core bond fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	0.0	0.0
Evergy Kansas Central \| Combination debt/equity/other fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	0.0	0.0
Evergy Kansas Central \| Rabbi trust:
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	0.0	0.0
Other Evergy
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	0.0	0.0
Domestic \| Evergy Kansas Central \| Equity securities
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	$ 1.9	2.2
NAV, number of funds \| fund	5
NAV, number of funds making distributions \| fund	3
Domestic \| Evergy Kansas Central \| 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 \| Evergy Kansas Central \| 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	$ 686.5	652.1
Total rabbi trust	44.8	46.3
Total Assets	745.7	711.6
Fair Value, Measurements, Recurring \| Evergy Kansas Central
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	327.7	309.8
Total rabbi trust	31.6	32.7
Total Assets	359.3	342.5
Fair Value, Measurements, Recurring \| Evergy Kansas Central \| Alternative investments fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	28.1	23.2
Fair Value, Measurements, Recurring \| Evergy Kansas Central \| Real estate securities fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	13.1	12.9
Fair Value, Measurements, Recurring \| Evergy Kansas Central \| Core bond fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	40.0	40.6
Total rabbi trust		25.6
Fair Value, Measurements, Recurring \| Evergy Kansas Central \| Combination debt/equity/other fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	22.1	20.1
Total rabbi trust	0.7	7.1
Fair Value, Measurements, Recurring \| Other Evergy
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total rabbi trust	13.2	13.6
Fair Value, Measurements, Recurring \| Other Evergy \| Core bond fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total rabbi trust	12.7
Fair Value, Measurements, Recurring \| Domestic \| Evergy Kansas Central \| Equity securities
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	110.3	102.7
NAV \| Fair Value, Measurements, Recurring
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	49.6	43.7
Total rabbi trust	0.0	45.8
Total Assets	49.6	89.5
NAV \| Fair Value, Measurements, Recurring \| Evergy Kansas Central
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	49.6	43.7
Total rabbi trust	0.0	32.7
Total Assets	49.6	76.4
NAV \| Fair Value, Measurements, Recurring \| Evergy Kansas Central \| Alternative investments fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	$ 28.1	23.2
Length of Settlement	65 days
NAV \| Fair Value, Measurements, Recurring \| Evergy Kansas Central \| Real estate securities fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	$ 13.1	12.9
Length of Settlement	65 days
NAV \| Fair Value, Measurements, Recurring \| Evergy Kansas Central \| Nuclear decommissioning trust:
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	$ 49.6	43.7
NAV \| Fair Value, Measurements, Recurring \| Evergy Kansas Central \| 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 \| Evergy Kansas Central \| Combination debt/equity/other 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	7.1
NAV \| Fair Value, Measurements, Recurring \| Evergy Kansas Central \| 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 \| Other Evergy
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total rabbi trust	0.0	13.1
NAV \| Fair Value, Measurements, Recurring \| Other Evergy \| Core bond fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total rabbi trust	0.0
NAV \| Fair Value, Measurements, Recurring \| Domestic \| Evergy Kansas Central \| Equity securities
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	$ 8.4	$ 7.6

FAIR VALUE MEASUREMENTS - Gains (Losses) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gain (losses)	$ 26.7	$ (88.3)
Nuclear decommissioning trust - equity securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gain (losses)	33.1	(89.3)
Nuclear decommissioning trust - debt securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gain (losses)	(5.1)	3.0
Rabbi trusts - equity securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gain (losses)	(1.3)	(2.0)
Evergy Kansas Central
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gain (losses)	13.5	(40.2)
Evergy Kansas Central \| Nuclear decommissioning trust - equity securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gain (losses)	14.3	(38.1)
Evergy Kansas Central \| Rabbi trusts - equity securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gain (losses)	(0.8)	(2.1)
Evergy Metro
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gain (losses)	13.7	(48.2)
Evergy Metro \| Nuclear decommissioning trust - equity securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gain (losses)	18.8	(51.2)
Evergy Metro \| Nuclear decommissioning trust - debt securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gain (losses)	$ (5.1)	$ 3.0

RELATED PARTY TRANSACTIONS AND RELATIONSHIPS (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Evergy Metro \| Evergy Inc Money Pool
Related Party Transaction [Line Items]
Due from Related Parties, Current			$ 100.0
Due to Related Parties, Current			0.0
Due from (to) related parties	$ 0.0
Evergy Metro \| Evergy Missouri West
Related Party Transaction [Line Items]
Due from (to) related parties	379.6		188.1
Evergy Metro \| Evergy Missouri West \| Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	34.7	$ 39.3
Evergy Metro \| Evergy Kansas Central
Related Party Transaction [Line Items]
Due from (to) related parties	8.7		21.7
Evergy Metro \| Evergy Kansas Central \| Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	25.7	48.1
Evergy Metro \| Evergy
Related Party Transaction [Line Items]
Due from (to) related parties	19.4		15.7
Evergy Metro \| Evergy \| Income Tax Receivable
Related Party Transaction [Line Items]
Due from (to) related parties	(26.7)
Evergy Metro \| Evergy \| Income Taxes Payable
Related Party Transaction [Line Items]
Due from (to) related parties			(3.2)
Evergy Kansas Central \| Evergy Missouri West
Related Party Transaction [Line Items]
Due from (to) related parties	9.5		6.6
Evergy Kansas Central \| Evergy Missouri West \| Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	9.5	4.3
Evergy Kansas Central \| Evergy Metro
Related Party Transaction [Line Items]
Due from (to) related parties	(8.7)		(21.7)
Evergy Kansas Central \| Evergy Metro \| Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	9.9	$ 15.0
Evergy Kansas Central \| Evergy
Related Party Transaction [Line Items]
Due from (to) related parties	0.9		0.1
Evergy Kansas Central \| Evergy \| Income Tax Receivable
Related Party Transaction [Line Items]
Due from (to) related parties	19.0		25.3
Evergy Kansas Central \| Evergy Metro \| Subsidiary of Common Parent
Related Party Transaction [Line Items]
Right-of-use assets under operating leases	28.8		28.9
Lease liability recorded in other current liabilities	0.7		0.7
Total long-term obligations under operating leases	$ 28.1		$ 28.2
Jointly Owned Electricity Generation Plant Iatan No 1 And 2 \| Evergy Missouri West
Related Party Transaction [Line Items]
Jointly owned utility plant, proportionate ownership share	18.00%
Jeffrey Energy Center \| Evergy Missouri West
Related Party Transaction [Line Items]
Jointly owned utility plant, proportionate ownership share	8.00%
La Cygne Station \| Evergy Kansas Central
Related Party Transaction [Line Items]
Jointly owned utility plant, proportionate ownership share	50.00%

SHAREHOLDERS' EQUITY - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	Mar. 31, 2021	Feb. 28, 2021	Dec. 31, 2020
Line of Credit Facility [Line Items]
Common stock, shares authorized (in shares)	600,000,000		600,000,000
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
Cash Borrowings
Line of Credit Facility [Line Items]
Debt instrument, debt to capitalization ratio (no more than)	65.00%
Evergy Kansas Central
Line of Credit Facility [Line Items]
Common stock, shares authorized (in shares)	1,000		1,000
Evergy Kansas Central \| Cash Borrowings
Line of Credit Facility [Line Items]
Debt instrument, debt to capitalization ratio (no more than)	65.00%
Evergy Metro
Line of Credit Facility [Line Items]
Common stock, shares authorized (in shares)	1,000		1,000
Evergy Metro \| Cash Borrowings
Line of Credit Facility [Line Items]
Debt instrument, debt to capitalization ratio (no more than)	65.00%
Evergy Missouri West \| Cash Borrowings
Line of Credit Facility [Line Items]
Debt instrument, debt to capitalization ratio (no more than)	65.00%

TAXES - Income Tax Expense (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Current income taxes
Federal	$ 1.1	$ 2.4
State	1.9	(0.4)
Total	3.0	2.0
Deferred income taxes
Federal	17.7	6.0
State	3.8	2.8
Total	21.5	8.8
Investment Tax Credits
Amortization	(1.5)	(0.7)
Income tax expense	$ 23.0	$ 10.1
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Federal statutory income tax rate	21.00%	21.00%
Effect of:
COLI policies	(1.00%)	(1.60%)
State income taxes	1.90%	2.30%
Flow through depreciation for plant-related differences	(5.80%)	(3.90%)
Federal tax credits	(3.10%)	(4.50%)
Non-controlling interest	(0.30%)	(0.30%)
AFUDC equity	(0.70%)	(0.30%)
Amortization of federal investment tax credits	(0.40%)	(0.50%)
Stock compensation	0.20%	0.10%
Officer compensation limitation	0.40%	0.10%
Other	(1.60%)	(0.20%)
Effective income tax rate	10.60%	12.20%
Evergy Kansas Central
Current income taxes
Federal	$ 7.5	$ 24.2
State	1.2	(0.4)
Total	8.7	23.8
Deferred income taxes
Federal	6.7	(18.2)
State	2.3	2.6
Total	9.0	(15.6)
Investment Tax Credits
Amortization	(1.1)	(0.4)
Income tax expense	$ 16.6	$ 7.8
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Federal statutory income tax rate	21.00%	21.00%
Effect of:
COLI policies	(1.80%)	(3.10%)
State income taxes	1.20%	2.70%
Flow through depreciation for plant-related differences	(3.30%)	0.00%
Federal tax credits	(5.20%)	(6.60%)
Non-controlling interest	(0.50%)	(0.60%)
AFUDC equity	(0.80%)	(0.40%)
Amortization of federal investment tax credits	(0.50%)	(0.70%)
Stock compensation	(0.10%)	(0.10%)
Officer compensation limitation	0.20%	0.00%
Other	(1.80%)	0.10%
Effective income tax rate	8.40%	12.30%
Evergy Metro
Current income taxes
Federal	$ 27.1	$ 11.6
State	1.2	1.2
Total	28.3	12.8
Deferred income taxes
Federal	(22.0)	(9.5)
State	(0.8)	(0.4)
Total	(22.8)	(9.9)
Investment Tax Credits
Amortization	(0.4)	(0.3)
Income tax expense	$ 5.1	$ 2.6
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Federal statutory income tax rate	21.00%	21.00%
Effect of:
COLI policies	(0.20%)	0.00%
State income taxes	0.60%	2.20%
Flow through depreciation for plant-related differences	(7.80%)	(7.70%)
Federal tax credits	(0.60%)	(2.40%)
AFUDC equity	(0.70%)	(0.20%)
Amortization of federal investment tax credits	(0.40%)	(0.40%)
Stock compensation	0.40%	(3.60%)
Officer compensation limitation	0.90%	0.00%
Other	0.10%	0.40%
Effective income tax rate	13.30%	9.30%