Evergy (EVRG) 10-Q 6 Nov 24 2024 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2024	Oct. 31, 2024
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2024
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	NASDAQ
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		229,976,171
Entity Central Index Key	0001711269
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q3
Amendment Flag	false
Document Fiscal Year Focus	2024
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

Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
CURRENT ASSETS:
Cash and cash equivalents	$ 34.6			$ 27.7
Receivables, net of allowance for credit losses of $13.9 and $24.2, respectively	386.8			256.9
Accounts receivable pledged as collateral	425			342
Fuel inventory and supplies	818.9			776.2
Income taxes receivable	19.1			11.5
Regulatory assets, includes $15.6 and $— related to variable interest entity, respectively	182.2			292.1
Prepaid expenses	63.2			51.3
Other	60.4			31.4
Total Current Assets	1,990.2			1,789.1
PROPERTY, PLANT AND EQUIPMENT, NET, includes $128.3 and $133.6 related to variable interest entity, respectively	24,613.4			23,728.7
OTHER ASSETS:
Regulatory assets, includes $298.6 and $— related to variable interest entity, respectively	1,769.8			1,795.3
Nuclear decommissioning trust	877.4			766.4
Goodwill	2,336.6			2,336.6
Other	558.7			560
Total Other Assets	5,542.5			5,458.3
TOTAL ASSETS	32,146.1			30,976.1
CURRENT LIABILITIES:
Current maturities of long-term debt, includes $19.5 and $— related to variable interest entity, respectively	404.8			800
Commercial paper	1,422.8			951.8
Collateralized note payable	425			342
Accounts payable	366.3			616.9
Accrued taxes	338.6			156.7
Accrued interest, includes $10.2 and $— related to variable interest entity, respectively	169.8			134.2
Regulatory liabilities	149.4			183
Asset retirement obligations	46.4			40.3
Accrued compensation and benefits	73.9			74.5
Other	210.1			213.2
Total Current Liabilities	3,607.1			3,512.6
LONG-TERM LIABILITIES:
Long-term debt, net, includes $303.8 and $— related to variable interest entity, respectively	11,571.1			11,053.3
Deferred income taxes	2,214.2			2,097.9
Unamortized investment tax credits	164.6			170
Regulatory liabilities	2,478			2,542.5
Pension and post-retirement liability	498.1			464.1
Asset retirement obligations	1,263.9			1,162.8
Other	292.9			287.9
Total Long-Term Liabilities	18,482.8			17,778.5
Evergy, Inc. Shareholders' Equity:
Common stock	7,242.4			7,234.9
Retained earnings	2,808.3			2,457.8
Accumulated other comprehensive loss	(25.6)			(29.6)
Total Evergy, Inc. Shareholders' Equity	10,025.1			9,663.1
Noncontrolling Interests	31.1			21.9
Total Equity	10,056.2	$ 9,731.7	$ 9,664.1	9,685	$ 9,767.8	$ 9,550.7	$ 9,501.7	$ 9,493.3
TOTAL LIABILITIES AND EQUITY	32,146.1			30,976.1
Variable Interest Entities
CURRENT ASSETS:
Regulatory assets, includes $15.6 and $— related to variable interest entity, respectively	15.6			0
PROPERTY, PLANT AND EQUIPMENT, NET, includes $128.3 and $133.6 related to variable interest entity, respectively	128.3			133.6
OTHER ASSETS:
Regulatory assets, includes $298.6 and $— related to variable interest entity, respectively	298.6			0
CURRENT LIABILITIES:
Current maturities of long-term debt, includes $19.5 and $— related to variable interest entity, respectively	19.5			0
Accrued interest, includes $10.2 and $— related to variable interest entity, respectively	10.2			0
LONG-TERM LIABILITIES:
Long-term debt, net, includes $303.8 and $— related to variable interest entity, respectively	$ 303.8			$ 0

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Allowance for credit losses	$ 13.9	$ 24.2
Regulatory assets	182.2	292.1
PROPERTY, PLANT AND EQUIPMENT, NET, includes $128.3 and $133.6 related to variable interest entity, respectively	24,613.4	23,728.7
Current maturities of long-term debt	404.8	800
Long-term debt, net	$ 11,571.1	$ 11,053.3
Common stock - shares authorized (in shares)	600,000,000	600,000,000
Common stock - shares issued (in shares)	229,972,832	229,729,296
Variable Interest Entities
Regulatory assets	$ 15.6	$ 0
PROPERTY, PLANT AND EQUIPMENT, NET, includes $128.3 and $133.6 related to variable interest entity, respectively	128.3	133.6
Current maturities of long-term debt	19.5	0
Long-term debt, net	$ 303.8	$ 0

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
OPERATING REVENUES	$ 1,811.4	$ 1,669.3	$ 4,589.9	$ 4,320.3
OPERATING EXPENSES:
Fuel and purchased power	433.7	478.4	1,169.1	1,177.4
SPP network transmission costs	99.7	75.4	272.4	232
Operating and maintenance	251.6	253.2	720.8	697.1
Depreciation and amortization	282.3	273.3	838.5	806.1
Taxes other than income tax	116.6	103.1	343.3	305.9
Total Operating Expenses	1,183.9	1,183.4	3,344.1	3,218.5
INCOME FROM OPERATIONS	627.5	485.9	1,245.8	1,101.8
OTHER INCOME (EXPENSE):
Investment earnings (loss)	(0.1)	6.2	7.8	22
Other income	12.9	19.3	31.2	34.1
Other expense	(9.8)	(12.8)	(30.7)	(55.1)
Total Other Income, Net	3	12.7	8.3	1
Interest expense	143.9	136.8	420.7	393.6
INCOME BEFORE INCOME TAXES	486.6	361.8	833.4	709.2
Income tax expense	20	8.8	34.7	32
Equity in earnings of equity method investees, net of income taxes	2	1.6	5.8	5.3
NET INCOME	468.6	354.6	804.5	682.5
Less: Net income attributable to noncontrolling interests	3	3	9.2	9.2
Net income attributable to Evergy, Inc.	$ 465.6	$ 351.6	$ 795.3	$ 673.3
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)	$ 2.02	$ 1.53	$ 3.45	$ 2.93
Diluted earnings per common share (in dollars per share)	$ 2.02	$ 1.53	$ 3.45	$ 2.92
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Basic (in shares)	230.3	230.1	230.3	230
Diluted (in shares)	230.6	230.5	230.5	230.5
COMPREHENSIVE INCOME
NET INCOME	$ 468.6	$ 354.6	$ 804.5	$ 682.5
Derivative hedging activity
Reclassification to expenses, net of tax	1.4	1.5	4.1	4.1
Derivative hedging activity, net of tax	1.4	1.5	4.1	4.1
Defined benefit pension plans
Amortization of net gains included in net periodic benefit costs, net of tax	(0.1)	(0.1)	(0.1)	(0.1)
Change in unrecognized pension expense, net of tax	(0.1)	(0.1)	(0.1)	(0.1)
Total other comprehensive income	1.3	1.4	4	4
COMPREHENSIVE INCOME	469.9	356	808.5	686.5
Less:  Comprehensive income attributable to noncontrolling interest	3	3	9.2	9.2
Comprehensive Income, Net of Tax, Attributable to Parent, Total	$ 466.9	$ 353	$ 799.3	$ 677.3

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	$ 804.5	$ 682.5
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	838.5	806.1
Amortization of nuclear fuel	40.1	46.8
Amortization of deferred refueling outage	13.3	13.7
Amortization of corporate-owned life insurance	18.7	19.4
Stock compensation	11.5	14
Net deferred income taxes and credits	24.2	18.6
Allowance for equity funds used during construction	(13.4)	(6.6)
Payments for asset retirement obligations	(8.9)	(9.4)
Equity in earnings of equity method investees, net of income taxes	(5.8)	(5.3)
Income from corporate-owned life insurance	(18)	(26.2)
Other	(0.4)	1
Changes in working capital items:
Accounts receivable	(94.3)	(7.2)
Accounts receivable pledged as collateral	(83)	(36)
Fuel inventory and supplies	(40.8)	(66.3)
Prepaid expenses and other current assets	146.1	105.9
Accounts payable	(124)	(194.2)
Accrued taxes	174.3	171.3
Other current liabilities	(69.7)	(68.2)
Changes in other assets	(0.2)	16.5
Changes in other liabilities	(24.6)	75.3
Cash Flows from Operating Activities	1,588.1	1,551.7
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(1,822.4)	(1,657.9)
Acquisition of Persimmon Creek, net of cash acquired	0	(217.9)
Purchase of securities - trusts	(78.7)	(30.7)
Sale of securities - trusts	74.6	22.8
Investment in corporate-owned life insurance	(15)	(15.4)
Proceeds from investment in corporate-owned life insurance	54	118.2
Other investing activities	(2.8)	(11)
Cash Flows used in Investing Activities	(1,790.3)	(1,791.9)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	471	344.7
Collateralized short-term borrowings, net	83	36
Proceeds from long-term debt	919.6	690.3
Retirements of long-term debt	(800)	(350)
Borrowings against cash surrender value of corporate-owned life insurance	50.1	52.1
Repayment of borrowings against cash surrender value of corporate-owned life insurance	(36.6)	(89.8)
Cash dividends paid	(443.2)	(422)
Other financing activities	(12.7)	(5.3)
Cash Flows from Financing Activities	231.2	256
NET CHANGE IN CASH AND CASH EQUIVALENTS	29	15.8
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	27.7	25.2
End of period	$ 56.7	$ 41

Consolidated Statements of Chan

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, 2022		229,546,105
Beginning balance at Dec. 31, 2022	$ 9,493.3	$ 7,219.7	$ 2,298.5	$ (34.5)	$ 9.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	145.7		142.6		3.1
Issuance of stock compensation and reinvested dividends, net of tax withholding (in shares)		130,594
Issuance of stock, net issuance costs	(2.4)	$ (2.4)
Dividends declared on common stock	(140.7)		(140.7)
Dividend equivalents declared	(0.4)		(0.4)
Stock compensation expense	4.7	4.7
Unearned compensation
Compensation expense recognized	0.1	0.1
Derivative hedging activity, net of tax	1.3			1.3
Other	0.1	$ 0.1
Ending balance (in shares) at Mar. 31, 2023		229,676,699
Ending balance at Mar. 31, 2023	9,501.7	$ 7,222.2	2,300	(33.2)	12.7
Beginning balance (in shares) at Dec. 31, 2022		229,546,105
Beginning balance at Dec. 31, 2022	9,493.3	$ 7,219.7	2,298.5	(34.5)	9.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	682.5
Unearned compensation
Derivative hedging activity, net of tax	4.1
Change in unrecognized pension expense, net of tax	(0.1)
Ending balance (in shares) at Sep. 30, 2023		229,716,510
Ending balance at Sep. 30, 2023	9,767.8	$ 7,231.5	2,548	(30.5)	18.8
Beginning balance (in shares) at Mar. 31, 2023		229,676,699
Beginning balance at Mar. 31, 2023	9,501.7	$ 7,222.2	2,300	(33.2)	12.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	182.2		179.1		3.1
Issuance of stock compensation and reinvested dividends, net of tax withholding (in shares)		25,010
Issuance of stock, net issuance costs	0	$ 0
Dividends declared on common stock	(140.7)		(140.7)
Dividend equivalents declared	(0.6)		(0.6)
Stock compensation expense	6.6	6.6
Unearned compensation
Compensation expense recognized	0.1	0.1
Derivative hedging activity, net of tax	1.3			1.3
Other	0.1	$ 0.1
Ending balance (in shares) at Jun. 30, 2023		229,701,709
Ending balance at Jun. 30, 2023	9,550.7	$ 7,229	2,337.8	(31.9)	15.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	354.6		351.6		3
Issuance of stock compensation and reinvested dividends, net of tax withholding (in shares)		14,801
Issuance of stock, net issuance costs	(0.1)	$ (0.1)
Dividends declared on common stock	(140.6)		(140.6)
Dividend equivalents declared	(0.8)		(0.8)
Stock compensation expense	2.5	2.5
Unearned compensation
Derivative hedging activity, net of tax	1.5			1.5
Change in unrecognized pension expense, net of tax	(0.1)			(0.1)
Other	0.1	$ 0.1
Ending balance (in shares) at Sep. 30, 2023		229,716,510
Ending balance at Sep. 30, 2023	9,767.8	$ 7,231.5	2,548	(30.5)	18.8
Beginning balance (in shares) at Dec. 31, 2023		229,729,296
Beginning balance at Dec. 31, 2023	9,685	$ 7,234.9	2,457.8	(29.6)	21.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	125.8		122.7		3.1
Issuance of stock compensation and reinvested dividends, net of tax withholding (in shares)		193,042
Issuance of stock, net issuance costs	(4)	$ (4)
Dividends declared on common stock	(147.7)		(147.7)
Dividend equivalents declared	(0.4)		(0.4)
Stock compensation expense	3.9	3.9
Unearned compensation
Derivative hedging activity, net of tax	1.3			1.3
Other	0.2	$ 0.2
Ending balance (in shares) at Mar. 31, 2024		229,922,338
Ending balance at Mar. 31, 2024	9,664.1	$ 7,235	2,432.4	(28.3)	25
Beginning balance (in shares) at Dec. 31, 2023		229,729,296
Beginning balance at Dec. 31, 2023	9,685	$ 7,234.9	2,457.8	(29.6)	21.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	804.5
Unearned compensation
Derivative hedging activity, net of tax	4.1
Change in unrecognized pension expense, net of tax	(0.1)
Ending balance (in shares) at Sep. 30, 2024		229,972,832
Ending balance at Sep. 30, 2024	10,056.2	$ 7,242.4	2,808.3	(25.6)	31.1
Beginning balance (in shares) at Mar. 31, 2024		229,922,338
Beginning balance at Mar. 31, 2024	9,664.1	$ 7,235	2,432.4	(28.3)	25
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	210.1		207		3.1
Issuance of stock compensation and reinvested dividends, net of tax withholding (in shares)		32,186
Issuance of stock, net issuance costs	(0.1)	$ (0.1)
Dividends declared on common stock	(147.7)		(147.7)
Dividend equivalents declared	(0.4)		(0.4)
Stock compensation expense	4.2	4.2
Unearned compensation
Derivative hedging activity, net of tax	1.4			1.4
Other	0.1	$ 0.1
Ending balance (in shares) at Jun. 30, 2024		229,954,524
Ending balance at Jun. 30, 2024	9,731.7	$ 7,239.2	2,491.3	(26.9)	28.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	468.6		465.6		3
Issuance of stock compensation and reinvested dividends, net of tax withholding (in shares)		18,308
Issuance of stock, net issuance costs	(0.4)	$ (0.4)
Dividends declared on common stock	(147.8)		(147.8)
Dividend equivalents declared	(0.8)		(0.8)
Stock compensation expense	3.4	3.4
Unearned compensation
Derivative hedging activity, net of tax	1.4			1.4
Change in unrecognized pension expense, net of tax	(0.1)			(0.1)
Other	0.2	$ 0.2
Ending balance (in shares) at Sep. 30, 2024		229,972,832
Ending balance at Sep. 30, 2024	$ 10,056.2	$ 7,242.4	$ 2,808.3	$ (25.6)	$ 31.1

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Equity (Parenthetical) - $ / shares	3 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023
Statement of Stockholders' Equity [Abstract]
Dividends declared on common stock (in dollars per share)	$ 0.6425	$ 0.6425	$ 0.6425	$ 0.6125	$ 0.6125	$ 0.6125

Consolidated Balance Sheets - E

Consolidated Balance Sheets - Evergy Kansas Central, Inc - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
CURRENT ASSETS:
Cash and cash equivalents	$ 34.6	$ 27.7
Receivables, net of allowance for credit losses of $6.2 and $11.6, respectively	386.8	256.9
Accounts receivable pledged as collateral	425	342
Fuel inventory and supplies	818.9	776.2
Income taxes receivable	19.1	11.5
Regulatory assets	182.2	292.1
Prepaid expenses	63.2	51.3
Other	60.4	31.4
Total Current Assets	1,990.2	1,789.1
PROPERTY, PLANT AND EQUIPMENT, NET, includes $128.3 and $133.6 related to variable interest entity, respectively	24,613.4	23,728.7
OTHER ASSETS:
Regulatory assets	1,769.8	1,795.3
Nuclear decommissioning trust	877.4	766.4
Other	558.7	560
Total Other Assets	5,542.5	5,458.3
TOTAL ASSETS	32,146.1	30,976.1
CURRENT LIABILITIES:
Current maturities of long-term debt	404.8	800
Commercial paper	1,422.8	951.8
Collateralized note payable	425	342
Accounts payable	366.3	616.9
Accrued taxes	338.6	156.7
Accrued interest, includes $10.2 and $— related to variable interest entity, respectively	169.8	134.2
Regulatory liabilities	149.4	183
Asset retirement obligations	46.4	40.3
Accrued compensation and benefits	73.9	74.5
Other	210.1	213.2
Total Current Liabilities	3,607.1	3,512.6
LONG-TERM LIABILITIES:
Long-term debt, net	11,571.1	11,053.3
Deferred income taxes	2,214.2	2,097.9
Unamortized investment tax credits	164.6	170
Regulatory liabilities	2,478	2,542.5
Pension and post-retirement liability	498.1	464.1
Asset retirement obligations	1,263.9	1,162.8
Other	292.9	287.9
Total Long-Term Liabilities	18,482.8	17,778.5
Commitments and Contingencies (Note $12)
Evergy, Inc. Shareholders' Equity:
Common stock	7,242.4	7,234.9
Retained earnings	2,808.3	2,457.8
Total Evergy, Inc. Shareholders' Equity	10,025.1	9,663.1
Noncontrolling Interests	31.1	21.9
Total Equity	10,056.2	9,685
TOTAL LIABILITIES AND EQUITY	32,146.1	30,976.1
Evergy Kansas Central
CURRENT ASSETS:
Cash and cash equivalents	12	9.2
Receivables, net of allowance for credit losses of $6.2 and $11.6, respectively	214.7	171.8
Accounts receivable pledged as collateral	215	166
Fuel inventory and supplies	449.5	411.9
Income taxes receivable	32.1	11.5
Regulatory assets	81.3	127.7
Prepaid expenses	29.8	22.9
Other	10.9	13.2
Total Current Assets	1,056.9	945.8
PROPERTY, PLANT AND EQUIPMENT, NET, includes $128.3 and $133.6 related to variable interest entity, respectively	12,654.8	12,121.9
OTHER ASSETS:
Regulatory assets	493.9	505.2
Nuclear decommissioning trust	410.7	365.1
Other	275.6	288.6
Total Other Assets	1,180.2	1,158.9
TOTAL ASSETS	14,891.9	14,226.6
CURRENT LIABILITIES:
Commercial paper	691.7	230.4
Collateralized note payable	215	166
Accounts payable	184.5	244.7
Accrued taxes	167.8	111.1
Accrued interest, includes $10.2 and $— related to variable interest entity, respectively	71	79.7
Regulatory liabilities	76.5	104.1
Asset retirement obligations	27.5	22.2
Accrued compensation and benefits	39.6	37.6
Other	136.5	142.4
Total Current Liabilities	1,641.8	1,432.6
LONG-TERM LIABILITIES:
Long-term debt, net	4,582.7	4,580.4
Deferred income taxes	906.1	844.2
Unamortized investment tax credits	53.3	56.2
Regulatory liabilities	1,397.6	1,432.4
Pension and post-retirement liability	270.7	256.3
Asset retirement obligations	636.1	577.1
Other	157.4	155.5
Total Long-Term Liabilities	8,003.9	7,902.1
Commitments and Contingencies (Note $12)
Evergy, Inc. Shareholders' Equity:
Common stock	2,737.6	2,737.6
Retained earnings	2,477.5	2,132.4
Total Evergy, Inc. Shareholders' Equity	5,215.1	4,870
Noncontrolling Interests	31.1	21.9
Total Equity	5,246.2	4,891.9
TOTAL LIABILITIES AND EQUITY	14,891.9	14,226.6
Related Party [Member] | Evergy Kansas Central
CURRENT ASSETS:
Related party receivables	11.6	11.6
CURRENT LIABILITIES:
Accounts payable	31.7	294.4
Variable Interest Entities
CURRENT ASSETS:
Regulatory assets	15.6	0
PROPERTY, PLANT AND EQUIPMENT, NET, includes $128.3 and $133.6 related to variable interest entity, respectively	128.3	133.6
OTHER ASSETS:
Regulatory assets	298.6	0
CURRENT LIABILITIES:
Current maturities of long-term debt	19.5	0
Accrued interest, includes $10.2 and $— related to variable interest entity, respectively	10.2	0
LONG-TERM LIABILITIES:
Long-term debt, net	303.8	0
Variable Interest Entities | Evergy Kansas Central
CURRENT ASSETS:
PROPERTY, PLANT AND EQUIPMENT, NET, includes $128.3 and $133.6 related to variable interest entity, respectively	$ 128.3	$ 133.6

Consolidated Balance Sheets -_2

Consolidated Balance Sheets - Evergy Kansas Central, Inc (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Allowance for credit losses	$ 13.9	$ 24.2
Property, plant and equipment, net	$ 24,613.4	$ 23,728.7
Common stock - shares authorized (in shares)	600,000,000	600,000,000
Common stock - shares issued (in shares)	229,972,832	229,729,296
Evergy Kansas Central
Allowance for credit losses	$ 6.2	$ 11.6
Property, plant and equipment, net	$ 12,654.8	$ 12,121.9
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 Inco

Consolidated Statements of Income - Evergy Kansas Central, Inc - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
OPERATING REVENUES	$ 1,811.4	$ 1,669.3	$ 4,589.9	$ 4,320.3
OPERATING EXPENSES:
Fuel and purchased power	433.7	478.4	1,169.1	1,177.4
SPP network transmission costs	99.7	75.4	272.4	232
Operating and maintenance	251.6	253.2	720.8	697.1
Depreciation and amortization	282.3	273.3	838.5	806.1
Taxes other than income tax	116.6	103.1	343.3	305.9
Total Operating Expenses	1,183.9	1,183.4	3,344.1	3,218.5
INCOME FROM OPERATIONS	627.5	485.9	1,245.8	1,101.8
OTHER INCOME (EXPENSE):
Investment earnings (loss)	(0.1)	6.2	7.8	22
Other income	12.9	19.3	31.2	34.1
Other expense	(9.8)	(12.8)	(30.7)	(55.1)
Total Other Expense, Net	3	12.7	8.3	1
Interest expense	143.9	136.8	420.7	393.6
INCOME BEFORE INCOME TAXES	486.6	361.8	833.4	709.2
Income tax expense	20	8.8	34.7	32
Equity in earnings of equity method investees, net of income taxes	2	1.6	5.8	5.3
NET INCOME	468.6	354.6	804.5	682.5
Less: Net income attributable to noncontrolling interests	3	3	9.2	9.2
Net income attributable to Evergy, Inc.	465.6	351.6	795.3	673.3
Evergy Kansas Central
OPERATING REVENUES	917.5	773.3	2,338	2,091.5
OPERATING EXPENSES:
Fuel and purchased power	183.1	212.3	445.7	470.5
SPP network transmission costs	99.7	75.4	272.4	232
Operating and maintenance	122.3	123.9	355.9	347.1
Depreciation and amortization	142.6	133.2	422.3	386
Taxes other than income tax	64.5	54.9	190.4	165.1
Total Operating Expenses	612.2	599.7	1,686.7	1,600.7
INCOME FROM OPERATIONS	305.3	173.6	651.3	490.8
OTHER INCOME (EXPENSE):
Investment earnings (loss)	1.7	(0.4)	3	1.3
Other income	9.8	18.3	25.5	28.6
Other expense	(5.2)	(10.2)	(14.7)	(28.8)
Total Other Expense, Net	6.3	7.7	13.8	1.1
Interest expense	59.2	56.5	173.2	163.3
INCOME BEFORE INCOME TAXES	252.4	124.8	491.9	328.6
Income tax expense	8	(7.9)	13	3.6
Equity in earnings of equity method investees, net of income taxes	0.8	0.6	2.4	2.6
NET INCOME	245.2	133.3	481.3	327.6
Less: Net income attributable to noncontrolling interests	3	3	9.2	9.2
Net income attributable to Evergy, Inc.	$ 242.2	$ 130.3	$ 472.1	$ 318.4

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows - Evergy Kansas Central, Inc - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	$ 804.5	$ 682.5
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	838.5	806.1
Amortization of nuclear fuel	40.1	46.8
Amortization of deferred refueling outage	13.3	13.7
Amortization of corporate-owned life insurance	18.7	19.4
Stock compensation	11.5	14
Net deferred income taxes and credits	24.2	18.6
Allowance for equity funds used during construction	(13.4)	(6.6)
Payments for asset retirement obligations	(8.9)	(9.4)
Equity in earnings of equity method investees, net of income taxes	(5.8)	(5.3)
Income from corporate-owned life insurance	(18)	(26.2)
Other	(0.4)	1
Changes in working capital items:
Accounts receivable	(94.3)	(7.2)
Accounts receivable pledged as collateral	(83)	(36)
Fuel inventory and supplies	(40.8)	(66.3)
Prepaid expenses and other current assets	146.1	105.9
Accounts payable	(124)	(194.2)
Accrued taxes	174.3	171.3
Other current liabilities	(69.7)	(68.2)
Changes in other assets	(0.2)	16.5
Changes in other liabilities	(24.6)	75.3
Cash Flows from Operating Activities	1,588.1	1,551.7
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(1,822.4)	(1,657.9)
Acquisition of Persimmon Creek, net of cash acquired	0	(217.9)
Purchase of securities - trusts	(78.7)	(30.7)
Sale of securities - trusts	74.6	22.8
Investment in corporate-owned life insurance	(15)	(15.4)
Proceeds from investment in corporate-owned life insurance	54	118.2
Other investing activities	(2.8)	(11)
Cash Flows used in Investing Activities	(1,790.3)	(1,791.9)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	471	344.7
Collateralized short-term debt, net	83	36
Proceeds from long-term debt	919.6	690.3
Retirements of long-term debt	(800)	(350)
Borrowings against cash surrender value of corporate-owned life insurance	50.1	52.1
Repayment of borrowings against cash surrender value of corporate-owned life insurance	(36.6)	(89.8)
Cash dividends paid	(443.2)	(422)
Other financing activities	(12.7)	(5.3)
Cash Flows from Financing Activities	231.2	256
NET CHANGE IN CASH AND CASH EQUIVALENTS	29	15.8
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	27.7	25.2
End of period	56.7	41
Evergy Kansas Central
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	481.3	327.6
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	422.3	386
Amortization of nuclear fuel	19.9	23.2
Amortization of deferred refueling outage	6.6	6.8
Amortization of corporate-owned life insurance	18.7	19.4
Net deferred income taxes and credits	25.3	(18.8)
Allowance for equity funds used during construction	(9.7)	(2.5)
Payments for asset retirement obligations	(5.6)	(6.3)
Equity in earnings of equity method investees, net of income taxes	(2.4)	(2.6)
Income from corporate-owned life insurance	(18)	(26.2)
Other	(4.1)	(4.1)
Changes in working capital items:
Accounts receivable	(17.6)	49.6
Accounts receivable pledged as collateral	(49)	(15)
Fuel inventory and supplies	(37.3)	(45.7)
Prepaid expenses and other current assets	67.8	41.6
Accounts payable	(8.3)	(52.2)
Accrued taxes	36.1	25.5
Other current liabilities	(102.5)	(30.6)
Changes in other assets	(10.6)	3.7
Changes in other liabilities	(11.3)	100.9
Cash Flows from Operating Activities	801.6	780.3
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(962.1)	(855.8)
Acquisition of Persimmon Creek, net of cash acquired	0	(217.9)
Purchase of securities - trusts	(11.6)	(9.9)
Sale of securities - trusts	8.2	5.7
Investment in corporate-owned life insurance	(15)	(15.5)
Proceeds from investment in corporate-owned life insurance	51.3	117
Other investing activities	0.6	1.9
Cash Flows used in Investing Activities	(928.6)	(974.5)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	461.3	(112.6)
Collateralized short-term debt, net	49	15
Proceeds from long-term debt	0	393.3
Retirements of long-term debt	0	(50)
Net money pool borrowings	(261.4)	0
Borrowings against cash surrender value of corporate-owned life insurance	47	49
Repayment of borrowings against cash surrender value of corporate-owned life insurance	(34)	(88.6)
Cash dividends paid	(127)	0
Other financing activities	(5.1)	(1.6)
Cash Flows from Financing Activities	129.8	204.5
NET CHANGE IN CASH AND CASH EQUIVALENTS	2.8	10.3
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	9.2	8.7
End of period	$ 12	$ 19

Consolidated Statements of Ch_3

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, 2022		229,546,105				1
Beginning balance at Dec. 31, 2022	$ 9,493.3	$ 7,219.7	$ 2,298.5	$ 9.6	$ 4,507.4	$ 2,737.6	$ 1,760.2	$ 9.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	145.7		142.6	3.1	106.4		103.3	3.1
Dividends declared on common stock	(140.7)		(140.7)
Ending balance (in shares) at Mar. 31, 2023		229,676,699				1
Ending balance at Mar. 31, 2023	9,501.7	$ 7,222.2	2,300	12.7	4,613.8	$ 2,737.6	1,863.5	12.7
Beginning balance (in shares) at Dec. 31, 2022		229,546,105				1
Beginning balance at Dec. 31, 2022	9,493.3	$ 7,219.7	2,298.5	9.6	4,507.4	$ 2,737.6	1,760.2	9.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	682.5				327.6
Ending balance (in shares) at Sep. 30, 2023		229,716,510				1
Ending balance at Sep. 30, 2023	9,767.8	$ 7,231.5	2,548	18.8	4,835	$ 2,737.6	2,078.6	18.8
Beginning balance (in shares) at Mar. 31, 2023		229,676,699				1
Beginning balance at Mar. 31, 2023	9,501.7	$ 7,222.2	2,300	12.7	4,613.8	$ 2,737.6	1,863.5	12.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	182.2		179.1	3.1	87.9		84.8	3.1
Dividends declared on common stock	(140.7)		(140.7)
Ending balance (in shares) at Jun. 30, 2023		229,701,709				1
Ending balance at Jun. 30, 2023	9,550.7	$ 7,229	2,337.8	15.8	4,701.7	$ 2,737.6	1,948.3	15.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	354.6		351.6	3	133.3		130.3	3
Dividends declared on common stock	(140.6)		(140.6)
Ending balance (in shares) at Sep. 30, 2023		229,716,510				1
Ending balance at Sep. 30, 2023	9,767.8	$ 7,231.5	2,548	18.8	4,835	$ 2,737.6	2,078.6	18.8
Beginning balance (in shares) at Dec. 31, 2023		229,729,296				1
Beginning balance at Dec. 31, 2023	9,685	$ 7,234.9	2,457.8	21.9	4,891.9	$ 2,737.6	2,132.4	21.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	125.8		122.7	3.1	111.6		108.5	3.1
Dividends declared on common stock	(147.7)		(147.7)
Ending balance (in shares) at Mar. 31, 2024		229,922,338				1
Ending balance at Mar. 31, 2024	9,664.1	$ 7,235	2,432.4	25	5,003.5	$ 2,737.6	2,240.9	25
Beginning balance (in shares) at Dec. 31, 2023		229,729,296				1
Beginning balance at Dec. 31, 2023	9,685	$ 7,234.9	2,457.8	21.9	4,891.9	$ 2,737.6	2,132.4	21.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	804.5				481.3
Ending balance (in shares) at Sep. 30, 2024		229,972,832				1
Ending balance at Sep. 30, 2024	10,056.2	$ 7,242.4	2,808.3	31.1	5,246.2	$ 2,737.6	2,477.5	31.1
Beginning balance (in shares) at Mar. 31, 2024		229,922,338				1
Beginning balance at Mar. 31, 2024	9,664.1	$ 7,235	2,432.4	25	5,003.5	$ 2,737.6	2,240.9	25
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	210.1		207	3.1	124.5		121.4	3.1
Dividends declared on common stock	(147.7)		(147.7)
Ending balance (in shares) at Jun. 30, 2024		229,954,524				1
Ending balance at Jun. 30, 2024	9,731.7	$ 7,239.2	2,491.3	28.1	5,128	$ 2,737.6	2,362.3	28.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	468.6		465.6	3	245.2		242.2	3
Dividends declared on common stock	(147.8)		(147.8)		(127)		(127)
Ending balance (in shares) at Sep. 30, 2024		229,972,832				1
Ending balance at Sep. 30, 2024	$ 10,056.2	$ 7,242.4	$ 2,808.3	$ 31.1	$ 5,246.2	$ 2,737.6	$ 2,477.5	$ 31.1

Consolidated Balance Sheets -_3

Consolidated Balance Sheets - Evergy Metro, Inc - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
CURRENT ASSETS:
Cash and cash equivalents	$ 34.6	$ 27.7
Receivables, net of allowance for credit losses of $5.1 and $7.9, respectively	386.8	256.9
Accounts receivable pledged as collateral	425	342
Fuel inventory and supplies	818.9	776.2
Income taxes receivable	19.1	11.5
Regulatory assets	182.2	292.1
Other	60.4	31.4
Total Current Assets	1,990.2	1,789.1
Property, plant and equipment, net	24,613.4	23,728.7
OTHER ASSETS:
Regulatory assets	1,769.8	1,795.3
Nuclear decommissioning trust	877.4	766.4
Other	558.7	560
Total Other Assets	5,542.5	5,458.3
TOTAL ASSETS	32,146.1	30,976.1
CURRENT LIABILITIES:
Current maturities of long-term debt	404.8	800
Commercial paper	1,422.8	951.8
Collateralized note payable	425	342
Accounts payable	366.3	616.9
Accrued taxes	338.6	156.7
Accrued interest, includes $10.2 and $— related to variable interest entity, respectively	169.8	134.2
Regulatory liabilities	149.4	183
Asset retirement obligations	46.4	40.3
Accrued compensation and benefits	73.9	74.5
Other	210.1	213.2
Total Current Liabilities	3,607.1	3,512.6
LONG-TERM LIABILITIES:
Long-term debt, net	11,571.1	11,053.3
Deferred income taxes	2,214.2	2,097.9
Unamortized investment tax credits	164.6	170
Regulatory liabilities	2,478	2,542.5
Pension and post-retirement liability	498.1	464.1
Asset retirement obligations	1,263.9	1,162.8
Other	292.9	287.9
Total Long-Term Liabilities	18,482.8	17,778.5
Commitments and Contingencies (Note $12)
EQUITY:
Common stock	7,242.4	7,234.9
Retained earnings	2,808.3	2,457.8
Accumulated other comprehensive loss	(25.6)	(29.6)
Total Evergy, Inc. Shareholders' Equity	10,025.1	9,663.1
TOTAL LIABILITIES AND EQUITY	32,146.1	30,976.1
Evergy Metro
CURRENT ASSETS:
Cash and cash equivalents	7.1	3.3
Receivables, net of allowance for credit losses of $5.1 and $7.9, respectively	116.7	55
Accounts receivable pledged as collateral	160	126
Fuel inventory and supplies	263.2	264.6
Regulatory assets	49.4	53.2
Prepaid expenses	23.5	20.9
Other	23.7	14.7
Total Current Assets	759.8	666.2
Property, plant and equipment, net	8,243.2	8,131.2
OTHER ASSETS:
Regulatory assets	415.9	380.8
Nuclear decommissioning trust	466.7	401.3
Other	78.3	77
Total Other Assets	960.9	859.1
TOTAL ASSETS	9,963.9	9,656.5
CURRENT LIABILITIES:
Current maturities of long-term debt	350	0
Commercial paper	71.9	423.3
Collateralized note payable	160	126
Accounts payable	160.8	272.5
Accrued taxes	143.8	45.7
Accrued interest, includes $10.2 and $— related to variable interest entity, respectively	50.5	27.4
Regulatory liabilities	35.8	43
Asset retirement obligations	16.4	16
Accrued compensation and benefits	34.3	36.9
Other	59.8	58.3
Total Current Liabilities	1,083.3	1,050.2
LONG-TERM LIABILITIES:
Long-term debt, net	2,872.8	2,924.4
Deferred income taxes	838.3	797.2
Unamortized investment tax credits	108.9	111.3
Regulatory liabilities	876.7	860.2
Pension and post-retirement liability	209.7	190.8
Asset retirement obligations	481	444.4
Other	85.1	85
Total Long-Term Liabilities	5,472.5	5,413.3
Commitments and Contingencies (Note $12)
EQUITY:
Common stock	1,563.1	1,563.1
Retained earnings	1,841.5	1,626.2
Accumulated other comprehensive loss	3.5	3.7
Total Evergy, Inc. Shareholders' Equity	3,408.1	3,193
TOTAL LIABILITIES AND EQUITY	9,963.9	9,656.5
Related Party [Member] | Evergy Metro
CURRENT ASSETS:
Related party receivables	116.2	128.5
CURRENT LIABILITIES:
Accounts payable	$ 0	$ 1.1

Consolidated Balance Sheets -_4

Consolidated Balance Sheets - Evergy Metro, Inc (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Allowance for credit losses	$ 13.9	$ 24.2
Common stock - shares authorized (in shares)	600,000,000	600,000,000
Common stock - shares issued (in shares)	229,972,832	229,729,296
Evergy Metro
Allowance for credit losses	$ 5.1	$ 7.9
Common stock - shares authorized (in shares)	1,000	1,000
Common stock - shares issued (in shares)	1	1

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income - Evergy Metro, Inc - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
OPERATING REVENUES	$ 1,811.4	$ 1,669.3	$ 4,589.9	$ 4,320.3
OPERATING EXPENSES:
Fuel and purchased power	433.7	478.4	1,169.1	1,177.4
Operating and maintenance	251.6	253.2	720.8	697.1
Depreciation and amortization	282.3	273.3	838.5	806.1
Taxes other than income tax	116.6	103.1	343.3	305.9
Total Operating Expenses	1,183.9	1,183.4	3,344.1	3,218.5
INCOME FROM OPERATIONS	627.5	485.9	1,245.8	1,101.8
OTHER INCOME (EXPENSE):
Investment earnings (loss)	(0.1)	6.2	7.8	22
Other income	12.9	19.3	31.2	34.1
Other expense	(9.8)	(12.8)	(30.7)	(55.1)
Total Other Expense, Net	3	12.7	8.3	1
Interest expense	143.9	136.8	420.7	393.6
INCOME BEFORE INCOME TAXES	486.6	361.8	833.4	709.2
Income tax expense	20	8.8	34.7	32
Net income attributable to Evergy, Inc.	465.6	351.6	795.3	673.3
Derivative hedging activity
Reclassification to expenses, net of tax	1.4	1.5	4.1	4.1
Derivative hedging activity, net of tax	1.4	1.5	4.1	4.1
Total other comprehensive income	1.3	1.4	4	4
Comprehensive Income, Net of Tax, Attributable to Parent, Total	466.9	353	799.3	677.3
Evergy Metro
OPERATING REVENUES	608.3	608.2	1,503.2	1,499.9
OPERATING EXPENSES:
Fuel and purchased power	149.1	160.4	431.2	417.8
Operating and maintenance	74.8	81.5	210.3	213.6
Depreciation and amortization	100.8	104.1	303.2	311.9
Taxes other than income tax	38.4	34.7	111.9	100.4
Total Operating Expenses	363.1	380.7	1,056.6	1,043.7
INCOME FROM OPERATIONS	245.2	227.5	446.6	456.2
OTHER INCOME (EXPENSE):
Investment earnings (loss)	1.1	0.9	3.9	2.6
Other income	2.9	0.9	5.3	5.1
Other expense	(2.8)	(0.5)	(10)	(19.3)
Total Other Expense, Net	1.2	1.3	(0.8)	(11.6)
Interest expense	36	35	112	100.6
INCOME BEFORE INCOME TAXES	210.4	193.8	333.8	344
Income tax expense	26.4	23.7	42.5	42.3
Net income attributable to Evergy, Inc.	184	170.1	291.3	301.7
Derivative hedging activity
Reclassification to expenses, net of tax	0	(0.1)	(0.2)	(0.2)
Derivative hedging activity, net of tax	0	(0.1)	(0.2)	(0.2)
Total other comprehensive income	0	(0.1)	(0.2)	(0.2)
Comprehensive Income, Net of Tax, Attributable to Parent, Total	$ 184	$ 170	$ 291.1	$ 301.5

Consolidated Statements of Ca_3

Consolidated Statements of Cash Flows - Evergy Metro, Inc - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	$ 804.5	$ 682.5
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	838.5	806.1
Amortization of nuclear fuel	40.1	46.8
Amortization of deferred refueling outage	13.3	13.7
Net deferred income taxes and credits	24.2	18.6
Allowance for equity funds used during construction	(13.4)	(6.6)
Payments for asset retirement obligations	(8.9)	(9.4)
Other	(0.4)	1
Changes in working capital items:
Accounts receivable	(94.3)	(7.2)
Accounts receivable pledged as collateral	(83)	(36)
Fuel inventory and supplies	(40.8)	(66.3)
Prepaid expenses and other current assets	146.1	105.9
Accounts payable	(124)	(194.2)
Accrued taxes	174.3	171.3
Other current liabilities	(69.7)	(68.2)
Changes in other assets	(0.2)	16.5
Changes in other liabilities	(24.6)	75.3
Cash Flows from Operating Activities	1,588.1	1,551.7
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(1,822.4)	(1,657.9)
Purchase of securities - trusts	(78.7)	(30.7)
Sale of securities - trusts	74.6	22.8
Other investing activities	(2.8)	(11)
Cash Flows used in Investing Activities	(1,790.3)	(1,791.9)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	471	344.7
Collateralized short-term debt, net	83	36
Proceeds from long-term debt	919.6	690.3
Retirements of long-term debt	(800)	(350)
Cash dividends paid	(443.2)	(422)
Other financing activities	(12.7)	(5.3)
Cash Flows from Financing Activities	231.2	256
NET CHANGE IN CASH AND CASH EQUIVALENTS	29	15.8
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	27.7	25.2
End of period	56.7	41
Evergy Metro
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	291.3	301.7
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	303.2	311.9
Amortization of nuclear fuel	20.2	23.6
Amortization of deferred refueling outage	6.6	6.8
Net deferred income taxes and credits	6.2	35.1
Allowance for equity funds used during construction	(3.7)	(4.1)
Payments for asset retirement obligations	(3)	(2.1)
Other	(0.3)	(0.3)
Changes in working capital items:
Accounts receivable	(36.4)	(28.1)
Accounts receivable pledged as collateral	(34)	(6)
Fuel inventory and supplies	1.4	(5.8)
Prepaid expenses and other current assets	(4.3)	0.5
Accounts payable	(66.1)	(84)
Accrued taxes	98.1	86.8
Other current liabilities	10.8	(27.5)
Changes in other assets	(11.7)	13.3
Changes in other liabilities	11.9	(4.9)
Cash Flows from Operating Activities	590.2	616.9
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(488)	(542.1)
Purchase of securities - trusts	(67.1)	(20.8)
Sale of securities - trusts	66.4	17.1
Net money pool lending	0	31
Other investing activities	0.2	1.8
Cash Flows used in Investing Activities	(488.5)	(513)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	(351.4)	220.8
Collateralized short-term debt, net	34	6
Proceeds from long-term debt	296.8	297
Retirements of long-term debt	0	(300)
Cash dividends paid	(76)	(325)
Other financing activities	(1.3)	1.3
Cash Flows from Financing Activities	(97.9)	(99.9)
NET CHANGE IN CASH AND CASH EQUIVALENTS	3.8	4
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	3.3	3.1
End of period	$ 7.1	$ 7.1

Consolidated Statements of Ch_4

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, 2022		229,546,105			1
Beginning balance at Dec. 31, 2022	$ 9,493.3	$ 7,219.7	$ 2,298.5	$ 3,186.3	$ 1,563.1	$ 1,619.2	$ 4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	145.7		142.6	46.8		46.8
Dividends declared on common stock	(140.7)		(140.7)
Derivative hedging activity, net of tax	1.3			(0.1)			(0.1)
Ending balance (in shares) at Mar. 31, 2023		229,676,699			1
Ending balance at Mar. 31, 2023	9,501.7	$ 7,222.2	2,300	3,233	$ 1,563.1	1,666	3.9
Beginning balance (in shares) at Dec. 31, 2022		229,546,105			1
Beginning balance at Dec. 31, 2022	9,493.3	$ 7,219.7	2,298.5	3,186.3	$ 1,563.1	1,619.2	4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	682.5			301.7
Derivative hedging activity, net of tax	4.1			(0.2)
Ending balance (in shares) at Sep. 30, 2023		229,716,510			1
Ending balance at Sep. 30, 2023	9,767.8	$ 7,231.5	2,548	3,162.8	$ 1,563.1	1,595.9	3.8
Beginning balance (in shares) at Mar. 31, 2023		229,676,699			1
Beginning balance at Mar. 31, 2023	9,501.7	$ 7,222.2	2,300	3,233	$ 1,563.1	1,666	3.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	182.2		179.1	84.8		84.8
Dividends declared on common stock	(140.7)		(140.7)	(150)		(150)
Derivative hedging activity, net of tax	1.3
Ending balance (in shares) at Jun. 30, 2023		229,701,709			1
Ending balance at Jun. 30, 2023	9,550.7	$ 7,229	2,337.8	3,167.8	$ 1,563.1	1,600.8	3.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	354.6		351.6	170.1		170.1
Dividends declared on common stock	(140.6)		(140.6)	(175)		(175)
Derivative hedging activity, net of tax	1.5			(0.1)			(0.1)
Ending balance (in shares) at Sep. 30, 2023		229,716,510			1
Ending balance at Sep. 30, 2023	9,767.8	$ 7,231.5	2,548	3,162.8	$ 1,563.1	1,595.9	3.8
Beginning balance (in shares) at Dec. 31, 2023		229,729,296			1
Beginning balance at Dec. 31, 2023	9,685	$ 7,234.9	2,457.8	3,193	$ 1,563.1	1,626.2	3.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	125.8		122.7	32.7		32.7
Dividends declared on common stock	(147.7)		(147.7)
Derivative hedging activity, net of tax	1.3			(0.1)			(0.1)
Ending balance (in shares) at Mar. 31, 2024		229,922,338			1
Ending balance at Mar. 31, 2024	9,664.1	$ 7,235	2,432.4	3,225.6	$ 1,563.1	1,658.9	3.6
Beginning balance (in shares) at Dec. 31, 2023		229,729,296			1
Beginning balance at Dec. 31, 2023	9,685	$ 7,234.9	2,457.8	3,193	$ 1,563.1	1,626.2	3.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	804.5			291.3
Derivative hedging activity, net of tax	4.1			(0.2)
Ending balance (in shares) at Sep. 30, 2024		229,972,832			1
Ending balance at Sep. 30, 2024	10,056.2	$ 7,242.4	2,808.3	3,408.1	$ 1,563.1	1,841.5	3.5
Beginning balance (in shares) at Mar. 31, 2024		229,922,338			1
Beginning balance at Mar. 31, 2024	9,664.1	$ 7,235	2,432.4	3,225.6	$ 1,563.1	1,658.9	3.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	210.1		207	74.6		74.6
Dividends declared on common stock	(147.7)		(147.7)
Derivative hedging activity, net of tax	1.4			(0.1)			(0.1)
Ending balance (in shares) at Jun. 30, 2024		229,954,524			1
Ending balance at Jun. 30, 2024	9,731.7	$ 7,239.2	2,491.3	3,300.1	$ 1,563.1	1,733.5	3.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	468.6		465.6	184		184
Dividends declared on common stock	(147.8)		(147.8)	(76)		(76)
Derivative hedging activity, net of tax	1.4			0
Ending balance (in shares) at Sep. 30, 2024		229,972,832			1
Ending balance at Sep. 30, 2024	$ 10,056.2	$ 7,242.4	$ 2,808.3	$ 3,408.1	$ 1,563.1	$ 1,841.5	$ 3.5

ORGANIZATION AND BASIS OF PRESE

ORGANIZATION AND BASIS OF PRESENTATION	9 Months Ended
	Sep. 30, 2024
Accounting Policies [Abstract]
ORGANIZATION AND BASIS OF PRESENTATION	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 kilovolt (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 15,800 megawatts (MWs) of owned generating capacity and renewable power purchase agreements and engage in the generation, transmission, distribution and sale of electricity to approximately 1.7 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 2023 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 the variable interest entities (VIE) of which Evergy and Evergy Kansas Central are the primary beneficiaries. 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). Cash, Cash Equivalents and Restricted Cash Cash equivalents consist of highly liquid investments with original maturities of three months or less at acquisition. Evergy has restricted cash included in Other Current Assets and Other Non-current Assets on Evergy's consolidated balance sheet to facilitate the servicing of Evergy Missouri West Storm Funding I, LLC's (Evergy Missouri West Storm Funding) debt and the funding requirements for a jointly-owned generation facility. See Note 15 for additional information on the VIE. The following table summarizes the cash, cash equivalents and restricted cash included on Evergy's consolidated balance sheet. September 30 December 31 Evergy (millions) Current assets Cash and cash equivalents $ 34.6 $ 27.7 Other 20.4 — Other assets Other 1.7 — Total cash, cash equivalents and restricted cash $ 56.7 $ 27.7 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. September 30 December 31 Evergy (millions) Fuel inventory $ 232.6 $ 257.3 Supplies 586.3 518.9 Fuel inventory and supplies $ 818.9 $ 776.2 Evergy Kansas Central Fuel inventory $ 136.0 $ 138.6 Supplies 313.5 273.3 Fuel inventory and supplies $ 449.5 $ 411.9 Evergy Metro Fuel inventory $ 60.6 $ 81.5 Supplies 202.6 183.1 Fuel inventory and supplies $ 263.2 $ 264.6 Property, Plant and Equipment The following tables summarize the property, plant and equipment of Evergy, Evergy Kansas Central and Evergy Metro. September 30, 2024 Evergy Evergy Kansas Central Evergy Metro (millions) Electric plant in service $ 35,925.4 $ 17,578.2 $ 13,318.7 Electric plant acquisition adjustment 742.9 724.9 — Accumulated depreciation (13,948.5) (6,792.6) (5,666.2) Plant in service, net 22,719.8 11,510.5 7,652.5 Construction work in progress 1,725.9 1,060.4 506.9 Nuclear fuel, net 167.0 83.2 83.8 Plant to be retired, net (b) 0.7 0.7 — Property, plant and equipment, net $ 24,613.4 $ 12,654.8 $ 8,243.2 December 31, 2023 Evergy Evergy Kansas Central Evergy Metro (millions) Electric plant in service (a) $ 34,558.1 $ 16,858.7 $ 13,005.5 Electric plant acquisition adjustment 724.9 724.9 — Accumulated depreciation (a) (13,301.6) (6,502.7) (5,404.9) Plant in service, net (a) 21,981.4 11,080.9 7,600.6 Construction work in progress 1,543.5 939.1 428.7 Nuclear fuel, net 203.0 101.1 101.9 Plant to be retired, net (b) 0.8 0.8 — Property, plant and equipment, net (a) $ 23,728.7 $ 12,121.9 $ 8,131.2 (a) As of September 30, 2024, Evergy and Evergy Kansas Central classified Property, Plant and Equipment of VIE, net as Property, Plant and Equipment, net. To conform with the current period presentation, amounts previously reported as Property, Plant and Equipment of VIE, net as of December 31, 2023, have been reclassified to Property, Plant and Equipment, net. (b) As of September 30, 2024 and December 31, 2023, represents the planned retirement of Evergy Kansas Central analog meters prior to the end of their remaining useful lives. Other Expense The table below shows the detail of other expense for each of the Evergy Companies. Three Months Ended Year to Date 2024 2023 2024 2023 Evergy (millions) Non-service cost component of net benefit cost $ (3.6) $ (6.4) $ (12.8) $ (37.2) Corporate-owned life insurance (5.9) (5.9) (16.7) (16.6) Other (0.3) (0.5) (1.2) (1.3) Other expense $ (9.8) $ (12.8) $ (30.7) $ (55.1) Evergy Kansas Central Non-service cost component of net benefit cost $ 0.5 $ (4.5) $ 1.6 $ (12.7) Corporate-owned life insurance (5.6) (5.6) (16.0) (15.9) Other (0.1) (0.1) (0.3) (0.2) Other expense $ (5.2) $ (10.2) $ (14.7) $ (28.8) Evergy Metro Non-service cost component of net benefit cost $ (2.5) $ (0.1) $ (8.6) $ (18.0) Corporate-owned life insurance (0.3) (0.4) (0.7) (0.8) Other — — (0.7) (0.5) Other expense $ (2.8) $ (0.5) $ (10.0) $ (19.3) Earnings Per Share To compute basic earnings per common share (EPS), Evergy divides net income attributable to Evergy, Inc. by the weighted average number of common shares outstanding. Diluted EPS includes the effect of issuable common shares resulting from restricted share units (RSUs), restricted stock, convertible notes and a warrant. Evergy computes the dilutive effects of potential issuances of common shares using the treasury stock method, the contingently issuable share method or the if-converted method, as applicable. The following table reconciles Evergy's basic and diluted EPS. Three Months Ended Year to Date 2024 2023 2024 2023 Income (millions, except per share amounts) Net income $ 468.6 $ 354.6 $ 804.5 $ 682.5 Less: net income attributable to noncontrolling interests 3.0 3.0 9.2 9.2 Net income attributable to Evergy, Inc. $ 465.6 $ 351.6 $ 795.3 $ 673.3 Common Shares Outstanding Weighted average number of common shares outstanding - basic 230.3 230.1 230.3 230.0 Add: effect of dilutive securities 0.3 0.4 0.2 0.5 Diluted average number of common shares outstanding 230.6 230.5 230.5 230.5 Basic EPS $ 2.02 $ 1.53 $ 3.45 $ 2.93 Diluted EPS $ 2.02 $ 1.53 $ 3.45 $ 2.92 There were no anti-dilutive shares excluded from the computation of diluted EPS for the three months ended and year to date September 30, 2024. Anti-dilutive securities excluded from the computation of diluted EPS for the three months ended and year to date September 30, 2023 were 3,950,000 common shares issuable pursuant to a warrant. Also, there was no dilution resulting from Evergy's convertible notes for the three months ended and year to date September 30, 2024 and 2023. Dividends Declared In November 2024, Evergy's Board of Directors (Evergy Board) declared a quarterly dividend of $0.6675 per share on Evergy's common stock. The common dividend is payable on December 20, 2024, to shareholders of record as of November 21, 2024. In November 2024, Evergy Kansas Central's Board of Directors declared a cash dividend to Evergy of up to $110.0 million, payable on or before December 19, 2024. In November 2024, Evergy Metro's Board of Directors declared a cash dividend to Evergy of up to $110.0 million, payable on or before December 19, 2024. Supplemental Cash Flow Information Evergy Year to Date September 30 2024 2023 Cash paid for (received from): (millions) Interest, net of amount capitalized $ 361.6 $ 370.3 Income taxes, net of refunds 18.1 19.0 Right-of-use assets obtained in exchange for new operating lease liabilities 4.1 12.1 Right-of-use assets obtained in exchange for new finance lease liabilities 12.4 3.7 Non-cash investing transactions: Property, plant and equipment additions 178.7 171.4 Evergy Kansas Central Year to Date September 30 2024 2023 Cash paid for (received from): (millions) Interest, net of amount capitalized $ 160.6 $ 149.4 Income taxes, net of refunds 8.3 53.0 Right-of-use assets obtained in exchange for new operating lease liabilities 2.4 6.4 Right-of-use assets obtained in exchange for new finance lease liabilities 7.9 3.7 Non-cash investing transactions: Property, plant and equipment additions 116.6 85.1 Evergy Metro Year to Date September 30 2024 2023 Cash paid for (received from): (millions) Interest, net of amount capitalized $ 90.0 $ 82.2 Income taxes, net of refunds 21.3 (0.4) Right-of-use assets obtained in exchange for new operating lease liabilities 1.7 5.1 Right-of-use assets obtained in exchange for new finance lease liabilities 3.0 — Non-cash investing transactions: Property, plant and equipment additions 47.7 65.4 Renewable Plant Investments Evergy Kansas Central intends to construct and own an approximately 159 MW solar generation facility to be located in Kansas and called Kansas Sky. The solar generation facility is expected to begin operations by summer of 2027. The construction of Kansas Sky is subject to the granting by the Kansas Corporation Commission (KCC) of predetermination with reasonably acceptable terms and other closing conditions. In November 2024, Evergy Kansas Central requested predetermination from the KCC. In the third quarter of 2024, Evergy Missouri West entered into agreements to own two solar generation facilities currently under development. The first facility, to be called Sunflower Sky, is a solar generation facility to be located in Kansas with an expected generating capacity of approximately 65 MW. The second facility, to be called Foxtrot, is a solar generation facility to be located in Missouri with an expected generating capacity of approximately 100 MW. The solar generation facilities are expected to begin operations by summer of 2027. The agreements are subject to regulatory approvals and closing conditions, including the granting by the Public Service Commission of the State of Missouri (MPSC) of a Certificate of Convenience and Necessity (CCN) with reasonably acceptable terms. In October 2024, Evergy Missouri West filed an application for a CCN. Evergy Missouri West requested a response from the MPSC by May 2025. Natural Gas Plant Investments In October 2024, Evergy announced its plan to construct two combined-cycle natural gas plants located in Kansas. Evergy Kansas Central and Evergy Missouri West will jointly-own the first site and expect it to have an initial generating capacity of approximately 705 MW. The plant is expected to begin operations by summer of 2029. In November 2024, Evergy Kansas Central requested predetermination from the KCC. In the fourth quarter of 2024, Evergy Missouri West plans to request a CCN from the MPSC. The second site is expected to be jointly-owned by Evergy Kansas Central and another Evergy utility still to be determined. The Evergy Companies expect the second site to also have an initial generating capacity of approximately 705 MW. The plant is expected to begin operations by summer of 2030. In November 2024, Evergy Kansas Central requested predetermination from the KCC with a request to potentially reassign a portion to another Evergy utility. A request for a CCN with the MPSC is expected in the fourth quarter of 2024.

REVENUE

REVENUE	9 Months Ended
	Sep. 30, 2024
Revenue from Contract with Customer [Abstract]
REVENUE	REVENUE Evergy's, Evergy Kansas Central's and Evergy Metro's revenues disaggregated by customer class are summarized in the following tables. Evergy Three Months Ended Year to Date 2024 2023 2024 2023 Revenues (millions) Residential $ 730.8 $ 675.1 $ 1,746.5 $ 1,626.4 Commercial 615.2 528.6 1,533.7 1,419.3 Industrial 188.9 158.9 524.0 475.3 Other retail 10.9 11.6 33.0 31.8 Total electric retail $ 1,545.8 $ 1,374.2 $ 3,837.2 $ 3,552.8 Wholesale 114.7 148.3 259.0 301.8 Transmission 123.1 101.9 360.9 308.2 Industrial steam and other 6.5 7.1 20.7 24.6 Total revenue from contracts with customers $ 1,790.1 $ 1,631.5 $ 4,477.8 $ 4,187.4 Other 21.3 37.8 112.1 132.9 Operating revenues $ 1,811.4 $ 1,669.3 $ 4,589.9 $ 4,320.3 Evergy Kansas Central Three Months Ended Year to Date 2024 2023 2024 2023 Revenues (millions) Residential $ 331.8 $ 262.9 $ 779.8 $ 647.3 Commercial 261.0 196.5 652.9 555.3 Industrial 122.2 93.4 342.4 300.1 Other retail 6.8 5.7 18.9 12.5 Total electric retail $ 721.8 $ 558.5 $ 1,794.0 $ 1,515.2 Wholesale 79.1 106.3 194.9 232.7 Transmission 115.8 97.6 340.1 294.8 Other 0.9 0.4 2.7 2.1 Total revenue from contracts with customers $ 917.6 $ 762.8 $ 2,331.7 $ 2,044.8 Other (0.1) 10.5 6.3 46.7 Operating revenues $ 917.5 $ 773.3 $ 2,338.0 $ 2,091.5 Evergy Metro Three Months Ended Year to Date 2024 2023 2024 2023 Revenues (millions) Residential $ 252.0 $ 259.9 $ 592.9 $ 603.9 Commercial 254.1 232.9 610.3 606.1 Industrial 39.1 37.2 103.8 100.6 Other retail 2.4 3.4 7.9 9.5 Total electric retail $ 547.6 $ 533.4 $ 1,314.9 $ 1,320.1 Wholesale 33.0 43.4 64.8 80.7 Transmission 5.2 3.7 15.0 10.8 Other 1.3 0.9 3.8 3.3 Total revenue from contracts with customers $ 587.1 $ 581.4 $ 1,398.5 $ 1,414.9 Other 21.2 26.8 104.7 85.0 Operating revenues $ 608.3 $ 608.2 $ 1,503.2 $ 1,499.9

RECEIVABLES

RECEIVABLES	9 Months Ended
	Sep. 30, 2024
Receivables [Abstract]
RECEIVABLES	RECEIVABLES The Evergy Companies' receivables are detailed in the following table. September 30 December 31 2024 2023 Evergy (millions) Customer accounts receivable - billed $ 22.2 $ 2.6 Customer accounts receivable - unbilled 199.1 109.1 Other receivables 179.4 169.4 Allowance for credit losses (13.9) (24.2) Total $ 386.8 $ 256.9 Evergy Kansas Central Customer accounts receivable - billed $ — $ — Customer accounts receivable - unbilled 86.0 39.9 Other receivables 134.9 143.5 Allowance for credit losses (6.2) (11.6) Total $ 214.7 $ 171.8 Evergy Metro Customer accounts receivable - billed $ — $ — Customer accounts receivable - unbilled 63.6 27.2 Other receivables 58.2 35.7 Allowance for credit losses (5.1) (7.9) Total $ 116.7 $ 55.0 The Evergy Companies' other receivables as of September 30, 2024 and December 31, 2023, 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. September 30 December 31 2024 2023 (millions) Evergy $ 87.6 $ 61.5 Evergy Kansas Central 81.4 59.9 Evergy Metro 4.9 0.8 The change in the Evergy Companies' allowance for credit losses is summarized in the following table. 2024 2023 Evergy (millions) Beginning balance January 1 $ 24.2 $ 31.4 Credit loss expense 4.9 7.4 Write-offs (24.1) (25.2) Recoveries of prior write-offs 8.9 7.9 Ending balance September 30 $ 13.9 $ 21.5 Evergy Kansas Central Beginning balance January 1 $ 11.6 $ 16.9 Credit loss expense 2.2 3.1 Write-offs (11.6) (13.6) Recoveries of prior write-offs 4.0 3.5 Ending balance September 30 $ 6.2 $ 9.9 Evergy Metro Beginning balance January 1 $ 7.9 $ 9.3 Credit loss expense 2.5 2.7 Write-offs (8.6) (7.8) Recoveries of prior write-offs 3.3 3.0 Ending balance September 30 $ 5.1 $ 7.2 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. September 30 December 31 2024 2023 (millions) Evergy $ 425.0 $ 342.0 Evergy Kansas Central 215.0 166.0 Evergy Metro 160.0 126.0 In February 2024, Evergy Kansas Central, Evergy Metro and Evergy Missouri West amended the terms of their receivable sale facilities, including extending the expiration of each receivable sale facility to November 2025. Prior to the amendment to Evergy Kansas Central's facility, it allowed for $185.0 million in aggregate outstanding principal amount of borrowings from mid-November through mid-July and then $200.0 million from mid-July through mid-November. Prior to the amendment to Evergy Metro's facility, it allowed for $130.0 million in aggregate outstanding principal amount of borrowings at any time. Prior to the amendment to Evergy Missouri West's facility, it allowed for $50.0 million in aggregate outstanding principal amount of borrowings from mid-November through mid-July and then $65.0 million from mid-July through mid-November.

RATE MATTERS AND REGULATION

RATE MATTERS AND REGULATION	9 Months Ended
	Sep. 30, 2024
Regulated Operations [Abstract]
RATE MATTERS AND REGULATION	RATE MATTERS AND REGULATION KCC Proceedings Evergy Kansas Central 2024 Transmission Delivery Charge (TDC) In April 2024, 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 May 2024 and are expected to increase Evergy Kansas Central's annual retail revenues by $80.1 million when compared to 2023. Evergy Metro 2024 TDC In April 2024, 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 2024 and are expected to increase Evergy Metro's annual retail revenues by $7.1 million when compared to 2023. MPSC Proceedings Evergy Missouri West's 2024 Rate Case Proceeding In February 2024, Evergy Missouri West filed an application with the MPSC to request an increase to its retail revenues of approximately $104 million. Evergy Missouri West's request reflected a return on equity of 10.5% (with a capital structure composed of 52% equity) and increases related to the recovery of infrastructure investments made to improve reliability and enhance customer service and the inclusion of certain costs related to Dogwood and Crossroads Energy Center (Crossroads), two natural gas plants. In October 2024, Evergy Missouri West, MPSC staff and other intervenors in the case reached a unanimous partial stipulation and agreement to settle certain issues in the case. The partial stipulation and agreement provided for an increase to Evergy Missouri West's retail revenues of approximately $55 million after lowering base rates for fuel and purchased power expense of approximately $49 million and rebasing property tax expense. The partial stipulation and agreement excludes one prospective issue related to the proportion of fuel and purchased power costs that are shared with shareholders in Evergy Missouri West's fuel adjustment clause which will be resolved by the MPSC in its final order. The unanimous partial stipulation and agreement is subject to the approval of the MPSC expected in December 2024. If approved, new rates are expected to be effective in January 2025. Evergy Missouri West February 2021 Winter Weather Event Securitization In February 2021, much of the central and southern United States, including the service territories of the Evergy Companies, experienced a significant winter weather event that resulted in extremely cold temperatures over a multi-day period (February 2021 winter weather event). In November 2022, the MPSC issued a revised financing order authorizing Evergy Missouri West to issue securitized bonds to recover its extraordinary fuel and purchased power costs incurred as part of the February 2021 winter weather event. As part of the order, the MPSC found that Evergy Missouri West's costs were prudently incurred, that it should only be allowed to recover 95% of its extraordinary fuel and purchased power costs consistent with the 5% sharing provision of its fuel recovery mechanism, that it should be allowed to recover carrying costs incurred since February 2021 at Evergy Missouri West's long-term debt rate of 5.06% and approved a 15 year repayment period for the bonds with a 17 year legal maturity. Evergy Missouri West continued to record carrying charges on its February 2021 winter weather event regulatory asset until it issued the securitized bonds in February 2024. See Note 9 for additional information regarding the issuance of the securitized bonds. 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 Annual Update Most recently, the updated TFR was expected to adjust Evergy Kansas Central's annual transmission revenues by approximately: • $19.1 million increase effective in January 2025; • $115.8 million increase effective in January 2024; and • $21.7 million decrease effective in March 2023. See "Evergy Kansas Central TFR Formal Challenge" within this Note 4 for additional information regarding the March 2023 adjustment. Evergy Kansas Central TFR Formal Challenge In March 2022, certain Evergy Kansas Central TFR customers submitted a formal challenge regarding the implementation of Evergy Kansas Central's TFR, specifically how Evergy Kansas Central's capital structure was calculated as part of determining the Annual Transmission Revenue Requirement. As part of this challenge, the customers requested that Evergy Kansas Central make refunds for over-collections in rate years 2018 through 2022 as a result of the calculation of its capital structure included in the TFR. Evergy Kansas Central disputed that any refunds for 2018 through 2022 were required because Evergy Kansas Central was following its approved TFR formula. In December 2022, FERC issued an order addressing the challenge to the 2020 through 2022 over-collections which were refunded to customers as part of Evergy Kansas Central's 2023 TFR effective in March 2023. In February 2023, certain Evergy Kansas Central TFR customers submitted a formal complaint with FERC requesting the refund of over-collections related to the 2018 and 2019 rate years. As of September 30, 2024 and December 31, 2023, Evergy and Evergy Kansas Central had recorded a $7.1 million regulatory liability related to the 2018 and 2019 rate year refund request. Evergy is awaiting a response from FERC. Evergy Metro TFR Annual Update Most recently, the updated TFR was expected to adjust Evergy Metro's annual transmission revenues by approximately: • $1.0 million increase effective in January 2025; • $23.7 million increase effective in January 2024; and • $8.6 million increase effective in January 2023.

GOODWILL

GOODWILL	9 Months Ended
	Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL	GOODWILL GAAP requires goodwill to be tested for impairment annually and when an event occurs indicating the possibility that an impairment exists. Evergy's impairment test for the $2,336.6 million of goodwill that was recorded as a result of the Great Plains Energy, Inc. (Great Plains Energy) and Evergy Kansas Central merger was conducted as of May 1, 2024. The goodwill impairment test consists of comparing the fair value of a reporting unit to its carrying amount, including goodwill, to identify potential impairment. In the event that the carrying amount exceeds the fair value of the reporting unit, an impairment loss is recognized for the difference between the carrying amount of the reporting unit and its fair value. Evergy's consolidated operations are considered one reporting unit for assessment of impairment, as management assesses financial performance and allocates resources on a consolidated basis. The determination of fair value of the reporting unit consisted of two valuation techniques: an income approach consisting of a discounted cash flow analysis and a market approach consisting of a determination of reporting unit invested capital using a market multiple derived from the historical earnings before interest, income taxes, depreciation and amortization and market prices of the stock of peer companies. The results of the two techniques were evaluated and weighted to determine a point within the range that management considered representative of fair value for the reporting unit. The fair value of the reporting unit exceeded the carrying amount, including goodwill. As a result, there was no impairment of goodwill in 2024 or 2023.

ASSET RETIREMENT OBLIGATIONS

ASSET RETIREMENT OBLIGATIONS	9 Months Ended
	Sep. 30, 2024
Asset Retirement Obligation Disclosure [Abstract]
ASSET RETIREMENT OBLIGATIONS	ASSET RETIREMENT OBLIGATIONS Asset retirement obligations (AROs) associated with tangible long-lived assets are legal obligations that exist under enacted laws, statutes and written or oral contracts, including obligations arising under the doctrine of promissory estoppel. These liabilities are recognized at estimated fair value as incurred with a corresponding amount capitalized as part of the cost of the related long-lived assets and depreciated over their useful lives. Accretion of the liabilities due to the passage of time is recorded to a regulatory asset and/or liability. Changes in the estimated fair values of the liabilities are recognized when known. Evergy Kansas Central, Evergy Metro and Evergy Missouri West have AROs related to asbestos abatement and the closure and post-closure care of ponds and landfills containing coal combustion residuals (CCRs). In addition, Evergy Kansas Central and Evergy Metro have AROs related to decommissioning Wolf Creek Generating Station (Wolf Creek) and the retirement of wind generation facilities. The following table summarizes the change in the Evergy Companies' AROs for the periods ending September 30, 2024 and December 31, 2023. Evergy Evergy Kansas Central Evergy Metro 2024 2023 2024 2023 2024 2023 (millions) Beginning balance January 1 $ 1,203.1 $ 1,153.2 $ 599.3 $ 565.1 $ 460.4 $ 444.2 Additions 72.8 9.7 44.8 9.7 24.1 — Revision in timing and/or estimates — 3.2 — 1.6 — 1.6 Settlements (8.9) (21.8) (5.6) (9.8) (3.0) (8.6) Accretion 43.3 58.8 25.1 32.7 15.9 23.2 Ending balance $ 1,310.3 $ 1,203.1 $ 663.6 $ 599.3 $ 497.4 $ 460.4 Less: current portion (46.4) (40.3) (27.5) (22.2) (16.4) (16.0) Total noncurrent asset $ 1,263.9 $ 1,162.8 $ 636.1 $ 577.1 $ 481.0 $ 444.4 In the second quarter of 2024, Evergy, Evergy Kansas Central and Evergy Metro recorded $72.8 million, $44.8 million and $24.1 million of ARO liabilities, respectively, related to the new Environmental Protection Agency (EPA) CCR regulation focused on legacy surface impoundments and historic placements of CCR. This regulation expands applicability of the 2015 CCR regulation to inactive landfills and beneficial use sites not previously regulated. Evergy recorded an offsetting balance to property, plant and equipment, net, or a regulatory asset for each ARO liability. See Note 12 for additional information regarding the regulation of CCRs.

PENSION PLANS AND POST-RETIREME

PENSION PLANS AND POST-RETIREMENT BENEFITS	9 Months Ended
	Sep. 30, 2024
Retirement Benefits [Abstract]
PENSION PLANS AND POST-RETIREMENT BENEFITS	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 defined benefit plans, consisting of Evergy Kansas South's and Evergy Metro's respective 47% ownership shares. For the majority of employees, pension benefits under these plans reflect the employees' compensation, years of service and age at retirement. However, for the plan covering Evergy Kansas Central's employees, the benefits for non-union employees hired between 2002 and the second quarter of 2018 and union employees hired beginning in 2012 are derived from a cash balance account formula. The plan was closed to future non-union employees in 2018. For the plans covering Evergy Metro's employees, the benefits for union employees hired beginning in 2014 are derived from a cash balance account formula and the plans were closed to future non-union employees in 2014. Evergy and its subsidiaries also provide certain post-retirement health care and life insurance benefits for substantially all retired employees of Evergy Kansas Central and Evergy Metro and their respective shares of Wolf Creek's post-retirement benefit plans. The Evergy Companies record pension and post-retirement expense in accordance with rate orders from the KCC and MPSC that allow the difference between pension and post-retirement costs under GAAP and costs for ratemaking to be recognized as a regulatory asset or liability. This difference between financial and regulatory accounting methods is due to timing and will be eliminated over the life of the plans. For the three months ended and year to date September 30, 2024, Evergy, Evergy Kansas Central and Evergy Metro recorded no pension settlement gains or losses. For the three months ended September 30, 2023, Evergy, Evergy Kansas Central and Evergy Metro recorded pension settlement (gains) losses of ($1.7) million, $0.4 million and ($2.1) million, respectively. Year to date September 30, 2023, Evergy, Evergy Kansas Central and Evergy Metro recorded pension settlement (gains) losses of ($19.6) million, $1.0 million and ($20.6) million, respectively. These settlement gains and losses were the result of accelerated distributions as a result of employee retirements for certain plan participants. Evergy, Evergy Kansas Central and Evergy Metro deferred substantially all of the gains and losses to regulatory assets or regulatory liabilities and expect to recover these amounts over future periods pursuant to regulatory agreements. 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 September 30, 2024 Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Components of net periodic benefit costs (millions) Service cost $ 11.6 $ 4.8 $ 6.8 $ 0.5 $ 0.3 $ 0.2 Interest cost 22.4 11.4 10.7 2.6 1.2 1.2 Expected return on plan assets (21.7) (10.8) (10.9) (2.9) (1.4) (1.4) Prior service cost 0.5 0.5 — — — (0.1) Recognized net actuarial (gain) loss (4.3) 0.2 (4.4) (0.9) (0.5) (0.5) Net periodic benefit costs before regulatory adjustment and intercompany allocations 8.5 6.1 2.2 (0.7) (0.4) (0.6) Regulatory adjustment 5.3 (1.8) 6.9 — 0.2 (0.1) Intercompany allocations — (0.4) (0.5) — (0.1) 0.1 Net periodic benefit costs (income) $ 13.8 $ 3.9 $ 8.6 $ (0.7) $ (0.3) $ (0.6) Pension Benefits Post-Retirement Benefits Year to Date September 30, 2024 Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Components of net periodic benefit costs (millions) Service cost $ 34.6 $ 14.3 $ 20.3 $ 1.3 $ 0.7 $ 0.6 Interest cost 67.2 34.2 32.2 7.6 3.8 3.7 Expected return on plan assets (65.1) (32.3) (32.8) (8.6) (4.4) (4.1) Prior service cost 1.5 1.5 — — — (0.3) Recognized net actuarial (gain) loss (13.0) 0.6 (13.1) (2.9) (1.5) (1.4) Net periodic benefit costs before regulatory adjustment and intercompany allocations 25.2 18.3 6.6 (2.6) (1.4) (1.5) Regulatory adjustment 17.9 (5.0) 22.4 — 0.6 (0.3) Intercompany allocations — (1.4) (1.6) — (0.1) 0.4 Net periodic benefit costs (income) $ 43.1 $ 11.9 $ 27.4 $ (2.6) $ (0.9) $ (1.4) Pension Benefits Post-Retirement Benefits Three Months Ended September 30, 2023 Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Components of net periodic benefit costs (millions) Service cost $ 11.4 $ 4.7 $ 6.7 $ 0.5 $ 0.2 $ 0.3 Interest cost 22.9 11.6 11.0 2.7 1.6 1.4 Expected return on plan assets (21.9) (11.0) (10.9) (2.9) (1.7) (1.4) Prior service cost 0.4 0.5 — — — (0.1) Recognized net actuarial gain (4.8) (0.3) (4.3) (1.1) (0.5) (0.6) Settlement (gain) loss (1.7) 0.4 (2.1) — — — Net periodic benefit costs before regulatory adjustment and intercompany allocations 6.3 5.9 0.4 (0.8) (0.4) (0.4) Regulatory adjustment 14.4 6.8 7.3 (0.2) (0.6) 0.5 Intercompany allocations — (0.5) (0.3) — 0.1 — Net periodic benefit costs (income) $ 20.7 $ 12.2 $ 7.4 $ (1.0) $ (0.9) $ 0.1 Pension Benefits Post-Retirement Benefits Year to Date September 30, 2023 Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Components of net periodic benefit costs (millions) Service cost $ 34.6 $ 14.3 $ 20.3 $ 1.4 $ 0.7 $ 0.7 Interest cost 68.3 34.8 32.7 8.3 4.3 4.1 Expected return on plan assets (65.8) (33.2) (32.6) (8.9) (4.7) (4.2) Prior service cost 1.4 1.5 — — — (0.3) Recognized net actuarial gain (14.3) (1.0) (12.7) (3.2) (1.5) (1.6) Settlement (gain) loss (19.6) 1.0 (20.6) — — — Net periodic benefit costs before regulatory adjustment and intercompany allocations 4.6 17.4 (12.9) (2.4) (1.2) (1.3) Regulatory adjustment 69.9 21.1 48.3 (0.5) (1.8) 1.5 Intercompany allocations — (1.6) (0.8) — 0.2 — Net periodic benefit costs (income) $ 74.5 $ 36.9 $ 34.6 $ (2.9) $ (2.8) $ 0.2 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. Year to date September 30, 2024, Evergy, Evergy Kansas Central and Evergy Metro made no cash pension contributions. Evergy expects to make cash pension contributions of $36.8 million in 2024 to satisfy the Employee Retirement Income Security Act of 1974, as amended (ERISA) funding requirements and KCC and MPSC rate orders, of which $12.3 million is expected to be paid by Evergy Kansas Central and $24.5 million is expected to be paid by Evergy Metro. Year to date September 30, 2024, Evergy, Evergy Kansas Central and Evergy Metro made post-retirement benefit contributions of $0.8 million, $0.4 million and $0.4 million, respectively. Evergy, Evergy Kansas Central and Evergy Metro expect to make no additional contributions in 2024 to the post-retirement benefit plans.

SHORT-TERM BORROWINGS AND SHORT

SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDIT	9 Months Ended
	Sep. 30, 2024
Debt Disclosure [Abstract]
SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDIT	SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDIT In August 2024, the Evergy Companies extended the expiration date of their $2.5 billion master credit facility from 2027 to 2028. 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. The applicable interest rates and commitment fees of the facility are subject to upward or downward adjustments, within certain limitations, if Evergy achieves, or fails to achieve, certain sustainability-linked targets based on two key performance indicator metrics: (i) Non-Emitting Generation Capacity and (ii) Diverse Supplier Spend (as defined in the facility). The applicable interest rates and commitment fees of the facility are also subject to changes in ratings by the credit rating agencies. 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. As of September 30, 2024, 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 September 30, 2024 and December 31, 2023. Amounts Drawn Master Credit Facility Commercial Paper Letters of Credit Cash Borrowings Available Borrowings Weighted Average Interest Rate on Short-Term Borrowings September 30, 2024 (millions) Evergy, Inc. $ 700.0 $ 483.2 $ 0.7 $ — $ 216.1 4.95% Evergy Kansas Central 950.0 691.7 1.0 — 257.3 5.08% Evergy Metro 450.0 71.9 1.0 — 377.1 4.94% Evergy Missouri West 400.0 176.0 — — 224.0 4.94% Evergy $ 2,500.0 $ 1,422.8 $ 2.7 $ — $ 1,074.5 December 31, 2023 Evergy, Inc. $ 300.0 $ — $ 0.7 $ — $ 299.3 —% Evergy Kansas Central 750.0 230.4 1.0 — 518.6 5.56% Evergy Metro 750.0 423.3 — — 326.7 5.58% Evergy Missouri West 700.0 298.1 — — 401.9 5.66% Evergy $ 2,500.0 $ 951.8 $ 1.7 $ — $ 1,546.5

LONG-TERM DEBT

LONG-TERM DEBT	9 Months Ended
	Sep. 30, 2024
Debt Disclosure [Abstract]
LONG-TERM DEBT	LONG-TERM DEBT Mortgage Bonds In April 2024, Evergy Metro issued, at a discount, $300.0 million of 5.40% Mortgage Bonds, maturing in 2034. Proceeds were used to pay down commercial paper and for general corporate purposes. In May 2024, Evergy Missouri West issued, at a discount, $300.0 million of 5.65% First Mortgage Bonds (FMBs), maturing in 2034. Proceeds were used to pay down commercial paper and for general corporate purposes. Senior Notes In September 2024, Evergy repaid its $800.0 million of 2.45% Senior Notes at maturity. Securitized Bonds

DERIVATIVE INSTRUMENTS

DERIVATIVE INSTRUMENTS	9 Months Ended
	Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE INSTRUMENTS	DERIVATIVE INSTRUMENTS The Evergy Companies engage in the wholesale and retail sale of electricity as part of their regulated electric operations, in addition to limited non-regulated energy marketing activities. These activities expose the Evergy Companies to market risks associated with the price of electricity, natural gas and other energy-related products. Management has established risk management policies and strategies to reduce the potentially adverse effects that the volatility of the markets may have on the Evergy Companies' operating results. The Evergy Companies' commodity risk management activities, which are subject to the management, direction and control of an internal risk management committee, utilize derivative instruments to reduce the effects of fluctuations in wholesale sales and fuel and purchased power expense caused by commodity price volatility. The Evergy Companies are also exposed to market risks arising from changes in interest rates and may use derivative instruments to manage these risks. The Evergy Companies' interest rate risk management activities have included using derivative instruments to hedge against future interest rate fluctuations on anticipated debt issuances. The Evergy Companies also engage in non-regulated energy marketing activity for trading purposes, primarily at Evergy Kansas Central, which focuses on seizing market opportunities to create value driven by expected changes in the market prices of commodities, primarily electricity and natural gas. The Evergy Companies consider various qualitative factors, such as contract and marketplace attributes, in designating derivative instruments at inception. The Evergy Companies may elect the normal purchases and normal sales (NPNS) exception, which requires the effects of the derivative to be recorded when the underlying contract settles under accrual accounting. The Evergy Companies account for derivative instruments that are not designated as NPNS primarily as either economic hedges or trading contracts (non-hedging derivatives) which are recorded as assets or liabilities on the consolidated balance sheets at fair value. See Note 11 for additional information on the Evergy Companies' methods for assessing the fair value of derivative instruments. Changes in the fair value of non-hedging derivatives that are related to the Evergy Companies' regulated operations are deferred to a regulatory asset or regulatory liability when determined to be probable of future recovery or refund from/to customers. Recovery of the actual costs incurred by regulated activities will not impact earnings but will impact cash flows due to the timing of the recovery mechanism. Cash flows for all derivative instruments are classified as operating activities on the Evergy Companies' statements of cash flows, with the exception of cash flows for interest rate swap agreements accounted for as cash flows hedges of forecasted debt transactions, which are recorded as financing activities. Changes in the fair value of non-hedging derivatives that are not related to the Evergy Companies' regulated operations are recorded in operating revenues on the Evergy Companies' statements of income and comprehensive income. The Evergy Companies offset fair value amounts recognized for derivative instruments under master netting arrangements, which include rights to reclaim cash collateral (a receivable), or the obligation to return cash collateral (a payable). The gross notional contract amount by commodity type for derivative instruments is summarized in the following table. September 30 December 31 Non-hedging derivatives Notional volume unit of measure 2024 2023 Evergy (millions) Commodity contracts Power MWhs 77.3 52.9 Natural gas MMBtu 855.9 559.9 Evergy Kansas Central Commodity contracts Power MWhs 45.8 32.1 Natural gas MMBtu 855.9 558.7 Evergy Metro Commodity contracts Power MWhs 23.9 15.1 The fair values of Evergy's open derivative positions and balance sheet classifications are summarized in the following tables. The fair values below are gross values before netting agreements and netting of cash collateral. September 30 December 31 Evergy 2024 2023 Non-hedging derivatives Balance sheet location Commodity contracts (millions) Power Other assets - current $ 22.0 $ 23.2 Other assets - long-term 36.6 35.7 Natural gas Other assets - current 38.1 68.1 Other assets - long-term 3.7 6.0 Total derivative assets $ 100.4 $ 133.0 Commodity contracts Power Other liabilities - current $ 11.4 $ 21.0 Other liabilities - long-term 34.5 32.9 Natural gas Other liabilities - current 38.4 68.1 Other liabilities - long-term 3.9 6.8 Total derivative liabilities $ 88.2 $ 128.8 September 30 December 31 Evergy Kansas Central 2024 2023 Non-hedging derivatives Balance sheet location Commodity contracts (millions) Power Other assets - current $ 9.9 $ 18.3 Other assets - long-term 36.6 35.7 Natural gas Other assets - current 38.1 68.1 Other assets - long-term 3.7 6.0 Total derivative assets $ 88.3 $ 128.1 Commodity contracts Power Other liabilities - current $ 9.2 $ 14.3 Other liabilities - long-term 34.5 32.9 Natural gas Other liabilities - current 38.4 67.0 Other liabilities - long-term 3.9 6.8 Total derivative liabilities $ 86.0 $ 121.0 September 30 December 31 Evergy Metro 2024 2023 Non-hedging derivatives Balance sheet location Commodity contracts (millions) Power Other assets - current $ 8.5 $ 2.1 Total derivative assets $ 8.5 $ 2.1 Commodity contracts Power Other liabilities - current $ 1.5 $ 5.7 Total derivative liabilities $ 1.5 $ 5.7 The following tables present the line items on the Evergy Companies' consolidated balance sheets where derivative assets and liabilities are reported. The gross amounts offset in the tables below show the effect of master netting arrangements and include collateral posted to offset the net position. September 30, 2024 Evergy Evergy Kansas Central Evergy Metro Derivative Assets (millions) Current Gross amounts recognized $ 60.1 $ 48.0 $ 8.5 Gross amounts offset (45.1) (42.9) (1.5) Net amounts presented in other assets - current $ 15.0 $ 5.1 $ 7.0 Long-Term Gross amounts recognized $ 40.3 $ 40.3 $ — Gross amounts offset (11.7) (11.7) — Net amounts presented in other assets - long-term $ 28.6 $ 28.6 $ — Derivative Liabilities Current Gross amounts recognized $ 49.8 $ 47.6 $ 1.5 Gross amounts offset (46.0) (43.8) (1.5) Net amounts presented in other liabilities - current $ 3.8 $ 3.8 $ — Long-Term Gross amounts recognized $ 38.4 $ 38.4 $ — Gross amounts offset (3.7) (3.7) — Net amounts presented in other liabilities - long-term $ 34.7 $ 34.7 $ — December 31, 2023 Evergy Evergy Kansas Central Evergy Metro Derivative Assets (millions) Current Gross amounts recognized $ 91.3 $ 86.4 $ 2.1 Gross amounts offset (78.4) (75.3) (2.1) Net amounts presented in other assets - current $ 12.9 $ 11.1 $ — Long-Term Gross amounts recognized $ 41.7 $ 41.7 $ — Gross amounts offset (11.9) (11.9) — Net amounts presented in other assets - long-term $ 29.8 $ 29.8 $ — Derivative Liabilities Current Gross amounts recognized $ 89.1 $ 81.3 $ 5.7 Gross amounts offset (77.5) (74.4) (2.1) Net amounts presented in other liabilities - current $ 11.6 $ 6.9 $ 3.6 Long-Term Gross amounts recognized $ 39.7 $ 39.7 $ — Gross amounts offset (5.9) (5.9) — Net amounts presented in other liabilities - long-term $ 33.8 $ 33.8 $ — The following table summarizes the amounts of gain (loss) recognized in income for the change in fair value of derivatives not designated as hedging instruments for the Evergy Companies. Three Months Ended Year to Date Location of gain (loss) Contract type 2024 2023 2024 2023 Evergy (millions) Operating revenues Commodity $ (10.8) $ 2.7 $ (20.7) $ 20.3 Total $ (10.8) $ 2.7 $ (20.7) $ 20.3 Evergy Kansas Central Operating revenues Commodity $ (10.8) $ 2.7 $ (20.7) $ 20.3 Total $ (10.8) $ 2.7 $ (20.7) $ 20.3 Credit risk of the Evergy Companies' derivative instruments relates to the potential adverse financial impact resulting from non-performance by a counterparty of its contractual obligations. The Evergy Companies maintain credit policies and employ credit risk mitigation, such as collateral requirements or letters of credit, when necessary to minimize their overall credit risk and monitor exposure. Substantially all of the Evergy Companies' counterparty credit risk associated with derivative instruments relates to Evergy Kansas Central's non-regulated energy marketing activities. As of September 30, 2024, if counterparty groups completely failed to perform on contracts, Evergy's and Evergy Kansas Central's maximum exposure related to derivative assets was $32.9 million. As of September 30, 2024, the potential loss after the consideration of applicable master netting arrangements and collateral received for Evergy and Evergy Kansas Central was $22.7 million. Certain of the Evergy Companies' derivative instruments contain collateral provisions that are tied to the Evergy Companies' credit ratings and may require the posting of collateral for various reasons, including if the Evergy Companies' credit ratings were to fall below investment grade. Substantially all of these derivative instruments relate to Evergy Kansas Central's non-regulated energy marketing activities. The aggregate fair value of all derivative instruments with credit-risk-related contingent features that were in a liability position as of September 30, 2024, was $36.8 million for which Evergy and Evergy Kansas Central have posted $2.5 million collateral in the normal course of business. If the credit-risk-related contingent features underlying these agreements were triggered as of September 30, 2024, Evergy and Evergy Kansas Central could be required to post an additional $33.7 million of collateral to their counterparties.

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	9 Months Ended
	Sep. 30, 2024
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	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 or exchange-traded derivative instruments. 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, non-exchange traded derivative instruments with observable forward curves and options contracts. 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. The types of assets and liabilities included in Level 3 are non-exchange traded derivative instruments for which observable market data is not available to corroborate the valuation inputs and transmission congestion rights (TCRs) in the SPP Integrated Marketplace. 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 are summarized in the following table. September 30, 2024 December 31, 2023 Book Value Fair Value Book Value Fair Value Long-term debt (a) (millions) Evergy (b) $ 11,975.9 $ 11,529.8 $ 11,853.3 $ 11,044.9 Evergy Kansas Central 4,582.7 4,262.0 4,580.4 4,176.6 Evergy Metro 3,222.8 3,108.0 2,924.4 2,738.8 (a) Includes current maturities. (b) Book value as of September 30, 2024 and December 31, 2023, includes $82.9 million and $87.0 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 balances of financial assets and liabilities measured at fair value on a recurring basis. Description September 30, 2024 Netting Level 1 Level 2 Level 3 NAV Evergy Kansas Central (millions) Assets Nuclear decommissioning trust (a) Domestic equity funds $ 151.3 $ — $ 142.2 $ — $ — $ 9.1 International equity funds 84.1 — 84.1 — — — Core bond fund 62.3 — 62.3 — — — High-yield bond fund 32.1 — 32.1 — — — Emerging markets bond fund 20.2 — 20.2 — — — Alternative investments fund 43.9 — — — — 43.9 Real estate securities fund 16.2 — — — — 16.2 Cash equivalents 0.6 — 0.6 — — — Total nuclear decommissioning trust 410.7 — 341.5 — — 69.2 Rabbi trust Fixed income funds 15.1 — 15.1 — — — Equity funds 7.4 — 7.4 — — — Combination debt/equity/other fund 1.7 — 1.7 — — — Cash equivalents 0.2 — 0.2 — — — Total rabbi trust 24.4 — 24.4 — — — Derivative instruments - commodity contracts (b) Power 32.1 (14.4) 10.4 32.8 3.3 — Natural gas 1.6 (40.2) 38.3 3.5 — — Total derivative assets 33.7 (54.6) 48.7 36.3 3.3 — Total assets 468.8 (54.6) 414.6 36.3 3.3 69.2 Liabilities Derivative instruments - commodity contracts (b) Power 36.4 (7.3) 4.0 36.7 3.0 — Natural gas 2.1 (40.2) 38.1 4.2 — — Total derivative liabilities 38.5 (47.5) 42.1 40.9 3.0 — Total liabilities $ 38.5 $ (47.5) $ 42.1 $ 40.9 $ 3.0 $ — Evergy Metro Assets Nuclear decommissioning trust (a) Equity securities $ 361.2 $ — $ 361.2 $ — $ — $ — Debt securities U.S. Treasury 55.4 — 55.4 — — — State and local obligations 2.2 — — 2.2 — — Corporate bonds 44.7 — — 44.7 — — Cash equivalents 3.2 — 3.2 — — — Total nuclear decommissioning trust 466.7 — 419.8 46.9 — — Self-insured health plan trust (c) Equity securities 1.7 — 1.7 — — — Debt securities 8.3 — 2.1 6.2 — — Cash and cash equivalents 3.9 — 3.9 — — — Total self-insured health plan trust 13.9 — 7.7 6.2 — — Derivative instruments - commodity contracts (b) Power 7.0 (1.5) — — 8.5 — Total derivative assets 7.0 (1.5) — — 8.5 — Total assets 487.6 (1.5) 427.5 53.1 8.5 — Liabilities Derivative instruments - commodity contracts (b) Power — (1.5) — — 1.5 — Total derivative liabilities — (1.5) — — 1.5 — Total liabilities $ — $ (1.5) $ — $ — $ 1.5 $ — Description September 30, 2024 Netting Level 1 Level 2 Level 3 NAV Other Evergy (millions) Assets Rabbi trusts Core bond fund $ 8.5 $ — $ 8.5 $ — $ — $ — Total rabbi trusts 8.5 — 8.5 — — — Derivative instruments - commodity contracts (b) Power 2.9 (0.7) — — 3.6 — Total derivative assets 2.9 (0.7) — — 3.6 — Total assets 11.4 (0.7) 8.5 — 3.6 — Liabilities Derivative instruments - commodity contracts (b) Power — (0.7) — — 0.7 — Total derivative liabilities — (0.7) — — 0.7 — Total liabilities $ — $ (0.7) $ — $ — $ 0.7 $ — Evergy Assets Nuclear decommissioning trust (a) $ 877.4 $ — $ 761.3 $ 46.9 $ — $ 69.2 Rabbi trusts 32.9 — 32.9 — — — Self-insured health plan trust (c) 13.9 — 7.7 6.2 — — Derivative instruments - commodity contracts (b) Power 42.0 (16.6) 10.4 32.8 15.4 — Natural gas 1.6 (40.2) 38.3 3.5 — — Total derivative assets 43.6 (56.8) 48.7 36.3 15.4 — Total assets 967.8 (56.8) 850.6 89.4 15.4 69.2 Liabilities Derivative instruments - commodity contracts (b) Power 36.4 (9.5) 4.0 36.7 5.2 — Natural gas 2.1 (40.2) 38.1 4.2 — — Total derivative liabilities 38.5 (49.7) 42.1 40.9 5.2 — Total liabilities $ 38.5 $ (49.7) $ 42.1 $ 40.9 $ 5.2 $ — Description December 31, 2023 Netting Level 1 Level 2 Level 3 NAV Evergy Kansas Central (millions) Assets Nuclear decommissioning trust (a) Domestic equity funds $ 133.1 $ — $ 123.3 $ — $ — $ 9.8 International equity funds 72.6 — 72.6 — — — Core bond fund 56.2 — 56.2 — — — High-yield bond fund 29.1 — 29.1 — — — Emerging markets bond fund 18.3 — 18.3 — — — Alternative investments fund 37.9 — — — — 37.9 Real estate securities fund 17.2 — — — — 17.2 Cash equivalents 0.7 — 0.7 — — — Total nuclear decommissioning trust 365.1 — 300.2 — — 64.9 Rabbi trust Fixed income funds 15.2 — 15.2 — — — Equity funds 7.4 — 7.4 — — — Combination debt/equity/other fund 1.7 — 1.7 — — — Cash equivalents 0.2 — 0.2 — — — Total rabbi trust 24.5 — 24.5 — — — Derivative instruments - commodity contracts (b) Power 40.2 (13.8) 16.3 32.2 5.5 — Natural gas 0.7 (73.4) 72.7 1.4 — — Total derivative assets 40.9 (87.2) 89.0 33.6 5.5 — Total assets 430.5 (87.2) 413.7 33.6 5.5 64.9 Liabilities Derivative instruments - commodity contracts (b) Power 40.3 (6.9) 9.4 34.6 3.2 — Natural gas 0.4 (73.4) 72.6 1.2 — — Total derivative liabilities 40.7 (80.3) 82.0 35.8 3.2 — Total liabilities $ 40.7 $ (80.3) $ 82.0 $ 35.8 $ 3.2 $ — Evergy Metro Assets Nuclear decommissioning trust (a) Equity securities $ 302.4 $ — $ 302.4 $ — $ — $ — Debt securities U.S. Treasury 47.9 — 47.9 — — — State and local obligations 3.8 — — 3.8 — — Corporate bonds 43.9 — — 43.9 — — Foreign governments 0.1 — — 0.1 — — Cash equivalents 3.2 — 3.2 — — — Total nuclear decommissioning trust 401.3 — 353.5 47.8 — — Self-insured health plan trust (c) Equity securities 2.0 — 2.0 — — — Debt securities 9.4 — 2.5 6.9 — — Cash and cash equivalents 4.3 — 4.3 — — — Total self-insured health plan trust 15.7 — 8.8 6.9 — — Derivative instruments - commodity contracts (b) Power — (2.1) — — 2.1 — Total derivative assets — (2.1) — — 2.1 — Total assets 417.0 (2.1) 362.3 54.7 2.1 — Liabilities Derivative instruments - commodity contracts (b) Power 3.6 (2.1) — — 5.7 — Total derivative liabilities 3.6 (2.1) — — 5.7 — Total liabilities $ 3.6 $ (2.1) $ — $ — $ 5.7 $ — Description December 31, 2023 Netting Level 1 Level 2 Level 3 NAV Other Evergy (millions) Assets Rabbi trusts Core bond fund $ 8.8 $ — $ 8.8 $ — $ — $ — Total rabbi trusts 8.8 — 8.8 — — — Derivative instruments - commodity contracts (b) Power 1.8 (1.0) — — 2.8 — Total derivative assets 1.8 (1.0) — — 2.8 — Total assets 10.6 (1.0) 8.8 — 2.8 — Liabilities Derivative instruments - commodity contracts (b) Power — (1.0) — — 1.0 — Natural gas 1.1 — — 1.1 — — Total derivative liabilities 1.1 (1.0) — 1.1 1.0 — Total liabilities $ 1.1 $ (1.0) $ — $ 1.1 $ 1.0 $ — Evergy Assets Nuclear decommissioning trust (a) $ 766.4 $ — $ 653.7 $ 47.8 $ — $ 64.9 Rabbi trusts 33.3 — 33.3 — — — Self-insured health plan trust (c) 15.7 — 8.8 6.9 — — Derivative instruments - commodity contracts (b) Power 42.0 (16.9) 16.3 32.2 10.4 — Natural gas 0.7 (73.4) 72.7 1.4 — — Total derivative assets 42.7 (90.3) 89.0 33.6 10.4 — Total assets 858.1 (90.3) 784.8 88.3 10.4 64.9 Liabilities Derivative instruments - commodity contracts (b) Power 43.9 (10.0) 9.4 34.6 9.9 — Natural gas 1.5 (73.4) 72.6 2.3 — — Total derivative liabilities 45.4 (83.4) 82.0 36.9 9.9 — Total liabilities $ 45.4 $ (83.4) $ 82.0 $ 36.9 $ 9.9 $ — (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) Derivative instruments classified as Level 1 consist of exchange-traded derivative instruments with fair value based on quoted market prices. Derivative instruments classified as Level 2 consist of non-exchange traded derivative instruments with observable forward curves and option contracts priced with models using observable inputs. Derivative instruments classified as Level 3 consist of non-exchange traded derivative instruments for which observable market data is not available to corroborate the valuation inputs and TCRs valued at the most recent auction price in the SPP Integrated Marketplace. (c) 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. September 30, 2024 December 31, 2023 September 30, 2024 Fair Unfunded Fair Unfunded Redemption Length of Value Commitments Value Commitments Frequency Settlement Evergy Kansas Central (millions) Nuclear decommissioning trust: Domestic equity funds $ 9.1 $ 1.4 $ 9.8 $ 1.4 (a) (a) Alternative investments fund (b) 43.9 — 37.9 — Quarterly 65 days Real estate securities fund (b) 16.2 — 17.2 — Quarterly 65 days Total Evergy investments at NAV $ 69.2 $ 1.4 $ 64.9 $ 1.4 (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. All funds have begun to make distributions. (b) There is a holdback on final 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 Year to Date 2024 2023 2024 2023 Evergy (millions) Nuclear decommissioning trust - equity securities $ 39.9 $ (8.3) $ 92.2 $ 46.4 Nuclear decommissioning trust - debt securities 4.1 (3.4) 2.4 (2.6) Rabbi trusts - equity securities 1.8 (1.1) 2.1 0.6 Total $ 45.8 $ (12.8) $ 96.7 $ 44.4 Evergy Kansas Central Nuclear decommissioning trust - equity securities $ 19.9 $ 1.4 $ 40.4 $ 23.4 Rabbi trust - equity securities 1.3 (0.7) 1.8 0.8 Total $ 21.2 $ 0.7 $ 42.2 $ 24.2 Evergy Metro Nuclear decommissioning trust - equity securities $ 20.0 $ (9.7) $ 51.8 $ 23.0 Nuclear decommissioning trust - debt securities 4.1 (3.4) 2.4 (2.6) Total $ 24.1 $ (13.1) $ 54.2 $ 20.4

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	9 Months Ended
	Sep. 30, 2024
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 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. Mercury and Air Toxics Standards (MATS) In April 2024, the EPA finalized a rule to tighten certain aspects of the MATS rule. The EPA is lowering the emission limit for particulate matter (PM), requiring the use of PM continuous emissions monitors (CEMS) and lowering the mercury emission limit for lignite coal-fired electric generating units (EGUs). The Evergy Companies' cost to comply is not expected to be material. Ozone Interstate Transport State Implementation Plans (ITSIP) In 2015, the EPA lowered the Ozone National Ambient Air Quality Standards (NAAQS) from 75 ppb to 70 ppb. Impacted states were required to submit ITSIPs in 2018 to comply with the "Good Neighbor Provision" of the Clean Air Act (CAA). The EPA did not act on these ITSIP submissions by the deadline established in the CAA and entered consent decrees establishing deadlines to take final action on various ITSIPs. In February 2022, the EPA published a proposed rule to disapprove the ITSIPs submitted by nineteen states including Missouri and Oklahoma. In April 2022, the EPA published an approval of the Kansas ITSIP in the Federal Register. The Missouri Department of Natural Resources (MDNR) submitted a supplemental ITSIP to the EPA in November 2022. In February 2023, the EPA published a final rule disapproving the ITSIPs submitted by nineteen states, including the final disapproval of the Missouri and Oklahoma ITSIPs. In April 2023, the Attorneys General of Missouri and Oklahoma filed Petitions for Review in the U.S. Court of Appeals for the Eighth Circuit (Eighth Circuit) and the U.S. Court of Appeals for the Tenth Circuit (Tenth Circuit), respectively, challenging the EPA's disapproval. In May 2023, the Eighth Circuit granted a stay of the EPA's disapproval of the Missouri ITSIP. Similarly, in July 2023, the Tenth Circuit granted a stay of the EPA's disapproval of the Oklahoma ITSIP. In August 2024, the EPA published in the Federal Register a proposed rule to disapprove the supplemental ITSIP that Missouri submitted in November 2022. Due to uncertainty regarding the stays of the EPA's disapprovals of the Missouri and Oklahoma ITSIPs, the Evergy Companies are unable to accurately assess the impact on their operations or consolidated financial results, but the cost to comply could be material. In January 2024, the EPA proposed to disapprove the ITSIP for Kansas and four other states. The Kansas ITSIP was previously approved in April 2022. The impact of the EPA's disapproval of the Kansas ITSIP could have a material impact on the Evergy Companies' operations. Ozone Interstate Transport Federal Implementation Plans (ITFIP) In April 2022, the EPA published in the Federal Register the proposed ITFIP to resolve outstanding "Good Neighbor" obligations with respect to the 2015 Ozone NAAQS for twenty-six states including Missouri and Oklahoma. This ITFIP would establish a revised Cross-State Air Pollution Rule (CSAPR) ozone season nitrogen oxide (NOx) emissions trading program for EGUs beginning in 2023 and would limit ozone season NOx emissions from certain industrial stationary sources beginning in 2026. The proposed rule would also establish a new daily backstop NOx emissions rate limit for applicable coal-fired units larger than 100 MW, as well as unit-specific NOx emission rate limits for certain industrial emission units and would feature "dynamic" adjustments of emission budgets for EGUs beginning with ozone season 2025. The proposed ITFIP included reductions to the state ozone season NOx budgets for Missouri and Oklahoma beginning in 2023 with additional reductions in future years. The Evergy Companies provided formal comments as part of the rulemaking process. In March 2023, the EPA issued the final ITFIPs for twenty-three states, including Missouri and Oklahoma, which included reduced ozone season NOx budgets for EGUs in Missouri, Oklahoma and other states, and included other features and requirements that were in the proposed version of the rule. Because the EPA's authority to impose an ITFIP for a state is triggered by the state's failure to submit an ITSIP addressing NAAQS by the statutory deadline or disapproval of an ITSIP, the EPA lacks authority under the Clean Air Act to impose an ITFIP on a state for which state implementation plan (SIP) disapprovals have been stayed by the courts. Accordingly, the EPA issued interim final rules staying the effectiveness of the ITFIP in both Missouri and Oklahoma while the stays issued by the Eighth and Tenth Circuits in the ITSIP disapproval cases remain in place. During this time, both states will continue to operate under the existing CSAPR program. While Kansas was not originally included in the ITFIP, in January 2024, the EPA issued a proposal to include Kansas in the ITFIP. If finalized, the ITFIP for Kansas would become effective for the 2025 ozone season beginning in May 2025. In June 2024, the U.S. Supreme Court issued an order granting emergency motions for stay filed by state and industry petitioners of the final ITFIP pending further review of the ITFIP by the U.S. Court of Appeals for the D.C. Circuit (D.C. Circuit). If the ITFIP ultimately takes effect for Missouri, Kansas and Oklahoma following the pending litigation, the impact on the Evergy Companies' operations and the cost to comply could be material. Particulate Matter National Ambient Air Quality Standards In March 2024, the EPA published in the Federal Register the final rule which strengthens the primary annual PM 2.5 (particulate matter less than 2.5 microns in diameter) NAAQS. The EPA is lowering the primary annual PM 2.5 NAAQS from 12.0 µg/m3 (micrograms per cubic meter) to 9.0 µg/m3. The final rule took effect in May 2024. In August 2024, the EPA released the PM 2.5 ambient monitor design values for calendar years 2021 through 2023. These design values will be used by each state governor for recommending to the EPA attainment designations for their states. The design values for several monitors in Kansas are currently above the PM 2.5 NAAQS which could result in areas of Kansas and adjacent portions of Missouri being designated nonattainment. The Evergy Companies are in the process of reviewing these design values; however, due to the uncertainty of the attainment status of portions of the service territory, the Evergy Companies are unable to accurately assess the impacts on their operations or consolidated financial results, but the cost to comply with lower PM 2.5 NAAQS could be material. Regional Haze Rule In 1999, the EPA finalized the Regional Haze Rule which aims to restore national parks and wilderness areas to pristine conditions. The rule requires states in coordination with the EPA, the National Park Service, the U.S. Fish and Wildlife Service, the U.S. Forest Service, and other interested parties to develop and implement air quality protection plans to reduce the pollution that causes visibility impairment. There are 156 "Class I" areas across the U.S. that must be restored to pristine conditions by the year 2064. There are no Class I areas in Kansas, whereas Missouri has two: the Hercules-Glades Wilderness Area and the Mingo Wilderness Area. States must submit revisions to their Regional Haze Rule SIPs every ten years and the first round was due in 2007. For the second ten-year implementation period, the EPA issued a final rule revision in 2017 that allowed states to submit their SIP revisions by July 2021. The Missouri SIP revision does not require any additional reductions from the Evergy Companies' generating units in the state. MDNR submitted the Missouri SIP revision to the EPA in August 2022, however, they failed to do so by the EPA's revised submittal deadline in August 2022. As a result, in August 2022, the EPA published "finding of failure" with respect to Missouri and fourteen other states for failing to submit their Regional Haze SIP revisions by the applicable deadline. This finding of failure established a two-year deadline for the EPA to issue a Regional Haze federal implementation plan (FIP) for each state unless the state submits and the EPA approves a revised SIP that meets all applicable requirements before the EPA issues the FIP. In July 2024, the EPA published in the Federal Register a proposal to partially approve and partially disapprove Missouri's Regional Haze SIP revision. The Kansas SIP revision requested no additional emission reductions by electric utilities based on the significant reductions that were achieved during the first implementation period. The Kansas Department of Health and Environment (KDHE) submitted the Kansas SIP revision in July 2021. In August 2024, the EPA issued the final disapproval of the Kansas SIP revision for failing to conduct a four-factor analysis for at least two emission sources in Kansas. If a Kansas generating unit of the Evergy Companies is selected for analysis, the possibility exists that the state or the EPA, through a revised SIP or a FIP, could determine that additional operational or physical modifications are required on the generating unit to further reduce emissions. If a Kansas or Missouri revised SIP or FIP is finalized, the overall costs of implementing the proposed rules could be material to the Evergy Companies. Greenhouse Gases Burning coal and other fossil fuels releases carbon dioxide (CO 2 ) and other gases referred to as greenhouse gases (GHG). Various regulations under the CAA limit CO 2 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 April 2024, the EPA finalized the GHG regulations and GHG guidelines that apply to new and existing fossil fuel fired EGUs. The final GHG regulation establishes CO 2 limitations on emissions from new and reconstructed stationary combustion turbines. The GHG guidelines set CO 2 emission limitations for existing coal, oil and gas-fired steam generating units. For new and reconstructed stationary combustion turbines, the emission limitations were developed by applying the Best System of Emission Reduction (BSER) to three distinct subcategories (low load, intermediate load and base load) taking into consideration the annual capacity factor of the stationary combustion turbine. For intermediate and base load stationary combustion turbines, BSER is assumed to be the utilization of highly efficient combustion turbine technology. Base load stationary combustion turbines are also required to consider the emissions reduction associated with the application of carbon capture and sequestration (CCS) beginning in 2032. For existing coal-fired EGUs, the emission limitations were established by applying the BSER to two subcategories (medium and long-term). For medium-term existing coal-fired units, which are units retiring between 2032 and 2038, the BSER established emission limitation is based on co-firing natural gas beginning in 2030. For units operating in 2039 and after, BSER is the application of CCS starting in 2032. In July 2024, the D.C. Circuit denied motions of stay filed by various states, industry and trade organizations; however, the D.C. Circuit has ordered expedited review of the challenges to the final regulations and guidelines. Also, in July 2024, various states, industry and trade organizations filed an application for emergency stay with the U.S. Supreme Court. The U.S. Supreme Court issued an order in October 2024 denying the applications and leaving the rule in place while challenges to the merits of the rule proceed in the D.C. Circuit. Due to uncertainty regarding the implementation of these final rules and ongoing judicial review, the Evergy Companies are unable to accurately assess the impacts on their operations or consolidated financial results, but the cost to comply could be material. Water The Evergy Companies discharge some of the water used in generation and other operations containing substances deemed to be pollutants. In April 2024, the EPA finalized an update to the Effluent Limitation Guidelines (ELG) for steam electric power generating facilities to address the vacated limitations and prior reviews of the existing rule by the current administration. Flue Gas Desulfurization (FGD) wastewater, bottom ash transport wastewater (BATW), coal residual leachate (CRL), and legacy wastewater are addressed in the rulemaking. FGD, BATW and CRL at operating facilities are required to achieve zero liquid discharge as soon as feasible and no later than December 2029. The Evergy Companies have reviewed the modifications to limitations on FGD wastewater and bottom ash transport water and the Evergy Companies do not believe the impact to be material. The Evergy Companies are reviewing the limitations on CRL, its impact on their operations and financial results and believe the cost to comply will not be material. In June 2024, multiple legal challenges to the ELG were consolidated in the Eighth Circuit that could impact the timing or cost to comply. Regulation of CCRs In the course of operating their coal generation plants, the Evergy Companies produce CCRs, including fly ash, gypsum and bottom ash. The EPA published a rule to regulate CCRs in April 2015 that requires additional CCR handling, processing and storage equipment and closure of certain ash disposal units. In January 2022, the EPA published proposed determinations for facilities that filed closure extensions for unlined or clay-lined CCR units. These proposed determinations include various interpretations of the CCR regulations and compliance expectations that may impact all owners of CCR units. These interpretations could require modified compliance plans such as different methods of CCR unit closure. Additionally, more stringent remediation requirements for units that are in corrective action or forced to go into corrective action are possible. In April 2022, the Utility Solid Waste Activities Group (USWAG) and other interested parties filed similar petitions in the D.C. Circuit challenging the EPA's legal positions regarding the CCR rule determinations proposed in January 2022. In June 2024, the D.C. Circuit dismissed these cases for lack of jurisdiction. Additional legal challenges on issues associated with the January 2022 determinations are expected. The cost to comply with these proposed determinations by the EPA could be material. In April 2024, the EPA finalized an expansion to the CCR regulations focused on legacy surface impoundments and historic placements of CCR. This regulation expands applicability of the 2015 CCR regulation to inactive landfills and beneficial use sites not previously regulated.

RELATED PARTY TRANSACTIONS AND

RELATED PARTY TRANSACTIONS AND RELATIONSHIPS	9 Months Ended
	Sep. 30, 2024
Related Party Transactions [Abstract]
RELATED PARTY TRANSACTIONS AND RELATIONSHIPS	RELATED PARTY TRANSACTIONS AND RELATIONSHIPS In the normal course of business, Evergy Kansas Central, Evergy Metro and Evergy Missouri West engage in related party transactions with one another. In addition, Evergy Kansas Central, Evergy Metro and Evergy Missouri West plan to engage in the construction of additional jointly-owned generation facilities. See Note 1 for a discussion of future planned investments. A summary of these related party 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 Year to Date 2024 2023 2024 2023 (millions) Evergy Kansas Central billings to Evergy Missouri West $ 7.0 $ 8.0 $ 24.5 $ 24.1 Evergy Metro billings to Evergy Missouri West 24.9 29.7 84.4 86.9 Evergy Kansas Central billings to Evergy Metro 11.2 10.8 34.8 33.7 Evergy Metro billings to Evergy Kansas Central 33.9 32.6 99.1 93.2 Related Party Net Receivables and Payables The following table summarizes Evergy Kansas Central's and Evergy Metro's related party net receivables and payables. September 30 December 31 2024 2023 Evergy Kansas Central (millions) Net payable to Evergy $ (13.2) $ (274.5) Net payable to Evergy Metro (18.5) (19.6) Net receivable from Evergy Missouri West 11.6 11.3 Evergy Metro Net receivable from Evergy $ 16.0 $ 15.9 Net receivable from Evergy Kansas Central 18.5 19.6 Net receivable from Evergy Missouri West 81.7 91.9 Money Pool Evergy Kansas Central, Evergy Metro and Evergy Missouri West are authorized to participate in the Evergy, Inc. money pool, which is an internal financing arrangement in which funds may be lent on a short-term basis between Evergy Kansas Central, Evergy Metro, Evergy Missouri West and Evergy, Inc. Evergy, Inc. can lend but not borrow under the money pool. As of September 30, 2024, Evergy Kansas Central and Evergy Metro had no outstanding receivables or payables under the money pool. As of December 31, 2023, Evergy Kansas Central had a $261.4 million outstanding payable to Evergy, Inc. under the money pool. As of December 31, 2023, Evergy Metro had no outstanding receivables or payables under the money pool. 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. September 30 December 31 2024 2023 Evergy Kansas Central (millions) Income taxes receivable from Evergy $ 32.1 $ 11.5 Evergy Metro Income taxes payable to Evergy $ (22.3) $ (6.8)

SHAREHOLDERS' EQUITY

SHAREHOLDERS' EQUITY	9 Months Ended
	Sep. 30, 2024
Stockholders' Equity Note [Abstract]
SHAREHOLDERS' EQUITY	SHAREHOLDERS' EQUITY Evergy Registration Statements

VARIABLE INTEREST ENTITIES

VARIABLE INTEREST ENTITIES	9 Months Ended
	Sep. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
VARIABLE INTEREST ENTITIES	VARIABLE INTEREST ENTITIES In determining the primary beneficiary of a VIE, the Evergy Companies assess the entity's purpose and design, including the nature of the entity's activities and the risks that the entity was designed to create and pass through to its variable interest holders. A reporting enterprise is deemed to be the primary beneficiary of a VIE if it has (a) the power to direct the activities of the VIE that most significantly impact the VIE's economic performance and (b) the obligation to absorb losses or right to receive benefits from the VIE that could potentially be significant to the VIE. The primary beneficiary of a VIE is required to consolidate the VIE. All involvement with entities by the Evergy Companies is assessed to determine whether such entities are VIEs and, if so, whether or not the Evergy Companies are the primary beneficiaries of the entities. The Evergy Companies also continuously assess whether they are the primary beneficiary of the VIE with which they are involved. Prospective changes in facts and circumstances may cause identification of the primary beneficiary to be reconsidered. Evergy Missouri West Storm Funding In 2022, Evergy Missouri West created Evergy Missouri West Storm Funding solely for the purpose of recovering extraordinary fuel and purchased power costs incurred as part of the February 2021 winter weather event. In February 2024, Evergy Missouri West Storm Funding issued, at a discount, $331.1 million of 5.10% Securitized Bonds with a final payment scheduled for 2038, maturing in 2040. The obligations of Evergy Missouri West Storm Funding's Securitized Bonds are repaid through charges imposed on customers in Evergy Missouri West's service territory and collected by Evergy Missouri West on behalf of Evergy Missouri West Storm Funding. Creditors of Evergy Missouri West have no recourse to any assets or revenues of Evergy Missouri West Storm Funding, and the bondholders have no recourse to the general credit of Evergy Missouri West. See Note 4 for additional information regarding the February 2021 winter weather event securitization. Evergy Missouri West Storm Funding is considered a VIE. Evergy Missouri West is the primary beneficiary of the VIE primarily because, as described above, Evergy Missouri West has the power to direct the activities of Evergy Missouri West Storm Funding that most significantly impact economic performance and Evergy Missouri West has the obligation to absorb losses or the right to receive benefits from Evergy Missouri West Storm Funding that could potentially be significant. Therefore, Evergy Missouri West consolidates Evergy Missouri West Storm Funding. The following table summarizes the impact of Evergy Missouri West Storm Funding on Evergy's consolidated balance sheet as of September 30, 2024. There was no impact on Evergy's consolidated balance sheet as of December 31, 2023. September 30 2024 Evergy (millions) Current assets Regulatory assets $ 15.6 Other 19.7 Other assets Regulatory assets 298.6 Other 1.7 Current liabilities Current maturities of long-term debt 19.5 Accrued interest 10.2 Long-term liabilities Long-term debt, net 303.8

TAXES

TAXES	9 Months Ended
	Sep. 30, 2024
Income Tax Disclosure [Abstract]
TAXES	TAXES Components of income tax expense are detailed in the following tables. Evergy Three Months Ended Year to Date 2024 2023 2024 2023 Current income taxes (millions) Federal $ (3.8) $ (17.3) $ 7.1 $ (6.7) State (13.9) 8.2 3.4 20.1 Total (17.7) (9.1) 10.5 13.4 Deferred income taxes Federal 47.8 25.7 52.0 38.9 State (8.3) (5.9) (22.4) (14.8) Total 39.5 19.8 29.6 24.1 Investment tax credit Deferral — 2.8 — 2.8 Amortization (1.8) (4.7) (5.4) (8.3) Total (1.8) (1.9) (5.4) (5.5) Income tax expense $ 20.0 $ 8.8 $ 34.7 $ 32.0 Evergy Kansas Central Three Months Ended Year to Date 2024 2023 2024 2023 Current income taxes (millions) Federal $ (30.5) $ (7.0) $ (16.0) $ 14.5 State (3.6) 3.0 3.7 7.9 Total (34.1) (4.0) (12.3) 22.4 Deferred income taxes Federal 45.9 (1.1) 35.7 (11.8) State (2.8) (1.8) (7.5) (4.1) Total 43.1 (2.9) 28.2 (15.9) Investment tax credit Deferral — 2.9 — 2.9 Amortization (1.0) (3.9) (2.9) (5.8) Total (1.0) (1.0) (2.9) (2.9) Income tax expense (benefit) $ 8.0 $ (7.9) $ 13.0 $ 3.6 Evergy Metro Three Months Ended Year to Date 2024 2023 2024 2023 Current income taxes (millions) Federal $ 28.5 $ 0.1 $ 34.4 $ (1.7) State (5.3) 3.7 1.9 8.9 Total 23.2 3.8 36.3 7.2 Deferred income taxes Federal 7.4 23.0 18.2 43.5 State (3.4) (2.2) (9.6) (5.8) Total 4.0 20.8 8.6 37.7 Investment tax credit amortization (0.8) (0.9) (2.4) (2.6) Income tax expense $ 26.4 $ 23.7 $ 42.5 $ 42.3 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 Year to Date 2024 2023 2024 2023 Federal statutory income tax 21.0 % 21.0 % 21.0 % 21.0 % COLI policies (1.2) (1.8) (1.2) (1.6) State income taxes (3.7) (0.5) (1.9) (0.2) Flow through depreciation for plant-related differences (4.3) (9.9) (6.1) (8.7) Federal tax credits (6.8) (6.7) (6.7) (5.9) Non-controlling interest (0.3) (0.4) (0.3) (0.3) AFUDC equity (0.4) 0.2 (0.4) (0.2) Amortization of federal investment tax credits (0.6) (0.8) (0.6) (0.7) Valuation allowance — 1.0 — 0.6 Officer compensation limitation 0.1 0.3 0.1 0.3 Other 0.3 — 0.3 0.2 Effective income tax rate 4.1 % 2.4 % 4.2 % 4.5 % Evergy Kansas Central Three Months Ended Year to Date 2024 2023 2024 2023 Federal statutory income tax 21.0 % 21.0 % 21.0 % 21.0 % COLI policies (1.9) (4.3) (1.9) (3.1) State income taxes (2.1) (2.3) (0.8) (0.5) Flow through depreciation for plant-related differences (2.5) (6.2) (4.0) (4.5) Federal tax credits (10.2) (16.3) (10.4) (11.7) Non-controlling interest (0.4) (0.9) (0.4) (0.7) AFUDC equity (0.5) 0.3 (0.5) (0.2) Amortization of federal investment tax credits (0.4) (0.8) (0.4) (0.6) Valuation allowance — 2.8 — 1.1 Other 0.1 0.4 — 0.3 Effective income tax rate 3.1 % (6.3) % 2.6 % 1.1 % Evergy Metro Three Months Ended Year to Date 2024 2023 2024 2023 Federal statutory income tax 21.0 % 21.0 % 21.0 % 21.0 % COLI policies (0.1) (0.1) (0.1) (0.1) State income taxes (3.3) 0.6 (1.8) 0.7 Flow through depreciation for plant-related differences (3.6) (8.7) (5.2) (8.5) Federal tax credits (0.7) (0.3) (0.7) (0.2) AFUDC equity (0.3) 0.2 (0.2) (0.3) Amortization of federal investment tax credits (0.8) (0.9) (0.8) (0.9) Stock compensation — — 0.2 0.2 Officer compensation limitation 0.3 0.5 0.3 0.5 Other — (0.1) — (0.1) Effective income tax rate 12.5 % 12.2 % 12.7 % 12.3 %

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ 465.6	$ 351.6	$ 795.3	$ 673.3

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

ORGANIZATION AND BASIS OF PRE_2

ORGANIZATION AND BASIS OF PRESENTATION (Policies)	9 Months Ended
	Sep. 30, 2024
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 2023 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 the variable interest entities (VIE) of which Evergy and Evergy Kansas Central are the primary beneficiaries. 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).
Cash and Cash Equivalents	Cash, Cash Equivalents and Restricted Cash Cash equivalents consist of highly liquid investments with original maturities of three months or less at acquisition. Evergy has restricted cash included in Other Current Assets and Other Non-current Assets on Evergy's consolidated balance sheet to facilitate the servicing of Evergy Missouri West Storm Funding I, LLC's (Evergy Missouri West Storm Funding) debt and the funding requirements for a jointly-owned generation facility. See Note 15 for additional information on the VIE. The following table summarizes the cash, cash equivalents and restricted cash included on Evergy's consolidated balance sheet. September 30 December 31 Evergy (millions) Current assets Cash and cash equivalents $ 34.6 $ 27.7 Other 20.4 — Other assets Other 1.7 — Total cash, cash equivalents and restricted cash $ 56.7 $ 27.7
Fuel Inventory and Supplies	Fuel Inventory and Supplies
Earnings Per Share	Earnings Per Share To compute basic earnings per common share (EPS), Evergy divides net income attributable to Evergy, Inc. by the weighted average number of common shares outstanding. Diluted EPS includes the effect of issuable common shares resulting from restricted share units (RSUs), restricted stock, convertible notes and a warrant. Evergy computes the dilutive effects of potential issuances of common shares using the treasury stock method, the contingently issuable share method or the if-converted method, as applicable.

ORGANIZATION AND BASIS OF PRE_3

ORGANIZATION AND BASIS OF PRESENTATION (Tables)	9 Months Ended
	Sep. 30, 2024
Accounting Policies [Abstract]
Restrictions on Cash and Cash Equivalents	The following table summarizes the cash, cash equivalents and restricted cash included on Evergy's consolidated balance sheet. September 30 December 31 Evergy (millions) Current assets Cash and cash equivalents $ 34.6 $ 27.7 Other 20.4 — Other assets Other 1.7 — Total cash, cash equivalents and restricted cash $ 56.7 $ 27.7
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. September 30 December 31 Evergy (millions) Fuel inventory $ 232.6 $ 257.3 Supplies 586.3 518.9 Fuel inventory and supplies $ 818.9 $ 776.2 Evergy Kansas Central Fuel inventory $ 136.0 $ 138.6 Supplies 313.5 273.3 Fuel inventory and supplies $ 449.5 $ 411.9 Evergy Metro Fuel inventory $ 60.6 $ 81.5 Supplies 202.6 183.1 Fuel inventory and supplies $ 263.2 $ 264.6
Summary of Property, Plant and Equipment	The following tables summarize the property, plant and equipment of Evergy, Evergy Kansas Central and Evergy Metro. September 30, 2024 Evergy Evergy Kansas Central Evergy Metro (millions) Electric plant in service $ 35,925.4 $ 17,578.2 $ 13,318.7 Electric plant acquisition adjustment 742.9 724.9 — Accumulated depreciation (13,948.5) (6,792.6) (5,666.2) Plant in service, net 22,719.8 11,510.5 7,652.5 Construction work in progress 1,725.9 1,060.4 506.9 Nuclear fuel, net 167.0 83.2 83.8 Plant to be retired, net (b) 0.7 0.7 — Property, plant and equipment, net $ 24,613.4 $ 12,654.8 $ 8,243.2 December 31, 2023 Evergy Evergy Kansas Central Evergy Metro (millions) Electric plant in service (a) $ 34,558.1 $ 16,858.7 $ 13,005.5 Electric plant acquisition adjustment 724.9 724.9 — Accumulated depreciation (a) (13,301.6) (6,502.7) (5,404.9) Plant in service, net (a) 21,981.4 11,080.9 7,600.6 Construction work in progress 1,543.5 939.1 428.7 Nuclear fuel, net 203.0 101.1 101.9 Plant to be retired, net (b) 0.8 0.8 — Property, plant and equipment, net (a) $ 23,728.7 $ 12,121.9 $ 8,131.2 (a) As of September 30, 2024, Evergy and Evergy Kansas Central classified Property, Plant and Equipment of VIE, net as Property, Plant and Equipment, net. To conform with the current period presentation, amounts previously reported as Property, Plant and Equipment of VIE, net as of December 31, 2023, have been reclassified to Property, Plant and Equipment, net. (b) As of September 30, 2024 and December 31, 2023, 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 Year to Date 2024 2023 2024 2023 Evergy (millions) Non-service cost component of net benefit cost $ (3.6) $ (6.4) $ (12.8) $ (37.2) Corporate-owned life insurance (5.9) (5.9) (16.7) (16.6) Other (0.3) (0.5) (1.2) (1.3) Other expense $ (9.8) $ (12.8) $ (30.7) $ (55.1) Evergy Kansas Central Non-service cost component of net benefit cost $ 0.5 $ (4.5) $ 1.6 $ (12.7) Corporate-owned life insurance (5.6) (5.6) (16.0) (15.9) Other (0.1) (0.1) (0.3) (0.2) Other expense $ (5.2) $ (10.2) $ (14.7) $ (28.8) Evergy Metro Non-service cost component of net benefit cost $ (2.5) $ (0.1) $ (8.6) $ (18.0) Corporate-owned life insurance (0.3) (0.4) (0.7) (0.8) Other — — (0.7) (0.5) Other expense $ (2.8) $ (0.5) $ (10.0) $ (19.3)
Schedule of Earnings Per Share, Basic and Diluted	The following table reconciles Evergy's basic and diluted EPS. Three Months Ended Year to Date 2024 2023 2024 2023 Income (millions, except per share amounts) Net income $ 468.6 $ 354.6 $ 804.5 $ 682.5 Less: net income attributable to noncontrolling interests 3.0 3.0 9.2 9.2 Net income attributable to Evergy, Inc. $ 465.6 $ 351.6 $ 795.3 $ 673.3 Common Shares Outstanding Weighted average number of common shares outstanding - basic 230.3 230.1 230.3 230.0 Add: effect of dilutive securities 0.3 0.4 0.2 0.5 Diluted average number of common shares outstanding 230.6 230.5 230.5 230.5 Basic EPS $ 2.02 $ 1.53 $ 3.45 $ 2.93 Diluted EPS $ 2.02 $ 1.53 $ 3.45 $ 2.92
Supplemental Cash Flow Information	Supplemental Cash Flow Information Evergy Year to Date September 30 2024 2023 Cash paid for (received from): (millions) Interest, net of amount capitalized $ 361.6 $ 370.3 Income taxes, net of refunds 18.1 19.0 Right-of-use assets obtained in exchange for new operating lease liabilities 4.1 12.1 Right-of-use assets obtained in exchange for new finance lease liabilities 12.4 3.7 Non-cash investing transactions: Property, plant and equipment additions 178.7 171.4 Evergy Kansas Central Year to Date September 30 2024 2023 Cash paid for (received from): (millions) Interest, net of amount capitalized $ 160.6 $ 149.4 Income taxes, net of refunds 8.3 53.0 Right-of-use assets obtained in exchange for new operating lease liabilities 2.4 6.4 Right-of-use assets obtained in exchange for new finance lease liabilities 7.9 3.7 Non-cash investing transactions: Property, plant and equipment additions 116.6 85.1 Evergy Metro Year to Date September 30 2024 2023 Cash paid for (received from): (millions) Interest, net of amount capitalized $ 90.0 $ 82.2 Income taxes, net of refunds 21.3 (0.4) Right-of-use assets obtained in exchange for new operating lease liabilities 1.7 5.1 Right-of-use assets obtained in exchange for new finance lease liabilities 3.0 — Non-cash investing transactions: Property, plant and equipment additions 47.7 65.4

REVENUE (Tables)

REVENUE (Tables)	9 Months Ended
	Sep. 30, 2024
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	Evergy's, Evergy Kansas Central's and Evergy Metro's revenues disaggregated by customer class are summarized in the following tables. Evergy Three Months Ended Year to Date 2024 2023 2024 2023 Revenues (millions) Residential $ 730.8 $ 675.1 $ 1,746.5 $ 1,626.4 Commercial 615.2 528.6 1,533.7 1,419.3 Industrial 188.9 158.9 524.0 475.3 Other retail 10.9 11.6 33.0 31.8 Total electric retail $ 1,545.8 $ 1,374.2 $ 3,837.2 $ 3,552.8 Wholesale 114.7 148.3 259.0 301.8 Transmission 123.1 101.9 360.9 308.2 Industrial steam and other 6.5 7.1 20.7 24.6 Total revenue from contracts with customers $ 1,790.1 $ 1,631.5 $ 4,477.8 $ 4,187.4 Other 21.3 37.8 112.1 132.9 Operating revenues $ 1,811.4 $ 1,669.3 $ 4,589.9 $ 4,320.3 Evergy Kansas Central Three Months Ended Year to Date 2024 2023 2024 2023 Revenues (millions) Residential $ 331.8 $ 262.9 $ 779.8 $ 647.3 Commercial 261.0 196.5 652.9 555.3 Industrial 122.2 93.4 342.4 300.1 Other retail 6.8 5.7 18.9 12.5 Total electric retail $ 721.8 $ 558.5 $ 1,794.0 $ 1,515.2 Wholesale 79.1 106.3 194.9 232.7 Transmission 115.8 97.6 340.1 294.8 Other 0.9 0.4 2.7 2.1 Total revenue from contracts with customers $ 917.6 $ 762.8 $ 2,331.7 $ 2,044.8 Other (0.1) 10.5 6.3 46.7 Operating revenues $ 917.5 $ 773.3 $ 2,338.0 $ 2,091.5 Evergy Metro Three Months Ended Year to Date 2024 2023 2024 2023 Revenues (millions) Residential $ 252.0 $ 259.9 $ 592.9 $ 603.9 Commercial 254.1 232.9 610.3 606.1 Industrial 39.1 37.2 103.8 100.6 Other retail 2.4 3.4 7.9 9.5 Total electric retail $ 547.6 $ 533.4 $ 1,314.9 $ 1,320.1 Wholesale 33.0 43.4 64.8 80.7 Transmission 5.2 3.7 15.0 10.8 Other 1.3 0.9 3.8 3.3 Total revenue from contracts with customers $ 587.1 $ 581.4 $ 1,398.5 $ 1,414.9 Other 21.2 26.8 104.7 85.0 Operating revenues $ 608.3 $ 608.2 $ 1,503.2 $ 1,499.9

RECEIVABLES (Tables)

RECEIVABLES (Tables)	9 Months Ended
	Sep. 30, 2024
Receivables [Abstract]
Schedule of Receivables	The Evergy Companies' receivables are detailed in the following table. September 30 December 31 2024 2023 Evergy (millions) Customer accounts receivable - billed $ 22.2 $ 2.6 Customer accounts receivable - unbilled 199.1 109.1 Other receivables 179.4 169.4 Allowance for credit losses (13.9) (24.2) Total $ 386.8 $ 256.9 Evergy Kansas Central Customer accounts receivable - billed $ — $ — Customer accounts receivable - unbilled 86.0 39.9 Other receivables 134.9 143.5 Allowance for credit losses (6.2) (11.6) Total $ 214.7 $ 171.8 Evergy Metro Customer accounts receivable - billed $ — $ — Customer accounts receivable - unbilled 63.6 27.2 Other receivables 58.2 35.7 Allowance for credit losses (5.1) (7.9) Total $ 116.7 $ 55.0 September 30 December 31 2024 2023 (millions) Evergy $ 87.6 $ 61.5 Evergy Kansas Central 81.4 59.9 Evergy Metro 4.9 0.8 September 30 December 31 2024 2023 (millions) Evergy $ 425.0 $ 342.0 Evergy Kansas Central 215.0 166.0 Evergy Metro 160.0 126.0
Summary of Bad Debt Expense	The change in the Evergy Companies' allowance for credit losses is summarized in the following table. 2024 2023 Evergy (millions) Beginning balance January 1 $ 24.2 $ 31.4 Credit loss expense 4.9 7.4 Write-offs (24.1) (25.2) Recoveries of prior write-offs 8.9 7.9 Ending balance September 30 $ 13.9 $ 21.5 Evergy Kansas Central Beginning balance January 1 $ 11.6 $ 16.9 Credit loss expense 2.2 3.1 Write-offs (11.6) (13.6) Recoveries of prior write-offs 4.0 3.5 Ending balance September 30 $ 6.2 $ 9.9 Evergy Metro Beginning balance January 1 $ 7.9 $ 9.3 Credit loss expense 2.5 2.7 Write-offs (8.6) (7.8) Recoveries of prior write-offs 3.3 3.0 Ending balance September 30 $ 5.1 $ 7.2

ASSET RETIREMENT OBLIGATIONS (T

ASSET RETIREMENT OBLIGATIONS (Tables)	9 Months Ended
	Sep. 30, 2024
Asset Retirement Obligation Disclosure [Abstract]
Schedule of Change in Asset Retirement Obligation	The following table summarizes the change in the Evergy Companies' AROs for the periods ending September 30, 2024 and December 31, 2023. Evergy Evergy Kansas Central Evergy Metro 2024 2023 2024 2023 2024 2023 (millions) Beginning balance January 1 $ 1,203.1 $ 1,153.2 $ 599.3 $ 565.1 $ 460.4 $ 444.2 Additions 72.8 9.7 44.8 9.7 24.1 — Revision in timing and/or estimates — 3.2 — 1.6 — 1.6 Settlements (8.9) (21.8) (5.6) (9.8) (3.0) (8.6) Accretion 43.3 58.8 25.1 32.7 15.9 23.2 Ending balance $ 1,310.3 $ 1,203.1 $ 663.6 $ 599.3 $ 497.4 $ 460.4 Less: current portion (46.4) (40.3) (27.5) (22.2) (16.4) (16.0) Total noncurrent asset $ 1,263.9 $ 1,162.8 $ 636.1 $ 577.1 $ 481.0 $ 444.4

PENSION PLANS AND POST-RETIRE_2

PENSION PLANS AND POST-RETIREMENT BENEFITS (Tables)	9 Months Ended
	Sep. 30, 2024
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 September 30, 2024 Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Components of net periodic benefit costs (millions) Service cost $ 11.6 $ 4.8 $ 6.8 $ 0.5 $ 0.3 $ 0.2 Interest cost 22.4 11.4 10.7 2.6 1.2 1.2 Expected return on plan assets (21.7) (10.8) (10.9) (2.9) (1.4) (1.4) Prior service cost 0.5 0.5 — — — (0.1) Recognized net actuarial (gain) loss (4.3) 0.2 (4.4) (0.9) (0.5) (0.5) Net periodic benefit costs before regulatory adjustment and intercompany allocations 8.5 6.1 2.2 (0.7) (0.4) (0.6) Regulatory adjustment 5.3 (1.8) 6.9 — 0.2 (0.1) Intercompany allocations — (0.4) (0.5) — (0.1) 0.1 Net periodic benefit costs (income) $ 13.8 $ 3.9 $ 8.6 $ (0.7) $ (0.3) $ (0.6) Pension Benefits Post-Retirement Benefits Year to Date September 30, 2024 Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Components of net periodic benefit costs (millions) Service cost $ 34.6 $ 14.3 $ 20.3 $ 1.3 $ 0.7 $ 0.6 Interest cost 67.2 34.2 32.2 7.6 3.8 3.7 Expected return on plan assets (65.1) (32.3) (32.8) (8.6) (4.4) (4.1) Prior service cost 1.5 1.5 — — — (0.3) Recognized net actuarial (gain) loss (13.0) 0.6 (13.1) (2.9) (1.5) (1.4) Net periodic benefit costs before regulatory adjustment and intercompany allocations 25.2 18.3 6.6 (2.6) (1.4) (1.5) Regulatory adjustment 17.9 (5.0) 22.4 — 0.6 (0.3) Intercompany allocations — (1.4) (1.6) — (0.1) 0.4 Net periodic benefit costs (income) $ 43.1 $ 11.9 $ 27.4 $ (2.6) $ (0.9) $ (1.4) Pension Benefits Post-Retirement Benefits Three Months Ended September 30, 2023 Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Components of net periodic benefit costs (millions) Service cost $ 11.4 $ 4.7 $ 6.7 $ 0.5 $ 0.2 $ 0.3 Interest cost 22.9 11.6 11.0 2.7 1.6 1.4 Expected return on plan assets (21.9) (11.0) (10.9) (2.9) (1.7) (1.4) Prior service cost 0.4 0.5 — — — (0.1) Recognized net actuarial gain (4.8) (0.3) (4.3) (1.1) (0.5) (0.6) Settlement (gain) loss (1.7) 0.4 (2.1) — — — Net periodic benefit costs before regulatory adjustment and intercompany allocations 6.3 5.9 0.4 (0.8) (0.4) (0.4) Regulatory adjustment 14.4 6.8 7.3 (0.2) (0.6) 0.5 Intercompany allocations — (0.5) (0.3) — 0.1 — Net periodic benefit costs (income) $ 20.7 $ 12.2 $ 7.4 $ (1.0) $ (0.9) $ 0.1 Pension Benefits Post-Retirement Benefits Year to Date September 30, 2023 Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Components of net periodic benefit costs (millions) Service cost $ 34.6 $ 14.3 $ 20.3 $ 1.4 $ 0.7 $ 0.7 Interest cost 68.3 34.8 32.7 8.3 4.3 4.1 Expected return on plan assets (65.8) (33.2) (32.6) (8.9) (4.7) (4.2) Prior service cost 1.4 1.5 — — — (0.3) Recognized net actuarial gain (14.3) (1.0) (12.7) (3.2) (1.5) (1.6) Settlement (gain) loss (19.6) 1.0 (20.6) — — — Net periodic benefit costs before regulatory adjustment and intercompany allocations 4.6 17.4 (12.9) (2.4) (1.2) (1.3) Regulatory adjustment 69.9 21.1 48.3 (0.5) (1.8) 1.5 Intercompany allocations — (1.6) (0.8) — 0.2 — Net periodic benefit costs (income) $ 74.5 $ 36.9 $ 34.6 $ (2.9) $ (2.8) $ 0.2

SHORT-TERM BORROWINGS AND SHO_2

SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDIT (Tables)	9 Months Ended
	Sep. 30, 2024
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 September 30, 2024 and December 31, 2023. Amounts Drawn Master Credit Facility Commercial Paper Letters of Credit Cash Borrowings Available Borrowings Weighted Average Interest Rate on Short-Term Borrowings September 30, 2024 (millions) Evergy, Inc. $ 700.0 $ 483.2 $ 0.7 $ — $ 216.1 4.95% Evergy Kansas Central 950.0 691.7 1.0 — 257.3 5.08% Evergy Metro 450.0 71.9 1.0 — 377.1 4.94% Evergy Missouri West 400.0 176.0 — — 224.0 4.94% Evergy $ 2,500.0 $ 1,422.8 $ 2.7 $ — $ 1,074.5 December 31, 2023 Evergy, Inc. $ 300.0 $ — $ 0.7 $ — $ 299.3 —% Evergy Kansas Central 750.0 230.4 1.0 — 518.6 5.56% Evergy Metro 750.0 423.3 — — 326.7 5.58% Evergy Missouri West 700.0 298.1 — — 401.9 5.66% Evergy $ 2,500.0 $ 951.8 $ 1.7 $ — $ 1,546.5

Derivative Instruments (Tables)

Derivative Instruments (Tables)	9 Months Ended
	Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]	The gross notional contract amount by commodity type for derivative instruments is summarized in the following table. September 30 December 31 Non-hedging derivatives Notional volume unit of measure 2024 2023 Evergy (millions) Commodity contracts Power MWhs 77.3 52.9 Natural gas MMBtu 855.9 559.9 Evergy Kansas Central Commodity contracts Power MWhs 45.8 32.1 Natural gas MMBtu 855.9 558.7 Evergy Metro Commodity contracts Power MWhs 23.9 15.1
Fair value of open derivative positions, gross values before netting agreements and netting of cash collateral [Table Text Block]	The fair values of Evergy's open derivative positions and balance sheet classifications are summarized in the following tables. The fair values below are gross values before netting agreements and netting of cash collateral. September 30 December 31 Evergy 2024 2023 Non-hedging derivatives Balance sheet location Commodity contracts (millions) Power Other assets - current $ 22.0 $ 23.2 Other assets - long-term 36.6 35.7 Natural gas Other assets - current 38.1 68.1 Other assets - long-term 3.7 6.0 Total derivative assets $ 100.4 $ 133.0 Commodity contracts Power Other liabilities - current $ 11.4 $ 21.0 Other liabilities - long-term 34.5 32.9 Natural gas Other liabilities - current 38.4 68.1 Other liabilities - long-term 3.9 6.8 Total derivative liabilities $ 88.2 $ 128.8 September 30 December 31 Evergy Kansas Central 2024 2023 Non-hedging derivatives Balance sheet location Commodity contracts (millions) Power Other assets - current $ 9.9 $ 18.3 Other assets - long-term 36.6 35.7 Natural gas Other assets - current 38.1 68.1 Other assets - long-term 3.7 6.0 Total derivative assets $ 88.3 $ 128.1 Commodity contracts Power Other liabilities - current $ 9.2 $ 14.3 Other liabilities - long-term 34.5 32.9 Natural gas Other liabilities - current 38.4 67.0 Other liabilities - long-term 3.9 6.8 Total derivative liabilities $ 86.0 $ 121.0 September 30 December 31 Evergy Metro 2024 2023 Non-hedging derivatives Balance sheet location Commodity contracts (millions) Power Other assets - current $ 8.5 $ 2.1 Total derivative assets $ 8.5 $ 2.1 Commodity contracts Power Other liabilities - current $ 1.5 $ 5.7 Total derivative liabilities $ 1.5 $ 5.7
Offsetting Derivative Assets and Liabilities [Table Text Block]	The following tables present the line items on the Evergy Companies' consolidated balance sheets where derivative assets and liabilities are reported. The gross amounts offset in the tables below show the effect of master netting arrangements and include collateral posted to offset the net position. September 30, 2024 Evergy Evergy Kansas Central Evergy Metro Derivative Assets (millions) Current Gross amounts recognized $ 60.1 $ 48.0 $ 8.5 Gross amounts offset (45.1) (42.9) (1.5) Net amounts presented in other assets - current $ 15.0 $ 5.1 $ 7.0 Long-Term Gross amounts recognized $ 40.3 $ 40.3 $ — Gross amounts offset (11.7) (11.7) — Net amounts presented in other assets - long-term $ 28.6 $ 28.6 $ — Derivative Liabilities Current Gross amounts recognized $ 49.8 $ 47.6 $ 1.5 Gross amounts offset (46.0) (43.8) (1.5) Net amounts presented in other liabilities - current $ 3.8 $ 3.8 $ — Long-Term Gross amounts recognized $ 38.4 $ 38.4 $ — Gross amounts offset (3.7) (3.7) — Net amounts presented in other liabilities - long-term $ 34.7 $ 34.7 $ — December 31, 2023 Evergy Evergy Kansas Central Evergy Metro Derivative Assets (millions) Current Gross amounts recognized $ 91.3 $ 86.4 $ 2.1 Gross amounts offset (78.4) (75.3) (2.1) Net amounts presented in other assets - current $ 12.9 $ 11.1 $ — Long-Term Gross amounts recognized $ 41.7 $ 41.7 $ — Gross amounts offset (11.9) (11.9) — Net amounts presented in other assets - long-term $ 29.8 $ 29.8 $ — Derivative Liabilities Current Gross amounts recognized $ 89.1 $ 81.3 $ 5.7 Gross amounts offset (77.5) (74.4) (2.1) Net amounts presented in other liabilities - current $ 11.6 $ 6.9 $ 3.6 Long-Term Gross amounts recognized $ 39.7 $ 39.7 $ — Gross amounts offset (5.9) (5.9) — Net amounts presented in other liabilities - long-term $ 33.8 $ 33.8 $ —
Derivative Instruments, Gain (Loss) [Table Text Block]	The following table summarizes the amounts of gain (loss) recognized in income for the change in fair value of derivatives not designated as hedging instruments for the Evergy Companies. Three Months Ended Year to Date Location of gain (loss) Contract type 2024 2023 2024 2023 Evergy (millions) Operating revenues Commodity $ (10.8) $ 2.7 $ (20.7) $ 20.3 Total $ (10.8) $ 2.7 $ (20.7) $ 20.3 Evergy Kansas Central Operating revenues Commodity $ (10.8) $ 2.7 $ (20.7) $ 20.3 Total $ (10.8) $ 2.7 $ (20.7) $ 20.3

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	9 Months Ended
	Sep. 30, 2024
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 are summarized in the following table. September 30, 2024 December 31, 2023 Book Value Fair Value Book Value Fair Value Long-term debt (a) (millions) Evergy (b) $ 11,975.9 $ 11,529.8 $ 11,853.3 $ 11,044.9 Evergy Kansas Central 4,582.7 4,262.0 4,580.4 4,176.6 Evergy Metro 3,222.8 3,108.0 2,924.4 2,738.8 (a) Includes current maturities. (b) Book value as of September 30, 2024 and December 31, 2023, includes $82.9 million and $87.0 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.
Schedule of Fair Value of Assets and Liabilities	The following tables include balances of financial assets and liabilities measured at fair value on a recurring basis. Description September 30, 2024 Netting Level 1 Level 2 Level 3 NAV Evergy Kansas Central (millions) Assets Nuclear decommissioning trust (a) Domestic equity funds $ 151.3 $ — $ 142.2 $ — $ — $ 9.1 International equity funds 84.1 — 84.1 — — — Core bond fund 62.3 — 62.3 — — — High-yield bond fund 32.1 — 32.1 — — — Emerging markets bond fund 20.2 — 20.2 — — — Alternative investments fund 43.9 — — — — 43.9 Real estate securities fund 16.2 — — — — 16.2 Cash equivalents 0.6 — 0.6 — — — Total nuclear decommissioning trust 410.7 — 341.5 — — 69.2 Rabbi trust Fixed income funds 15.1 — 15.1 — — — Equity funds 7.4 — 7.4 — — — Combination debt/equity/other fund 1.7 — 1.7 — — — Cash equivalents 0.2 — 0.2 — — — Total rabbi trust 24.4 — 24.4 — — — Derivative instruments - commodity contracts (b) Power 32.1 (14.4) 10.4 32.8 3.3 — Natural gas 1.6 (40.2) 38.3 3.5 — — Total derivative assets 33.7 (54.6) 48.7 36.3 3.3 — Total assets 468.8 (54.6) 414.6 36.3 3.3 69.2 Liabilities Derivative instruments - commodity contracts (b) Power 36.4 (7.3) 4.0 36.7 3.0 — Natural gas 2.1 (40.2) 38.1 4.2 — — Total derivative liabilities 38.5 (47.5) 42.1 40.9 3.0 — Total liabilities $ 38.5 $ (47.5) $ 42.1 $ 40.9 $ 3.0 $ — Evergy Metro Assets Nuclear decommissioning trust (a) Equity securities $ 361.2 $ — $ 361.2 $ — $ — $ — Debt securities U.S. Treasury 55.4 — 55.4 — — — State and local obligations 2.2 — — 2.2 — — Corporate bonds 44.7 — — 44.7 — — Cash equivalents 3.2 — 3.2 — — — Total nuclear decommissioning trust 466.7 — 419.8 46.9 — — Self-insured health plan trust (c) Equity securities 1.7 — 1.7 — — — Debt securities 8.3 — 2.1 6.2 — — Cash and cash equivalents 3.9 — 3.9 — — — Total self-insured health plan trust 13.9 — 7.7 6.2 — — Derivative instruments - commodity contracts (b) Power 7.0 (1.5) — — 8.5 — Total derivative assets 7.0 (1.5) — — 8.5 — Total assets 487.6 (1.5) 427.5 53.1 8.5 — Liabilities Derivative instruments - commodity contracts (b) Power — (1.5) — — 1.5 — Total derivative liabilities — (1.5) — — 1.5 — Total liabilities $ — $ (1.5) $ — $ — $ 1.5 $ — Description September 30, 2024 Netting Level 1 Level 2 Level 3 NAV Other Evergy (millions) Assets Rabbi trusts Core bond fund $ 8.5 $ — $ 8.5 $ — $ — $ — Total rabbi trusts 8.5 — 8.5 — — — Derivative instruments - commodity contracts (b) Power 2.9 (0.7) — — 3.6 — Total derivative assets 2.9 (0.7) — — 3.6 — Total assets 11.4 (0.7) 8.5 — 3.6 — Liabilities Derivative instruments - commodity contracts (b) Power — (0.7) — — 0.7 — Total derivative liabilities — (0.7) — — 0.7 — Total liabilities $ — $ (0.7) $ — $ — $ 0.7 $ — Evergy Assets Nuclear decommissioning trust (a) $ 877.4 $ — $ 761.3 $ 46.9 $ — $ 69.2 Rabbi trusts 32.9 — 32.9 — — — Self-insured health plan trust (c) 13.9 — 7.7 6.2 — — Derivative instruments - commodity contracts (b) Power 42.0 (16.6) 10.4 32.8 15.4 — Natural gas 1.6 (40.2) 38.3 3.5 — — Total derivative assets 43.6 (56.8) 48.7 36.3 15.4 — Total assets 967.8 (56.8) 850.6 89.4 15.4 69.2 Liabilities Derivative instruments - commodity contracts (b) Power 36.4 (9.5) 4.0 36.7 5.2 — Natural gas 2.1 (40.2) 38.1 4.2 — — Total derivative liabilities 38.5 (49.7) 42.1 40.9 5.2 — Total liabilities $ 38.5 $ (49.7) $ 42.1 $ 40.9 $ 5.2 $ — Description December 31, 2023 Netting Level 1 Level 2 Level 3 NAV Evergy Kansas Central (millions) Assets Nuclear decommissioning trust (a) Domestic equity funds $ 133.1 $ — $ 123.3 $ — $ — $ 9.8 International equity funds 72.6 — 72.6 — — — Core bond fund 56.2 — 56.2 — — — High-yield bond fund 29.1 — 29.1 — — — Emerging markets bond fund 18.3 — 18.3 — — — Alternative investments fund 37.9 — — — — 37.9 Real estate securities fund 17.2 — — — — 17.2 Cash equivalents 0.7 — 0.7 — — — Total nuclear decommissioning trust 365.1 — 300.2 — — 64.9 Rabbi trust Fixed income funds 15.2 — 15.2 — — — Equity funds 7.4 — 7.4 — — — Combination debt/equity/other fund 1.7 — 1.7 — — — Cash equivalents 0.2 — 0.2 — — — Total rabbi trust 24.5 — 24.5 — — — Derivative instruments - commodity contracts (b) Power 40.2 (13.8) 16.3 32.2 5.5 — Natural gas 0.7 (73.4) 72.7 1.4 — — Total derivative assets 40.9 (87.2) 89.0 33.6 5.5 — Total assets 430.5 (87.2) 413.7 33.6 5.5 64.9 Liabilities Derivative instruments - commodity contracts (b) Power 40.3 (6.9) 9.4 34.6 3.2 — Natural gas 0.4 (73.4) 72.6 1.2 — — Total derivative liabilities 40.7 (80.3) 82.0 35.8 3.2 — Total liabilities $ 40.7 $ (80.3) $ 82.0 $ 35.8 $ 3.2 $ — Evergy Metro Assets Nuclear decommissioning trust (a) Equity securities $ 302.4 $ — $ 302.4 $ — $ — $ — Debt securities U.S. Treasury 47.9 — 47.9 — — — State and local obligations 3.8 — — 3.8 — — Corporate bonds 43.9 — — 43.9 — — Foreign governments 0.1 — — 0.1 — — Cash equivalents 3.2 — 3.2 — — — Total nuclear decommissioning trust 401.3 — 353.5 47.8 — — Self-insured health plan trust (c) Equity securities 2.0 — 2.0 — — — Debt securities 9.4 — 2.5 6.9 — — Cash and cash equivalents 4.3 — 4.3 — — — Total self-insured health plan trust 15.7 — 8.8 6.9 — — Derivative instruments - commodity contracts (b) Power — (2.1) — — 2.1 — Total derivative assets — (2.1) — — 2.1 — Total assets 417.0 (2.1) 362.3 54.7 2.1 — Liabilities Derivative instruments - commodity contracts (b) Power 3.6 (2.1) — — 5.7 — Total derivative liabilities 3.6 (2.1) — — 5.7 — Total liabilities $ 3.6 $ (2.1) $ — $ — $ 5.7 $ — Description December 31, 2023 Netting Level 1 Level 2 Level 3 NAV Other Evergy (millions) Assets Rabbi trusts Core bond fund $ 8.8 $ — $ 8.8 $ — $ — $ — Total rabbi trusts 8.8 — 8.8 — — — Derivative instruments - commodity contracts (b) Power 1.8 (1.0) — — 2.8 — Total derivative assets 1.8 (1.0) — — 2.8 — Total assets 10.6 (1.0) 8.8 — 2.8 — Liabilities Derivative instruments - commodity contracts (b) Power — (1.0) — — 1.0 — Natural gas 1.1 — — 1.1 — — Total derivative liabilities 1.1 (1.0) — 1.1 1.0 — Total liabilities $ 1.1 $ (1.0) $ — $ 1.1 $ 1.0 $ — Evergy Assets Nuclear decommissioning trust (a) $ 766.4 $ — $ 653.7 $ 47.8 $ — $ 64.9 Rabbi trusts 33.3 — 33.3 — — — Self-insured health plan trust (c) 15.7 — 8.8 6.9 — — Derivative instruments - commodity contracts (b) Power 42.0 (16.9) 16.3 32.2 10.4 — Natural gas 0.7 (73.4) 72.7 1.4 — — Total derivative assets 42.7 (90.3) 89.0 33.6 10.4 — Total assets 858.1 (90.3) 784.8 88.3 10.4 64.9 Liabilities Derivative instruments - commodity contracts (b) Power 43.9 (10.0) 9.4 34.6 9.9 — Natural gas 1.5 (73.4) 72.6 2.3 — — Total derivative liabilities 45.4 (83.4) 82.0 36.9 9.9 — Total liabilities $ 45.4 $ (83.4) $ 82.0 $ 36.9 $ 9.9 $ — (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) Derivative instruments classified as Level 1 consist of exchange-traded derivative instruments with fair value based on quoted market prices. Derivative instruments classified as Level 2 consist of non-exchange traded derivative instruments with observable forward curves and option contracts priced with models using observable inputs. Derivative instruments classified as Level 3 consist of non-exchange traded derivative instruments for which observable market data is not available to corroborate the valuation inputs and TCRs valued at the most recent auction price in the SPP Integrated Marketplace. (c) 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.
Schedule of Fair Value Investments, Entities that Calculate NAV	The following table provides additional information on these Evergy and Evergy Kansas Central investments. September 30, 2024 December 31, 2023 September 30, 2024 Fair Unfunded Fair Unfunded Redemption Length of Value Commitments Value Commitments Frequency Settlement Evergy Kansas Central (millions) Nuclear decommissioning trust: Domestic equity funds $ 9.1 $ 1.4 $ 9.8 $ 1.4 (a) (a) Alternative investments fund (b) 43.9 — 37.9 — Quarterly 65 days Real estate securities fund (b) 16.2 — 17.2 — Quarterly 65 days Total Evergy investments at NAV $ 69.2 $ 1.4 $ 64.9 $ 1.4 (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. All funds have begun to make distributions. (b)
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 Year to Date 2024 2023 2024 2023 Evergy (millions) Nuclear decommissioning trust - equity securities $ 39.9 $ (8.3) $ 92.2 $ 46.4 Nuclear decommissioning trust - debt securities 4.1 (3.4) 2.4 (2.6) Rabbi trusts - equity securities 1.8 (1.1) 2.1 0.6 Total $ 45.8 $ (12.8) $ 96.7 $ 44.4 Evergy Kansas Central Nuclear decommissioning trust - equity securities $ 19.9 $ 1.4 $ 40.4 $ 23.4 Rabbi trust - equity securities 1.3 (0.7) 1.8 0.8 Total $ 21.2 $ 0.7 $ 42.2 $ 24.2 Evergy Metro Nuclear decommissioning trust - equity securities $ 20.0 $ (9.7) $ 51.8 $ 23.0 Nuclear decommissioning trust - debt securities 4.1 (3.4) 2.4 (2.6) Total $ 24.1 $ (13.1) $ 54.2 $ 20.4

RELATED PARTY TRANSACTIONS AN_2

RELATED PARTY TRANSACTIONS AND RELATIONSHIPS (Tables)	9 Months Ended
	Sep. 30, 2024
Related Party Transactions [Abstract]
Schedule of Related Party Receivables and Payables	The operating expenses and capital costs billed for jointly-owned plants and shared services are detailed in the following table. Three Months Ended Year to Date 2024 2023 2024 2023 (millions) Evergy Kansas Central billings to Evergy Missouri West $ 7.0 $ 8.0 $ 24.5 $ 24.1 Evergy Metro billings to Evergy Missouri West 24.9 29.7 84.4 86.9 Evergy Kansas Central billings to Evergy Metro 11.2 10.8 34.8 33.7 Evergy Metro billings to Evergy Kansas Central 33.9 32.6 99.1 93.2 The following table summarizes Evergy Kansas Central's and Evergy Metro's related party net receivables and payables. September 30 December 31 2024 2023 Evergy Kansas Central (millions) Net payable to Evergy $ (13.2) $ (274.5) Net payable to Evergy Metro (18.5) (19.6) Net receivable from Evergy Missouri West 11.6 11.3 Evergy Metro Net receivable from Evergy $ 16.0 $ 15.9 Net receivable from Evergy Kansas Central 18.5 19.6 Net receivable from Evergy Missouri West 81.7 91.9 September 30 December 31 2024 2023 Evergy Kansas Central (millions) Income taxes receivable from Evergy $ 32.1 $ 11.5 Evergy Metro Income taxes payable to Evergy $ (22.3) $ (6.8)

VARIABLE INTEREST ENTITIES (Tab

VARIABLE INTEREST ENTITIES (Tables)	9 Months Ended
	Sep. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Variable Interest Entities	The following table summarizes the impact of Evergy Missouri West Storm Funding on Evergy's consolidated balance sheet as of September 30, 2024. There was no impact on Evergy's consolidated balance sheet as of December 31, 2023. September 30 2024 Evergy (millions) Current assets Regulatory assets $ 15.6 Other 19.7 Other assets Regulatory assets 298.6 Other 1.7 Current liabilities Current maturities of long-term debt 19.5 Accrued interest 10.2 Long-term liabilities Long-term debt, net 303.8

TAXES (Tables)

TAXES (Tables)	9 Months Ended
	Sep. 30, 2024
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 Year to Date 2024 2023 2024 2023 Current income taxes (millions) Federal $ (3.8) $ (17.3) $ 7.1 $ (6.7) State (13.9) 8.2 3.4 20.1 Total (17.7) (9.1) 10.5 13.4 Deferred income taxes Federal 47.8 25.7 52.0 38.9 State (8.3) (5.9) (22.4) (14.8) Total 39.5 19.8 29.6 24.1 Investment tax credit Deferral — 2.8 — 2.8 Amortization (1.8) (4.7) (5.4) (8.3) Total (1.8) (1.9) (5.4) (5.5) Income tax expense $ 20.0 $ 8.8 $ 34.7 $ 32.0 Evergy Kansas Central Three Months Ended Year to Date 2024 2023 2024 2023 Current income taxes (millions) Federal $ (30.5) $ (7.0) $ (16.0) $ 14.5 State (3.6) 3.0 3.7 7.9 Total (34.1) (4.0) (12.3) 22.4 Deferred income taxes Federal 45.9 (1.1) 35.7 (11.8) State (2.8) (1.8) (7.5) (4.1) Total 43.1 (2.9) 28.2 (15.9) Investment tax credit Deferral — 2.9 — 2.9 Amortization (1.0) (3.9) (2.9) (5.8) Total (1.0) (1.0) (2.9) (2.9) Income tax expense (benefit) $ 8.0 $ (7.9) $ 13.0 $ 3.6 Evergy Metro Three Months Ended Year to Date 2024 2023 2024 2023 Current income taxes (millions) Federal $ 28.5 $ 0.1 $ 34.4 $ (1.7) State (5.3) 3.7 1.9 8.9 Total 23.2 3.8 36.3 7.2 Deferred income taxes Federal 7.4 23.0 18.2 43.5 State (3.4) (2.2) (9.6) (5.8) Total 4.0 20.8 8.6 37.7 Investment tax credit amortization (0.8) (0.9) (2.4) (2.6) Income tax expense $ 26.4 $ 23.7 $ 42.5 $ 42.3
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 Year to Date 2024 2023 2024 2023 Federal statutory income tax 21.0 % 21.0 % 21.0 % 21.0 % COLI policies (1.2) (1.8) (1.2) (1.6) State income taxes (3.7) (0.5) (1.9) (0.2) Flow through depreciation for plant-related differences (4.3) (9.9) (6.1) (8.7) Federal tax credits (6.8) (6.7) (6.7) (5.9) Non-controlling interest (0.3) (0.4) (0.3) (0.3) AFUDC equity (0.4) 0.2 (0.4) (0.2) Amortization of federal investment tax credits (0.6) (0.8) (0.6) (0.7) Valuation allowance — 1.0 — 0.6 Officer compensation limitation 0.1 0.3 0.1 0.3 Other 0.3 — 0.3 0.2 Effective income tax rate 4.1 % 2.4 % 4.2 % 4.5 % Evergy Kansas Central Three Months Ended Year to Date 2024 2023 2024 2023 Federal statutory income tax 21.0 % 21.0 % 21.0 % 21.0 % COLI policies (1.9) (4.3) (1.9) (3.1) State income taxes (2.1) (2.3) (0.8) (0.5) Flow through depreciation for plant-related differences (2.5) (6.2) (4.0) (4.5) Federal tax credits (10.2) (16.3) (10.4) (11.7) Non-controlling interest (0.4) (0.9) (0.4) (0.7) AFUDC equity (0.5) 0.3 (0.5) (0.2) Amortization of federal investment tax credits (0.4) (0.8) (0.4) (0.6) Valuation allowance — 2.8 — 1.1 Other 0.1 0.4 — 0.3 Effective income tax rate 3.1 % (6.3) % 2.6 % 1.1 % Evergy Metro Three Months Ended Year to Date 2024 2023 2024 2023 Federal statutory income tax 21.0 % 21.0 % 21.0 % 21.0 % COLI policies (0.1) (0.1) (0.1) (0.1) State income taxes (3.3) 0.6 (1.8) 0.7 Flow through depreciation for plant-related differences (3.6) (8.7) (5.2) (8.5) Federal tax credits (0.7) (0.3) (0.7) (0.2) AFUDC equity (0.3) 0.2 (0.2) (0.3) Amortization of federal investment tax credits (0.8) (0.9) (0.8) (0.9) Stock compensation — — 0.2 0.2 Officer compensation limitation 0.3 0.5 0.3 0.5 Other — (0.1) — (0.1) Effective income tax rate 12.5 % 12.2 % 12.7 % 12.3 %

ORGANIZATION AND BASIS OF PRE_4

ORGANIZATION AND BASIS OF PRESENTATION - Organization (Details) customer in Millions, $ in Millions	1 Months Ended	9 Months Ended
	Apr. 30, 2024 USD ($) MW	Sep. 30, 2024 segment subsidiary kilovolt_line customer mi MW	Nov. 06, 2024 MW	Oct. 31, 2024 MW
Summary Of Accounting Policies [Line Items]
Owned generating capacity and renewable purchased power		15,800
Number of customers served | customer		1.7
Number of segments | segment		1
Plant to be constructed 1 | Subsequent Event
Summary Of Accounting Policies [Line Items]
ApproximateMWNameplateCapacity				705
Plant to be constructed 2 | Subsequent Event
Summary Of Accounting Policies [Line Items]
ApproximateMWNameplateCapacity				705
Kansas Sky solar plant to be constructed | Subsequent Event
Summary Of Accounting Policies [Line Items]
ApproximateMWNameplateCapacity			159
2024 Natural Gas Plant Purchase
Summary Of Accounting Policies [Line Items]
Jointly owned utility plant, proportionate ownership share	22%
ApproximateMWNameplateCapacity	145
Asset Acquisition, Consideration Transferred | $	$ 60
Dogwood costs recovery period	2 years
2024 Foxtrot Purchase [Member]
Summary Of Accounting Policies [Line Items]
ApproximateMWNameplateCapacity		100
2024 Sunflower Sky Purchase [Member]
Summary Of Accounting Policies [Line Items]
ApproximateMWNameplateCapacity		65
Prairie Wind Transmission, LLC
Summary Of Accounting Policies [Line Items]
Transmission line length | mi		108
Transmission line electrical potential | kilovolt_line		345
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%

ORGANIZATION AND BASIS OF PRE_5

ORGANIZATION AND BASIS OF PRESENTATION - Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2022
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents	$ 34.6	$ 27.7
Other	20.4	0
Other	1.7	0
Total cash, cash equivalents and restricted cash	56.7	$ 27.7	$ 41	$ 25.2
Variable Interest Entities
Restricted Cash and Cash Equivalents Items [Line Items]
Other	19.7
Other	$ 1.7

ORGANIZATION AND BASIS OF PRE_6

ORGANIZATION AND BASIS OF PRESENTATION - Fuel Inventory and Supplies (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Inventory [Line Items]
Fuel inventory	$ 232.6	$ 257.3
Supplies	586.3	518.9
Fuel inventory and supplies	818.9	776.2
Evergy Kansas Central
Inventory [Line Items]
Fuel inventory	136	138.6
Supplies	313.5	273.3
Fuel inventory and supplies	449.5	411.9
Evergy Metro
Inventory [Line Items]
Fuel inventory	60.6	81.5
Supplies	202.6	183.1
Fuel inventory and supplies	$ 263.2	$ 264.6

ORGANIZATION AND BASIS OF PRE_7

ORGANIZATION AND BASIS OF PRESENTATION - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 24,613.4	$ 23,728.7
Electric plant in service
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	35,925.4	34,558.1
Property, plant and equipment, adjustment	742.9	724.9
Accumulated depreciation	(13,948.5)	(13,301.6)
Property, plant and equipment, net	22,719.8	21,981.4
Construction work in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	1,725.9	1,543.5
Nuclear fuel, net
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	167	203
Plant to be retired, net
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	0.7	0.8
Evergy Kansas Central
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	12,654.8	12,121.9
Evergy Kansas Central | Electric plant in service
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	17,578.2	16,858.7
Property, plant and equipment, adjustment	724.9	724.9
Accumulated depreciation	(6,792.6)	(6,502.7)
Property, plant and equipment, net	11,510.5	11,080.9
Evergy Kansas Central | Construction work in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	1,060.4	939.1
Evergy Kansas Central | Nuclear fuel, net
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	83.2	101.1
Evergy Kansas Central | Plant to be retired, net
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	0.7	0.8
Evergy Metro
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	8,243.2	8,131.2
Evergy Metro | Electric plant in service
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	13,318.7	13,005.5
Property, plant and equipment, adjustment	0	0
Accumulated depreciation	(5,666.2)	(5,404.9)
Property, plant and equipment, net	7,652.5	7,600.6
Evergy Metro | Construction work in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	506.9	428.7
Evergy Metro | Nuclear fuel, net
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	83.8	101.9
Evergy Metro | Plant to be retired, net
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 0	$ 0

ORGANIZATION AND BASIS OF PRE_8

ORGANIZATION AND BASIS OF PRESENTATION - Other Income And Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Entity Information [Line Items]
Non-service cost component of net benefit cost	$ (3.6)	$ (6.4)	$ (12.8)	$ (37.2)
Corporate-owned life insurance	(5.9)	(5.9)	(16.7)	(16.6)
Other	(0.3)	(0.5)	(1.2)	(1.3)
Other expense	(9.8)	(12.8)	(30.7)	(55.1)
Evergy Kansas Central
Entity Information [Line Items]
Non-service cost component of net benefit cost	0.5	(4.5)	1.6	(12.7)
Corporate-owned life insurance	(5.6)	(5.6)	(16)	(15.9)
Other	(0.1)	(0.1)	(0.3)	(0.2)
Other expense	(5.2)	(10.2)	(14.7)	(28.8)
Evergy Metro
Entity Information [Line Items]
Non-service cost component of net benefit cost	(2.5)	(0.1)	(8.6)	(18)
Corporate-owned life insurance	(0.3)	(0.4)	(0.7)	(0.8)
Other	0	0	(0.7)	(0.5)
Other expense	$ (2.8)	$ (0.5)	$ (10)	$ (19.3)

ORGANIZATION AND BASIS OF PRE_9

ORGANIZATION AND BASIS OF PRESENTATION - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Income
Net income	$ 468.6	$ 210.1	$ 125.8	$ 354.6	$ 182.2	$ 145.7	$ 804.5	$ 682.5
Less: Net income attributable to noncontrolling interests	3			3			9.2	9.2
Net income attributable to Evergy, Inc.	$ 465.6			$ 351.6			$ 795.3	$ 673.3
Common Shares Outstanding
Weighted average equivalent common shares outstanding - basic (in shares)	230.3			230.1			230.3	230
Add: effect of dilutive securities (in shares)	0.3			0.4			0.2	0.5
Diluted average number of common shares outstanding (in shares)	230.6			230.5			230.5	230.5
Earnings Per Share, Basic	$ 2.02			$ 1.53			$ 3.45	$ 2.93
Earnings Per Share, Diluted	$ 2.02			$ 1.53			$ 3.45	$ 2.92

ORGANIZATION AND BASIS OF PR_10

ORGANIZATION AND BASIS OF PRESENTATION - Antidilutive Securities (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Maximum
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	0		0
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		3,950,000
Convertible note
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	0	0	0	0

ORGANIZATION AND BASIS OF PR_11

ORGANIZATION AND BASIS OF PRESENTATION - Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
	Nov. 06, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023
Dividends Payable [Line Items]
Dividends declared on common stock (in dollars per share)		$ 0.6425	$ 0.6425	$ 0.6425	$ 0.6125	$ 0.6125	$ 0.6125
Subsequent Event
Dividends Payable [Line Items]
Dividends declared on common stock (in dollars per share)	$ 0.6675
Subsequent Event | Evergy Kansas Central
Dividends Payable [Line Items]
Dividends payable	$ 110
Subsequent Event | Evergy Metro
Dividends Payable [Line Items]
Dividends payable	$ 110

ORGANIZATION AND BASIS OF PR_12

ORGANIZATION AND BASIS OF PRESENTATION - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash paid for (received from):
Interest, net of amount capitalized	$ 361.6	$ 370.3
Income taxes, net of refunds	18.1	19
Right-of-use assets obtained in exchange for new operating lease liabilities	4.1	12.1
Right-of-use assets obtained in exchange for new finance lease liabilities	12.4	3.7
Non-cash investing transactions:
Property, plant and equipment additions	178.7	171.4
Evergy Kansas Central
Cash paid for (received from):
Interest, net of amount capitalized	160.6	149.4
Income taxes, net of refunds	8.3	53
Right-of-use assets obtained in exchange for new operating lease liabilities	2.4	6.4
Right-of-use assets obtained in exchange for new finance lease liabilities	7.9	3.7
Non-cash investing transactions:
Property, plant and equipment additions	116.6	85.1
Evergy Metro
Cash paid for (received from):
Interest, net of amount capitalized	90	82.2
Income taxes, net of refunds	21.3	(0.4)
Right-of-use assets obtained in exchange for new operating lease liabilities	1.7	5.1
Right-of-use assets obtained in exchange for new finance lease liabilities	3	0
Non-cash investing transactions:
Property, plant and equipment additions	$ 47.7	$ 65.4

REVENUE (Details)

REVENUE (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 1,790.1	$ 1,631.5	$ 4,477.8	$ 4,187.4
Other	21.3	37.8	112.1	132.9
Revenues	1,811.4	1,669.3	4,589.9	4,320.3
Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	917.6	762.8	2,331.7	2,044.8
Other	(0.1)	10.5	6.3	46.7
Revenues	917.5	773.3	2,338	2,091.5
Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	587.1	581.4	1,398.5	1,414.9
Other	21.2	26.8	104.7	85
Revenues	608.3	608.2	1,503.2	1,499.9
Residential
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	730.8	675.1	1,746.5	1,626.4
Residential | Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	331.8	262.9	779.8	647.3
Residential | Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	252	259.9	592.9	603.9
Commercial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	615.2	528.6	1,533.7	1,419.3
Commercial | Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	261	196.5	652.9	555.3
Commercial | Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	254.1	232.9	610.3	606.1
Industrial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	188.9	158.9	524	475.3
Industrial | Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	122.2	93.4	342.4	300.1
Industrial | Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	39.1	37.2	103.8	100.6
Other retail
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	10.9	11.6	33	31.8
Other retail | Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	6.8	5.7	18.9	12.5
Other retail | Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2.4	3.4	7.9	9.5
Total electric retail
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,545.8	1,374.2	3,837.2	3,552.8
Total electric retail | Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	721.8	558.5	1,794	1,515.2
Total electric retail | Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	547.6	533.4	1,314.9	1,320.1
Wholesale
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	114.7	148.3	259	301.8
Wholesale | Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	79.1	106.3	194.9	232.7
Wholesale | Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	33	43.4	64.8	80.7
Transmission
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	123.1	101.9	360.9	308.2
Transmission | Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	115.8	97.6	340.1	294.8
Transmission | Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	5.2	3.7	15	10.8
Industrial steam and other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	6.5	7.1	20.7	24.6
Industrial steam and other | Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0.9	0.4	2.7	2.1
Industrial steam and other | Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 1.3	$ 0.9	$ 3.8	$ 3.3

RECEIVABLES (Details)

RECEIVABLES (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables	$ 179.4	$ 169.4
Allowance for credit losses	(13.9)	(24.2)
Total	386.8	256.9
Evergy Kansas Central
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables	134.9	143.5
Allowance for credit losses	(6.2)	(11.6)
Total	214.7	171.8
Evergy Metro
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables	58.2	35.7
Allowance for credit losses	(5.1)	(7.9)
Total	116.7	55
Customer accounts receivable | Billed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable from subsidiaries	22.2	2.6
Customer accounts receivable | Billed | Evergy Kansas Central
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable from subsidiaries	0	0
Customer accounts receivable | Billed | Evergy Metro
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable from subsidiaries	0	0
Customer accounts receivable | Unbilled
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable from subsidiaries	199.1	109.1
Customer accounts receivable | Unbilled | Evergy Kansas Central
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable from subsidiaries	86	39.9
Customer accounts receivable | Unbilled | Evergy Metro
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable from subsidiaries	$ 63.6	$ 27.2

RECEIVABLES - Narrative (Detail

RECEIVABLES - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Evergy Kansas Central
Entity Information [Line Items]
Maximum amount of outstanding principal under receivables agreement	$ 185
Additional Amount of Outstanding Principal Under Receivables Agreement	65
Evergy Metro
Entity Information [Line Items]
Maximum amount of outstanding principal under receivables agreement	130	$ 130
Additional Amount of Outstanding Principal Under Receivables Agreement	70
Evergy Missouri West
Entity Information [Line Items]
Maximum amount of outstanding principal under receivables agreement	50
Additional Amount of Outstanding Principal Under Receivables Agreement	$ 65
Borrowings from mid November through mid July | Evergy Kansas Central
Entity Information [Line Items]
Maximum amount of outstanding principal under receivables agreement		185
Borrowings from mid November through mid July | Evergy Missouri West
Entity Information [Line Items]
Maximum amount of outstanding principal under receivables agreement		50
Borrowings from mid July through mid November | Evergy Kansas Central
Entity Information [Line Items]
Maximum amount of outstanding principal under receivables agreement		200
Borrowings from mid July through mid November | Evergy Missouri West
Entity Information [Line Items]
Maximum amount of outstanding principal under receivables agreement		$ 65

RECEIVABLES - Allowance for Cre

RECEIVABLES - Allowance for Credit Loses (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance January 1	$ 24.2	$ 31.4
Credit loss expense	4.9	7.4
Write-offs	(24.1)	(25.2)
Recoveries of prior write-offs	8.9	7.9
Ending balance September 30	13.9	21.5
Evergy Kansas Central
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance January 1	11.6	16.9
Credit loss expense	2.2	3.1
Write-offs	(11.6)	(13.6)
Recoveries of prior write-offs	4	3.5
Ending balance September 30	6.2	9.9
Evergy Metro
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance January 1	7.9	9.3
Credit loss expense	2.5	2.7
Write-offs	(8.6)	(7.8)
Recoveries of prior write-offs	3.3	3
Ending balance September 30	$ 5.1	$ 7.2

RECEIVABLES - Other Receivables

RECEIVABLES - Other Receivables (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables, contracts with customers	$ 87.6	$ 61.5
Evergy Kansas Central
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables, contracts with customers	81.4	59.9
Evergy Metro
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables, contracts with customers	$ 4.9	$ 0.8

RECEIVABLES - Pledged as Collat

RECEIVABLES - Pledged as Collateral (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable pledged as collateral	$ 425	$ 342
Evergy Kansas Central
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable pledged as collateral	215	166
Evergy Metro
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable pledged as collateral	$ 160	$ 126

RATE MATTERS AND REGULATION - N

RATE MATTERS AND REGULATION - Narrative (Details) $ in Millions	1 Months Ended			9 Months Ended
	Oct. 31, 2024 USD ($)	May 31, 2024 USD ($)	Feb. 28, 2024 USD ($)	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Regulatory Proceedings [Line Items]
Interest rate				5.06%
Evergy Metro | Missouri Public Service Commission
Regulatory Proceedings [Line Items]
Public Utilities, Recovery Mechanism's Sharing Percentage for Fuel Cost				0.05
Evergy Missouri West
Regulatory Proceedings [Line Items]
Regulatory Asset, Amortization Period				15 years
Evergy Missouri West | Missouri Public Service Commission
Regulatory Proceedings [Line Items]
Public Utilities, Recovery Mechanism Percent for Fuel Cost				0.95
Transmission delivery charge | Evergy Kansas Central | Kansas Corporation Commission
Regulatory Proceedings [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount		$ 80.1
Transmission delivery charge | Evergy Metro | Kansas Corporation Commission
Regulatory Proceedings [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount		$ 7.1
2024 Rate case proceedings | Evergy Missouri West
Regulatory Proceedings [Line Items]
Annual revenue rate increase (decrease), requested			$ 104
Return on equity, requested			10.50%
Rate-making equity ratio, requested			52%
FERC 2025 TFR Proceeding [Member] | Evergy Kansas Central | Federal Energy Regulatory Commission
Regulatory Proceedings [Line Items]
Annual transmissions revenue estimated amount of increase (decrease) over prior year				$ 19.1
FERC 2025 TFR Proceeding [Member] | Evergy Metro | Federal Energy Regulatory Commission
Regulatory Proceedings [Line Items]
Annual transmissions revenue estimated amount of increase (decrease) over prior year				1
FERC 2024 TFR Proceeding | Evergy Kansas Central | Federal Energy Regulatory Commission
Regulatory Proceedings [Line Items]
Annual transmissions revenue estimated amount of increase (decrease) over prior year				115.8
FERC 2024 TFR Proceeding | Evergy Metro | Federal Energy Regulatory Commission
Regulatory Proceedings [Line Items]
Annual transmissions revenue estimated amount of increase (decrease) over prior year				23.7
FERC 2023 TFR Proceeding | TFR Refund
Regulatory Proceedings [Line Items]
Regulatory liabilities				7.1	$ 7.1
FERC 2023 TFR Proceeding | Evergy Kansas Central | TFR Refund
Regulatory Proceedings [Line Items]
Regulatory liabilities				7.1	$ 7.1
FERC 2023 TFR Proceeding | Evergy Kansas Central | Federal Energy Regulatory Commission
Regulatory Proceedings [Line Items]
Annual transmissions revenue estimated amount of increase (decrease) over prior year				(21.7)
FERC 2023 TFR Proceeding | Evergy Metro | Federal Energy Regulatory Commission
Regulatory Proceedings [Line Items]
Annual transmissions revenue estimated amount of increase (decrease) over prior year				$ 8.6
2021 MPSC Winter Weather Qualified Extraordinary Costs Securitization | Evergy Missouri West | Maximum
Regulatory Proceedings [Line Items]
Regulatory Asset, Amortization Period				17 years
Subsequent Event | 2024 Rate case proceedings | Evergy Missouri West
Regulatory Proceedings [Line Items]
Rate increase net of fuel and purchased power decrease pending approval	$ 55
Decrease to base rates for fuel and purchased power pending approval	$ 49

GOODWILL (Details)

GOODWILL (Details) $ in Millions	9 Months Ended
	Sep. 30, 2024 USD ($) reporting_unit	Dec. 31, 2023 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill | $	$ 2,336.6	$ 2,336.6
Number of reporting units | reporting_unit	1

ASSET RETIREMENT OBLIGATIONS (D

ASSET RETIREMENT OBLIGATIONS (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Sep. 30, 2024	Dec. 31, 2023
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Beginning balance January 1			$ 1,203.1	$ 1,153.2
Liabilities incurred during the year	$ 72.8	$ 9.7	72.8	9.7
Revision in timing and/or estimates			0	3.2
Settlements			(8.9)	(21.8)
Accretion			43.3	58.8
Ending balance			1,310.3	1,203.1
Less: current portion			(46.4)	(40.3)
Asset retirement obligations			1,263.9	1,162.8
Evergy Kansas Central
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Beginning balance January 1			599.3	565.1
Liabilities incurred during the year	44.8		44.8	9.7
Revision in timing and/or estimates			0	1.6
Settlements			(5.6)	(9.8)
Accretion			25.1	32.7
Ending balance			663.6	599.3
Less: current portion			(27.5)	(22.2)
Asset retirement obligations			636.1	577.1
Evergy Metro
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Beginning balance January 1			460.4	444.2
Liabilities incurred during the year	$ 24.1		24.1	0
Revision in timing and/or estimates			0	1.6
Settlements			(3)	(8.6)
Accretion			15.9	23.2
Ending balance			497.4	460.4
Less: current portion			(16.4)	(16)
Asset retirement obligations			$ 481	$ 444.4

ASSET RETIREMENT OBLIGATIONS -

ASSET RETIREMENT OBLIGATIONS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Sep. 30, 2024	Dec. 31, 2023
Jointly Owned Utility Plant Interests [Line Items]
Liabilities incurred during the year	$ 72.8	$ 9.7	$ 72.8	$ 9.7
Wolf Creek Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share			94%
Evergy Kansas Central
Jointly Owned Utility Plant Interests [Line Items]
Liabilities incurred during the year	44.8		$ 44.8	9.7
Evergy Metro
Jointly Owned Utility Plant Interests [Line Items]
Liabilities incurred during the year	$ 24.1		$ 24.1	$ 0
Evergy Metro | Wolf Creek Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share			47%

PENSION PLANS AND POST-RETIRE_3

PENSION PLANS AND POST-RETIREMENT BENEFITS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Settlement and special termination (gain) loss	$ 0	$ (1.7)	$ 0	$ (19.6)
Contributions by employer			0
Contributions to plans remainder of year	36.8		36.8
Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Settlement and special termination (gain) loss		0		0
Contributions by employer			0.8
Contributions to plans remainder of year	0		0
Evergy Kansas Central | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Settlement and special termination (gain) loss	0	0.4	0	1
Contributions by employer			0
Contributions to plans remainder of year	12.3		12.3
Evergy Kansas Central | Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Settlement and special termination (gain) loss		0		0
Contributions by employer			0.4
Contributions to plans remainder of year	0		0
Evergy Metro | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Settlement and special termination (gain) loss	0	(2.1)	0	(20.6)
Contributions by employer			0
Contributions to plans remainder of year	24.5		24.5
Evergy Metro | Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Settlement and special termination (gain) loss		$ 0		$ 0
Contributions by employer			0.4
Contributions to plans remainder of year	$ 0		$ 0
Wolf Creek
Defined Benefit Plan Disclosure [Line Items]
Jointly owned utility plant, proportionate ownership share	94%		94%
Wolf Creek | Evergy Kansas South Inc
Defined Benefit Plan Disclosure [Line Items]
Jointly owned utility plant, proportionate ownership share	47%		47%
Wolf Creek | Evergy Metro
Defined Benefit Plan Disclosure [Line Items]
Jointly owned utility plant, proportionate ownership share	47%		47%

PENSION PLANS AND POST-RETIRE_4

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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Total recognized in OCI or regulatory asset/liability	$ (1.3)	$ (1.4)	$ (4)	$ (4)
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	11.6	11.4	34.6	34.6
Interest cost	22.4	22.9	67.2	68.3
Expected return on plan assets	(21.7)	(21.9)	(65.1)	(65.8)
Prior service cost	0.5	0.4	1.5	1.4
Recognized net actuarial (gain) loss	(4.3)	(4.8)	(13)	(14.3)
Settlement and special termination (gain) loss	0	(1.7)	0	(19.6)
Net periodic benefit costs before regulatory adjustment and intercompany allocations	8.5	6.3	25.2	4.6
Regulatory adjustment	5.3	14.4	17.9	69.9
Intercompany allocations	0	0	0	0
Net periodic benefit costs (income)	13.8	20.7	43.1	74.5
Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.5	0.5	1.3	1.4
Interest cost	2.6	2.7	7.6	8.3
Expected return on plan assets	(2.9)	(2.9)	(8.6)	(8.9)
Prior service cost	0	0	0	0
Recognized net actuarial (gain) loss	(0.9)	(1.1)	(2.9)	(3.2)
Settlement and special termination (gain) loss		0		0
Net periodic benefit costs before regulatory adjustment and intercompany allocations	(0.7)	(0.8)	(2.6)	(2.4)
Regulatory adjustment	0	(0.2)	0	(0.5)
Intercompany allocations	0	0	0	0
Net periodic benefit costs (income)	(0.7)	(1)	(2.6)	(2.9)
Evergy Kansas Central | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	4.8	4.7	14.3	14.3
Interest cost	11.4	11.6	34.2	34.8
Expected return on plan assets	(10.8)	(11)	(32.3)	(33.2)
Prior service cost	0.5	0.5	1.5	1.5
Recognized net actuarial (gain) loss	0.2	(0.3)	0.6	(1)
Settlement and special termination (gain) loss	0	0.4	0	1
Net periodic benefit costs before regulatory adjustment and intercompany allocations	6.1	5.9	18.3	17.4
Regulatory adjustment	(1.8)	6.8	(5)	21.1
Intercompany allocations	(0.4)	(0.5)	(1.4)	(1.6)
Net periodic benefit costs (income)	3.9	12.2	11.9	36.9
Evergy Kansas Central | Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.3	0.2	0.7	0.7
Interest cost	1.2	1.6	3.8	4.3
Expected return on plan assets	(1.4)	(1.7)	(4.4)	(4.7)
Prior service cost	0	0	0	0
Recognized net actuarial (gain) loss	(0.5)	(0.5)	(1.5)	(1.5)
Settlement and special termination (gain) loss		0		0
Net periodic benefit costs before regulatory adjustment and intercompany allocations	(0.4)	(0.4)	(1.4)	(1.2)
Regulatory adjustment	0.2	(0.6)	0.6	(1.8)
Intercompany allocations	(0.1)	0.1	(0.1)	0.2
Net periodic benefit costs (income)	(0.3)	(0.9)	(0.9)	(2.8)
Evergy Metro
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Total recognized in OCI or regulatory asset/liability	0	0.1	0.2	0.2
Evergy Metro | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	6.8	6.7	20.3	20.3
Interest cost	10.7	11	32.2	32.7
Expected return on plan assets	(10.9)	(10.9)	(32.8)	(32.6)
Prior service cost	0	0	0	0
Recognized net actuarial (gain) loss	(4.4)	(4.3)	(13.1)	(12.7)
Settlement and special termination (gain) loss	0	(2.1)	0	(20.6)
Net periodic benefit costs before regulatory adjustment and intercompany allocations	2.2	0.4	6.6	(12.9)
Regulatory adjustment	6.9	7.3	22.4	48.3
Intercompany allocations	(0.5)	(0.3)	(1.6)	(0.8)
Net periodic benefit costs (income)	8.6	7.4	27.4	34.6
Evergy Metro | Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.2	0.3	0.6	0.7
Interest cost	1.2	1.4	3.7	4.1
Expected return on plan assets	(1.4)	(1.4)	(4.1)	(4.2)
Prior service cost	(0.1)	(0.1)	(0.3)	(0.3)
Recognized net actuarial (gain) loss	(0.5)	(0.6)	(1.4)	(1.6)
Settlement and special termination (gain) loss		0		0
Net periodic benefit costs before regulatory adjustment and intercompany allocations	(0.6)	(0.4)	(1.5)	(1.3)
Regulatory adjustment	(0.1)	0.5	(0.3)	1.5
Intercompany allocations	0.1	0	0.4	0
Net periodic benefit costs (income)	$ (0.6)	$ 0.1	$ (1.4)	$ 0.2

SHORT-TERM BORROWINGS AND SHO_3

SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDIT - Narrative (Details) $ in Millions	Sep. 30, 2024 USD ($)
Short-term Debt [Line Items]
Interest rate	5.06%
Cash Borrowings
Short-term Debt [Line Items]
Line of credit, maximum borrowing capacity	$ 2,500
Debt instrument, debt default, threshold	$ 100
Debt Instrument, debt to capitalization ratio (no more than)	65%
Evergy Kansas Central | Cash Borrowings
Short-term Debt [Line Items]
Debt instrument, debt default, threshold	$ 100
Debt Instrument, debt to capitalization ratio (no more than)	65%
Evergy Metro | Cash Borrowings
Short-term Debt [Line Items]
Debt instrument, debt default, threshold	$ 100
Debt Instrument, debt to capitalization ratio (no more than)	65%
Evergy Missouri West | Cash Borrowings
Short-term Debt [Line Items]
Debt instrument, debt default, threshold	$ 100
Debt Instrument, debt to capitalization ratio (no more than)	65%

SHORT-TERM BORROWINGS AND SHO_4

SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDIT - Schedule of Short Term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Short-term Debt [Line Items]
Master Credit Facility	$ 2,500	$ 2,500
Available Borrowings	1,074.5	1,546.5
Evergy, Inc.
Short-term Debt [Line Items]
Master Credit Facility	700	300
Available Borrowings	$ 216.1	$ 299.3
Weighted Average Interest Rate on Short-Term Borrowings	4.95%	0%
Evergy Kansas Central
Short-term Debt [Line Items]
Master Credit Facility	$ 950	$ 750
Available Borrowings	$ 257.3	$ 518.6
Weighted Average Interest Rate on Short-Term Borrowings	5.08%	5.56%
Evergy Metro
Short-term Debt [Line Items]
Master Credit Facility	$ 450	$ 750
Available Borrowings	$ 377.1	$ 326.7
Weighted Average Interest Rate on Short-Term Borrowings	4.94%	5.58%
Evergy Missouri West
Short-term Debt [Line Items]
Master Credit Facility	$ 400	$ 700
Available Borrowings	$ 224	$ 401.9
Weighted Average Interest Rate on Short-Term Borrowings	4.94%	5.66%
Commercial Paper
Short-term Debt [Line Items]
Line of credit	$ 1,422.8	$ 951.8
Commercial Paper | Evergy, Inc.
Short-term Debt [Line Items]
Line of credit	483.2	0
Commercial Paper | Evergy Kansas Central
Short-term Debt [Line Items]
Line of credit	691.7	230.4
Commercial Paper | Evergy Metro
Short-term Debt [Line Items]
Line of credit	71.9	423.3
Commercial Paper | Evergy Missouri West
Short-term Debt [Line Items]
Line of credit	176	298.1
Letters of Credit
Short-term Debt [Line Items]
Letters of Credit	2.7	1.7
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	1	1
Letters of Credit | Evergy Metro
Short-term Debt [Line Items]
Letters of Credit	1	0
Letters of Credit | Evergy Missouri West
Short-term Debt [Line Items]
Letters of Credit	0	0
Cash Borrowings
Short-term Debt [Line Items]
Line of credit	0	0
Cash Borrowings | Evergy, Inc.
Short-term Debt [Line Items]
Line of credit	0	0
Cash Borrowings | Evergy Kansas Central
Short-term Debt [Line Items]
Line of credit	0	0
Cash Borrowings | Evergy Metro
Short-term Debt [Line Items]
Line of credit	0	0
Cash Borrowings | Evergy Missouri West
Short-term Debt [Line Items]
Line of credit	$ 0	$ 0

LONG-TERM DEBT - Narrative (Det

LONG-TERM DEBT - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2024	May 31, 2024	Apr. 30, 2024	Feb. 28, 2024
Debt Instrument [Line Items]
Interest rate	5.06%
Secured Debt | Senior Notes Due 2024
Debt Instrument [Line Items]
Long-term debt gross	$ 800
Interest rate	2.45%
Evergy Metro | Secured Debt | MortgageBondsDue2034
Debt Instrument [Line Items]
Long-term debt gross			$ 300
Interest rate			5.40%
Evergy Missouri West | SecuritizedBondsDue2040EMW [Member]
Debt Instrument [Line Items]
Long-term debt gross				$ 331.1
Evergy Missouri West | Secured Debt | Mortgage Bonds Due 2034 EMW
Debt Instrument [Line Items]
Long-term debt gross		$ 300
Interest rate		5.65%
Evergy Missouri West | Securitized Bonds | SecuritizedBondsDue2040EMW [Member]
Debt Instrument [Line Items]
Long-term debt gross				$ 331.1
Interest rate				5.10%

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities - Narrative (Details) $ in Millions	Sep. 30, 2024 USD ($)
Derivative, Credit Risk Related Contingent Features [Abstract]
Derivative, Net Liability Position, Aggregate Fair Value	$ 36.8
Credit Derivatives [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	32.9
Additional Collateral, Aggregate Fair Value	33.7
Collateral Already Posted, Aggregate Fair Value	2.5
Credit Derivative, Maximum Exposure, After Master Netting and Collateral	22.7
Evergy Kansas Central
Credit Derivatives [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	32.9
Additional Collateral, Aggregate Fair Value	33.7
Collateral Already Posted, Aggregate Fair Value	2.5
Credit Derivative, Maximum Exposure, After Master Netting and Collateral	$ 22.7

Derivative Instruments - Notion

Derivative Instruments - Notional Amounts (Details) - Not Designated as Hedging Instrument [Member] MWh in Millions, MMBTU in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2024 MWh MMBTU	Dec. 31, 2023 MWh MMBTU
Natural gas commodity contract
Price Risk Derivatives [Abstract]
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	855.9	559.9
Power commodity contract
Price Risk Derivatives [Abstract]
Derivative, Nonmonetary Notional Amount, Energy Measure	77.3	52.9
Evergy Kansas Central | Natural gas commodity contract
Price Risk Derivatives [Abstract]
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	855.9	558.7
Evergy Kansas Central | Power commodity contract
Price Risk Derivatives [Abstract]
Derivative, Nonmonetary Notional Amount, Energy Measure	45.8	32.1
Evergy Metro | Power commodity contract
Price Risk Derivatives [Abstract]
Derivative, Nonmonetary Notional Amount, Energy Measure	23.9	15.1

Derivative Instruments Offsetti

Derivative Instruments Offsetting Assets (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
FIN 39 Derivative asset netting
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]	Other	Other
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other	Other
Derivative Asset, Current	$ 15	$ 12.9
Derivative Asset, Noncurrent	$ 28.6	$ 29.8
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other	Other
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other	Other
Not Designated as Hedging Instrument [Member]
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]
Derivative Asset, Fair Value, Gross Asset	$ 100.4	$ 133
Commodity contract current
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]
Derivative Asset, Fair Value, Gross Asset	60.1	91.3
FIN 39 Derivative asset netting
Gross amounts offset	(45.1)	(78.4)
Commodity contract noncurrent
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]
Derivative Asset, Fair Value, Gross Asset	40.3	41.7
FIN 39 Derivative asset netting
Gross amounts offset	(11.7)	(11.9)
Power commodity contract current | Not Designated as Hedging Instrument [Member]
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]
Derivative Asset, Fair Value, Gross Asset	22	23.2
Power commodity contract noncurrent | Not Designated as Hedging Instrument [Member]
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]
Derivative Asset, Fair Value, Gross Asset	36.6	35.7
Natural gas commodity contract current | Not Designated as Hedging Instrument [Member]
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]
Derivative Asset, Fair Value, Gross Asset	38.1	68.1
Natural gas commodity contract noncurrent | Not Designated as Hedging Instrument [Member]
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]
Derivative Asset, Fair Value, Gross Asset	3.7	6
Evergy Kansas Central
FIN 39 Derivative asset netting
Derivative Asset, Current	5.1	11.1
Derivative Asset, Noncurrent	28.6	29.8
Evergy Kansas Central | Not Designated as Hedging Instrument [Member]
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]
Derivative Asset, Fair Value, Gross Asset	88.3	128.1
Evergy Kansas Central | Commodity contract current
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]
Derivative Asset, Fair Value, Gross Asset	48	86.4
FIN 39 Derivative asset netting
Gross amounts offset	(42.9)	(75.3)
Evergy Kansas Central | Commodity contract noncurrent
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]
Derivative Asset, Fair Value, Gross Asset	40.3	41.7
FIN 39 Derivative asset netting
Gross amounts offset	(11.7)	(11.9)
Evergy Kansas Central | Power commodity contract current | Not Designated as Hedging Instrument [Member]
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]
Derivative Asset, Fair Value, Gross Asset	9.9	18.3
Evergy Kansas Central | Power commodity contract noncurrent | Not Designated as Hedging Instrument [Member]
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]
Derivative Asset, Fair Value, Gross Asset	36.6	35.7
Evergy Kansas Central | Natural gas commodity contract current | Not Designated as Hedging Instrument [Member]
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]
Derivative Asset, Fair Value, Gross Asset	38.1	68.1
Evergy Kansas Central | Natural gas commodity contract noncurrent | Not Designated as Hedging Instrument [Member]
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]
Derivative Asset, Fair Value, Gross Asset	3.7	6
Evergy Metro
FIN 39 Derivative asset netting
Derivative Asset, Current	7	0
Derivative Asset, Noncurrent	0	0
Evergy Metro | Not Designated as Hedging Instrument [Member]
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]
Derivative Asset, Fair Value, Gross Asset	8.5	2.1
Evergy Metro | Commodity contract current
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]
Derivative Asset, Fair Value, Gross Asset	8.5	2.1
FIN 39 Derivative asset netting
Gross amounts offset	(1.5)	(2.1)
Evergy Metro | Commodity contract noncurrent
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]
Derivative Asset, Fair Value, Gross Asset	0	0
FIN 39 Derivative asset netting
Gross amounts offset	0	0
Evergy Metro | Power commodity contract current | Not Designated as Hedging Instrument [Member]
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]
Derivative Asset, Fair Value, Gross Asset	$ 8.5	$ 2.1

Derivative Instruments Offset_2

Derivative Instruments Offsetting Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset [Abstract]
Derivative Liability, Current	$ 3.8	$ 11.6
Derivative Liability, Noncurrent	$ 34.7	$ 33.8
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other	Other
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other	Other
Not Designated as Hedging Instrument [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	$ 88.2	$ 128.8
Power commodity contract noncurrent | Not Designated as Hedging Instrument [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	34.5	32.9
Commodity contract current
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	49.8	89.1
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset [Abstract]
FIN 39 Derivative liability netting	(46)	(77.5)
Commodity contract noncurrent
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	38.4	39.7
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset [Abstract]
FIN 39 Derivative liability netting	(3.7)	(5.9)
Power commodity contract current | Not Designated as Hedging Instrument [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	11.4	21
Natural gas commodity contract current | Not Designated as Hedging Instrument [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	38.4	68.1
Natural gas commodity contract noncurrent | Not Designated as Hedging Instrument [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	3.9	6.8
Evergy Kansas Central
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset [Abstract]
Derivative Liability, Current	3.8	6.9
Derivative Liability, Noncurrent	34.7	33.8
Evergy Kansas Central | Not Designated as Hedging Instrument [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	86	121
Evergy Kansas Central | Power commodity contract noncurrent | Not Designated as Hedging Instrument [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	34.5	32.9
Evergy Kansas Central | Commodity contract current
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	47.6	81.3
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset [Abstract]
FIN 39 Derivative liability netting	(43.8)	(74.4)
Evergy Kansas Central | Commodity contract noncurrent
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	38.4	39.7
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset [Abstract]
FIN 39 Derivative liability netting	(3.7)	(5.9)
Evergy Kansas Central | Power commodity contract current | Not Designated as Hedging Instrument [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	9.2	14.3
Evergy Kansas Central | Natural gas commodity contract current | Not Designated as Hedging Instrument [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	38.4	67
Evergy Kansas Central | Natural gas commodity contract noncurrent | Not Designated as Hedging Instrument [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	3.9	6.8
Evergy Metro
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset [Abstract]
Derivative Liability, Current	0	3.6
Derivative Liability, Noncurrent	0	0
Evergy Metro | Not Designated as Hedging Instrument [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	1.5	5.7
Evergy Metro | Commodity contract current
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	1.5	5.7
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset [Abstract]
FIN 39 Derivative liability netting	(1.5)	(2.1)
Evergy Metro | Commodity contract noncurrent
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	0	0
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset [Abstract]
FIN 39 Derivative liability netting	0	0
Evergy Metro | Natural gas commodity contract current | Not Designated as Hedging Instrument [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	$ 1.5	$ 5.7

Derivative Instruments Gain and

Derivative Instruments Gain and Losses (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (10.8)	$ 2.7	$ (20.7)	$ 20.3
Commodity Contract [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(10.8)	2.7	(20.7)	20.3
Evergy Kansas Central
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(10.8)	2.7	(20.7)	20.3
Evergy Kansas Central | Commodity Contract [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (10.8)	$ 2.7	$ (20.7)	$ 20.3

FAIR VALUE MEASUREMENTS - Long-

FAIR VALUE MEASUREMENTS - Long-Term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Book Value | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	$ 11,975.9	$ 11,853.3
Fair Value | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	11,529.8	11,044.9
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	4,582.7	4,580.4
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	4,262	4,176.6
Evergy Metro | Book Value | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	3,222.8	2,924.4
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	3,108	2,738.8
Long-Term debt fair value adjustment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt gross	$ 82.9	$ 87

FAIR VALUE MEASUREMENTS - Recur

FAIR VALUE MEASUREMENTS - Recurring (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Assets
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other, Other	Other, Other
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other, Other	Other, Other
Fair Value, Measurements, Recurring
Assets
Total nuclear decommissioning trust	$ 877.4	$ 766.4
Total rabbi trust	32.9	33.3
Derivative Asset	43.6	42.7
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(56.8)	(90.3)
Total self-insured health plan trust	13.9	15.7
Total Assets	967.8	858.1
Derivative Liability	38.5	45.4
FIN 39 Derivative liability netting	(49.7)	(83.4)
Total Liabilities	38.5	45.4
Fair Value, Measurements, Recurring | Level 1
Assets
Total nuclear decommissioning trust	761.3	653.7
Total rabbi trust	32.9	33.3
Derivative Asset, Fair Value, Gross Asset	48.7	89
Total self-insured health plan trust	7.7	8.8
Total Assets	850.6	784.8
Derivative Liability, Fair Value, Gross Liability	42.1	82
Total Liabilities	42.1	82
Fair Value, Measurements, Recurring | Level 2
Assets
Total nuclear decommissioning trust	46.9	47.8
Total rabbi trust	0	0
Derivative Asset, Fair Value, Gross Asset	36.3	33.6
Total self-insured health plan trust	6.2	6.9
Total Assets	89.4	88.3
Derivative Liability, Fair Value, Gross Liability	40.9	36.9
Total Liabilities	40.9	36.9
Fair Value, Measurements, Recurring | Level 3
Assets
Total nuclear decommissioning trust	0	0
Total rabbi trust	0	0
Derivative Asset, Fair Value, Gross Asset	15.4	10.4
Total self-insured health plan trust	0	0
Total Assets	15.4	10.4
Derivative Liability, Fair Value, Gross Liability	5.2	9.9
Total Liabilities	5.2	9.9
Fair Value, Measurements, Recurring | NAV
Assets
Total nuclear decommissioning trust	69.2	64.9
Total rabbi trust	0	0
Derivative Asset, Fair Value, Gross Asset	0	0
Total self-insured health plan trust	0	0
Total Assets	69.2	64.9
Derivative Liability, Fair Value, Gross Liability	0	0
Total Liabilities	0	0
Fair Value, Measurements, Recurring | Power commodity contract
Assets
Derivative Asset	42	42
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(16.6)	(16.9)
Derivative Liability	36.4	43.9
FIN 39 Derivative liability netting	(9.5)	(10)
Fair Value, Measurements, Recurring | Power commodity contract | Level 1
Assets
Derivative Asset, Fair Value, Gross Asset	10.4	16.3
Derivative Liability, Fair Value, Gross Liability	4	9.4
Fair Value, Measurements, Recurring | Power commodity contract | Level 2
Assets
Derivative Asset, Fair Value, Gross Asset	32.8	32.2
Derivative Liability, Fair Value, Gross Liability	36.7	34.6
Fair Value, Measurements, Recurring | Power commodity contract | Level 3
Assets
Derivative Asset, Fair Value, Gross Asset	15.4	10.4
Derivative Liability, Fair Value, Gross Liability	5.2	9.9
Fair Value, Measurements, Recurring | Power commodity contract | NAV
Assets
Derivative Asset, Fair Value, Gross Asset	0	0
Derivative Liability, Fair Value, Gross Liability	0	0
Fair Value, Measurements, Recurring | Natural gas commodity contract
Assets
Derivative Asset	1.6	0.7
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(40.2)	(73.4)
Derivative Liability	2.1	1.5
FIN 39 Derivative liability netting	(40.2)	(73.4)
Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 1
Assets
Derivative Asset, Fair Value, Gross Asset	38.3	72.7
Derivative Liability, Fair Value, Gross Liability	38.1	72.6
Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 2
Assets
Derivative Asset, Fair Value, Gross Asset	3.5	1.4
Derivative Liability, Fair Value, Gross Liability	4.2	2.3
Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 3
Assets
Derivative Asset, Fair Value, Gross Asset	0	0
Derivative Liability, Fair Value, Gross Liability	0	0
Fair Value, Measurements, Recurring | Natural gas commodity contract | NAV
Assets
Derivative Asset, Fair Value, Gross Asset	0	0
Derivative Liability, Fair Value, Gross Liability	$ 0	$ 0
Evergy Kansas Central
Assets
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other, Other	Other, Other
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other, Other	Other, Other
Evergy Kansas Central | Fair Value, Measurements, Recurring
Assets
Total nuclear decommissioning trust	$ 410.7	$ 365.1
Total rabbi trust	24.4	24.5
Derivative Asset	33.7	40.9
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(54.6)	(87.2)
Total Assets	468.8	430.5
Derivative Liability	38.5	40.7
FIN 39 Derivative liability netting	(47.5)	(80.3)
Total Liabilities	38.5	40.7
Evergy Kansas Central | Fair Value, Measurements, Recurring | Core bond fund
Assets
Total nuclear decommissioning trust	62.3	56.2
Evergy Kansas Central | Fair Value, Measurements, Recurring | High-yield bond fund
Assets
Total nuclear decommissioning trust	32.1	29.1
Evergy Kansas Central | Fair Value, Measurements, Recurring | Emerging markets bond fund
Assets
Total nuclear decommissioning trust	20.2	18.3
Evergy Kansas Central | Fair Value, Measurements, Recurring | Combination debt/equity/other fund
Assets
Total rabbi trust	1.7	1.7
Evergy Kansas Central | Fair Value, Measurements, Recurring | Alternative investments fund
Assets
Total nuclear decommissioning trust	43.9	37.9
Evergy Kansas Central | Fair Value, Measurements, Recurring | Real estate securities fund
Assets
Total nuclear decommissioning trust	16.2	17.2
Evergy Kansas Central | Fair Value, Measurements, Recurring | Cash equivalents
Assets
Total nuclear decommissioning trust	0.6	0.7
Total rabbi trust	0.2	0.2
Evergy Kansas Central | Fair Value, Measurements, Recurring | Equity funds
Assets
Total rabbi trust	7.4	7.4
Evergy Kansas Central | Fair Value, Measurements, Recurring | Fixed income funds
Assets
Total rabbi trust	15.1	15.2
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1
Assets
Total nuclear decommissioning trust	341.5	300.2
Total rabbi trust	24.4	24.5
Derivative Asset, Fair Value, Gross Asset	48.7	89
Total Assets	414.6	413.7
Derivative Liability, Fair Value, Gross Liability	42.1	82
Total Liabilities	42.1	82
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | Core bond fund
Assets
Total nuclear decommissioning trust	62.3	56.2
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | High-yield bond fund
Assets
Total nuclear decommissioning trust	32.1	29.1
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | Emerging markets bond fund
Assets
Total nuclear decommissioning trust	20.2	18.3
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | Combination debt/equity/other fund
Assets
Total rabbi trust	1.7	1.7
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | Alternative investments fund
Assets
Total nuclear decommissioning trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | Real estate securities fund
Assets
Total nuclear decommissioning trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | Cash equivalents
Assets
Total nuclear decommissioning trust	0.6	0.7
Total rabbi trust	0.2	0.2
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | Equity funds
Assets
Total rabbi trust	7.4	7.4
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | Fixed income funds
Assets
Total rabbi trust	15.1	15.2
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 2
Assets
Total nuclear decommissioning trust	0	0
Total rabbi trust	0	0
Derivative Asset, Fair Value, Gross Asset	36.3	33.6
Total Assets	36.3	33.6
Derivative Liability, Fair Value, Gross Liability	40.9	35.8
Total Liabilities	40.9	35.8
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 2 | Core bond fund
Assets
Total nuclear decommissioning trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 2 | High-yield bond fund
Assets
Total nuclear decommissioning trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 2 | Emerging markets bond fund
Assets
Total nuclear decommissioning trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 2 | Combination debt/equity/other fund
Assets
Total rabbi trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 2 | Alternative investments fund
Assets
Total nuclear decommissioning trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 2 | Real estate securities fund
Assets
Total nuclear decommissioning trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 2 | Cash equivalents
Assets
Total nuclear decommissioning trust	0	0
Total rabbi trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 2 | Equity funds
Assets
Total rabbi trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 2 | Fixed income funds
Assets
Total rabbi trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 3
Assets
Total nuclear decommissioning trust	0	0
Total rabbi trust	0	0
Derivative Asset, Fair Value, Gross Asset	3.3	5.5
Total Assets	3.3	5.5
Derivative Liability, Fair Value, Gross Liability	3	3.2
Total Liabilities	3	3.2
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 3 | Core bond fund
Assets
Total nuclear decommissioning trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 3 | High-yield bond fund
Assets
Total nuclear decommissioning trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 3 | Emerging markets bond fund
Assets
Total nuclear decommissioning trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 3 | Combination debt/equity/other fund
Assets
Total rabbi trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 3 | Alternative investments fund
Assets
Total nuclear decommissioning trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 3 | Real estate securities fund
Assets
Total nuclear decommissioning trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 3 | Cash equivalents
Assets
Total nuclear decommissioning trust	0	0
Total rabbi trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 3 | Equity funds
Assets
Total rabbi trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 3 | Fixed income funds
Assets
Total rabbi trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV
Assets
Total nuclear decommissioning trust	69.2	64.9
Total rabbi trust	0	0
Derivative Asset, Fair Value, Gross Asset	0	0
Total Assets	69.2	64.9
Derivative Liability, Fair Value, Gross Liability	0	0
Total Liabilities	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV | Core bond fund
Assets
Total nuclear decommissioning trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV | High-yield bond fund
Assets
Total nuclear decommissioning trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV | Emerging markets bond fund
Assets
Total nuclear decommissioning trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV | Combination debt/equity/other fund
Assets
Total rabbi trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV | Alternative investments fund
Assets
Total nuclear decommissioning trust	43.9	37.9
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV | Real estate securities fund
Assets
Total nuclear decommissioning trust	16.2	17.2
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV | Cash equivalents
Assets
Total nuclear decommissioning trust	0	0
Total rabbi trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV | Equity funds
Assets
Total rabbi trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV | Fixed income funds
Assets
Total rabbi trust	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Power commodity contract
Assets
Derivative Asset	32.1	40.2
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(14.4)	(13.8)
Derivative Liability	36.4	40.3
FIN 39 Derivative liability netting	(7.3)	(6.9)
Evergy Kansas Central | Fair Value, Measurements, Recurring | Power commodity contract | Level 1
Assets
Derivative Asset, Fair Value, Gross Asset	10.4	16.3
Derivative Liability, Fair Value, Gross Liability	4	9.4
Evergy Kansas Central | Fair Value, Measurements, Recurring | Power commodity contract | Level 2
Assets
Derivative Asset, Fair Value, Gross Asset	32.8	32.2
Derivative Liability, Fair Value, Gross Liability	36.7	34.6
Evergy Kansas Central | Fair Value, Measurements, Recurring | Power commodity contract | Level 3
Assets
Derivative Asset, Fair Value, Gross Asset	3.3	5.5
Derivative Liability, Fair Value, Gross Liability	3	3.2
Evergy Kansas Central | Fair Value, Measurements, Recurring | Power commodity contract | NAV
Assets
Derivative Asset, Fair Value, Gross Asset	0	0
Derivative Liability, Fair Value, Gross Liability	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Natural gas commodity contract
Assets
Derivative Asset	1.6	0.7
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(40.2)	(73.4)
Derivative Liability	2.1	0.4
FIN 39 Derivative liability netting	(40.2)	(73.4)
Evergy Kansas Central | Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 1
Assets
Derivative Asset, Fair Value, Gross Asset	38.3	72.7
Derivative Liability, Fair Value, Gross Liability	38.1	72.6
Evergy Kansas Central | Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 2
Assets
Derivative Asset, Fair Value, Gross Asset	3.5	1.4
Derivative Liability, Fair Value, Gross Liability	4.2	1.2
Evergy Kansas Central | Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 3
Assets
Derivative Asset, Fair Value, Gross Asset	0	0
Derivative Liability, Fair Value, Gross Liability	0	0
Evergy Kansas Central | Fair Value, Measurements, Recurring | Natural gas commodity contract | NAV
Assets
Derivative Asset, Fair Value, Gross Asset	0	0
Derivative Liability, Fair Value, Gross Liability	0	0
Evergy Kansas Central | Domestic | Fair Value, Measurements, Recurring | Equity securities
Assets
Total nuclear decommissioning trust	151.3	133.1
Evergy Kansas Central | Domestic | Fair Value, Measurements, Recurring | Level 1 | Equity securities
Assets
Total nuclear decommissioning trust	142.2	123.3
Evergy Kansas Central | Domestic | Fair Value, Measurements, Recurring | Level 2 | Equity securities
Assets
Total nuclear decommissioning trust	0	0
Evergy Kansas Central | Domestic | Fair Value, Measurements, Recurring | Level 3 | Equity securities
Assets
Total nuclear decommissioning trust	0	0
Evergy Kansas Central | Domestic | Fair Value, Measurements, Recurring | NAV | Equity securities
Assets
Total nuclear decommissioning trust	9.1	9.8
Evergy Kansas Central | International | Fair Value, Measurements, Recurring | Equity securities
Assets
Total nuclear decommissioning trust	84.1	72.6
Evergy Kansas Central | International | Fair Value, Measurements, Recurring | Level 1 | Equity securities
Assets
Total nuclear decommissioning trust	84.1	72.6
Evergy Kansas Central | International | Fair Value, Measurements, Recurring | Level 2 | Equity securities
Assets
Total nuclear decommissioning trust	0	0
Evergy Kansas Central | International | Fair Value, Measurements, Recurring | Level 3 | Equity securities
Assets
Total nuclear decommissioning trust	0	0
Evergy Kansas Central | International | Fair Value, Measurements, Recurring | NAV | Equity securities
Assets
Total nuclear decommissioning trust	$ 0	$ 0
Evergy Metro
Assets
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other, Other	Other, Other
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other, Other	Other, Other
Evergy Metro | Fair Value, Measurements, Recurring
Assets
Total nuclear decommissioning trust	$ 466.7	$ 401.3
Derivative Asset	7	0
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(1.5)	(2.1)
Total self-insured health plan trust	13.9	15.7
Total Assets	487.6	417
Derivative Liability	0	3.6
FIN 39 Derivative liability netting	(1.5)	(2.1)
Total Liabilities	0	3.6
Evergy Metro | Fair Value, Measurements, Recurring | Equity securities
Assets
Total nuclear decommissioning trust	361.2	302.4
Total self-insured health plan trust	1.7	2
Evergy Metro | Fair Value, Measurements, Recurring | Cash equivalents
Assets
Total nuclear decommissioning trust	3.2	3.2
Evergy Metro | Fair Value, Measurements, Recurring | U.S. Treasury
Assets
Total nuclear decommissioning trust	55.4	47.9
Evergy Metro | Fair Value, Measurements, Recurring | State and local obligations
Assets
Total nuclear decommissioning trust	2.2	3.8
Evergy Metro | Fair Value, Measurements, Recurring | Corporate bonds
Assets
Total nuclear decommissioning trust	44.7	43.9
Evergy Metro | Fair Value, Measurements, Recurring | Foreign governments
Assets
Total nuclear decommissioning trust		0.1
Evergy Metro | Fair Value, Measurements, Recurring | Debt securities
Assets
Total self-insured health plan trust	8.3	9.4
Evergy Metro | Fair Value, Measurements, Recurring | Cash and cash equivalents
Assets
Total self-insured health plan trust	3.9	4.3
Evergy Metro | Fair Value, Measurements, Recurring | Level 1
Assets
Total nuclear decommissioning trust	419.8	353.5
Derivative Asset, Fair Value, Gross Asset	0	0
Total self-insured health plan trust	7.7	8.8
Total Assets	427.5	362.3
Derivative Liability, Fair Value, Gross Liability	0	0
Total Liabilities	0	0
Evergy Metro | Fair Value, Measurements, Recurring | Level 1 | Equity securities
Assets
Total nuclear decommissioning trust	361.2	302.4
Total self-insured health plan trust	1.7	2
Evergy Metro | Fair Value, Measurements, Recurring | Level 1 | Cash equivalents
Assets
Total nuclear decommissioning trust	3.2	3.2
Evergy Metro | Fair Value, Measurements, Recurring | Level 1 | U.S. Treasury
Assets
Total nuclear decommissioning trust	55.4	47.9
Evergy Metro | Fair Value, Measurements, Recurring | Level 1 | State and local obligations
Assets
Total nuclear decommissioning trust	0	0
Evergy Metro | Fair Value, Measurements, Recurring | Level 1 | Corporate bonds
Assets
Total nuclear decommissioning trust	0	0
Evergy Metro | Fair Value, Measurements, Recurring | Level 1 | Foreign governments
Assets
Total nuclear decommissioning trust		0
Evergy Metro | Fair Value, Measurements, Recurring | Level 1 | Debt securities
Assets
Total self-insured health plan trust	2.1	2.5
Evergy Metro | Fair Value, Measurements, Recurring | Level 1 | Cash and cash equivalents
Assets
Total self-insured health plan trust	3.9	4.3
Evergy Metro | Fair Value, Measurements, Recurring | Level 2
Assets
Total nuclear decommissioning trust	46.9	47.8
Derivative Asset, Fair Value, Gross Asset	0	0
Total self-insured health plan trust	6.2	6.9
Total Assets	53.1	54.7
Derivative Liability, Fair Value, Gross Liability	0	0
Total Liabilities	0	0
Evergy Metro | Fair Value, Measurements, Recurring | Level 2 | Equity securities
Assets
Total nuclear decommissioning trust	0	0
Total self-insured health plan trust	0	0
Evergy Metro | Fair Value, Measurements, Recurring | Level 2 | Cash equivalents
Assets
Total nuclear decommissioning trust	0	0
Evergy Metro | Fair Value, Measurements, Recurring | Level 2 | U.S. Treasury
Assets
Total nuclear decommissioning trust	0	0
Evergy Metro | Fair Value, Measurements, Recurring | Level 2 | State and local obligations
Assets
Total nuclear decommissioning trust	2.2	3.8
Evergy Metro | Fair Value, Measurements, Recurring | Level 2 | Corporate bonds
Assets
Total nuclear decommissioning trust	44.7	43.9
Evergy Metro | Fair Value, Measurements, Recurring | Level 2 | Foreign governments
Assets
Total nuclear decommissioning trust		0.1
Evergy Metro | Fair Value, Measurements, Recurring | Level 2 | Debt securities
Assets
Total self-insured health plan trust	6.2	6.9
Evergy Metro | Fair Value, Measurements, Recurring | Level 2 | Cash and cash equivalents
Assets
Total self-insured health plan trust	0	0
Evergy Metro | Fair Value, Measurements, Recurring | Level 3
Assets
Total nuclear decommissioning trust	0	0
Derivative Asset, Fair Value, Gross Asset	8.5	2.1
Total self-insured health plan trust	0	0
Total Assets	8.5	2.1
Derivative Liability, Fair Value, Gross Liability	1.5	5.7
Total Liabilities	1.5	5.7
Evergy Metro | Fair Value, Measurements, Recurring | Level 3 | Equity securities
Assets
Total nuclear decommissioning trust	0	0
Total self-insured health plan trust	0	0
Evergy Metro | Fair Value, Measurements, Recurring | Level 3 | Cash equivalents
Assets
Total nuclear decommissioning trust	0	0
Evergy Metro | Fair Value, Measurements, Recurring | Level 3 | U.S. Treasury
Assets
Total nuclear decommissioning trust	0	0
Evergy Metro | Fair Value, Measurements, Recurring | Level 3 | State and local obligations
Assets
Total nuclear decommissioning trust	0	0
Evergy Metro | Fair Value, Measurements, Recurring | Level 3 | Corporate bonds
Assets
Total nuclear decommissioning trust	0	0
Evergy Metro | Fair Value, Measurements, Recurring | Level 3 | Foreign governments
Assets
Total nuclear decommissioning trust		0
Evergy Metro | Fair Value, Measurements, Recurring | Level 3 | Debt securities
Assets
Total self-insured health plan trust	0	0
Evergy Metro | Fair Value, Measurements, Recurring | Level 3 | Cash and cash equivalents
Assets
Total self-insured health plan trust	0	0
Evergy Metro | Fair Value, Measurements, Recurring | NAV
Assets
Total nuclear decommissioning trust	0	0
Derivative Asset, Fair Value, Gross Asset	0	0
Total self-insured health plan trust	0	0
Total Assets	0	0
Derivative Liability, Fair Value, Gross Liability	0	0
Total Liabilities	0	0
Evergy Metro | Fair Value, Measurements, Recurring | NAV | Equity securities
Assets
Total nuclear decommissioning trust	0	0
Total self-insured health plan trust	0	0
Evergy Metro | Fair Value, Measurements, Recurring | NAV | Cash equivalents
Assets
Total nuclear decommissioning trust	0	0
Evergy Metro | Fair Value, Measurements, Recurring | NAV | U.S. Treasury
Assets
Total nuclear decommissioning trust	0	0
Evergy Metro | Fair Value, Measurements, Recurring | NAV | State and local obligations
Assets
Total nuclear decommissioning trust	0	0
Evergy Metro | Fair Value, Measurements, Recurring | NAV | Corporate bonds
Assets
Total nuclear decommissioning trust	0	0
Evergy Metro | Fair Value, Measurements, Recurring | NAV | Foreign governments
Assets
Total nuclear decommissioning trust		0
Evergy Metro | Fair Value, Measurements, Recurring | NAV | Debt securities
Assets
Total self-insured health plan trust	0	0
Evergy Metro | Fair Value, Measurements, Recurring | NAV | Cash and cash equivalents
Assets
Total self-insured health plan trust	0	0
Evergy Metro | Fair Value, Measurements, Recurring | Power commodity contract
Assets
Derivative Asset	7	0
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(1.5)	(2.1)
Derivative Liability	0	3.6
FIN 39 Derivative liability netting	(1.5)	(2.1)
Evergy Metro | Fair Value, Measurements, Recurring | Power commodity contract | Level 1
Assets
Derivative Asset, Fair Value, Gross Asset	0	0
Derivative Liability, Fair Value, Gross Liability	0	0
Evergy Metro | Fair Value, Measurements, Recurring | Power commodity contract | Level 2
Assets
Derivative Asset, Fair Value, Gross Asset	0	0
Derivative Liability, Fair Value, Gross Liability	0	0
Evergy Metro | Fair Value, Measurements, Recurring | Power commodity contract | Level 3
Assets
Derivative Asset, Fair Value, Gross Asset	8.5	2.1
Derivative Liability, Fair Value, Gross Liability	1.5	5.7
Evergy Metro | Fair Value, Measurements, Recurring | Power commodity contract | NAV
Assets
Derivative Asset, Fair Value, Gross Asset	0	0
Derivative Liability, Fair Value, Gross Liability	$ 0	$ 0
Other Evergy
Assets
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other, Other	Other, Other
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other, Other	Other, Other
Other Evergy | Fair Value, Measurements, Recurring
Assets
Total rabbi trust	$ 8.5	$ 8.8
Derivative Asset	2.9	1.8
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(0.7)	(1)
Total Assets	11.4	10.6
Derivative Liability	0	1.1
FIN 39 Derivative liability netting	(0.7)	(1)
Total Liabilities	0	1.1
Other Evergy | Fair Value, Measurements, Recurring | Core bond fund
Assets
Total rabbi trust	8.5	8.8
Other Evergy | Fair Value, Measurements, Recurring | Level 1
Assets
Total rabbi trust	8.5	8.8
Derivative Asset, Fair Value, Gross Asset	0	0
Total Assets	8.5	8.8
Derivative Liability, Fair Value, Gross Liability	0	0
Total Liabilities	0	0
Other Evergy | Fair Value, Measurements, Recurring | Level 1 | Core bond fund
Assets
Total rabbi trust	8.5	8.8
Other Evergy | Fair Value, Measurements, Recurring | Level 2
Assets
Total rabbi trust	0	0
Derivative Asset, Fair Value, Gross Asset	0	0
Total Assets	0	0
Derivative Liability, Fair Value, Gross Liability	0	1.1
Total Liabilities	0	1.1
Other Evergy | Fair Value, Measurements, Recurring | Level 2 | Core bond fund
Assets
Total rabbi trust	0	0
Other Evergy | Fair Value, Measurements, Recurring | Level 3
Assets
Total rabbi trust	0	0
Derivative Asset, Fair Value, Gross Asset	3.6	2.8
Total Assets	3.6	2.8
Derivative Liability, Fair Value, Gross Liability	0.7	1
Total Liabilities	0.7	1
Other Evergy | Fair Value, Measurements, Recurring | Level 3 | Core bond fund
Assets
Total rabbi trust	0	0
Other Evergy | Fair Value, Measurements, Recurring | NAV
Assets
Total rabbi trust	0	0
Derivative Asset, Fair Value, Gross Asset	0	0
Total Assets	0	0
Derivative Liability, Fair Value, Gross Liability	0	0
Total Liabilities	0	0
Other Evergy | Fair Value, Measurements, Recurring | NAV | Core bond fund
Assets
Total rabbi trust	0	0
Other Evergy | Fair Value, Measurements, Recurring | Power commodity contract
Assets
Derivative Asset	2.9	1.8
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(0.7)	(1)
Derivative Liability	0	0
FIN 39 Derivative liability netting	(0.7)	(1)
Other Evergy | Fair Value, Measurements, Recurring | Power commodity contract | Level 1
Assets
Derivative Asset, Fair Value, Gross Asset	0	0
Derivative Liability, Fair Value, Gross Liability	0	0
Other Evergy | Fair Value, Measurements, Recurring | Power commodity contract | Level 2
Assets
Derivative Asset, Fair Value, Gross Asset	0	0
Derivative Liability, Fair Value, Gross Liability	0	0
Other Evergy | Fair Value, Measurements, Recurring | Power commodity contract | Level 3
Assets
Derivative Asset, Fair Value, Gross Asset	3.6	2.8
Derivative Liability, Fair Value, Gross Liability	0.7	1
Other Evergy | Fair Value, Measurements, Recurring | Power commodity contract | NAV
Assets
Derivative Asset, Fair Value, Gross Asset	0	0
Derivative Liability, Fair Value, Gross Liability	$ 0	0
Other Evergy | Fair Value, Measurements, Recurring | Natural gas commodity contract
Assets
Derivative Liability		1.1
FIN 39 Derivative liability netting		0
Other Evergy | Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 1
Assets
Derivative Liability, Fair Value, Gross Liability		0
Other Evergy | Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 2
Assets
Derivative Liability, Fair Value, Gross Liability		1.1
Other Evergy | Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 3
Assets
Derivative Liability, Fair Value, Gross Liability		0
Other Evergy | Fair Value, Measurements, Recurring | Natural gas commodity contract | NAV
Assets
Derivative Liability, Fair Value, Gross Liability		$ 0

FAIR VALUE MEASUREMENTS - NAV (

FAIR VALUE MEASUREMENTS - NAV (Details) $ in Millions	9 Months Ended
	Sep. 30, 2024 USD ($) fund	Dec. 31, 2023 USD ($)
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	$ 1.4	$ 1.4
Evergy Kansas Central | Alternative investments fund
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	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
Domestic | Evergy Kansas Central | Equity securities
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	$ 1.4	1.4
NAV, number of funds | fund	5
Fair Value, Measurements, Recurring
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	$ 877.4	766.4
Total rabbi trust	32.9	33.3
Total Assets	967.8	858.1
Fair Value, Measurements, Recurring | Evergy Kansas Central
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	410.7	365.1
Total rabbi trust	24.4	24.5
Total Assets	468.8	430.5
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	43.9	37.9
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	16.2	17.2
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	62.3	56.2
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 rabbi trust	1.7	1.7
Fair Value, Measurements, Recurring | Other Evergy
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total rabbi trust	8.5	8.8
Total Assets	11.4	10.6
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	8.5	8.8
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	151.3	133.1
NAV | Fair Value, Measurements, Recurring
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	69.2	64.9
Total rabbi trust	0	0
Total Assets	69.2	64.9
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	69.2	64.9
Total rabbi trust	0	0
Total Assets	69.2	64.9
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	$ 43.9	37.9
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	$ 16.2	17.2
Length of Settlement	65 days
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
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 rabbi trust	0	0
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
Total Assets	0	0
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	$ 9.1	$ 9.8

FAIR VALUE MEASUREMENTS - Gains

FAIR VALUE MEASUREMENTS - Gains (Losses) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gains (losses)	$ 45.8	$ (12.8)	$ 96.7	$ 44.4
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]			Investment earnings (loss)
Nuclear decommissioning trust - equity securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gains (losses)	39.9	(8.3)	$ 92.2	46.4
Nuclear decommissioning trust - debt securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gains (losses)	4.1	(3.4)	2.4	(2.6)
Rabbi trusts - equity securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gains (losses)	1.8	(1.1)	2.1	0.6
Evergy Kansas Central
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gains (losses)	21.2	0.7	$ 42.2	24.2
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]			Investment earnings (loss)
Evergy Kansas Central | Nuclear decommissioning trust - equity securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gains (losses)	19.9	1.4	$ 40.4	23.4
Evergy Kansas Central | Rabbi trusts - equity securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gains (losses)	1.3	(0.7)	1.8	0.8
Evergy Metro
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gains (losses)	24.1	(13.1)	$ 54.2	20.4
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]			Investment earnings (loss)
Evergy Metro | Nuclear decommissioning trust - equity securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gains (losses)	20	(9.7)	$ 51.8	23
Evergy Metro | Nuclear decommissioning trust - debt securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gains (losses)	$ 4.1	$ (3.4)	$ 2.4	$ (2.6)

RELATED PARTY TRANSACTIONS AN_3

RELATED PARTY TRANSACTIONS AND RELATIONSHIPS (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Related Party Transaction [Line Items]
Due to Related Party, Current	$ (366.3)		$ (366.3)		$ (616.9)
Evergy Metro
Related Party Transaction [Line Items]
Due to Related Party, Current	(160.8)		(160.8)		(272.5)
Evergy Metro | Evergy Missouri West
Related Party Transaction [Line Items]
Due from Related Party, Current	81.7		81.7		91.9
Evergy Metro | Evergy Missouri West | Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	24.9	$ 29.7	84.4	$ 86.9
Evergy Metro | Evergy Kansas Central
Related Party Transaction [Line Items]
Due from Related Party, Current	18.5		18.5		19.6
Evergy Metro | Evergy Kansas Central | Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	33.9	32.6	99.1	93.2
Evergy Metro | Evergy
Related Party Transaction [Line Items]
Due from Related Party, Current	16		16		15.9
Evergy Metro | Evergy | Income Tax Receivable
Related Party Transaction [Line Items]
Due to Related Party, Current	(22.3)		(22.3)		(6.8)
Evergy Metro | Related Party [Member]
Related Party Transaction [Line Items]
Due from Related Party, Current	116.2		116.2		128.5
Due to Related Party, Current	0		0		(1.1)
Evergy Metro | Related Party [Member] | Evergy Inc Money Pool
Related Party Transaction [Line Items]
Due from Related Party, Current	0		0		0
Due to Related Party, Current	0		0		0
Evergy Kansas Central
Related Party Transaction [Line Items]
Due to Related Party, Current	(184.5)		(184.5)		(244.7)
Evergy Kansas Central | Evergy Missouri West
Related Party Transaction [Line Items]
Due from Related Party, Current	11.6		11.6		11.3
Evergy Kansas Central | Evergy Missouri West | Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	7	8	24.5	24.1
Evergy Kansas Central | Evergy Metro
Related Party Transaction [Line Items]
Due to Related Party, Current	(18.5)		(18.5)		(19.6)
Evergy Kansas Central | Evergy Metro | Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	11.2	$ 10.8	34.8	$ 33.7
Evergy Kansas Central | Evergy
Related Party Transaction [Line Items]
Due to Related Party, Current	(13.2)		(13.2)		(274.5)
Evergy Kansas Central | Evergy | Income Taxes Payable
Related Party Transaction [Line Items]
Due from Related Party, Current	32.1		32.1		11.5
Evergy Kansas Central | Related Party [Member]
Related Party Transaction [Line Items]
Due from Related Party, Current	11.6		11.6		11.6
Due to Related Party, Current	(31.7)		(31.7)		(294.4)
Evergy Kansas Central | Related Party [Member] | Evergy Inc Money Pool
Related Party Transaction [Line Items]
Due from Related Party, Current	0		0
Due to Related Party, Current	$ 0		$ 0		$ (261.4)
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%		18%
Jeffrey Energy Center | Evergy Missouri West
Related Party Transaction [Line Items]
Jointly owned utility plant, proportionate ownership share	8%		8%
La Cygne Station | Evergy Kansas Central
Related Party Transaction [Line Items]
Jointly owned utility plant, proportionate ownership share	50%		50%

VARIABLE INTEREST ENTITIES - Na

VARIABLE INTEREST ENTITIES - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2024	Feb. 28, 2024
Variable Interest Entity [Line Items]
Interest rate	5.06%
Evergy Missouri West | SecuritizedBondsDue2040EMW [Member]
Variable Interest Entity [Line Items]
Long-term debt gross		$ 331.1
Evergy Missouri West | SecuritizedBondsDue2040EMW [Member] | Securitized Bonds
Variable Interest Entity [Line Items]
Long-term debt gross		$ 331.1
Interest rate		5.10%

VARIABLE INTEREST ENTITIES - As

VARIABLE INTEREST ENTITIES - Assets and Liabilities Related to VIE (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Assets:
Property, plant and equipment, net	$ 24,613.4	$ 23,728.7
Regulatory assets, includes $15.6 and $— related to variable interest entity, respectively	182.2	292.1
Other	20.4	0
Regulatory assets	1,769.8	1,795.3
Other	1.7	0
Liabilities:
Current maturities of long-term debt	404.8	800
Accrued interest	169.8	134.2
Long-term debt, net	11,571.1	11,053.3
Variable Interest Entities
Assets:
Property, plant and equipment, net	128.3	133.6
Regulatory assets, includes $15.6 and $— related to variable interest entity, respectively	15.6	0
Other	19.7
Regulatory assets	298.6	0
Other	1.7
Liabilities:
Current maturities of long-term debt	19.5	0
Accrued interest	10.2	0
Long-term debt, net	303.8	0
Evergy Kansas Central
Assets:
Property, plant and equipment, net	12,654.8	12,121.9
Regulatory assets, includes $15.6 and $— related to variable interest entity, respectively	81.3	127.7
Regulatory assets	493.9	505.2
Liabilities:
Accrued interest	71	79.7
Long-term debt, net	4,582.7	4,580.4
Evergy Kansas Central | Variable Interest Entities
Assets:
Property, plant and equipment, net	$ 128.3	$ 133.6

TAXES - Income Tax Expense (Det

TAXES - Income Tax Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current Federal Tax Expense (Benefit)	$ (3.8)	$ (17.3)	$ 7.1	$ (6.7)
Current State and Local Tax Expense (Benefit)	(13.9)	8.2	3.4	20.1
Current Income Tax Expense (Benefit), Total	(17.7)	(9.1)	10.5	13.4
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred Federal Income Tax Expense (Benefit)	47.8	25.7	52	38.9
Deferred State and Local Income Tax Expense (Benefit)	(8.3)	(5.9)	(22.4)	(14.8)
Deferred Income Tax Expense (Benefit), Total	39.5	19.8	29.6	24.1
Investment Tax Credits
Deferral	0	2.8	0	2.8
Investment tax credit amortization	(1.8)	(4.7)	(5.4)	(8.3)
Total	(1.8)	(1.9)	(5.4)	(5.5)
Income Tax Expense (Benefit), Total	$ 20	$ 8.8	$ 34.7	$ 32
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21%	21%	21%	21%
Effect Of [Abstract]
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Percent	(1.20%)	(1.80%)	(1.20%)	(1.60%)
State income taxes	(3.70%)	(0.50%)	(1.90%)	(0.20%)
Flow through depreciation for plant-related differences	(4.30%)	(9.90%)	(6.10%)	(8.70%)
Federal tax credits	(6.80%)	(6.70%)	(6.70%)	(5.90%)
Non-controlling interest	(0.30%)	(0.40%)	(0.30%)	(0.30%)
AFUDC equity	(0.40%)	0.20%	(0.40%)	(0.20%)
Amortization of federal investment tax credits	(0.60%)	(0.80%)	(0.60%)	(0.70%)
Valuation allowance	0%	1%	0%	0.60%
Officer compensation limitation	0.10%	0.30%	0.10%	0.30%
Other	0.30%	0%	0.30%	0.20%
Effective Income Tax Rate Reconciliation, Percent, Total	4.10%	2.40%	4.20%	4.50%
Evergy Kansas Central
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current Federal Tax Expense (Benefit)	$ (30.5)	$ (7)	$ (16)	$ 14.5
Current State and Local Tax Expense (Benefit)	(3.6)	3	3.7	7.9
Current Income Tax Expense (Benefit), Total	(34.1)	(4)	(12.3)	22.4
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred Federal Income Tax Expense (Benefit)	45.9	(1.1)	35.7	(11.8)
Deferred State and Local Income Tax Expense (Benefit)	(2.8)	(1.8)	(7.5)	(4.1)
Deferred Income Tax Expense (Benefit), Total	43.1	(2.9)	28.2	(15.9)
Investment Tax Credits
Deferral	0	2.9	0	2.9
Investment tax credit amortization	(1)	(3.9)	(2.9)	(5.8)
Total	(1)	(1)	(2.9)	(2.9)
Income Tax Expense (Benefit), Total	$ 8	$ (7.9)	$ 13	$ 3.6
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21%	21%	21%	21%
Effect Of [Abstract]
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Percent	(1.90%)	(4.30%)	(1.90%)	(3.10%)
State income taxes	(2.10%)	(2.30%)	(0.80%)	(0.50%)
Flow through depreciation for plant-related differences	(2.50%)	(6.20%)	(4.00%)	(4.50%)
Federal tax credits	(10.20%)	(16.30%)	(10.40%)	(11.70%)
Non-controlling interest	(0.40%)	(0.90%)	(0.40%)	(0.70%)
AFUDC equity	(0.50%)	0.30%	(0.50%)	(0.20%)
Amortization of federal investment tax credits	(0.40%)	(0.80%)	(0.40%)	(0.60%)
Valuation allowance	0%	2.80%	0%	1.10%
Other	0.10%	0.40%	0%	0.30%
Effective Income Tax Rate Reconciliation, Percent, Total	3.10%	(6.30%)	2.60%	1.10%
Evergy Metro
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current Federal Tax Expense (Benefit)	$ 28.5	$ 0.1	$ 34.4	$ (1.7)
Current State and Local Tax Expense (Benefit)	(5.3)	3.7	1.9	8.9
Current Income Tax Expense (Benefit), Total	23.2	3.8	36.3	7.2
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred Federal Income Tax Expense (Benefit)	7.4	23	18.2	43.5
Deferred State and Local Income Tax Expense (Benefit)	(3.4)	(2.2)	(9.6)	(5.8)
Deferred Income Tax Expense (Benefit), Total	4	20.8	8.6	37.7
Investment Tax Credits
Investment tax credit amortization	(0.8)	(0.9)	(2.4)	(2.6)
Income Tax Expense (Benefit), Total	$ 26.4	$ 23.7	$ 42.5	$ 42.3
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21%	21%	21%	21%
Effect Of [Abstract]
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Percent	(0.10%)	(0.10%)	(0.10%)	(0.10%)
State income taxes	(3.30%)	0.60%	(1.80%)	0.70%
Flow through depreciation for plant-related differences	(3.60%)	(8.70%)	(5.20%)	(8.50%)
Federal tax credits	(0.70%)	(0.30%)	(0.70%)	(0.20%)
AFUDC equity	(0.30%)	0.20%	(0.20%)	(0.30%)
Amortization of federal investment tax credits	(0.80%)	(0.90%)	(0.80%)	(0.90%)
Stock compensation	0%	0%	0.20%	0.20%
Officer compensation limitation	0.30%	0.50%	0.30%	0.50%
Other	0%	(0.10%)	0%	(0.10%)
Effective Income Tax Rate Reconciliation, Percent, Total	12.50%	12.20%	12.70%	12.30%