Evergy (EVRG) 10-K 26 Feb 25 2024 FY Annual report Financial data

Cover Page

Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2024	Feb. 19, 2025	Jun. 30, 2024
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 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 Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
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
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		230,009,344
Entity Central Index Key	0001711269
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Amendment Flag	false
Document Fiscal Year Focus	2024
Entity Public Float			$ 12,025,571,828
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 Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
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
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	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 Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
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
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		1
Entity Central Index Key	0000054476

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2024
Auditor [Line Items]
Auditor Location	Kansas City, Missouri
Auditor Name	DELOITTE & TOUCHE LLP
Auditor Firm ID	34

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
CURRENT ASSETS:
Cash and cash equivalents	$ 22	$ 27.7
Receivables, net of allowance for credit losses of $15.7 and $24.2, respectively	245.4	256.9
Accounts receivable pledged as collateral	401	342
Fuel inventory and supplies	867.4	776.2
Income taxes receivable	11.1	11.5
Regulatory assets, includes $15.9 and $— related to variable interest entity, respectively	180.9	292.1
Prepaid expenses	66.1	51.3
Other	45.4	31.4
Total Current Assets	1,839.3	1,789.1
PROPERTY, PLANT AND EQUIPMENT, NET, includes $126.5 and $133.6 related to variable interest entity, respectively	24,930.9	23,728.7
OTHER ASSETS:
Regulatory assets, includes $294.5 and $— related to variable interest entity, respectively	1,719.3	1,795.3
Nuclear decommissioning trust	879.8	766.4
Goodwill	2,336.6	2,336.6
Other	576.2	560
Total Other Assets	5,511.9	5,458.3
TOTAL ASSETS	32,282.1	30,976.1
CURRENT LIABILITIES:
Current maturities of long-term debt, includes $16.2 and $— related to variable interest entity, respectively	651.7	800
Commercial paper	1,207.6	951.8
Collateralized note payable	401	342
Accounts payable	613.8	616.9
Accrued taxes	159	156.7
Accrued interest, includes $1.3 and $— related to variable interest entity, respectively	136.4	134.2
Regulatory liabilities	173.8	183
Asset retirement obligations	28.7	40.3
Accrued compensation and benefits	73	74.5
Other	217.4	213.2
Total Current Liabilities	3,662.4	3,512.6
LONG-TERM LIABILITIES:
Long-term debt, net, includes $295.7 and $— related to variable interest entity, respectively	11,809.2	11,053.3
Deferred income taxes	2,035.7	2,097.9
Unamortized investment tax credits	162.8	170
Regulatory liabilities	2,672	2,542.5
Pension and post-retirement liability	371.3	464.1
Asset retirement obligations	1,268.3	1,162.8
Other	311.2	287.9
Total Long-Term Liabilities	18,630.5	17,778.5
Evergy, Inc. Shareholders' Equity:
Common stock	7,245.9	7,234.9
Retained earnings	2,732.9	2,457.8
Accumulated other comprehensive loss	(23.8)	(29.6)
Total Evergy, Inc. Shareholders' Equity	9,955	9,663.1
Noncontrolling Interests	34.2	21.9
Total Equity	9,989.2	9,685	$ 9,493.3	$ 9,241.7
TOTAL LIABILITIES AND EQUITY	32,282.1	30,976.1
Variable Interest Entities
CURRENT ASSETS:
Regulatory assets, includes $15.9 and $— related to variable interest entity, respectively	15.9	0
PROPERTY, PLANT AND EQUIPMENT, NET, includes $126.5 and $133.6 related to variable interest entity, respectively	126.5	133.6
OTHER ASSETS:
Regulatory assets, includes $294.5 and $— related to variable interest entity, respectively	294.5	0
CURRENT LIABILITIES:
Current maturities of long-term debt, includes $16.2 and $— related to variable interest entity, respectively	16.2	0
Accrued interest, includes $1.3 and $— related to variable interest entity, respectively	1.3	0
LONG-TERM LIABILITIES:
Long-term debt, net, includes $295.7 and $— related to variable interest entity, respectively	$ 295.7	$ 0

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Allowance for credit losses	$ 15.7	$ 24.2
Regulatory assets	180.9	292.1
PROPERTY, PLANT AND EQUIPMENT, NET, includes $126.5 and $133.6 related to variable interest entity, respectively	24,930.9	23,728.7
Current maturities of long-term debt	651.7	800
Long-term debt, net	$ 11,809.2	$ 11,053.3
Common stock - shares authorized (in shares)	600,000,000	600,000,000
Common stock - shares issued (in shares)	229,983,615	229,729,296
Variable Interest Entities
Regulatory assets	$ 15.9	$ 0
PROPERTY, PLANT AND EQUIPMENT, NET, includes $126.5 and $133.6 related to variable interest entity, respectively	126.5	133.6
Current maturities of long-term debt	16.2	0
Long-term debt, net	$ 295.7	$ 0

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
OPERATING REVENUES	$ 5,847.3	$ 5,508.2	$ 5,859.1
OPERATING EXPENSES:
Fuel and purchased power	1,479.9	1,494.8	1,821.2
SPP network transmission costs	370.9	302.6	323
Operating and maintenance	961.9	945.3	1,085.3
Depreciation and amortization	1,114	1,076.5	929.4
Taxes other than income tax	452.6	406.6	398.1
Sibley Unit 3 impairment loss and other regulatory disallowances	0	0	34.9
Total Operating Expenses	4,379.3	4,225.8	4,591.9
INCOME FROM OPERATIONS	1,468	1,282.4	1,267.2
OTHER INCOME (EXPENSE):
Investment earnings	4.6	29.7	9.4
Other income	38.9	40.6	29.9
Other expense	(40.4)	(75.1)	(97.3)
Total Other Income (Expense), Net	3.1	(4.8)	(58)
Interest expense	563.1	525.8	404
INCOME BEFORE INCOME TAXES	908	751.8	805.2
Income tax expense	30	15.6	47.5
Equity in earnings of equity method investees, net of income taxes	7.8	7.4	7.3
NET INCOME	885.8	743.6	765
Less: Net income attributable to noncontrolling interests	12.3	12.3	12.3
Net income attributable to Evergy, Inc.	$ 873.5	$ 731.3	$ 752.7
BASIC AND DILUTED EARNINGS PER AVERAGE COMMON SHARE OUTSTANDING ATTRIBUTABLE TO EVERGY, INC. (see Note 1)
Basic earnings per common share (in dollars per share)	$ 3.79	$ 3.18	$ 3.27
Diluted earnings per common share (in dollars per share)	$ 3.79	$ 3.17	$ 3.27
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Basic (in shares)	230.3	230	229.9
Diluted (in shares)	230.6	230.5	230.3
COMPREHENSIVE INCOME
NET INCOME	$ 885.8	$ 743.6	$ 765
Derivative hedging activity
Reclassification to expenses, net of tax	5.4	5.4	5.5
Derivative hedging activity, net of tax	5.4	5.4	5.5
Defined benefit pension plans
Net gain (loss) arising during period	0.7	(0.5)	5
Income tax (expense) benefit	(0.1)	0.1	(1.2)
Net gain (loss) arising during period, net of tax	0.6	(0.4)	3.8
Amortization of net (gains) losses included in net periodic benefit costs, net of tax	(0.2)	(0.1)	0.2
Change in unrecognized pension expense, net of tax	0.4	(0.5)	4
Total other comprehensive income	5.8	4.9	9.5
Comprehensive income	891.6	748.5	774.5
Less:  Comprehensive income attributable to noncontrolling interest	12.3	12.3	12.3
Comprehensive Income, Net of Tax, Attributable to Parent, Total	$ 879.3	$ 736.2	$ 762.2

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	$ 885.8	$ 743.6	$ 765
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	1,114	1,076.5	929.4
Amortization of nuclear fuel	56.5	62.4	55.5
Amortization of deferred refueling outage	17.2	18.2	22.3
Amortization of corporate-owned life insurance	23.8	25.1	25
Stock compensation	15.2	17.7	18.8
Net deferred income taxes and credits	(8.6)	(16.6)	7.3
Allowance for equity funds used during construction	(19.6)	(10.8)	(22.5)
Payments for asset retirement obligations	(12.1)	(21.8)	(13)
Equity in earnings of equity method investees, net of income taxes	(7.8)	(7.4)	(7.3)
Income from corporate-owned life insurance	(18.5)	(30)	(5.6)
Sibley Unit 3 impairment loss and other regulatory disallowances	0	0	34.9
Other	0	1.5	0.7
Changes in working capital items:
Accounts receivable	16.7	54.5	(59.8)
Accounts receivable pledged as collateral	(59)	17	(40)
Fuel inventory and supplies	(89.2)	(102.4)	(105.6)
Prepaid expenses and other current assets	156.5	136.6	(3.1)
Accounts payable	46	(47.2)	2.1
Accrued taxes	2.7	(8.6)	32.2
Other current liabilities	(80.7)	(43.8)	0.8
Changes in other assets	8.1	21.7	81
Changes in other liabilities	(63.3)	94	83.8
Cash Flows from Operating Activities	1,983.7	1,980.2	1,801.9
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(2,336.6)	(2,334)	(2,166.5)
Acquisition of Persimmon Creek, net of cash acquired	0	(217.9)	0
Purchase of securities - trusts	(175.5)	(58.7)	(50.5)
Sale of securities - trusts	138.5	35.1	27.3
Investment in corporate-owned life insurance	(15.6)	(16)	(16.5)
Proceeds from investment in corporate-owned life insurance	101.6	118.7	35.2
Other investing activities	25.8	1.1	18.8
Cash Flows used in Investing Activities	(2,261.8)	(2,471.7)	(2,152.2)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	255.8	(381.9)	172.9
Proceeds from term loan facility	0	0	500
Repayment of term loan facility	0	(500)	0
Collateralized short-term borrowings, net	59	(17)	40
Proceeds from long-term debt	1,414	2,444.8	567.7
Retirements of long-term debt	(811.5)	(439.5)	(410.9)
Borrowings against cash surrender value of corporate-owned life insurance	51.5	53.2	53.5
Repayment of borrowings against cash surrender value of corporate-owned life insurance	(76.1)	(89.8)	(28)
Cash dividends paid	(596.7)	(569.6)	(534.8)
Other financing activities	(15.7)	(6.2)	(11.1)
Cash Flows from Financing Activities	280.3	494	349.3
NET CHANGE IN CASH AND CASH EQUIVALENTS	2.2	2.5	(1)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	27.7	25.2	26.2
End of period	$ 29.9	$ 27.7	$ 25.2

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, 2021		229,299,900
Beginning balance at Dec. 31, 2021	$ 9,241.7	$ 7,205.5	$ 2,082.9	$ (44)	$ (2.7)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	765		752.7		12.3
Issuance of stock compensation and reinvested dividends, net of tax withholding (in shares)		246,205
Issuance of stock, net issuance costs	(5.2)	$ (5.2)
Dividends declared on common stock	(534.8)		(534.8)
Dividend equivalents declared	(2.3)		(2.3)
Stock compensation expense	18.1	18.1
Unearned compensation
Compensation expense recognized	0.7	0.7
Derivative hedging activity, net of tax	5.5			5.5
Change in unrecognized pension expense, net of tax	4			4
Other	0.6	$ 0.6
Ending balance (in shares) at Dec. 31, 2022		229,546,105
Ending 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	743.6		731.3		12.3
Issuance of stock compensation and reinvested dividends, net of tax withholding (in shares)		183,191
Issuance of stock, net issuance costs	(2.5)	$ (2.5)
Dividends declared on common stock	(569.6)		(569.6)
Dividend equivalents declared	(2.4)		(2.4)
Stock compensation expense	17.5	17.5
Unearned compensation
Compensation expense recognized	0.2	$ 0.2
Derivative hedging activity, net of tax	5.4			5.4
Change in unrecognized pension expense, net of tax	(0.5)			(0.5)
Ending balance (in shares) at Dec. 31, 2023		229,729,296
Ending 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	885.8		873.5		12.3
Issuance of stock compensation and reinvested dividends, net of tax withholding (in shares)		254,319
Issuance of stock, net issuance costs	(4.8)	$ (4.8)
Dividends declared on common stock	(596.7)		(596.7)
Dividend equivalents declared	(1.7)		(1.7)
Stock compensation expense	15.2	15.2
Unearned compensation
Derivative hedging activity, net of tax	5.4			5.4
Change in unrecognized pension expense, net of tax	0.4			0.4
Other	0.6	$ 0.6
Ending balance (in shares) at Dec. 31, 2024		229,983,615
Ending balance at Dec. 31, 2024	$ 9,989.2	$ 7,245.9	$ 2,732.9	$ (23.8)	$ 34.2

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Stockholders' Equity [Abstract]
Dividends declared on common stock (in dollars per share)	$ 2.595	$ 2.48	$ 2.33

Consolidated Balance Sheets - E

Consolidated Balance Sheets - Evergy Kansas Central, Inc - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
CURRENT ASSETS:
Cash and cash equivalents	$ 22	$ 27.7
Receivables, net of allowance for credit losses of $7.8 and $11.6, respectively	245.4	256.9
Accounts receivable pledged as collateral	401	342
Fuel inventory and supplies	867.4	776.2
Income taxes receivable	11.1	11.5
Regulatory assets	180.9	292.1
Prepaid expenses	66.1	51.3
Other	45.4	31.4
Total Current Assets	1,839.3	1,789.1
PROPERTY, PLANT AND EQUIPMENT, NET, includes $126.5 and $133.6 related to variable interest entity, respectively	24,930.9	23,728.7
OTHER ASSETS:
Regulatory assets	1,719.3	1,795.3
Nuclear decommissioning trust	879.8	766.4
Other	576.2	560
Total Other Assets	5,511.9	5,458.3
TOTAL ASSETS	32,282.1	30,976.1
CURRENT LIABILITIES:
Current maturities of long-term debt	651.7	800
Commercial paper	1,207.6	951.8
Collateralized note payable	401	342
Accounts payable	613.8	616.9
Accrued taxes	159	156.7
Accrued interest, includes $1.3 and $— related to variable interest entity, respectively	136.4	134.2
Regulatory liabilities	173.8	183
Asset retirement obligations	28.7	40.3
Accrued compensation and benefits	73	74.5
Other	217.4	213.2
Total Current Liabilities	3,662.4	3,512.6
LONG-TERM LIABILITIES:
Long-term debt, net	11,809.2	11,053.3
Deferred income taxes	2,035.7	2,097.9
Unamortized investment tax credits	162.8	170
Regulatory liabilities	2,672	2,542.5
Pension and post-retirement liability	371.3	464.1
Asset retirement obligations	1,268.3	1,162.8
Other	311.2	287.9
Total Long-Term Liabilities	18,630.5	17,778.5
Commitments and Contingencies (Note $15)
Evergy, Inc. Shareholders' Equity:
Common stock	7,245.9	7,234.9
Retained earnings	2,732.9	2,457.8
Total Evergy, Inc. Shareholders' Equity	9,955	9,663.1
Noncontrolling Interests	34.2	21.9
Total Equity	9,989.2	9,685
TOTAL LIABILITIES AND EQUITY	32,282.1	30,976.1
Evergy Kansas Central
CURRENT ASSETS:
Cash and cash equivalents	3.7	9.2
Receivables, net of allowance for credit losses of $7.8 and $11.6, respectively	133.1	171.8
Accounts receivable pledged as collateral	215	166
Fuel inventory and supplies	472.5	411.9
Income taxes receivable	11.4	11.5
Regulatory assets	79.7	127.7
Prepaid expenses	30.2	22.9
Other	9.2	13.2
Total Current Assets	978.2	945.8
PROPERTY, PLANT AND EQUIPMENT, NET, includes $126.5 and $133.6 related to variable interest entity, respectively	12,880.1	12,121.9
OTHER ASSETS:
Regulatory assets	446.6	505.2
Nuclear decommissioning trust	407.9	365.1
Other	296.3	288.6
Total Other Assets	1,150.8	1,158.9
TOTAL ASSETS	15,009.1	14,226.6
CURRENT LIABILITIES:
Current maturities of long-term debt	250	0
Commercial paper	797.3	230.4
Collateralized note payable	215	166
Accounts payable	281.5	244.7
Accrued taxes	109.7	111.1
Accrued interest, includes $1.3 and $— related to variable interest entity, respectively	79.2	79.7
Regulatory liabilities	76.6	104.1
Asset retirement obligations	16.5	22.2
Accrued compensation and benefits	35.4	37.6
Other	130.2	142.4
Total Current Liabilities	2,028.1	1,432.6
LONG-TERM LIABILITIES:
Long-term debt, net	4,333.5	4,580.4
Deferred income taxes	805.6	844.2
Unamortized investment tax credits	52.4	56.2
Regulatory liabilities	1,475.8	1,432.4
Pension and post-retirement liability	218.2	256.3
Asset retirement obligations	631.3	577.1
Other	179.3	155.5
Total Long-Term Liabilities	7,696.1	7,902.1
Commitments and Contingencies (Note $15)
Evergy, Inc. Shareholders' Equity:
Common stock	2,737.6	2,737.6
Retained earnings	2,513.1	2,132.4
Total Evergy, Inc. Shareholders' Equity	5,250.7	4,870
Noncontrolling Interests	34.2	21.9
Total Equity	5,284.9	4,891.9
TOTAL LIABILITIES AND EQUITY	15,009.1	14,226.6
Related Party [Member] | Evergy Kansas Central
CURRENT ASSETS:
Related party receivables	23.4	11.6
CURRENT LIABILITIES:
Accounts payable	36.7	294.4
Variable Interest Entities
CURRENT ASSETS:
Regulatory assets	15.9	0
PROPERTY, PLANT AND EQUIPMENT, NET, includes $126.5 and $133.6 related to variable interest entity, respectively	126.5	133.6
OTHER ASSETS:
Regulatory assets	294.5	0
CURRENT LIABILITIES:
Current maturities of long-term debt	16.2	0
Accrued interest, includes $1.3 and $— related to variable interest entity, respectively	1.3	0
LONG-TERM LIABILITIES:
Long-term debt, net	295.7	0
Variable Interest Entities | Evergy Kansas Central
CURRENT ASSETS:
PROPERTY, PLANT AND EQUIPMENT, NET, includes $126.5 and $133.6 related to variable interest entity, respectively	$ 126.5	$ 133.6

Consolidated Balance Sheets -_2

Consolidated Balance Sheets - Evergy Kansas Central, Inc (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Allowance for credit losses	$ 15.7	$ 24.2
Property, plant and equipment, net	$ 24,930.9	$ 23,728.7
Common stock - shares authorized (in shares)	600,000,000	600,000,000
Common stock - shares issued (in shares)	229,983,615	229,729,296
Evergy Kansas Central
Allowance for credit losses	$ 7.8	$ 11.6
Property, plant and equipment, net	$ 12,880.1	$ 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	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
OPERATING REVENUES	$ 5,847.3	$ 5,508.2	$ 5,859.1
OPERATING EXPENSES:
Fuel and purchased power	1,479.9	1,494.8	1,821.2
SPP network transmission costs	370.9	302.6	323
Operating and maintenance	961.9	945.3	1,085.3
Depreciation and amortization	1,114	1,076.5	929.4
Taxes other than income tax	452.6	406.6	398.1
Total Operating Expenses	4,379.3	4,225.8	4,591.9
INCOME FROM OPERATIONS	1,468	1,282.4	1,267.2
OTHER INCOME (EXPENSE):
Investment earnings (loss)	4.6	29.7	9.4
Other income	38.9	40.6	29.9
Other expense	(40.4)	(75.1)	(97.3)
Total other income (expense), net	3.1	(4.8)	(58)
Interest expense	563.1	525.8	404
INCOME BEFORE INCOME TAXES	908	751.8	805.2
Income tax expense	30	15.6	47.5
Equity in earnings of equity method investees, net of income taxes	7.8	7.4	7.3
NET INCOME	885.8	743.6	765
Less: Net income attributable to noncontrolling interests	12.3	12.3	12.3
Net income attributable to Evergy, Inc.	873.5	731.3	752.7
Evergy Kansas Central
OPERATING REVENUES	3,007.1	2,698.4	3,055.9
OPERATING EXPENSES:
Fuel and purchased power	557.1	592.6	855.5
SPP network transmission costs	370.9	302.6	323
Operating and maintenance	476	477.3	536.3
Depreciation and amortization	561.7	515.5	484.6
Taxes other than income tax	250.7	219.8	216.5
Total Operating Expenses	2,216.4	2,107.8	2,415.9
INCOME FROM OPERATIONS	790.7	590.6	640
OTHER INCOME (EXPENSE):
Investment earnings (loss)	2.7	3.4	(3.8)
Other income	28.7	34.3	14.4
Other expense	(18.7)	(38.7)	(39.6)
Total other income (expense), net	12.7	(1)	(29)
Interest expense	229.5	214.6	181.8
INCOME BEFORE INCOME TAXES	573.9	375	429.2
Income tax expense	12.2	(5.9)	12.3
Equity in earnings of equity method investees, net of income taxes	3.3	3.6	4
NET INCOME	565	384.5	420.9
Less: Net income attributable to noncontrolling interests	12.3	12.3	12.3
Net income attributable to Evergy, Inc.	$ 552.7	$ 372.2	$ 408.6

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows - Evergy Kansas Central, Inc - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	$ 885.8	$ 743.6	$ 765
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	1,114	1,076.5	929.4
Amortization of nuclear fuel	56.5	62.4	55.5
Amortization of deferred refueling outage	17.2	18.2	22.3
Amortization of corporate-owned life insurance	23.8	25.1	25
Stock compensation	15.2	17.7	18.8
Net deferred income taxes and credits	(8.6)	(16.6)	7.3
Allowance for equity funds used during construction	(19.6)	(10.8)	(22.5)
Payments for asset retirement obligations	(12.1)	(21.8)	(13)
Equity in earnings of equity method investees, net of income taxes	(7.8)	(7.4)	(7.3)
Income from corporate-owned life insurance	(18.5)	(30)	(5.6)
Other	0	1.5	0.7
Changes in working capital items:
Accounts receivable	16.7	54.5	(59.8)
Accounts receivable pledged as collateral	(59)	17	(40)
Fuel inventory and supplies	(89.2)	(102.4)	(105.6)
Prepaid expenses and other current assets	156.5	136.6	(3.1)
Accounts payable	46	(47.2)	2.1
Accrued taxes	2.7	(8.6)	32.2
Other current liabilities	(80.7)	(43.8)	0.8
Changes in other assets	8.1	21.7	81
Changes in other liabilities	(63.3)	94	83.8
Cash Flows from Operating Activities	1,983.7	1,980.2	1,801.9
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(2,336.6)	(2,334)	(2,166.5)
Acquisition of Persimmon Creek, net of cash acquired	0	(217.9)	0
Purchase of securities - trusts	(175.5)	(58.7)	(50.5)
Sale of securities - trusts	138.5	35.1	27.3
Investment in corporate-owned life insurance	(15.6)	(16)	(16.5)
Proceeds from investment in corporate-owned life insurance	101.6	118.7	35.2
Other investing activities	25.8	1.1	18.8
Cash Flows used in Investing Activities	(2,261.8)	(2,471.7)	(2,152.2)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	255.8	(381.9)	172.9
Collateralized short-term debt, net	59	(17)	40
Proceeds from long-term debt	1,414	2,444.8	567.7
Retirements of long-term debt	(811.5)	(439.5)	(410.9)
Borrowings against cash surrender value of corporate-owned life insurance	51.5	53.2	53.5
Repayment of borrowings against cash surrender value of corporate-owned life insurance	(76.1)	(89.8)	(28)
Cash dividends paid	(596.7)	(569.6)	(534.8)
Other financing activities	(15.7)	(6.2)	(11.1)
Cash Flows from Financing Activities	280.3	494	349.3
NET CHANGE IN CASH AND CASH EQUIVALENTS	2.2	2.5	(1)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	27.7	25.2	26.2
End of period	29.9	27.7	25.2
Evergy Kansas Central
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	565	384.5	420.9
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	561.7	515.5	484.6
Amortization of nuclear fuel	28.1	30.9	27.6
Amortization of deferred refueling outage	8.6	9.1	10.6
Amortization of corporate-owned life insurance	23.8	25.1	25
Net deferred income taxes and credits	1.3	(38.4)	(87.4)
Allowance for equity funds used during construction	(12.5)	(6.4)	(8.5)
Payments for asset retirement obligations	(7.4)	(9.8)	(6.9)
Equity in earnings of equity method investees, net of income taxes	(3.3)	(3.6)	(4)
Income from corporate-owned life insurance	(18.5)	(30)	(5.6)
Other	(5.5)	(5.5)	(5.5)
Changes in working capital items:
Accounts receivable	30.6	70.6	(11)
Accounts receivable pledged as collateral	(49)	19	(32)
Fuel inventory and supplies	(60.2)	(61.5)	(65.7)
Prepaid expenses and other current assets	73.1	65.3	102.7
Accounts payable	42.4	(26.4)	2.9
Accrued taxes	(1.3)	(25.9)	29
Other current liabilities	(105.8)	(26)	22.8
Changes in other assets	(15.4)	4.6	42.3
Changes in other liabilities	(15.7)	126.8	4
Cash Flows from Operating Activities	1,040	1,017.9	945.8
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(1,274.6)	(1,196.8)	(918.9)
Acquisition of Persimmon Creek, net of cash acquired	0	(217.9)	0
Purchase of securities - trusts	(52.5)	(25.6)	(24.9)
Sale of securities - trusts	19.1	8.3	11.2
Investment in corporate-owned life insurance	(15.6)	(16)	(16.4)
Proceeds from investment in corporate-owned life insurance	97.6	117.4	35.2
Other investing activities	28.8	13.3	11
Cash Flows used in Investing Activities	(1,197.2)	(1,317.3)	(902.8)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	566.9	(542.4)	366.1
Collateralized short-term debt, net	49	(19)	32
Proceeds from long-term debt	0	690.5	0
Retirements of long-term debt	0	(50)	0
Net money pool borrowings	(261.4)	261.4	0
Borrowings against cash surrender value of corporate-owned life insurance	48.3	50.2	51.6
Repayment of borrowings against cash surrender value of corporate-owned life insurance	(72.2)	(88.6)	(28)
Cash dividends paid	(172)	0	(455)
Other financing activities	(6.9)	(2.2)	(4.1)
Cash Flows from Financing Activities	151.7	299.9	(37.4)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(5.5)	0.5	5.6
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	9.2	8.7	3.1
End of period	$ 3.7	$ 9.2	$ 8.7

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, 2021		229,299,900				1
Beginning balance at Dec. 31, 2021	$ 9,241.7	$ 7,205.5	$ 2,082.9	$ (2.7)	$ 4,541.5	$ 2,737.6	$ 1,806.6	$ (2.7)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	765		752.7	12.3	420.9		408.6	12.3
Dividends declared on common stock	(534.8)		(534.8)		(455)		(455)
Ending balance (in shares) at Dec. 31, 2022		229,546,105				1
Ending 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	743.6		731.3	12.3	384.5		372.2	12.3
Dividends declared on common stock	(569.6)		(569.6)
Ending balance (in shares) at Dec. 31, 2023		229,729,296				1
Ending 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	885.8		873.5	12.3	565		552.7	12.3
Dividends declared on common stock	(596.7)		(596.7)		(172)		(172)
Ending balance (in shares) at Dec. 31, 2024		229,983,615				1
Ending balance at Dec. 31, 2024	$ 9,989.2	$ 7,245.9	$ 2,732.9	$ 34.2	$ 5,284.9	$ 2,737.6	$ 2,513.1	$ 34.2

Consolidated Balance Sheets -_3

Consolidated Balance Sheets - Evergy Metro, Inc - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
CURRENT ASSETS:
Cash and cash equivalents	$ 22	$ 27.7
Receivables, net of allowance for credit losses of $5.8 and $7.9, respectively	245.4	256.9
Accounts receivable pledged as collateral	401	342
Fuel inventory and supplies	867.4	776.2
Income taxes receivable	11.1	11.5
Regulatory assets	180.9	292.1
Other	45.4	31.4
Total Current Assets	1,839.3	1,789.1
Property, plant and equipment, net	24,930.9	23,728.7
OTHER ASSETS:
Regulatory assets	1,719.3	1,795.3
Nuclear decommissioning trust	879.8	766.4
Other	576.2	560
Total Other Assets	5,511.9	5,458.3
TOTAL ASSETS	32,282.1	30,976.1
CURRENT LIABILITIES:
Current maturities of long-term debt	651.7	800
Commercial paper	1,207.6	951.8
Collateralized note payable	401	342
Accounts payable	613.8	616.9
Accrued taxes	159	156.7
Accrued interest, includes $1.3 and $— related to variable interest entity, respectively	136.4	134.2
Regulatory liabilities	173.8	183
Asset retirement obligations	28.7	40.3
Accrued compensation and benefits	73	74.5
Other	217.4	213.2
Total Current Liabilities	3,662.4	3,512.6
LONG-TERM LIABILITIES:
Long-term debt, net	11,809.2	11,053.3
Deferred income taxes	2,035.7	2,097.9
Unamortized investment tax credits	162.8	170
Regulatory liabilities	2,672	2,542.5
Pension and post-retirement liability	371.3	464.1
Asset retirement obligations	1,268.3	1,162.8
Other	311.2	287.9
Total Long-Term Liabilities	18,630.5	17,778.5
Commitments and Contingencies (Note $15)
EQUITY:
Common stock	7,245.9	7,234.9
Retained earnings	2,732.9	2,457.8
Accumulated other comprehensive loss	(23.8)	(29.6)
Total Evergy, Inc. Shareholders' Equity	9,955	9,663.1
TOTAL LIABILITIES AND EQUITY	32,282.1	30,976.1
Evergy Metro
CURRENT ASSETS:
Cash and cash equivalents	3.7	3.3
Receivables, net of allowance for credit losses of $5.8 and $7.9, respectively	58.1	55
Accounts receivable pledged as collateral	136	126
Fuel inventory and supplies	283.8	264.6
Regulatory assets	42.7	53.2
Prepaid expenses	25.6	20.9
Other	25.5	14.7
Total Current Assets	701.5	666.2
Property, plant and equipment, net	8,292.4	8,131.2
OTHER ASSETS:
Regulatory assets	429.4	380.8
Nuclear decommissioning trust	471.9	401.3
Other	81.5	77
Total Other Assets	982.8	859.1
TOTAL ASSETS	9,976.7	9,656.5
CURRENT LIABILITIES:
Current maturities of long-term debt	350	0
Commercial paper	158.7	423.3
Collateralized note payable	136	126
Accounts payable	252.8	272.5
Accrued taxes	52.4	45.7
Accrued interest, includes $1.3 and $— related to variable interest entity, respectively	32.1	27.4
Regulatory liabilities	38.5	43
Asset retirement obligations	11.8	16
Accrued compensation and benefits	37.6	36.9
Other	69.8	58.3
Total Current Liabilities	1,139.9	1,050.2
LONG-TERM LIABILITIES:
Long-term debt, net	2,873.4	2,924.4
Deferred income taxes	755.3	797.2
Unamortized investment tax credits	108	111.3
Regulatory liabilities	1,008.4	860.2
Pension and post-retirement liability	137	190.8
Asset retirement obligations	490.9	444.4
Other	87.6	85
Total Long-Term Liabilities	5,460.6	5,413.3
Commitments and Contingencies (Note $15)
EQUITY:
Common stock	1,563.1	1,563.1
Retained earnings	1,809.7	1,626.2
Accumulated other comprehensive loss	3.4	3.7
Total Evergy, Inc. Shareholders' Equity	3,376.2	3,193
TOTAL LIABILITIES AND EQUITY	9,976.7	9,656.5
Related Party [Member] | Evergy Metro
CURRENT ASSETS:
Related party receivables	126.1	128.5
CURRENT LIABILITIES:
Accounts payable	$ 0.2	$ 1.1

Consolidated Balance Sheets -_4

Consolidated Balance Sheets - Evergy Metro, Inc (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Allowance for credit losses	$ 15.7	$ 24.2
Common stock - shares authorized (in shares)	600,000,000	600,000,000
Common stock - shares issued (in shares)	229,983,615	229,729,296
Evergy Metro
Allowance for credit losses	$ 5.8	$ 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	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
OPERATING REVENUES	$ 5,847.3	$ 5,508.2	$ 5,859.1
OPERATING EXPENSES:
Fuel and purchased power	1,479.9	1,494.8	1,821.2
Operating and maintenance	961.9	945.3	1,085.3
Depreciation and amortization	1,114	1,076.5	929.4
Taxes other than income tax	452.6	406.6	398.1
Other regulatory disallowances		0	5.5
Total Operating Expenses	4,379.3	4,225.8	4,591.9
INCOME FROM OPERATIONS	1,468	1,282.4	1,267.2
OTHER INCOME (EXPENSE):
Investment earnings	4.6	29.7	9.4
Other income	38.9	40.6	29.9
Other expense	(40.4)	(75.1)	(97.3)
Total other income (expense), net	3.1	(4.8)	(58)
Interest expense	563.1	525.8	404
INCOME BEFORE INCOME TAXES	908	751.8	805.2
Income tax expense	30	15.6	47.5
Net income attributable to Evergy, Inc.	873.5	731.3	752.7
Derivative hedging activity
Reclassification to expenses, net of tax	5.4	5.4	5.5
Derivative hedging activity, net of tax	5.4	5.4	5.5
Total other comprehensive income	5.8	4.9	9.5
Comprehensive Income, Net of Tax, Attributable to Parent, Total	879.3	736.2	762.2
Evergy Metro
OPERATING REVENUES	1,893.7	1,889	1,970.6
OPERATING EXPENSES:
Fuel and purchased power	552.8	530.9	630.7
Operating and maintenance	281.7	284.1	334.4
Depreciation and amortization	400.6	416.6	337.8
Taxes other than income tax	147.4	132.8	130
Other regulatory disallowances	0	0	5.5
Total Operating Expenses	1,382.5	1,364.4	1,438.4
INCOME FROM OPERATIONS	511.2	524.6	532.2
OTHER INCOME (EXPENSE):
Investment earnings	4.9	3.8	2.9
Other income	8.9	5.6	15.2
Other expense	(12.5)	(27)	(33.9)
Total other income (expense), net	1.3	(17.6)	(15.8)
Interest expense	147.1	135.8	110.7
INCOME BEFORE INCOME TAXES	365.4	371.2	405.7
Income tax expense	40.9	39.2	50.3
Net income attributable to Evergy, Inc.	324.5	332	355.4
Derivative hedging activity
Reclassification to expenses, net of tax	(0.3)	(0.3)	(0.3)
Derivative hedging activity, net of tax	(0.3)	(0.3)	(0.3)
Total other comprehensive income	(0.3)	(0.3)	(0.3)
Comprehensive Income, Net of Tax, Attributable to Parent, Total	$ 324.2	$ 331.7	$ 355.1

Consolidated Statements of Ca_3

Consolidated Statements of Cash Flows - Evergy Metro, Inc - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	$ 885.8	$ 743.6	$ 765
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	1,114	1,076.5	929.4
Amortization of nuclear fuel	56.5	62.4	55.5
Amortization of deferred refueling outage	17.2	18.2	22.3
Net deferred income taxes and credits	(8.6)	(16.6)	7.3
Allowance for equity funds used during construction	(19.6)	(10.8)	(22.5)
Payments for asset retirement obligations	(12.1)	(21.8)	(13)
Other regulatory disallowances		0	5.5
Other	0	1.5	0.7
Changes in working capital items:
Accounts receivable	16.7	54.5	(59.8)
Accounts receivable pledged as collateral	(59)	17	(40)
Fuel inventory and supplies	(89.2)	(102.4)	(105.6)
Prepaid expenses and other current assets	156.5	136.6	(3.1)
Accounts payable	46	(47.2)	2.1
Accrued taxes	2.7	(8.6)	32.2
Other current liabilities	(80.7)	(43.8)	0.8
Changes in other assets	8.1	21.7	81
Changes in other liabilities	(63.3)	94	83.8
Cash Flows from Operating Activities	1,983.7	1,980.2	1,801.9
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(2,336.6)	(2,334)	(2,166.5)
Purchase of securities - trusts	(175.5)	(58.7)	(50.5)
Sale of securities - trusts	138.5	35.1	27.3
Other investing activities	25.8	1.1	18.8
Cash Flows used in Investing Activities	(2,261.8)	(2,471.7)	(2,152.2)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	255.8	(381.9)	172.9
Collateralized short-term debt, net	59	(17)	40
Proceeds from long-term debt	1,414	2,444.8	567.7
Retirements of long-term debt	(811.5)	(439.5)	(410.9)
Cash dividends paid	(596.7)	(569.6)	(534.8)
Other financing activities	(15.7)	(6.2)	(11.1)
Cash Flows from Financing Activities	280.3	494	349.3
NET CHANGE IN CASH AND CASH EQUIVALENTS	2.2	2.5	(1)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	27.7	25.2	26.2
End of period	29.9	27.7	25.2
Evergy Metro
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	324.5	332	355.4
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	400.6	416.6	337.8
Amortization of nuclear fuel	28.4	31.5	27.9
Amortization of deferred refueling outage	8.6	9.1	11.7
Net deferred income taxes and credits	(0.4)	22.3	68.1
Allowance for equity funds used during construction	(7.1)	(4.4)	(14.2)
Payments for asset retirement obligations	(4.3)	(8.6)	(5.3)
Other regulatory disallowances	0	0	5.5
Other	(0.4)	(0.4)	(0.4)
Changes in working capital items:
Accounts receivable	10.7	(0.2)	5.1
Accounts receivable pledged as collateral	(10)	(2)	(8)
Fuel inventory and supplies	(19.2)	(24)	(29.6)
Prepaid expenses and other current assets	(0.5)	(15.3)	(6.2)
Accounts payable	4.2	(7.3)	(43.2)
Accrued taxes	6.7	5.4	1.7
Other current liabilities	2.3	(19.8)	(30.6)
Changes in other assets	(13.1)	14.2	59.1
Changes in other liabilities	(9)	(5.9)	(3.7)
Cash Flows from Operating Activities	722	743.2	731.1
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(619.7)	(757.4)	(780.9)
Purchase of securities - trusts	(123)	(33.1)	(25.6)
Sale of securities - trusts	119.5	26.8	16.1
Net money pool lending	0	31
Net money pool lending			124
Other investing activities	3.6	3.5	6.2
Cash Flows used in Investing Activities	(619.6)	(729.2)	(660.2)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	(264.6)	312.3	111
Collateralized short-term debt, net	10	2	8
Proceeds from long-term debt	296.8	375.2	23.4
Retirements of long-term debt	0	(379.5)	(23.4)
Cash dividends paid	(141)	(325)	(190)
Other financing activities	(3.2)	1.2	1.1
Cash Flows from Financing Activities	(102)	(13.8)	(69.9)
NET CHANGE IN CASH AND CASH EQUIVALENTS	0.4	0.2	1
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	3.3	3.1	2.1
End of period	$ 3.7	$ 3.3	$ 3.1

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, 2021		229,299,900			1
Beginning balance at Dec. 31, 2021	$ 9,241.7	$ 7,205.5	$ 2,082.9	$ 3,021.2	$ 1,563.1	$ 1,453.8	$ 4.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	765		752.7	355.4		355.4
Dividends declared on common stock	(534.8)		(534.8)	(190)		(190)
Derivative hedging activity, net of tax	5.5			(0.3)			(0.3)
Ending balance (in shares) at Dec. 31, 2022		229,546,105			1
Ending 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	743.6		731.3	332		332
Dividends declared on common stock	(569.6)		(569.6)	(325)		(325)
Derivative hedging activity, net of tax	5.4			(0.3)			(0.3)
Ending balance (in shares) at Dec. 31, 2023		229,729,296			1
Ending 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	885.8		873.5	324.5		324.5
Dividends declared on common stock	(596.7)		(596.7)	(141)		(141)
Derivative hedging activity, net of tax	5.4			(0.3)			(0.3)
Ending balance (in shares) at Dec. 31, 2024		229,983,615			1
Ending balance at Dec. 31, 2024	$ 9,989.2	$ 7,245.9	$ 2,732.9	$ 3,376.2	$ 1,563.1	$ 1,809.7	$ 3.4

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2024
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Organization Evergy is a public utility holding company incorporated in 2017 and headquartered in Kansas City, Missouri. Evergy operates primarily through the following wholly-owned direct subsidiaries listed below. • Evergy Kansas Central, Inc. (Evergy Kansas Central) is an integrated, regulated electric utility that provides electricity to customers in the state of Kansas. Evergy Kansas Central has one active wholly-owned subsidiary with significant operations, Evergy Kansas South, Inc. (Evergy Kansas South). • Evergy Metro, Inc. (Evergy Metro) is an integrated, regulated electric utility that provides electricity to customers in the states of Missouri and Kansas. • Evergy Missouri West, Inc. (Evergy Missouri West) is an integrated, regulated electric utility that provides electricity to customers in the state of Missouri. • Evergy Transmission Company, LLC (Evergy Transmission Company) owns 13.5% of Transource Energy, LLC (Transource) with the remaining 86.5% owned by AEP Transmission Holding Company, LLC, a subsidiary of American Electric Power Company, Inc. (AEP). Transource is focused on the development of competitive electric transmission projects. Evergy Transmission Company accounts for its investment in Transource under the equity method. Evergy Kansas Central also owns a 50% interest in Prairie Wind Transmission, LLC (Prairie Wind), which is a joint venture between Evergy Kansas Central and subsidiaries of AEP and Berkshire Hathaway Energy Company. Prairie Wind owns a 108-mile, 345 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. Principles of Consolidation Each of Evergy's, Evergy Kansas Central's and Evergy Metro's consolidated financial statements includes the accounts of their subsidiaries and variable interest entities (VIEs) of which they are the primary beneficiary. Undivided interests in jointly-owned generation facilities are included on a proportionate basis. Intercompany transactions have been eliminated. The Evergy Companies assess financial performance and allocate resources on a consolidated basis (i.e., operate in one segment). Evergy Metro elected not to apply "push-down accounting" related to the merger that created Evergy in 2018, whereby the adjustments of assets and liabilities to fair value and the resulting goodwill would be recorded on the financial statements of the acquired subsidiary. These adjustments for Evergy Metro, as well as those related to the other acquired assets and liabilities from the merger are only reflected on Evergy's consolidated financial statements. Use of Estimates The process of preparing financial statements in conformity with generally accepted accounting principles (GAAP) requires the use of estimates and assumptions that affect the reported amounts of certain types of assets, liabilities, revenues and expenses. Such estimates primarily relate to unsettled transactions and events as of the date of the financial statements. Accordingly, upon settlement, actual results may differ from estimated amounts. Cash, 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 19 for additional information on the VIE. The following table summarizes the cash, cash equivalents and restricted cash included on Evergy's consolidated balance sheet. December 31 2024 2023 Evergy (millions) Current assets Cash and cash equivalents $ 22.0 $ 27.7 Other 6.2 — Other assets Other 1.7 — Total cash, cash equivalents and restricted cash $ 29.9 $ 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. December 31 2024 2023 Evergy (millions) Fuel inventory $ 264.2 $ 257.3 Supplies 603.2 518.9 Fuel inventory and supplies $ 867.4 $ 776.2 Evergy Kansas Central Fuel inventory $ 154.2 $ 138.6 Supplies 318.3 273.3 Fuel inventory and supplies $ 472.5 $ 411.9 Evergy Metro Fuel inventory $ 71.9 $ 81.5 Supplies 211.9 183.1 Fuel inventory and supplies $ 283.8 $ 264.6 Property, Plant and Equipment The Evergy Companies record the value of property, plant and equipment, including that of VIEs, at cost. For plant, cost includes contracted services, direct labor and materials, indirect charges for engineering and supervision and an allowance for funds used during construction (AFUDC). AFUDC represents the allowed cost of capital used to finance utility construction activity. AFUDC equity funds are included as a non-cash item in other income and AFUDC borrowed funds are a reduction of interest expense. AFUDC is computed by applying a composite rate to qualified construction work in progress. The rates used to compute gross AFUDC are compounded semi-annually. The amounts of the Evergy Companies' AFUDC for borrowed and equity funds are detailed in the following table. 2024 2023 2022 Evergy (millions) AFUDC borrowed funds $ 41.8 $ 39.3 $ 15.8 AFUDC equity funds 19.6 10.8 22.5 Total $ 61.4 $ 50.1 $ 38.3 Evergy Kansas Central AFUDC borrowed funds $ 24.7 $ 22.2 $ 6.9 AFUDC equity funds 12.5 6.4 8.5 Total $ 37.2 $ 28.6 $ 15.4 Evergy Metro AFUDC borrowed funds $ 11.6 $ 11.8 $ 6.5 AFUDC equity funds 7.1 4.4 14.2 Total $ 18.7 $ 16.2 $ 20.7 The average rates used in the calculation of AFUDC are detailed in the following table. 2024 2023 2022 Evergy Kansas Central 5.2% 5.7% 3.1% Evergy Metro 5.8% 5.2% 5.7% Evergy Missouri West 5.1% 5.6% 2.3% When property units are retired or otherwise disposed, the original cost, net of salvage, is charged to accumulated depreciation. Repair of property and replacement of items not considered to be units of property are expensed as incurred, except for planned refueling and maintenance outages at Wolf Creek Generating Station (Wolf Creek). As authorized by regulators, the incremental maintenance cost incurred for such outages is deferred and amortized to expense ratably over the period between planned outages. Depreciation and Amortization Depreciation and amortization of utility plant other than nuclear fuel is computed using the straight-line method over the estimated lives of depreciable property based on rates approved by state regulatory authorities. Annual depreciation rates average approximately 3%. See Note 7 for more details. Nuclear fuel is amortized to fuel expense based on the quantity of heat produced during the generation of electricity. The depreciable lives of Evergy's, Evergy Kansas Central's and Evergy Metro's property, plant and equipment are detailed in the following table. Evergy Evergy Kansas Central Evergy Metro (years) Generating facilities 5 to 66 5 to 66 7 to 58 Transmission facilities 27 to 66 29 to 63 27 to 64 Distribution facilities 10 to 63 13 to 61 10 to 54 Other 5 to 57 5 to 57 8 to 37 Abandoned Plant When the Evergy Companies retire utility plant, the original cost, net of salvage, is charged to accumulated depreciation. However, when it becomes probable an asset will be retired significantly in advance of its original expected useful life and in the near term, the cost of the asset and related accumulated depreciation is recognized as a separate asset and a probable abandonment. If the asset is still in service, the net amount is classified as plant to be retired, net on the consolidated balance sheets. If the asset is no longer in service, the net amount is classified as a regulatory asset on the consolidated balance sheets. The Evergy Companies must also assess the probability of full recovery of the remaining net book value of the abandonment. The net book value that may be retained as an asset on the balance sheet for the abandonment is dependent upon amounts that may be recovered through regulated rates, including any return. An impairment charge, if any, would equal the difference between the remaining net book value of the asset and the present value of the future revenues expected from the asset. Evergy Missouri West retired its Sibley Station in 2018 and the retirement of Sibley Unit 3 met the criteria to be considered an abandonment. Evergy had classified the remaining net book value of Sibley Unit 3 as retired generation facilities within regulatory assets on its consolidated balance sheet. In 2022, the MPSC issued an amended final rate order determining that Evergy Missouri West be allowed to collect its existing investment in Sibley Unit 3 from customers over eight years but will not be allowed to collect the return on its unrecovered investment in Sibley Unit 3. As a result of the order, Evergy Missouri West recorded a $26.7 million impairment loss on Sibley Unit 3 in 2022. Nuclear Plant Decommissioning Costs Nuclear plant decommissioning cost estimates are based on either the immediate dismantling method or the deferred dismantling method as determined by the State Corporation Commission of the State of Kansas (KCC) and Public Service Commission of the State of Missouri (MPSC) and include the costs of decontamination, dismantlement and site restoration. Based on these cost estimates, Evergy Kansas Central and Evergy Metro each contribute to a tax-qualified trust fund to be used to decommission Wolf Creek. Related liabilities for decommissioning are included on Evergy's, Evergy Kansas Central's and Evergy Metro's consolidated balance sheets in asset retirement obligations (AROs). As a result of the authorized regulatory treatment and related regulatory accounting, differences between the fair value of the assets held in the nuclear decommissioning trust and the amounts recorded for the accumulated accretion and depreciation expense associated with the decommissioning ARO are recorded as a regulatory liability on Evergy's, Evergy Kansas Central's and Evergy Metro's consolidated balance sheets. See Note 6 for discussion of AROs including those associated with nuclear plant decommissioning costs. Regulatory Accounting Accounting standards are applied that recognize the economic effects of rate regulation. Accordingly, regulatory assets and liabilities have been recorded when required by a regulatory order or based on regulatory precedent. See Note 4 for additional information concerning regulatory matters. Cash Surrender Value of Life Insurance Amounts related to corporate-owned life insurance (COLI) are recorded on the consolidated balance sheets in other long-term assets and are detailed in the following table for Evergy. Substantially all of Evergy's COLI-related balances relate to Evergy Kansas Central's COLI activity. December 31 2024 2023 Evergy (millions) Cash surrender value of policies $ 1,322.6 $ 1,349.9 Borrowings against policies (1,196.2) (1,221.1) Corporate-owned life insurance, net $ 126.4 $ 128.8 Increases in cash surrender value and death benefits are recorded in other income in the Evergy Companies' consolidated statements of income and comprehensive income. Interest expense incurred on policy loans is offset against the policy income. Income from death benefits is highly variable from period to period. Fair Value of Financial Instruments The following methods and assumptions were used to estimate the fair value of the following financial instruments for which it was practicable to estimate that value. Nuclear decommissioning trust - The Evergy Companies' nuclear decommissioning trust assets are recorded at fair value based on quoted market prices of the investments held by the fund and/or valuation models. Derivative instruments - The Evergy Companies' derivative instruments are recorded at fair value based on quoted market prices for exchange-traded derivative instruments, quoted prices for similar contracts and/or valuation models. Pension plans - For financial reporting purposes, the market value of plan assets is the fair value based on quoted market prices of the investments held by the fund and/or valuation models. Derivative Instruments The Evergy Companies record derivative instruments on the balance sheet at fair value in accordance with GAAP. The Evergy Companies enter into derivative contracts to manage risk exposure to commodity price and interest rate fluctuations and also for trading purposes. See Note 13 for additional information regarding derivative financial instruments and hedging activities. Revenue Recognition The Evergy Companies recognize revenue on the sale of electricity to customers over time as the service is provided in the amount they have the right to invoice. Revenues recorded include electric services provided but not yet billed by the Evergy Companies. Unbilled revenues are recorded for kWh usage in the period following the customers' billing cycle to the end of the month. This estimate is based on net system kWh usage less actual billed kWhs. The Evergy Companies' estimated unbilled kWhs are allocated and priced by regulatory jurisdiction across the rate classes based on actual billing rates. The Evergy Companies' unbilled revenue estimate is affected by factors including fluctuations in energy demand, weather, line losses and changes in the composition of customer classes. See Note 3 for the balance of unbilled receivables for each of Evergy, Evergy Kansas Central and Evergy Metro as of December 31, 2024 and 2023. The Evergy Companies also collect sales taxes and franchise fees from customers concurrent with revenue-producing activities that are levied by state and local governments. These items are excluded from revenue, and thus are not reflected on the consolidated statements of income and comprehensive income for Evergy, Evergy Kansas Central and Evergy Metro. See Note 2 for additional details regarding revenue recognition from sales of electricity by the Evergy Companies. Allowance for Credit Losses Historical loss information generally provides the basis for the Evergy Companies' assessment of expected credit losses. The Evergy Companies use an aging of accounts receivable method to assess historical loss information. When historical experience may not fully reflect the Evergy Companies' expectations about the future, the Evergy Companies will adjust historical loss information, as necessary, to reflect the current conditions and reasonable and supportable forecasts not already reflected in the historical loss information. Receivables are charged off when they are deemed uncollectible, which is based on a number of factors including specific facts surrounding an account and management's judgment. Asset Impairments Long-lived assets and finite-lived intangible assets subject to amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If the sum of the undiscounted expected future cash flows from an asset to be held and used is less than the carrying value of the asset, an asset impairment must be recognized in the financial statements. The amount of impairment recognized is the excess of the carrying value of the asset over its fair value. Goodwill and indefinite lived intangible assets are tested for impairment annually and when an event occurs indicating the possibility that an impairment exists. The annual test must be performed at the same time each year. The goodwill impairment test consists of comparing the fair value of a reporting unit to its carrying amount, including goodwill, to identify potential impairment. In the event that the carrying amount exceeds the fair value of the reporting unit, an impairment loss is recognized for the difference between the carrying amount of the reporting unit and its fair value. See Note 5 for additional details on goodwill. Income Taxes Income taxes are accounted for using the asset/liability approach. Deferred tax assets and liabilities are determined based on the temporary differences between the financial reporting and tax bases of assets and liabilities, applying enacted statutory tax rates in effect for the year in which the differences are expected to reverse. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion of the deferred tax assets will not be realized. The Evergy Companies recognize tax benefits based on a "more-likely-than-not" recognition threshold. In addition, the Evergy Companies recognize interest accrued related to unrecognized tax benefits in interest expense and penalties in operating expenses. Evergy files a consolidated federal income tax return as well as unitary and combined income tax returns in several state jurisdictions with Kansas and Missouri being the most significant. Income taxes for consolidated or combined subsidiaries are allocated to the subsidiaries based on separate company computations of income or loss. Evergy Kansas Central's and Evergy Metro's income tax provisions include taxes allocated based on their separate company's income or loss. The Evergy Companies have established a net regulatory liability for future refunds to be made to customers for amounts collected from customers in excess of income taxes in current rates. Tax credits are recognized in the year generated except for certain Evergy Kansas Central, Evergy Metro and Evergy Missouri West investment tax credits that have been deferred and amortized over the remaining service lives of the related properties. Other Income (Expense), Net The Evergy Companies' other income includes income from AFUDC equity funds. See "Property, Plant and Equipment" within this Note 1 for these amounts for 2024, 2023 and 2022. In 2022, Evergy's investment earnings included a realized loss of $16.3 million related to Evergy's equity investment in an early-stage energy solutions company. The table below shows the detail of other expense for each of the Evergy Companies. 2024 2023 2022 Evergy (millions) Non-service cost component of net benefit cost $ (16.6) $ (51.2) $ (62.9) Corporate-owned life insurance (21.3) (21.7) (23.0) Other (2.5) (2.2) (11.4) Other expense $ (40.4) $ (75.1) $ (97.3) Evergy Kansas Central Non-service cost component of net benefit cost $ 2.1 $ (17.6) $ (17.1) Corporate-owned life insurance (20.2) (20.6) (21.9) Other (0.6) (0.5) (0.6) Other expense $ (18.7) $ (38.7) $ (39.6) Evergy Metro Non-service cost component of net benefit cost $ (10.1) $ (24.8) $ (31.0) Corporate-owned life insurance (1.0) (1.1) (1.0) Other (1.4) (1.1) (1.9) Other expense $ (12.5) $ (27.0) $ (33.9) 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 or the contingently issuable share method, as applicable. The following table reconciles Evergy's basic and diluted EPS. 2024 2023 2022 Income (millions, except per share amounts) Net income $ 885.8 $ 743.6 $ 765.0 Less: Net income attributable to noncontrolling interests 12.3 12.3 12.3 Net income attributable to Evergy, Inc. $ 873.5 $ 731.3 $ 752.7 Common Shares Outstanding Weighted average number of common shares outstanding - basic 230.3 230.0 229.9 Add: effect of dilutive securities 0.3 0.5 0.4 Diluted average number of common shares outstanding 230.6 230.5 230.3 Basic EPS $ 3.79 $ 3.18 $ 3.27 Diluted EPS $ 3.79 $ 3.17 $ 3.27 There were no anti-dilutive securities excluded from the computation of diluted EPS for 2024. Anti-dilutive securities excluded from the computation of diluted EPS for 2023 and 2022 were 3,950,000 common shares issuable pursuant to a warrant. Also, there was no dilution resulting from Evergy's convertible notes in 2024 or 2023. Supplemental Cash Flow Information Year Ended December 31 2024 2023 2022 Evergy (millions) Cash paid for (received from): Interest, net of amount capitalized $ 538.5 $ 500.9 $ 393.7 Interest of VIEs 13.1 — — Income taxes, net of refunds 38.0 34.4 21.6 Non-cash investing transactions: Property, plant and equipment additions 277.5 251.3 354.7 Year Ended December 31 2024 2023 2022 Evergy Kansas Central (millions) Cash paid for (received from): Interest, net of amount capitalized $ 220.6 $ 195.3 $ 170.2 Income taxes, net of refunds 10.7 54.4 79.8 Non-cash investing transactions: Property, plant and equipment additions 158.0 134.1 203.9 Year Ended December 31 2024 2023 2022 Evergy Metro (millions) Cash paid for (received from): Interest, net of amount capitalized $ 145.9 $ 134.3 $ 114.6 Income taxes, net of refunds 38.5 9.8 (15.2) Non-cash investing transactions: Property, plant and equipment additions 86.3 83.2 125.8 Non-cash property, plant and equipment additions in 2022 for Evergy, Evergy Kansas Central and Evergy Metro include a non-cash addition related to the revision in estimate of various ARO liabilities in 2022. Dividends Declared In February 2025, Evergy's Board of Directors (Evergy Board) declared a quarterly dividend of $0.6675 per share on Evergy's common stock. The common stock dividend is payable March 21, 2025, to shareholders of record as of March 10, 2025. In February 2025, Evergy Kansas Central's Board of Directors and Evergy Metro's Board of Directors each declared a cash dividend to Evergy of up to $50.0 million payable on or before March 20, 2025. Kansas Legislation In April 2024, Kansas H.B. 2527 was signed into law by the Governor of Kansas. Most notably, H.B. 2527 includes a plant-in service accounting (PISA) provision that can be elected by Kansas electric public utilities to defer and recover as regulatory assets 90% of depreciation expense and associated return on investment linked to qualifying electric plants in service. Qualifying electric plant includes all rate base additions by an electric public utility, but does not include transmission facilities or new electric generating units. The deferred depreciation and return on the associated regulatory asset are required to be included in determining the utility's rate base during subsequent general rate proceedings. The return on the deferred regulatory asset balances will be calculated using the weighted average cost of capital. Utilities that elect the PISA provision can make qualifying deferrals of depreciation and return from July 2024 through December 2030. Evergy Kansas Central and Evergy Metro elected the PISA provision in their Kansas jurisdictions effective in July 2024. Additionally, the law establishes new mechanisms for the recovery of costs associated with new gas-fired generating units. If the KCC decides investment in a new gas-fired generating unit is reasonable, the utility would be able to recover the return on 100% of the associated construction costs at its weighted average cost of capital. The cost recovery from customers could begin a year after construction begins. Rates could be adjusted every six months until new base rates reflecting the plant's costs are established. In April 2024, Kansas S.B. 410 was signed into law by the Governor of Kansas. Most notably, S.B. 410 includes an exemption from all property and ad valorem taxes on certain electric generation facilities for which construction or installation begins on or after January 1, 2025. Natural Gas Plant Investments In April 2024, Evergy Missouri West purchased a 22% ownership interest representing approximately 145 MW in Dogwood Energy Center (Dogwood), an operational combined-cycle natural gas facility located in Missouri, for approximately $60 million. The purchase was recorded as an asset acquisition to property, plant and equipment, net, on Evergy's consolidated balance sheet. The purchase was subject to terms and conditions listed in a stipulation and agreement approved by the MPSC allowing Evergy Missouri West to recover in rates a return of and return on the original cost, net of accumulated depreciation, of Dogwood. Evergy Missouri West shall also be allowed to recover in rates over two years a return of, but not a return on, the amount of the purchase price paid in excess of the original cost, net of accumulated depreciation, of Dogwood. In addition, net revenues generated from Evergy Missouri West's ownership of Dogwood from the date of closing to the date new rates become effective in Evergy Missouri West's current rate case shall not impact rates and shall be retained by Evergy Missouri West and reduce the amount of the purchase price paid in excess of the original cost, net of accumulated depreciation, of Dogwood to be recovered from customers. 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 each plant and expect each plant to have an initial generating capacity of approximately 705 MW. The first plant is expected to begin operations by summer of 2029 and the second plant is expected to begin operations by summer of 2030. Additionally, Evergy Missouri West plans to construct a 440 MW simple-cycle natural gas plant located in Missouri. The plant is expected to begin operations in 2030. See Note 4 for information regarding Evergy Kansas Central's and Evergy Missouri West's applications for predetermination and the Certificate of Convenience and Necessity (CCN) for their investments in these natural gas plants. 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 KCC of predetermination with reasonably acceptable terms and other closing conditions. 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 MPSC of a CCN with reasonably acceptable terms. See Note 4 for information regarding Evergy Kansas Central's and Evergy Missouri West's applications for predetermination and CCN, respectively, for their investments in these renewable generating plants.

REVENUE

REVENUE	12 Months Ended
	Dec. 31, 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 2024 2023 2022 Revenues (millions) Residential $ 2,186.6 $ 2,036.7 $ 2,168.2 Commercial 1,963.7 1,832.4 1,888.5 Industrial 682.0 625.9 686.2 Other retail 43.3 43.2 (32.1) Total electric retail $ 4,875.6 $ 4,538.2 $ 4,710.8 Wholesale 320.5 373.5 509.9 Transmission 482.6 403.2 343.7 Industrial steam and other 25.7 30.2 24.8 Total revenue from contracts with customers $ 5,704.4 $ 5,345.1 $ 5,589.2 Other 142.9 163.1 269.9 Operating revenues $ 5,847.3 $ 5,508.2 $ 5,859.1 Evergy's other retail electric revenues in 2022 include a $68.0 million recognition of a regulatory liability for the refund of revenues previously collected from customers since December 2018 for the return on investment of the retired Sibley Station. Evergy Kansas Central 2024 2023 2022 Revenues (millions) Residential $ 983.5 $ 821.0 $ 980.1 Commercial 842.7 722.9 822.9 Industrial 448.9 398.5 465.7 Other retail 25.2 18.1 17.9 Total electric retail $ 2,300.3 $ 1,960.5 $ 2,286.6 Wholesale 237.2 296.8 389.9 Transmission 455.0 385.8 305.0 Other 2.7 2.1 2.2 Total revenue from contracts with customers $ 2,995.2 $ 2,645.2 $ 2,983.7 Other 11.9 53.2 72.2 Operating revenues $ 3,007.1 $ 2,698.4 $ 3,055.9 Evergy Metro 2024 2023 2022 Revenues (millions) Residential $ 738.8 $ 748.4 $ 746.4 Commercial 776.7 778.9 758.6 Industrial 132.7 130.9 127.0 Other retail 10.3 12.7 11.5 Total electric retail $ 1,658.5 $ 1,670.9 $ 1,643.5 Wholesale 82.6 91.9 111.9 Transmission 19.9 14.3 18.2 Other 3.7 3.3 0.9 Total revenue from contracts with customers $ 1,764.7 $ 1,780.4 $ 1,774.5 Other 129.0 108.6 196.1 Operating revenues $ 1,893.7 $ 1,889.0 $ 1,970.6 Retail Revenues The Evergy Companies' retail revenues are generated by the regulated sale of electricity to their residential, commercial and industrial customers within their franchised service territories. The Evergy Companies recognize revenue on the sale of electricity to their customers over time as the service is provided in the amount they have a right to invoice. Retail customers are billed monthly at the tariff rates approved by the KCC and MPSC based on customer kWh usage. Revenues recorded include electric services provided but not yet billed by the Evergy Companies. Unbilled revenues are recorded for kWh usage in the period following the customers' billing cycle to the end of the month. This estimate is based on net system kWh usage less actual billed kWhs. The Evergy Companies' estimated unbilled kWhs are allocated and priced by regulatory jurisdiction across the rate classes based on actual billing rates. The Evergy Companies also collect sales taxes and franchise fees from customers concurrent with revenue-producing activities that are levied by state and local governments. These items are excluded from revenue, and thus not reflected on the statements of income and comprehensive income, for Evergy, Evergy Kansas Central and Evergy Metro. Wholesale Revenues The Evergy Companies' wholesale revenues are generated by the sale of wholesale power and capacity in circumstances when the power that the Evergy Companies generate is not required for customers in their service territory. These sales primarily occur within the SPP Integrated Marketplace. The Evergy Companies also purchase power from the SPP Integrated Marketplace and record sale and purchase activity on a net basis in wholesale revenue or fuel and purchased power expense. In addition, the Evergy Companies sell wholesale power and capacity through bilateral contracts to other counterparties, such as electric cooperatives, municipalities and other electric utilities. For both wholesale sales to the SPP Integrated Marketplace and through bilateral contracts, the Evergy Companies recognize revenue on the sale of wholesale electricity to their customers over time as the service is provided in the amount they have a right to invoice. Wholesale sales within the SPP Integrated Marketplace are billed weekly based on the fixed transaction price determined by the market at the time of the sale and the megawatt hour (MWh) quantity sold. Wholesale sales from bilateral contracts are billed monthly based on the contractually determined transaction price and the kWh quantity sold. Transmission Revenues The Evergy Companies' transmission revenues are generated by the use of their transmission networks by the SPP. To enable optimal use of the diverse generating resources in the SPP region, the Evergy Companies, as well as other transmission owners, allow the SPP to access and operate their transmission networks. As new transmission lines are constructed, they are included in the transmission network available to the SPP. In exchange for providing access, the SPP pays the Evergy Companies consideration determined by formula rates approved by the Federal Energy Regulatory Commission (FERC), which include the cost to construct and maintain the transmission lines and a return on investment. The price for access to the Evergy Companies' transmission networks are updated annually based on projected costs. Projections are updated to actual costs and the difference is included in subsequent year's prices. The Evergy Companies have different treatment for their legacy transmission facilities within the SPP, which results in different levels of transmission revenue being received from the SPP. Evergy Kansas Central's transmission revenues from SPP include amounts that Evergy Kansas Central pays to the SPP on behalf of its retail electric customers for the use of Evergy Kansas Central's legacy transmission facilities. These transmission revenues are mostly offset by SPP network transmission cost expense that Evergy Kansas Central pays on behalf of its retail customers. Evergy Metro and Evergy Missouri West do not pay the SPP for their retail customers’ use of the Evergy Metro and Evergy Missouri West legacy transmission facilities and correspondingly, their transmission revenues also do not reflect the associated transmission revenue from the SPP. The Evergy Companies recognize revenue on the sale of transmission service to their customers over time as the service is provided in the amount they have a right to invoice. Transmission service to the SPP is billed monthly based on a fixed transaction price determined by FERC formula transmission rates along with other SPP-specific charges and the MW quantity sold. Industrial Steam and Other Revenues Evergy's industrial steam and other revenues are primarily generated by the regulated sale of industrial steam to Evergy Missouri West's steam customers. Evergy recognizes revenue on the sale of industrial steam to its customers over time as the service is provided in the amount that it has the right to invoice. Steam customers are billed on a monthly basis at the tariff rate approved by the MPSC based on customer MMBtu usage.

RECEIVABLES

RECEIVABLES	12 Months Ended
	Dec. 31, 2024
Receivables [Abstract]
RECEIVABLES	RECEIVABLES The Evergy Companies' receivables are detailed in the following table. December 31 2024 2023 Evergy (millions) Customer accounts receivable - billed $ 2.7 $ 2.6 Customer accounts receivable - unbilled 108.4 109.1 Other receivables 150.0 169.4 Allowance for credit losses (15.7) (24.2) Total $ 245.4 $ 256.9 Evergy Kansas Central Customer accounts receivable - unbilled $ 36.0 $ 39.9 Other receivables 104.9 143.5 Allowance for credit losses (7.8) (11.6) Total $ 133.1 $ 171.8 Evergy Metro Customer accounts receivable - unbilled $ 28.5 $ 27.2 Other receivables 35.4 35.7 Allowance for credit losses (5.8) (7.9) Total $ 58.1 $ 55.0 The Evergy Companies' other receivables as of December 31, 2024 and 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. December 31 2024 2023 (millions) Evergy $ 68.9 $ 61.5 Evergy Kansas Central 65.3 59.9 Evergy Metro 2.6 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 11.7 15.4 Write-offs (32.5) (33.3) Recoveries of prior write-offs 12.3 10.7 Ending balance December 31 $ 15.7 $ 24.2 Evergy Kansas Central Beginning balance January 1 $ 11.6 $ 16.9 Credit loss expense 6.6 7.7 Write-offs (15.6) (17.7) Recoveries of prior write-offs 5.2 4.7 Ending balance December 31 $ 7.8 $ 11.6 Evergy Metro Beginning balance January 1 $ 7.9 $ 9.3 Credit loss expense 4.5 5.0 Write-offs (11.6) (10.5) Recoveries of prior write-offs 5.0 4.1 Ending balance December 31 $ 5.8 $ 7.9 Sale of Accounts Receivable Evergy Kansas Central, Evergy Metro and Evergy Missouri West sell an undivided percentage ownership interest in their retail electric accounts receivable to independent outside investors. These sales are accounted for as secured borrowings with accounts receivable pledged as collateral and a corresponding short-term collateralized note payable recognized on the balance sheets. The Evergy Companies' accounts receivable pledged as collateral and the corresponding short-term collateralized note payable are summarized in the following table. December 31 2024 2023 (millions) Evergy $ 401.0 $ 342.0 Evergy Kansas Central 215.0 166.0 Evergy Metro 136.0 126.0

RATE MATTERS AND REGULATION

RATE MATTERS AND REGULATION	12 Months Ended
	Dec. 31, 2024
Regulated Operations [Abstract]
RATE MATTERS AND REGULATION	RATE MATTERS AND REGULATION KCC Proceedings Evergy Kansas Central's 2025 Rate Case Proceeding In January 2025, Evergy Kansas Central filed an application with the KCC to request an increase to its retail revenues of approximately $196 million. Evergy Kansas Central'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 update of expenses to current levels of spend. New rates are expected to be effective in September 2025. Applications for Predetermination The KCC uses a process referred to as ‘predetermination’ to establish ratemaking principles and treatments for certain utility investments before they are included in a utility’s rate base. The process helps balance the interest of utilities and customers by ensuring broad agreement to the reasonableness of the investment and regulatory certainty regarding the recovery of costs associated with the investment. Investment in utility projects may be dependent on acceptable regulatory treatment determined in the predetermination process. In November 2024, Evergy Kansas Central requested predetermination from the KCC for its planned natural gas plant investments and Kansas Sky solar investment. Evergy Kansas Central is expecting an order from the KCC in July 2025. 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 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. In December 2024, the MPSC issued a final rate order approving the unanimous partial stipulation and agreement. The new rates established by this order took effect in January 2025. Requests for Certificate of Convenience and Necessity Missouri utilities must request a CCN from the MPSC to authorize them to build certain utility projects. The CCN process authorizes utilities to build projects and can provide assurance that the project is prudent and necessary. Investment in projects is dependent upon the granting by the MPSC of a CCN with reasonably acceptable terms. In October 2024, Evergy Missouri West filed an application for a CCN for its planned renewable plant investments. In its application, Evergy Missouri West requested an order from the MPSC by May 2025. In November 2024, Evergy Missouri West filed an application for a CCN for its planned natural gas plant investments. Evergy Missouri West is expecting an order from the MPSC by August 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 12 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 December 31, 2024 and 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 and Evergy Kansas Central are 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. Regulatory Assets and Liabilities The Evergy Companies have recorded assets and liabilities on their consolidated balance sheets resulting from the effects of the ratemaking process, which would not otherwise be recorded if they were not regulated. Regulatory assets represent incurred costs that are probable of recovery from future revenues. Regulatory liabilities represent future reductions in revenues or refunds to customers. Management regularly assesses whether regulatory assets and liabilities are probable of future recovery or refund by considering factors such as decisions by the MPSC, KCC or FERC in Evergy Kansas Central's, Evergy Metro's and Evergy Missouri West's rate case filings; decisions in other regulatory proceedings, including decisions related to other companies that establish precedent on matters applicable to the Evergy Companies; and changes in laws and regulations. If recovery or refund of regulatory assets or liabilities is not approved by regulators or is no longer deemed probable, these regulatory assets or liabilities are recognized in the current period results of operations. The Evergy Companies continued ability to meet the criteria for recording regulatory assets and liabilities may be affected in the future by restructuring and deregulation in the electric industry or changes in accounting rules. In the event that the criteria no longer applied to any or all of the Evergy Companies' operations, the related regulatory assets and liabilities would be written off unless an appropriate regulatory recovery mechanism were provided. Additionally, these factors could result in an impairment on utility plant assets. The Evergy Companies' regulatory assets and liabilities are detailed in the following tables. December 31 2024 2023 Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Regulatory Assets (millions) Pension and post-retirement costs $ 47.3 $ — $ — $ 91.6 $ 29.7 $ — Debt reacquisition costs 74.8 69.8 4.7 81.2 75.3 5.3 Debt fair value adjustment 81.6 — — 87.0 — — Asset retirement obligations fair value 121.9 — — 120.7 — — Depreciation 238.3 55.6 94.7 168.7 44.6 66.0 Cost of removal 332.1 133.5 167.8 372.3 165.6 168.2 Asset retirement obligations 189.0 81.5 82.2 152.9 65.9 64.0 Analog meter unrecovered investment 6.2 6.2 — 8.3 8.3 — Treasury yield hedges 17.0 17.0 — 18.1 18.1 — Iatan No. 1 and common facilities 5.6 — 2.5 5.9 — 2.5 Iatan No. 2 construction accounting costs 22.7 — 11.4 23.4 — 11.7 Property taxes 26.6 — 23.7 56.0 28.3 25.3 Disallowed plant costs 13.2 13.2 — 13.5 13.5 — La Cygne environmental costs 7.7 5.8 1.9 8.8 6.8 2.0 Deferred customer programs 38.5 15.9 17.2 20.3 6.7 11.2 Fuel recovery mechanisms 25.7 16.3 9.4 101.3 — 14.1 February 2021 winter weather event 8.3 8.3 — 403.5 79.7 — February 2021 winter weather event securitized costs 310.4 — — — — — Solar rebates 3.4 — — 9.9 — — Transmission delivery charge 22.0 20.0 2.0 2.0 0.9 1.1 Wolf Creek outage 14.6 7.3 7.3 8.4 4.2 4.2 Pension and other post-retirement benefit 82.4 31.0 31.9 85.8 32.0 34.2 Retired generation facilities 120.8 — — 138.2 — — Merger transition costs 18.4 8.7 6.9 23.1 11.0 8.6 Other regulatory assets 71.7 36.2 8.5 86.5 42.3 15.6 Total 1,900.2 526.3 472.1 2,087.4 632.9 434.0 Less: current portion (180.9) (79.7) (42.7) (292.1) (127.7) (53.2) Total noncurrent regulatory assets $ 1,719.3 $ 446.6 $ 429.4 $ 1,795.3 $ 505.2 $ 380.8 December 31 2024 2023 Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Regulatory Liabilities (millions) Taxes refundable through future rates $ 1,631.4 $ 1,008.5 $ 477.7 $ 1,737.8 $ 1,047.2 $ 519.2 Nuclear production tax credits 168.6 82.4 86.2 — — — Deferred regulatory gain from sale 26.1 26.1 — 31.6 31.6 — Emission allowances 30.2 — 30.2 34.2 — 34.2 Nuclear decommissioning 387.2 142.1 245.1 318.7 125.5 193.2 Pension and post-retirement costs 206.6 39.0 165.4 124.8 21.9 100.5 Jurisdictional allowance for funds used 23.8 22.1 1.7 24.4 22.7 1.7 La Cygne leasehold dismantling costs 29.6 29.6 — 29.6 29.6 — Kansas tax credits 8.4 8.4 — 16.8 16.8 — Purchase power agreement 3.0 3.0 — 3.7 3.7 — Fuel recovery mechanisms 21.5 — 0.2 34.7 34.7 — February 2021 winter weather event 3.0 — 3.0 13.0 — 13.0 Sibley AAO 52.8 — — 79.2 — — TFR refunds 7.1 7.1 — 11.2 11.2 — COLI rate credits refund 64.4 64.4 — 96.5 96.5 — Levelized rate recovery 65.0 65.0 — 38.1 38.1 — Other regulatory liabilities 117.1 54.7 37.4 131.2 57.0 41.4 Total 2,845.8 1,552.4 1,046.9 2,725.5 1,536.5 903.2 Less: current portion (173.8) (76.6) (38.5) (183.0) (104.1) (43.0) Total noncurrent regulatory liabilities $ 2,672.0 $ 1,475.8 $ 1,008.4 $ 2,542.5 $ 1,432.4 $ 860.2 The following summarizes the nature and period of recovery for each of the regulatory assets listed in the table above. Pension and post-retirement costs: Represents unrecognized gains and losses and prior service costs that will be recognized in future net periodic pension and post-retirement costs, pension settlements amortized over various periods and financial and regulatory accounting method differences that will be eliminated over the life of the pension plans. Of these amounts, as of December 31, 2024, $73.1 million and $33.1 million for Evergy and Evergy Kansas Central, respectively, are not included in rate base and are amortized over various periods. Additionally, $53.2 million, ($28.9) million and $36.6 million for Evergy, Evergy Kansas Central and Evergy Metro, respectively, represent differences between pension and post-retirement costs under GAAP and pension and post-retirement costs for ratemaking that will be recovered or refunded in future rates and differences in accumulated unrecognized gains and losses and prior service costs between Evergy and Evergy Metro due to Evergy Metro electing not to apply "push-down accounting" related to the merger that created Evergy. Debt reacquisition costs: Includes costs incurred to reacquire and refinance debt. These costs are amortized over the term of the new debt or the remaining lives of the old debt issuances if no new debt was issued and are not included in rate base. Debt fair value adjustment: Represents purchase accounting adjustments recorded to state the carrying value of Evergy Metro and Evergy Missouri West long-term debt at fair value in connection with the merger that created Evergy. Amount is amortized over the life of the related debt and is not included in rate base. Asset retirement obligations fair value adjustment: Represents purchase accounting adjustments recorded to state the carrying value of Evergy Metro and Evergy Missouri West AROs at fair value in connection with the merger that created Evergy. Amount is amortized over the life of the related plant and is not included in rate base. Depreciation: Represents the difference between regulatory depreciation expense and depreciation expense recorded for financial reporting purposes and includes balances related to PISA. These assets are included in rate base and the difference is amortized over the life of the related plant. Cost of removal: Represents amounts spent, but not yet collected, to dispose of plant assets. This asset will decrease as removal costs are collected in rates and is included in rate base. Asset retirement obligations: Represents amounts associated with AROs as discussed further in Note 6. These amounts are recovered over the life of the related plant and are not included in rate base. Analog meter unrecovered investment: Represents the deferral of unrecovered investment of retired analog meters. These costs are not included in rate base and are amortized through 2026. Treasury yield hedges: Represents the effective portion of treasury yield hedge transactions. Amortization of this amount will be included in interest expense over the term of the related debt and is not included in rate base. Iatan No. 1 and common facilities: Represents depreciation and carrying costs related to Iatan No. 1 and common facilities. These costs are included in rate base and amortized through 2057. Iatan No. 2 construction accounting costs: Represents the construction accounting costs related to Iatan No. 2. These costs are included in rate base and amortized through 2059. Property taxes: Represents actual costs incurred for property taxes in excess of amounts collected in revenues. These costs are expected to be recovered over various periods and are not included in rate base. Disallowed plant costs: The KCC originally disallowed certain costs related to the Wolf Creek plant. In 1987, the KCC revised its original conclusion and provided for recovery of an indirect disallowance with no return on investment. This regulatory asset represents the present value of the future expected revenues to be provided to recover these costs, net of the amounts amortized. La Cygne environmental costs: Represents the deferral of depreciation and amortization expense and associated carrying charges related to the La Cygne Station environmental project. This amount will be amortized over the life of the related asset and is included in rate base. Deferred customer programs: Represents costs related to various energy efficiency programs that have been accumulated and deferred for future recovery. These amounts are not included in rate base and are amortized over various periods. Fuel recovery mechanisms: Represents the actual cost of fuel consumed in producing electricity and the cost of purchased power in excess of the amounts collected from customers. This difference is expected to be recovered over a one February 2021 winter weather event: Represents deferred extraordinary fuel and purchased power costs incurred to provide electric service as a result of the February 2021 winter weather event. These amounts are not included in rate base and will be fully amortized in 2025. February 2021 winter weather event securitized costs: Represents deferred extraordinary fuel and purchased power costs incurred to provide electric service as a result of the February 2021 winter weather event. In February 2024, Evergy Missouri West securitized this asset. Evergy Missouri West expects to recover the amounts through 2038. Solar rebates: Represents costs associated with solar rebates provided to retail electric customers. These amounts are not included in rate base and are amortized over various periods. Transmission delivery charge: Represents costs associated with the transmission delivery charge. The amounts are not included in rate base and are amortized over a one Wolf Creek outage: Represents deferred expenses associated with Wolf Creek's scheduled refueling and maintenance outages. These expenses are amortized during the period between planned outages and are not included in rate base. Pension and other post-retirement benefit non-service costs: Represents the non-service component of pension and post-retirement net benefit costs that are capitalized as authorized by regulators. The amounts are included in rate base and are recovered over the life of the related asset. Retired generation facilities: Represents amounts to be recovered for facilities that have been retired, are not included in rate base and recovered through 2030. Merger transition costs: Represents recoverable transition costs related to the merger. The amounts are not included in rate base and are recovered through 2028. Other regulatory assets: Includes various regulatory assets that individually are small in relation to the total regulatory asset balance. Of these amounts, $2.6 million, $2.0 million and $0.3 million for Evergy, Evergy Kansas Central and Evergy Metro, respectively, are included in rate base and are amortized over various periods. The following summarizes the nature and period of amortization for each of the regulatory liabilities listed in the table above. Taxes refundable through future rates: Represents the obligation to return to customers income taxes recovered in earlier periods when corporate income tax rates were higher than current income tax rates. A large portion of this amount is related to depreciation and will be returned to customers over the life of the applicable property. Nuclear production tax credits: Represents nuclear production tax credits (PTCs) generated by Wolf Creek. The benefits from these credits are expected to be refunded to customers in future rates following the realization of the credits. Deferred regulatory gain from sale leaseback: Represents the gain Evergy Kansas South recorded on the 1987 sale and leaseback of its 50% interest in La Cygne Unit 2. The gain is amortized over the term of the lease. Emission allowances: Represents deferred gains related to the sale of emission allowances to be returned to customers. Nuclear decommissioning: Represents the difference between the fair value of the assets held in the nuclear decommissioning trust and the amount recorded for the accumulated accretion and depreciation expense associated with the asset retirement obligation related to Wolf Creek. Pension and post-retirement costs: Includes pension and post-retirement benefit obligations and expense recognized in setting prices in excess of actual pension and post-retirement expense. Jurisdictional allowance for funds used during construction: Represents AFUDC that is accrued subsequent to the time the associated construction charges are included in prices and prior to the time the related assets are placed in service. The AFUDC is amortized to depreciation expense over the useful life of the asset that is placed in service. La Cygne leasehold dismantling costs: Represents amounts collected but not yet spent on the contractual obligation to dismantle a portion of La Cygne Unit 2. The obligation will be discharged as the unit is dismantled. Kansas tax credits: Represents Kansas tax credits on investment in utility plant. Amounts will be credited to customers subsequent to the realization of the credits over the remaining lives of the utility plant giving rise to the tax credits. Purchase power agreement: Represents the amount included in retail electric rates from customers in excess of costs incurred under purchase power agreements. Amounts are amortized over a five Fuel recovery mechanisms: Represents the amount collected from customers in excess of the actual cost of fuel consumed in producing electricity and the cost of purchased power. This difference is expected to be refunded over a one February 2021 winter weather event: Represents the deferral of increased wholesale revenues earned during the February 2021 winter weather event. Sibley accounting authority order: These amounts were collected in connection with an accounting authority order (AAO) granted by the MPSC in October 2019 and represent revenues that Evergy Missouri West collected from customers for the return on its unrecovered investment in Sibley Station, non-fuel operations and maintenance costs and other costs associated with Sibley Station following its retirement in November 2018. The amended final order in Evergy Missouri West's 2022 rate case required Evergy Missouri West to refund these revenues to customers over a four TFR refunds: Represents the amount ordered to be refunded to TFR customers for over-collections related to the calculation of Evergy Kansas Central's capital structure for the rate years 2020 through 2022. This difference was refunded as a part of its 2023 TFR. In addition, this includes amounts probable of refund for similar issues for years 2018 through 2019 and amounts related to the amortization of excess deferred income taxes authorized by FERC in December 2022. See "Evergy Kansas Central TFR Formal Challenge" within this Note 4 for additional information. COLI rate credits refund: Represents the amount ordered to be refunded by Evergy Kansas Central to customers amortized over a three Levelized rate recovery: Instead of traditional ratemaking, the KCC ordered that Evergy Kansas Central recover the costs of several owned wind farms through a levelized revenue requirement. The levelized recovery of costs defers the rates intended to recover allowable costs for each wind farm beyond the period in which those costs would be charged to expense under traditional ratemaking. The regulatory liability represents the cumulative amount collected in accordance with the ordered ratemaking treatment in excess of the amount that would have been collected under traditional ratemaking. Other regulatory liabilities: Includes various regulatory liabilities that individually are relatively small in relation to the total regulatory liability balance. These amounts will be credited over various periods.

GOODWILL

GOODWILL	12 Months Ended
	Dec. 31, 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 merger that created Evergy 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	12 Months Ended
	Dec. 31, 2024
Asset Retirement Obligation Disclosure [Abstract]
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 and the retirement of wind generation facilities. The following table summarizes the change in the Evergy Companies' AROs for the periods ending December 31, 2024 and 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 (28.0) 3.2 (24.3) 1.6 (0.5) 1.6 Settlements (12.1) (21.8) (7.4) (9.8) (4.3) (8.6) Accretion 61.2 58.8 35.4 32.7 23.0 23.2 Ending balance $ 1,297.0 $ 1,203.1 $ 647.8 $ 599.3 $ 502.7 $ 460.4 Less: current portion (28.7) (40.3) (16.5) (22.2) (11.8) (16.0) Total noncurrent asset $ 1,268.3 $ 1,162.8 $ 631.3 $ 577.1 $ 490.9 $ 444.4 In 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. The Evergy Companies recorded an offsetting balance to property, plant and equipment, net, or a regulatory asset for each ARO liability. See Note 15 for additional information regarding the regulation of CCRs.

PROPERTY, PLANT AND EQUIPMENT

PROPERTY, PLANT AND EQUIPMENT	12 Months Ended
	Dec. 31, 2024
Property, Plant and Equipment [Abstract]
PROPERTY, PLANT AND EQUIPMENT	PROPERTY, PLANT AND EQUIPMENT The following tables summarize the property, plant and equipment of Evergy, Evergy Kansas Central and Evergy Metro. December 31, 2024 Evergy Evergy Kansas Central Evergy Metro (millions) Electric plant in service $ 36,444.9 $ 17,914.9 $ 13,468.3 Electric plant acquisition adjustment 742.9 724.9 — Accumulated depreciation (14,165.5) (6,914.4) (5,752.6) Plant in service 23,022.3 11,725.4 7,715.7 Construction work in progress 1,707.0 1,053.7 476.1 Nuclear fuel, net 200.9 100.3 100.6 Plant to be retired, net (b) 0.7 0.7 — Net property, plant and equipment $ 24,930.9 $ 12,880.1 $ 8,292.4 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 (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 — Net property, plant and equipment (a) $ 23,728.7 $ 12,121.9 $ 8,131.2 (a) As of December 31, 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 December 31, 2024 and 2023, represents the planned retirement of Evergy Kansas Central analog meters prior to the end of their remaining useful lives. The following table summarizes the property, plant and equipment of the VIE for Evergy and Evergy Kansas Central. December 31 2024 2023 (millions) Electric plant of VIEs $ 392.1 $ 392.1 Accumulated depreciation of VIEs (265.6) (258.5) Net property, plant and equipment of VIEs $ 126.5 $ 133.6 Depreciation Expense The Evergy Companies' depreciation expense is detailed in the following table. 2024 2023 2022 (millions) Evergy (a) $ 965.9 $ 943.3 $ 836.1 Evergy Kansas Central (a) 542.3 497.7 468.2 Evergy Metro 294.6 319.7 261.7 (a) Approximately $7.1 million of depreciation expense in each of 2024, 2023 and 2022 was attributable to property, plant and equipment of VIEs.

JOINTLY-OWNED ELECTRIC UTILITY

JOINTLY-OWNED ELECTRIC UTILITY PLANTS	12 Months Ended
	Dec. 31, 2024
Jointly Owned Electric Utility Plants [Abstract]
JOINTLY-OWNED ELECTRIC UTILITY PLANTS	JOINTLY-OWNED ELECTRIC UTILITY PLANTS Evergy's, Evergy Kansas Central's and Evergy Metro's share of jointly-owned electric utility plants at December 31, 2024, are detailed in the following tables. Evergy Evergy's share Electric plant in service Accumulated depreciation Nuclear fuel, net Construction work in progress 2025 accredited capacity-MWs (millions, except MW amounts) Wolf Creek Unit 94 % $ 4,335.4 $ 2,323.8 $ 200.9 $ 310.5 1,106 La Cygne Units (a) 100 % 2,379.9 1,077.4 — 48.3 1,426 Iatan No. 1 Unit 88 % 795.1 307.5 — 21.1 618 Iatan No. 2 Unit 73 % 1,429.5 488.1 — 3.2 653 Iatan Common 79 % 520.6 145.6 — 2.0 n/a Jeffrey Energy Center 100 % 2,640.1 1,112.6 — 105.3 2,183 State Line 40 % 136.0 102.0 — 7.8 209 Dogwood Energy Center 22 % 93.7 41.4 — 1.2 145 (a) The VIE consolidated by Evergy and Evergy Kansas Central holds its 50% leasehold interest in La Cygne Unit 2. This 50% leasehold interest in La Cygne Unit 2 is reflected in the information provided above. See Note 19 for additional information. Evergy Kansas Central Evergy Kansas Central's share Electric plant in service Accumulated depreciation Nuclear fuel, net Construction work in progress 2025 accredited capacity-MWs (millions, except MW amounts) Wolf Creek Unit 47 % $ 2,128.6 $ 1,137.2 $ 100.3 $ 141.6 553 La Cygne Units (a) 50 % 1,121.7 578.3 — 31.7 713 Jeffrey Energy Center 92 % 2,416.7 1,019.2 — 96.8 2,008 State Line 40 % 136.0 102.0 — 7.8 209 (a) The VIE consolidated by Evergy and Evergy Kansas Central holds its 50% leasehold interest in La Cygne Unit 2. This 50% leasehold interest in La Cygne Unit 2 is reflected in the information provided above. See Note 19 for additional information. Evergy Metro Evergy Metro's share Electric plant in service Accumulated depreciation Nuclear fuel, net Construction work in progress 2025 accredited capacity-MWs (millions, except MW amounts) Wolf Creek Unit 47 % $ 2,206.8 $ 1,186.6 $ 100.6 $ 168.9 553 La Cygne Units 50 % 1,258.2 499.1 — 16.6 713 Iatan No. 1 Unit 70 % 618.2 258.1 — 16.9 492 Iatan No. 2 Unit 55 % 1,078.6 450.7 — 2.4 491 Iatan Common 61 % 412.8 131.4 — 1.3 n/a Each owner must fund its own portion of the plant's operating expenses and capital expenditures. The Evergy Companies' share of direct expenses are included in the appropriate operating expense classifications in Evergy's, Evergy Kansas Central's and Evergy Metro's consolidated financial statements.

PENSION PLANS AND POST-RETIREME

PENSION PLANS AND POST-RETIREMENT BENEFITS	12 Months Ended
	Dec. 31, 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's defined benefit plans, consisting of Evergy Kansas South's and Evergy Metro's respective 47% ownership shares. For the majority of employees, pension benefits under these plans reflect the employees' compensation, years of service and age at retirement. However, for the plan covering Evergy Kansas Central's employees, the benefits for non-union employees hired between 2002 and the second quarter of 2018 and union employees hired beginning in 2012 are derived from a cash balance account formula. The plan was closed to future non-union employees in 2018. For the plans covering Evergy Metro's employees, the benefits for union employees hired beginning in 2014 are derived from a cash balance account formula and the plans were closed to future non-union employees in 2014. Evergy and its subsidiaries also provide certain post-retirement health care and life insurance benefits for substantially all retired employees of Evergy Kansas Central and Evergy Metro and their respective shares of Wolf Creek's post-retirement benefit plans. The Evergy Companies record pension and post-retirement expense in accordance with rate orders from the KCC and MPSC that allow the difference between pension and post-retirement costs under GAAP and costs for ratemaking to be recognized as a regulatory asset or liability. This difference between financial and regulatory accounting methods is due to timing and will be eliminated over the life of the plans. For 2024, Evergy and Evergy Kansas Central recorded pension special termination benefit expense of $0.2 million. For 2023, Evergy, Evergy Kansas Central and Evergy Metro recorded pension settlement (gains) losses of ($21.1) million, $1.1 million and ($22.2) million, respectively. For 2022, Evergy, Evergy Kansas Central and Evergy Metro recorded pension and post-retirement special termination benefit expense of $59.5 million, $17.0 million and $42.5 million, respectively. These settlement (gains) losses and special termination benefits were the result of accelerated distributions and enhanced pension distributions as a result of employee retirements for certain plan participants. Evergy, Evergy Kansas Central and Evergy Metro deferred substantially all of the (gains), losses and expense to regulatory assets or regulatory liabilities and expect to recover these amounts over future periods pursuant to regulatory agreements. The following pension benefits tables provide information relating to the funded status of all defined benefit pension plans on an aggregate basis as well as the components of net periodic benefit costs. For financial reporting purposes, the market value of plan assets is the fair value. Net periodic benefit costs reflect total plan benefit costs prior to the effects of capitalization and sharing with joint owners of power plants. Pension Benefits Post-Retirement Benefits Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Change in projected benefit obligation (PBO) (millions) PBO as of January 1, 2024 $ 1,704.4 $ 876.2 $ 809.7 $ 192.8 $ 97.8 $ 95.0 Service cost 46.0 19.0 27.0 1.6 0.9 0.7 Interest cost 89.5 45.6 43.0 10.1 5.1 5.0 Contribution by participants — — — 5.6 0.7 4.9 Plan amendments — — — 4.2 3.3 0.9 Actuarial gain (60.7) (28.2) (31.9) (13.0) (5.3) (7.7) Benefits paid (106.4) (58.3) (47.0) (20.4) (9.2) (11.2) Special termination loss 0.2 0.2 — — — — Other (8.0) (3.5) (4.5) — — — PBO as of December 31, 2024 $ 1,665.0 $ 851.0 $ 796.3 $ 180.9 $ 93.3 $ 87.6 Change in plan assets Fair value of plan assets as of January 1, 2024 $ 1,250.7 $ 620.6 $ 630.1 $ 201.5 $ 99.1 $ 102.4 Actual return on plan assets 122.2 62.3 59.9 14.2 7.6 6.6 Contributions by employer and participants 37.2 10.6 26.6 6.4 1.2 5.2 Benefits paid (102.7) (56.1) (46.6) (19.1) (8.8) (10.3) Other (8.0) (3.5) (4.5) — — — Fair value of plan assets as of December 31, 2024 $ 1,299.4 $ 633.9 $ 665.5 $ 203.0 $ 99.1 $ 103.9 Funded status as of December 31, 2024 $ (365.6) $ (217.1) $ (130.8) $ 22.1 $ 5.8 $ 16.3 Pension Benefits Post-Retirement Benefits Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Amounts recognized in the consolidated balance sheets (millions) Non-current asset $ — $ — $ — $ 33.9 $ 9.8 $ 24.1 Current pension and other post-retirement liability (5.0) (2.4) (1.1) (1.1) (0.5) (0.5) Noncurrent pension liability and other post-retirement liability (360.6) (214.7) (129.7) (10.7) (3.5) (7.3) Net amount recognized before regulatory treatment (365.6) (217.1) (130.8) 22.1 5.8 16.3 Accumulated OCI or regulatory asset/liability (173.2) 10.2 (174.7) (41.7) (20.3) (27.3) Net amount recognized as of December 31, 2024 $ (538.8) $ (206.9) $ (305.5) $ (19.6) $ (14.5) $ (11.0) Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost: Actuarial gain $ (183.0) $ (1.2) $ (173.4) $ (46.5) $ (23.9) $ (23.8) Prior service cost 9.8 11.4 (1.3) 4.8 3.6 (3.5) Net amount recognized as of December 31, 2024 $ (173.2) $ 10.2 $ (174.7) $ (41.7) $ (20.3) $ (27.3) Pension Benefits Post-Retirement Benefits Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Change in projected benefit obligation (PBO) (millions) PBO as of January 1, 2023 $ 1,850.5 $ 911.7 $ 920.6 $ 201.7 $ 103.0 $ 98.6 Service cost 44.9 18.6 26.3 1.8 0.9 0.9 Interest cost 91.9 47.0 44.0 11.1 5.7 5.5 Contribution by participants — — — 6.2 1.0 5.2 Actuarial (gain) loss 64.8 42.2 22.0 (4.0) (2.6) (1.4) Benefits paid (84.1) (50.6) (32.3) (24.0) (10.2) (13.8) Settlements (256.2) (89.3) (166.9) — — — Other (7.4) (3.4) (4.0) — — — PBO as of December 31, 2023 $ 1,704.4 $ 876.2 $ 809.7 $ 192.8 $ 97.8 $ 95.0 Change in plan assets Fair value of plan assets as of January 1, 2023 $ 1,409.2 $ 668.5 $ 740.7 $ 192.9 $ 96.2 $ 96.7 Actual return on plan assets 145.2 75.5 69.7 21.6 11.5 10.1 Contributions by employer and participants 36.8 15.1 21.7 9.6 1.2 8.4 Benefits paid (80.2) (48.2) (32.0) (22.6) (9.8) (12.8) Settlements (252.9) (86.9) (166.0) — — — Other (7.4) (3.4) (4.0) — — — Fair value of plan assets as of December 31, 2023 $ 1,250.7 $ 620.6 $ 630.1 $ 201.5 $ 99.1 $ 102.4 Funded status as of December 31, 2023 $ (453.7) $ (255.6) $ (179.6) $ 8.7 $ 1.3 $ 7.4 Pension Benefits Post-Retirement Benefits Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Amounts recognized in the consolidated balance sheets (millions) Non-current asset $ — $ — $ — $ 24.7 $ 5.0 $ 19.7 Current pension and other post-retirement liability (4.5) (2.5) (0.5) (1.1) (0.5) (0.6) Noncurrent pension liability and other post- (449.2) (253.1) (179.1) (14.9) (3.2) (11.7) Net amount recognized before regulatory treatment (453.7) (255.6) (179.6) 8.7 1.3 7.4 Accumulated OCI or regulatory asset/liability (92.4) 60.7 (144.1) (34.0) (18.6) (21.7) Net amount recognized as of December 31, 2023 $ (546.1) $ (194.9) $ (323.7) $ (25.3) $ (17.3) $ (14.3) Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost: Actuarial (gain) loss $ (104.1) $ 47.3 $ (142.8) $ (34.7) $ (19.0) $ (16.9) Prior service cost 11.7 13.4 (1.3) 0.7 0.4 (4.8) Net amount recognized as of December 31, 2023 $ (92.4) $ 60.7 $ (144.1) $ (34.0) $ (18.6) $ (21.7) Actuarial gains for the Evergy Companies' pension benefit plans for 2024 were primarily driven by an increase in the discount rate used to measure the benefit obligation as a result of higher market interest rates. Actuarial losses for the Evergy Companies' pension benefit plans for 2023 were primarily driven by a decrease in the discount rate used to measure the benefit obligation as a result of lower market interest rates. See the weighted average assumptions used to determine the benefit obligations within this Note 9 for further information. As of December 31, 2024 and 2023, Evergy's pension benefits include non-qualified benefit obligations of $36.0 million and $38.0 million, respectively, which are funded by trusts containing assets of $31.4 million and $33.3 million, respectively. As of December 31, 2024 and 2023, Evergy Kansas Central's pension benefits include non-qualified benefit obligations of $18.4 million and $19.5 million, respectively, which are funded by trusts containing assets of $23.4 million and $24.5 million, respectively. The assets in the aforementioned trusts are not included in the table above. See Note 14 for more information on these amounts. Pension Benefits Post-Retirement Benefits Year Ended December 31, 2024 Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Components of net periodic benefit costs (millions) Service cost $ 46.0 $ 19.0 $ 27.0 $ 1.6 $ 0.9 $ 0.7 Interest cost 89.5 45.6 43.0 10.1 5.1 5.0 Expected return on plan assets (86.7) (43.0) (43.7) (11.5) (5.9) (5.6) Prior service cost 1.9 1.9 — 0.1 0.1 (0.4) Recognized net actuarial (gain) loss (17.4) 0.9 (17.5) (3.9) (2.0) (1.8) Special termination benefits 0.2 0.2 — — — — Net periodic benefit costs before regulatory adjustment and intercompany allocations 33.5 24.6 8.8 (3.6) (1.8) (2.1) Regulatory adjustment 24.1 (6.4) 29.8 (0.1) 0.8 (0.6) Intercompany allocations n/a (1.9) (2.2) n/a (0.1) 0.6 Net periodic benefit costs (income) 57.6 16.3 36.4 (3.7) (1.1) (2.1) Other changes in plan assets and benefit obligations recognized in OCI or regulatory assets/liabilities Current year net gain (96.3) (47.7) (48.1) (15.7) (7.0) (8.7) Amortization of gain (loss) 17.4 (0.9) 17.5 3.9 2.0 1.8 Prior service cost — — — 4.2 3.4 0.9 Amortization of prior service cost (1.9) (1.9) — (0.1) (0.1) 0.4 Total recognized in OCI or regulatory asset/liability (80.8) (50.5) (30.6) (7.7) (1.7) (5.6) Total recognized in net periodic benefit costs and OCI or regulatory asset/liability $ (23.2) $ (34.2) $ 5.8 $ (11.4) $ (2.8) $ (7.7) Pension Benefits Post-Retirement Benefits Year Ended December 31, 2023 Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Components of net periodic benefit costs (millions) Service cost $ 44.9 $ 18.6 $ 26.3 $ 1.8 $ 0.9 $ 0.9 Interest cost 91.9 47.0 44.0 11.1 5.7 5.5 Expected return on plan assets (87.6) (44.1) (43.4) (11.9) (6.3) (5.7) Prior service cost 1.9 2.0 — 0.1 — (0.4) Recognized net actuarial gain (21.5) (2.5) (18.2) (4.2) (2.0) (2.1) Settlement (gain) loss (21.1) 1.1 (22.2) — — — Net periodic benefit costs before regulatory adjustment and intercompany allocations 8.5 22.1 (13.5) (3.1) (1.7) (1.8) Regulatory adjustment 94.0 30.4 63.0 (0.1) (1.7) 2.1 Intercompany allocations n/a (2.3) (1.1) n/a 0.3 — Net periodic benefit costs (income) 102.5 50.2 48.4 (3.2) (3.1) 0.3 Other changes in plan assets and benefit obligations recognized in OCI or regulatory assets/liabilities Current year net (gain) loss 7.1 11.0 (4.2) (13.6) (7.8) (5.8) Amortization of gain 21.5 2.5 18.2 4.2 2.0 2.1 Amortization of prior service cost (1.9) (2.0) — (0.1) — 0.4 Net gain (loss) due to settlement 21.1 (1.1) 22.2 — — — Total recognized in OCI or regulatory asset/liability 47.8 10.4 36.2 (9.5) (5.8) (3.3) Total recognized in net periodic benefit costs and OCI or regulatory asset/liability $ 150.3 $ 60.6 $ 84.6 $ (12.7) $ (8.9) $ (3.0) Pension Benefits Post-Retirement Benefits Year Ended December 31, 2022 Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Components of net periodic benefit costs (millions) Service cost $ 79.7 $ 30.7 $ 49.0 $ 3.0 $ 1.5 $ 1.5 Interest cost 79.3 38.8 39.8 7.9 4.1 3.8 Expected return on plan assets (104.0) (51.2) (56.4) (10.2) (6.5) (3.7) Prior service cost 1.9 2.0 — 0.5 0.4 (1.4) Recognized net actuarial (gain) loss 34.8 25.6 38.6 (0.3) (0.2) (0.7) Special termination benefits 52.8 15.6 37.2 6.7 1.4 5.3 Net periodic benefit costs before regulatory adjustment and intercompany allocations 144.5 61.5 108.2 7.6 0.7 4.8 Regulatory adjustment 14.7 0.7 (12.1) (7.1) (3.6) (1.3) Intercompany allocations n/a 2.9 (18.4) n/a 0.3 (0.6) Net periodic benefit costs (income) 159.2 65.1 77.7 0.5 (2.6) 2.9 Other changes in plan assets and benefit obligations recognized in OCI or regulatory assets/liabilities Current year net gain (421.4) (186.1) (226.7) (13.0) (3.0) (10.0) Amortization of gain (loss) (34.7) (25.6) (38.6) 0.4 0.2 0.7 Amortization of prior service cost (1.9) (2.0) — (0.5) (0.4) 1.4 Total recognized in OCI or regulatory asset/liability (457.4) (213.3) (264.9) (13.1) (3.2) (7.9) Total recognized in net periodic benefit costs and OCI or regulatory asset/liability $ (298.2) $ (148.2) $ (187.2) $ (12.6) $ (5.8) $ (5.0) For financial reporting purposes, the estimated prior service cost and net actuarial (gain) loss for the defined benefit plans are amortized from accumulated other comprehensive income (OCI) or a regulatory asset/liability into net periodic benefit cost. The Evergy Companies amortize prior service cost on a straight-line basis over the average future service of the active employees (plan participants) benefiting under the plan. The Evergy Companies amortize the net actuarial (gain) loss on a straight-line basis over the average future service of active plan participants benefiting under the plan without application of an amortization corridor. Pension and other post-retirement benefit plans with the PBO, accumulated benefit obligation (ABO) or accumulated other post-retirement benefit obligation (APBO) in excess of the fair value of plan assets at year-end are detailed in the following tables. December 31, 2024 Evergy Evergy Kansas Central Evergy Metro (millions) ABO for all defined benefit pension plans $ 1,503.6 $ 785.9 $ 700.2 Pension plans with the PBO in excess of plan assets Projected benefit obligation $ 1,665.0 $ 851.0 $ 796.3 Fair value of plan assets 1,299.4 633.9 665.5 Pension plans with the ABO in excess of plan assets Accumulated benefit obligation $ 1,503.6 $ 785.9 $ 700.2 Fair value of plan assets 1,299.4 633.9 665.5 Other post-retirement benefit plans with the APBO in excess of plan assets Accumulated other post-retirement benefit obligation $ 78.8 $ 3.7 $ 75.1 Fair value of plan assets 67.3 — 67.3 December 31, 2023 Evergy Evergy Kansas Central Evergy Metro (millions) ABO for all defined benefit pension plans $ 1,539.7 $ 809.9 $ 711.3 Pension plans with the PBO in excess of plan assets Projected benefit obligation $ 1,704.4 $ 876.2 $ 809.7 Fair value of plan assets 1,250.7 620.6 630.1 Pension plans with the ABO in excess of plan assets Accumulated benefit obligation $ 1,539.7 $ 809.9 $ 711.3 Fair value of plan assets 1,250.7 620.6 630.1 Other post-retirement benefit plans with the APBO in excess of plan assets Accumulated other post-retirement benefit obligation $ 82.6 $ 3.5 $ 79.1 Fair value of plan assets 66.9 — 66.9 The expected long-term rate of return on plan assets represents the Evergy Companies' estimate of the long-term return on plan assets and is based on historical and projected rates of return for current and planned asset classes in the plans' investment portfolios. Assumed projected rates of return for each asset class were selected after analyzing historical experience and future expectations of the returns of various asset classes. Based on the target asset allocation for each asset class, the overall expected rate of return for the portfolios was developed and adjusted for the effect of projected benefits paid from plan assets and future plan contributions. The following tables provide the weighted-average assumptions used to determine benefit obligations and net costs for the Evergy Companies' pension and post-retirement benefit plans. Weighted-average assumptions used to determine the benefit obligation at December 31, 2024 Pension Benefits Post-Retirement Benefits Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Discount rate 5.77 % 5.76 % 5.79 % 5.79 % 5.79 % 5.78 % Rate of compensation increase 3.72 % 3.77 % 3.70 % 3.75 % n/a 3.75 % Interest crediting rate for cash balance plans 4.40 % 4.20 % 4.63 % n/a n/a n/a Weighted-average assumptions used to determine the benefit obligation at December 31, 2023 Pension Benefits Post-Retirement Benefits Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Discount rate 5.35 % 5.34 % 5.35 % 5.43 % 5.45 % 5.41 % Rate of compensation increase 3.72 % 3.77 % 3.71 % 3.75 % n/a 3.75 % Interest crediting rate for cash balance plans 4.13 % 4.20 % 4.47 % n/a n/a n/a Weighted-average assumptions used to determine net costs for the year ended December 31, 2024 Pension Benefits Post-Retirement Benefits Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Discount rate 5.35 % 5.34 % 5.35 % 5.43 % 5.45 % 5.41 % Expected long-term return on plan assets 6.84 % 6.90 % 6.79 % 5.48 % 5.75 % 5.22 % Rate of compensation increase 3.72 % 3.77 % 3.71 % 3.75 % n/a 3.75 % Interest crediting rate for cash balance plans 4.13 % 4.20 % 4.47 % n/a n/a n/a Weighted-average assumptions used to determine net costs for the year ended December 31, 2023 Pension Benefits Post-Retirement Benefits Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Discount rate 5.45 % 5.66 % 5.62 % 5.74 % 5.75 % 5.72 % Expected long-term return on plan assets 6.71 % 6.80 % 6.62 % 5.48 % 5.75 % 5.22 % Rate of compensation increase 3.72 % 3.78 % 3.70 % 3.75 % n/a 3.75 % Interest crediting rate for cash balance plans 4.13 % 4.00 % 4.43 % n/a n/a n/a Evergy expects to contribute $64.7 million to the pension plans in 2025 to meet Employee Retirement Income Security Act of 1974, as amended (ERISA) funding requirements and regulatory orders, of which $29.7 million is expected to be paid by Evergy Kansas Central and $35.0 million is expected to be paid by Evergy Metro. The Evergy Companies' funding policy is to contribute amounts sufficient to meet the ERISA funding requirements and MPSC and KCC rate orders plus additional amounts as considered appropriate; therefore, actual contributions may differ from expected contributions. Also in 2025, Evergy expects to contribute $0.6 million to the post-retirement benefit plans, of which $0.3 million is expected to be paid by Evergy Kansas Central and $0.3 million is expected to be paid by Evergy Metro. The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid through 2034. Pension Benefits Post-Retirement Benefits Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro (millions) 2025 $ 142.7 $ 76.9 $ 64.3 $ 16.9 $ 9.4 $ 7.5 2026 143.4 75.5 66.4 16.3 9.0 7.3 2027 144.2 74.5 68.2 15.8 8.8 7.0 2028 144.6 73.4 69.6 14.0 7.7 6.3 2029 143.8 72.3 69.9 13.6 7.4 6.2 2030-2034 719.1 345.3 366.7 63.9 34.1 29.8 As of December 31, 2024, Evergy Kansas Central and Evergy Metro maintained a master trust for their non-union and Evergy Kansas Central's union pension benefits and a separate trust for Evergy Metro's union pension benefits. Evergy Kansas Central and Evergy Metro maintained separate trusts for their post-retirement benefits as of December 31, 2024. These plans are managed in accordance with prudent investor guidelines contained in the ERISA requirements. The primary objective of Evergy Kansas Central's and Evergy Metro's pension plans is to provide a source of retirement income for its participants and beneficiaries, and the primary financial objectives of the plans are to minimize funding deficiencies and maintain the plans' ability to pay all benefit and expense obligations when due. The primary objective of Evergy Kansas Central's and Evergy Metro's post-retirement benefit plans is to preserve capital, maintain sufficient liquidity and earn a consistent rate of return. The investment strategies of both the Evergy Kansas Central and Evergy Metro pension and post-retirement plans support the above objectives of the plans. The portfolios are invested, and periodically rebalanced, to achieve the targeted allocations detailed below. The following table provides the target asset allocations by asset class for the Evergy Kansas Central and Evergy Metro pension and other post-retirement plan assets. Pension Benefits Post-Retirement Benefits Evergy Kansas Central Evergy Metro Evergy Kansas Central Evergy Metro Domestic equities 26% 25% 26% 20% International equities 20% 21% 18% 10% Bonds 39% 37% 56% 62% Mortgage & asset backed securities —% —% —% 7% Real estate investments 4% 6% —% —% Other investments 11% 11% —% 1% Fair Value Measurements Evergy classifies recurring and non-recurring fair value measurements based on the fair value hierarchy as discussed in Note 14. The following are descriptions of the valuation methods of the primary fair value measurements disclosed below. Domestic equities - consist of individually held domestic equity securities and domestic equity mutual funds. Securities and funds, which are publicly quoted, are valued based on quoted prices in active markets and are categorized as Level 1. Funds that are valued by fund administrators using the net asset value (NAV) per fund share, derived from the quoted prices in active markets of the underlying securities are not classified within the fair value hierarchy. International equities - consist of individually held international equity securities and international equity mutual funds. Securities and funds, which are publicly quoted, are valued based on quoted prices in active markets and are categorized as Level 1. Bond funds - consist of funds maintained by investment companies that invest in various types of fixed income securities consistent with the funds' stated objectives. Securities and funds, which are publicly quoted, are valued based on quoted prices in active markets and are categorized as Level 1. Corporate bonds - consists of individually held, primarily domestic, corporate bonds that are traded in less than active markets or priced with models using highly observable inputs that are categorized as Level 2. U.S. Treasury and agency bonds - consists of individually held U.S. Treasury securities and U.S. agency bonds. U.S. Treasury securities, which are publicly quoted, are valued based on quoted prices in active markets and are categorized as a Level 1. U.S. agency bonds, which are publicly quoted, are traded in less than active markets or priced with models using highly observable inputs and are categorized as Level 2. Mortgage and asset backed securities - consists of individually held securities that are traded in less than active markets or valued with models using highly observable inputs that are categorized as Level 2. Real estate investments - consists of institutional trust funds valued at NAV per fund share and are not categorized in the fair value hierarchy. Combination debt/equity/other fund - consists of a fund that invests in various types of debt, equity and other asset classes consistent with the fund's stated objectives. The fund, which is publicly quoted, is valued based on quoted prices in active markets and is categorized as Level 1. Alternative investments - consists of investments in institutional trust and hedge funds that are valued by fund administrators using the NAV per fund share, derived from the underlying investments of the fund, and are not classified within the fair value hierarchy. Short-term investments - consists of fund investments in high-quality, short-term, U.S. dollar-denominated instruments with an average maturity of 60 days that are valued at NAV per fund share and are not categorized in the fair value hierarchy. Cash and cash equivalents - consists of investments with original maturities of three months or less when purchased that are traded in active markets and are categorized as Level 1. The fair values of the Evergy Companies' pension plan assets as of December 31, 2024 and 2023, by asset category are in the following tables. Fair Value Measurements Using December 31 Level 1 Level 2 Level 3 Assets measured at NAV Evergy Kansas Central Pension Plans (millions) Domestic equities $ 146.4 $ 128.5 $ — $ — $ 17.9 International equities 114.6 114.6 — — — Bond funds 224.7 224.7 — — — Real estate investments 22.3 — — — 22.3 Combination debt/equity/other fund 32.5 32.5 — — — Alternative investment funds 88.3 — — — 88.3 Short-term investments 5.1 — — — 5.1 Total $ 633.9 $ 500.3 $ — $ — $ 133.6 Evergy Metro Pension Plans Domestic equities $ 150.4 $ 137.2 $ — $ — $ 13.2 International equities 128.7 128.7 — — — Bond funds 181.7 181.7 — — — Corporate bonds 19.3 — 19.3 — — U.S. Treasury and agency bonds 13.1 7.1 6.0 — — Mortgage and asset backed securities 4.4 — 4.4 — — Real estate investments 42.9 — — — 42.9 Combination debt/equity/other fund 33.2 33.2 — — — Alternative investment funds 79.1 — — — 79.1 Cash and cash equivalents 6.1 6.1 — — — Short-term investments 3.8 — — — 3.8 Other 2.8 — 2.8 — — Total $ 665.5 $ 494.0 $ 32.5 $ — $ 139.0 Fair Value Measurements Using December 31 Level 1 Level 2 Level 3 Assets measured at NAV Evergy Kansas Central Pension Plans (millions) Domestic equities $ 145.9 $ 124.0 $ — $ — $ 21.9 International equities 118.2 118.2 — — — Bond funds 224.2 224.2 — — — Real estate investments 23.0 — — — 23.0 Combination debt/equity/other fund 29.2 29.2 — — — Alternative investment funds 74.6 — — — 74.6 Short-term investments 5.5 — — — 5.5 Total $ 620.6 $ 495.6 $ — $ — $ 125.0 Evergy Metro Pension Plans Domestic equities $ 138.9 $ 122.9 $ — $ — $ 16.0 International equities 120.0 120.0 — — — Bond funds 174.9 174.9 — — — Corporate bonds 21.1 — 21.1 — — U.S. Treasury and agency bonds 10.1 5.1 5.0 — — Mortgage and asset backed securities 5.1 — 5.1 — — Real estate investments 49.0 — — — 49.0 Combination debt/equity/other fund 28.4 28.4 — — — Alternative investment funds 70.8 — — — 70.8 Cash and cash equivalents 5.9 5.9 — — — Short-term investments 4.0 — — — 4.0 Other 1.9 — 1.9 — — Total $ 630.1 $ 457.2 $ 33.1 $ — $ 139.8 The fair values of the Evergy Companies' post-retirement plan assets as of December 31, 2024 and 2023, by asset category are in the following tables. Fair Value Measurements Using December 31 Level 1 Level 2 Level 3 Assets measured at NAV Evergy Kansas Central Post-Retirement Benefit Plans (millions) Domestic equities $ 26.1 $ 26.1 $ — $ — $ — International equities 17.3 17.3 — — — Bond funds 49.9 49.9 — — — Combination debt/equity/other fund 4.8 4.8 — — — Short-term investments 1.0 — — — 1.0 Total $ 99.1 $ 98.1 $ — $ — $ 1.0 Evergy Metro Post-Retirement Benefit Plans Domestic equities $ 20.5 $ 20.5 $ — $ — $ — International equities 11.3 11.3 — — — Bond funds 37.6 37.6 — — — Corporate bonds 14.5 — 14.5 — — U.S. Treasury and agency bonds 14.0 6.7 7.3 — — Mortgage and asset backed securities 0.6 — 0.6 — — Combination debt/equity/other fund 3.3 3.3 — — — Cash and cash equivalents 1.7 1.7 — — — Short-term investments 0.2 — — — 0.2 Other 0.2 — 0.2 — — Total $ 103.9 $ 81.1 $ 22.6 $ — $ 0.2 Fair Value Measurements Using December 31 Level 1 Level 2 Level 3 Assets measured at NAV Evergy Kansas Central Post-Retirement Benefit Plans (millions) Domestic equities $ 26.1 $ 26.1 $ — $ — $ — International equities 17.9 17.9 — — — Bond funds 49.6 49.6 — — — Combination debt/equity/other fund 4.5 4.5 — — — Short-term investments 1.0 — — — 1.0 Total $ 99.1 $ 98.1 $ — $ — $ 1.0 Evergy Metro Post-Retirement Benefit Plans Domestic equities $ 21.8 $ 21.8 $ — $ — $ — International equities 12.1 12.1 — — — Bond funds 36.8 36.8 — — — Corporate bonds 15.0 — 15.0 — — U.S. Treasury and agency bonds 12.2 6.1 6.1 — — Mortgage and asset backed securities 1.0 — 1.0 — — Combination debt/equity/other fund 3.0 3.0 — — — Short-term investments 0.2 — — — 0.2 Other 0.3 — 0.3 — — Total $ 102.4 $ 79.8 $ 22.4 $ — $ 0.2 Assumed health care cost trend rates have a significant effect on the amounts reported for the health care plans. The cost trend assumptions are detailed in the following tables. Assumed annual health care cost growth rates as of December 31, 2024 Evergy Evergy Kansas Central Evergy Metro Health care cost trend rate assumed for next year 7.0 % n/a 7.0 % Rate to which the cost trend is assumed to decline (the ultimate trend rate) 4.5 % n/a 4.5 % Year that rate reaches ultimate trend 2032 n/a 2032 Assumed annual health care cost growth rates as of December 31, 2023 Evergy Evergy Kansas Central Evergy Metro Health care cost trend rate assumed for next year 6.9 % 6.9 % 6.9 % Rate to which the cost trend is assumed to decline (the ultimate trend rate) 4.5 % 4.5 % 4.5 % Year that rate reaches ultimate trend 2030 2030 2030 Employee Savings Plans Evergy has defined contribution savings plans (401(k)) that cover substantially all employees. Evergy matches employee contributions, subject to limits. The annual costs of the plans are detailed in the following table. 2024 2023 2022 (millions) Evergy $ 25.8 $ 24.1 $ 25.3 Evergy Kansas Central 12.2 11.3 12.0 Evergy Metro 13.6 12.8 13.3

EQUITY COMPENSATION

EQUITY COMPENSATION	12 Months Ended
	Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]
EQUITY COMPENSATION	EQUITY COMPENSATION Evergy's Long-Term Incentive Plan is an equity compensation plan approved by Evergy shareholders. The Long-Term Incentive Plan permits the grant of restricted stock, restricted stock units, bonus shares, stock options, stock appreciation rights, limited stock appreciation rights, director shares, director deferred share units and performance shares to directors, officers and other employees of Evergy. Common stock shares delivered by Evergy under the Long-Term Incentive Plan may be authorized but unissued, held in the treasury or purchased on the open market (including private purchases) in accordance with applicable securities laws. Evergy has a policy of delivering newly issued shares and does not expect to repurchase common shares during 2025 to satisfy equity compensation payments and director deferred share unit conversion. Evergy recognizes forfeitures as they occur. The following table summarizes the Evergy Companies' equity compensation expense and the associated income tax benefit. 2024 2023 2022 Evergy (millions) Equity compensation expense $ 15.2 $ 17.7 $ 18.8 Income tax benefit 1.9 1.6 2.6 Evergy Kansas Central Equity compensation expense 6.7 6.5 8.4 Income tax benefit 1.5 1.4 1.7 Evergy Metro Equity compensation expense 4.5 5.7 6.0 Income tax (expense) benefit — (0.6) 0.2 Restricted Share Units Evergy utilizes RSUs for new grants of stock-based compensation awards. RSU awards are grants that entitle the holder to receive shares of common stock as the awards vest. These RSU awards are defined as nonvested shares and do not include restrictions once the awards have vested. These RSUs either take the form of RSUs with performance measures that vest upon the achievement of specific performance goals or RSUs with only service requirements that vest solely upon the passage of time. RSUs with Performance Measures The payment of RSUs with performance measures is contingent upon achievement of specific performance goals over a stated period of time as approved by the Compensation and Leadership Development Committee of the Board. The numbers of RSUs with performances measures ultimately paid can vary from the numbers of RSUs with performance measures initially granted depending on Evergy's performance over the stated performance periods. Compensation expense for RSUs with performance measures is calculated by recognizing the portion of the fair value for each reporting period for which the requisite service has been rendered. Dividends are accrued over the vesting period and paid in cash based on the number of RSUs with performance measures ultimately paid. The fair value of RSUs with performance measures is estimated using the market value of Evergy's stock at the valuation date and a Monte Carlo simulation technique that incorporates assumptions for inputs of expected volatilities, dividend yield and risk-free rates. Expected volatility is based on daily stock price change during a historical period commensurate with the remaining term of the performance period of the grant. The risk-free rate is based upon the rate at the time of the evaluation for zero-coupon government bonds with a maturity consistent with the remaining performance period of the grant. The dividend yield is based on the most recent dividends paid and the actual closing stock price on the valuation date. For shares granted in 2024, inputs for expected volatility, dividend yield and the risk-free rate were 21%, 4.15% - 5.21% and 3.53% - 4.28%, respectively. RSU activity for awards with performance measures for 2024 is summarized in the following table. Nonvested Grant Date Beginning balance as of January 1, 2024 663,727 $ 58.32 Granted 295,803 49.94 Vested (165,464) 61.41 Adjusted (61,194) 61.41 Forfeited (102,185) 54.28 Ending balance as of December 31, 2024 630,687 55.45 * weighted-average As of December 31, 2024, the remaining weighted-average contractual term related to RSU awards with performance measures was 1.3 years. The weighted-average grant-date fair value of RSUs granted with performance measures was $49.94, $59.77 and $57.95 in 2024, 2023 and 2022, respectively. As of December 31, 2024, there was $12.2 million of unrecognized compensation expense related to unvested RSUs with performance measures. The total fair value of RSUs with performance measures that vested was $10.2 million, $7.9 million and $5.5 million in 2024, 2023, and 2022, respectively. RSUs with Only Service Requirements Evergy measures the fair value of RSUs with only service requirements based on the fair market value of the underlying common stock as of the grant date. RSU awards with only service conditions recognize compensation expense by multiplying shares by the grant-date fair value related to the RSU and recognizing it on a straight-line basis over the requisite service period for the entire award. Dividends are accrued over the vesting period and are invested in additional RSU's subject to the same service conditions. RSU activity for awards with only service requirements for 2024 is summarized in the following table. Nonvested Grant Date Beginning balance as of January 1, 2024 264,214 $ 57.76 Granted 199,816 51.22 Vested (120,813) 55.99 Forfeited (36,562) 53.96 Ending balance as of December 31, 2024 306,655 54.65 * weighted-average As of December 31, 2024, the remaining weighted-average contractual term related to RSU awards with only service requirements was 1.4 years. The weighted-average grant-date fair value of RSUs granted with only service requirements was $51.22, $57.47 and $60.93 in 2024, 2023 and 2022, respectively. As of December 31, 2024, there was $8.4 million of unrecognized compensation expense related to unvested RSUs. The total fair value of RSUs with only service requirements that vested was $6.8 million, $3.3 million and $4.7 million in 2024, 2023 and 2022, respectively.

SHORT-TERM BORROWINGS AND SHORT

SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDIT	12 Months Ended
	Dec. 31, 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 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 December 31, 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 December 31, 2024 and 2023. Amounts Drawn Master Credit Facility Commercial Paper Letters of Credit Cash Borrowings Available Borrowings Weighted Average Interest Rate on Short-Term Borrowings December 31, 2024 (millions) Evergy, Inc. $ 300.0 $ 75.4 $ 0.7 $ — $ 223.9 4.70% Evergy Kansas Central 1,100.0 797.3 1.0 — 301.7 4.74% Evergy Metro 600.0 158.7 1.0 — 440.3 4.64% Evergy Missouri West 500.0 176.2 — — 323.8 4.71% Evergy $ 2,500.0 $ 1,207.6 $ 2.7 $ — $ 1,289.7 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	12 Months Ended
	Dec. 31, 2024
Debt Disclosure [Abstract]
LONG-TERM DEBT	LONG-TERM DEBT The Evergy Companies' long-term debt is detailed in the following tables. December 31, 2024 Issuing Entity Year Due Evergy Evergy Kansas Central Evergy Metro Mortgage Bonds (millions) 3.25% Series Evergy Kansas Central, Inc. 2025 $ 250.0 $ 250.0 $ — 2.55% Series Evergy Kansas Central, Inc. 2026 350.0 350.0 — 3.10% Series Evergy Kansas Central, Inc. 2027 300.0 300.0 — 5.90% Series Evergy Kansas Central, Inc. 2033 300.0 300.0 — 4.125% Series Evergy Kansas Central, Inc. 2042 550.0 550.0 — 4.10% Series Evergy Kansas Central, Inc. 2043 430.0 430.0 — 4.625% Series Evergy Kansas Central, Inc. 2043 250.0 250.0 — 4.25% Series Evergy Kansas Central, Inc. 2045 300.0 300.0 — 3.25% Series Evergy Kansas Central, Inc. 2049 300.0 300.0 — 3.45% Series Evergy Kansas Central, Inc. 2050 500.0 500.0 — 5.70% Series Evergy Kansas Central, Inc. 2053 400.0 400.0 — 6.53% Series Evergy Kansas South, Inc. 2037 175.0 175.0 — 6.64% Series Evergy Kansas South, Inc. 2038 100.0 100.0 — 4.30% Series Evergy Kansas South, Inc. 2044 250.0 250.0 — 2.25% Series Evergy Metro, Inc. 2030 400.0 — 400.0 4.95% Series Evergy Metro, Inc. 2033 300.0 — 300.0 5.40% Series Evergy Metro, Inc. 2034 300.0 — 300.0 4.125% Series Evergy Metro, Inc. 2049 400.0 — 400.0 5.15% Series Evergy Missouri West, Inc. 2027 300.0 — — 3.75% Series Evergy Missouri West, Inc. 2032 250.0 — — 5.65% Series Evergy Missouri West, Inc. 2034 300.0 — — Pollution Control Bonds 3.19% Series (a) Evergy Kansas Central, Inc. 2032 45.0 45.0 — 3.19% Series (a) Evergy Kansas Central, Inc. 2032 30.5 30.5 — 3.19% Series (a) Evergy Kansas South, Inc. 2027 21.9 21.9 — 2.50% Series Evergy Kansas South, Inc. 2031 50.0 50.0 — 3.19% Series (a) Evergy Kansas South, Inc. 2032 14.5 14.5 — 3.19% Series (a) Evergy Kansas South, Inc. 2032 10.0 10.0 — 3.45% Series 2007A and 2007B (a) Evergy Metro, Inc. 2035 146.5 — 146.5 3.50% EIRR Bonds Evergy Metro, Inc. 2038 23.4 — 23.4 4.30% EIRR Bonds Evergy Metro, Inc. 2045 79.5 — 79.5 Senior Notes 3.65% Series (b) Evergy Metro, Inc. 2025 350.0 — 350.0 6.05% Series (5.78% rate) (b)(c) Evergy Metro, Inc. 2035 250.0 — 250.0 5.30% Series (b) Evergy Metro, Inc. 2041 400.0 — 400.0 4.20% Series (b) Evergy Metro, Inc. 2047 300.0 — 300.0 4.20% Series (b) Evergy Metro, Inc. 2048 300.0 — 300.0 3.49% Series A (d) Evergy Missouri West, Inc. 2025 36.0 — — 4.06% Series B (d) Evergy Missouri West, Inc. 2033 60.0 — — 4.74% Series C (d) Evergy Missouri West, Inc. 2043 150.0 — — 2.86% Series A (d) Evergy Missouri West, Inc. 2031 350.0 — — 3.01% Series B (d) Evergy Missouri West, Inc. 2033 75.0 — — 3.21% Series C (d) Evergy Missouri West, Inc. 2036 75.0 — — 2.90% Series (3.77% rate) (c) Evergy, Inc. 2029 800.0 — — Convertible Notes 4.50% Convertible Notes Evergy, Inc. 2027 1,400.0 — — Securitized Bonds 5.10% Securitized Bonds Evergy Missouri West Storm Funding I, LLC 2025 - 2040 319.6 — — Junior Subordinated Notes 6.65% Junior Subordinated Notes Evergy, Inc. 2055 500.0 — — Fair value adjustment (e) 81.7 — — Current maturities (f) (651.7) (250.0) (350.0) Unamortized debt discount and debt issuance costs (112.7) (43.4) (26.0) Total excluding current maturities (g) $ 11,809.2 $ 4,333.5 $ 2,873.4 December 31, 2023 Issuing Entity Year Due Evergy Evergy Kansas Central Evergy Metro Mortgage Bonds (millions) 3.25% Series Evergy Kansas Central, Inc. 2025 $ 250.0 $ 250.0 $ — 2.55% Series Evergy Kansas Central, Inc. 2026 350.0 350.0 — 3.10% Series Evergy Kansas Central, Inc. 2027 300.0 300.0 — 5.90% Series Evergy Kansas Central, Inc. 2033 300.0 300.0 — 4.125% Series Evergy Kansas Central, Inc. 2042 550.0 550.0 — 4.10% Series Evergy Kansas Central, Inc. 2043 430.0 430.0 — 4.625% Series Evergy Kansas Central, Inc. 2043 250.0 250.0 — 4.25% Series Evergy Kansas Central, Inc. 2045 300.0 300.0 — 3.25% Series Evergy Kansas Central, Inc. 2049 300.0 300.0 — 3.45% Series Evergy Kansas Central, Inc. 2050 500.0 500.0 — 5.70% Series Evergy Kansas South, Inc. 2053 400.0 400.0 — 6.53% Series Evergy Kansas South, Inc. 2037 175.0 175.0 — 6.64% Series Evergy Kansas South, Inc. 2038 100.0 100.0 — 4.30% Series Evergy Kansas South, Inc. 2044 250.0 250.0 — 2.25% Series Evergy Metro, Inc. 2030 400.0 — 400.0 4.95% Series Evergy Metro, Inc. 2033 300.0 — 300.0 4.125% Series Evergy Metro, Inc. 2049 400.0 — 400.0 5.15% Series Evergy Missouri West, Inc. 2027 300.0 — — 3.75% Series Evergy Missouri West, Inc. 2032 250.0 — — Pollution Control Bonds 3.66% Series (a) Evergy Kansas Central, Inc. 2032 45.0 45.0 — 3.66% Series (a) Evergy Kansas Central, Inc. 2032 30.5 30.5 — 3.66% Series (a) Evergy Kansas South, Inc. 2027 21.9 21.9 — 2.50% Series Evergy Kansas South, Inc. 2031 50.0 50.0 — 3.66% Series (a) Evergy Kansas South, Inc. 2032 14.5 14.5 — 3.66% Series (a) Evergy Kansas South, Inc. 2032 10.0 10.0 — 3.83% Series 2007A and 2007B (a) Evergy Metro, Inc. 2035 146.5 — 146.5 3.50% EIRR Bonds Evergy Metro, Inc. 2038 23.4 — 23.4 4.30% EIRR Bonds Evergy Metro, Inc. 2045 79.5 — 79.5 Senior Notes 3.65% Series (b) Evergy Metro, Inc. 2025 350.0 — 350.0 6.05% Series (5.78% rate) (b)(c) Evergy Metro, Inc. 2035 250.0 — 250.0 5.30% Series (b) Evergy Metro, Inc. 2041 400.0 — 400.0 4.20% Series (b) Evergy Metro, Inc. 2047 300.0 — 300.0 4.20% Series (b) Evergy Metro, Inc. 2048 300.0 — 300.0 3.49% Series A (d) Evergy Missouri West, Inc. 2025 36.0 — — 4.06% Series B (d) Evergy Missouri West, Inc. 2033 60.0 — — 4.74% Series C (d) Evergy Missouri West, Inc. 2043 150.0 — — 2.86% Series A (d) Evergy Missouri West, Inc. 2031 350.0 — — 3.01% Series B (d) Evergy Missouri West, Inc. 2033 75.0 — — 3.21% Series C (d) Evergy Missouri West, Inc. 2036 75.0 — — 2.45% Series Evergy, Inc. 2024 800.0 — — 2.90% Series (3.77% rate) (c) Evergy, Inc. 2029 800.0 — — Convertible Notes 4.50% Convertible Notes Evergy, Inc. 2027 1,400.0 — — Fair value adjustment (e) 87.0 — — Current maturities (f) (800.0) — — Unamortized debt discount and debt issuance costs (106.0) (46.5) (25.0) Total excluding current maturities (g) $ 11,053.3 $ 4,580.4 $ 2,924.4 (a) Variable rate. The bondholders of these tax-exempt bonds are permitted to tender the tax-exempt bonds to the issuer for purchase and, if tendered, the issuer is obligated to purchase any such bonds that cannot be remarketed to other investors. These tax-exempt bonds are classified as long-term debt due to the issuer's intent and ability to utilize such borrowings as long-term financing. (b) Effectively secured pursuant to the General Mortgage Indenture and Deed of Trust dated as of December 1, 1986, as supplemented (Evergy Metro Mortgage Indenture) through the issuance of collateral mortgage bonds to the trustee in 2019. (c) Rate after amortizing gains/losses recognized in OCI on settlements of interest rate hedging instruments. (d) Unconditionally guaranteed by Evergy, Inc. (e) Represents the fair value adjustments recorded at Evergy consolidated related to the long-term debt of Evergy Metro and Evergy Missouri West in connection with purchase accounting for the merger that created Evergy. This amount is not part of future principal payments and will amortize over the remaining life of the associated debt instruments. (f) Evergy's current maturities total as of December 31, 2024, includes ($0.5) million of fair value adjustments recorded in connection with purchase accounting for the merger that created Evergy. Evergy's current maturities total as of December 31, 2023, included no fair value adjustments recorded in connection with purchase accounting for the merger. (g) As of December 31, 2024 and 2023, does not include $50.0 million and $21.9 million of secured Series 2005 Environmental Improvement Revenue Refunding (EIRR) bonds because the bonds were repurchased in September 2015 and are held by Evergy Metro. Mortgage Bonds The Evergy Kansas Central and Evergy Kansas South mortgages each contain provisions restricting the amount of first mortgage bonds (FMBs) that could be issued by each entity. Evergy Kansas Central and Evergy Kansas South must be in compliance with such restrictions prior to the issuance of additional first mortgage bonds or other secured indebtedness. The amount of Evergy Kansas Central FMBs authorized by its Mortgage and Deed of Trust, dated July 1, 1939, as supplemented, is subject to certain limitations as described below. The amount of Evergy Kansas South FMBs authorized by the Evergy Kansas South Mortgage and Deed of Trust, dated April 1, 1940, as supplemented and amended, is limited to a maximum of $3.5 billion, unless amended further. FMBs are secured by utility assets. Amounts of additional FMBs that may be issued are subject to property, earnings and certain restrictive provisions, except in connection with certain refundings, of each mortgage. As of December 31, 2024, approximately $420.5 million and $2,878.6 million principal amounts of additional Evergy Kansas Central FMBs or Evergy Kansas South FMBs, respectively, could be issued under the most restrictive provisions of their mortgages. Evergy Metro has issued mortgage bonds under the Evergy Metro Mortgage Indenture, which creates a mortgage lien on substantially all Evergy Metro's utility plant. Additional Evergy Metro bonds may be issued on the basis of 75% of property additions or retired bonds. As of December 31, 2024, approximately $5,552.7 million principal amount of additional Evergy Metro mortgage bonds could be issued under the most restrictive provisions in the mortgage. Evergy Missouri West has issued mortgage bonds under the Evergy Missouri West Mortgage Indenture, establishing a first mortgage lien on substantially all of its present properties and certain after-acquired properties, subject to certain exceptions. Additional Evergy Missouri West mortgage bonds may be issued on the basis of 75% of property additions or retired bonds. As of December 31, 2024, approximately $2,137.2 million principal amount of additional Evergy Missouri West mortgage bonds could be issued under the most restrictive provisions in the mortgage. 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% FMBs, maturing in 2034. Proceeds were used to pay down commercial paper and for general corporate purposes. Senior Notes Under the terms of the note purchase agreements for certain Evergy Missouri West senior notes, Evergy Missouri West is required to maintain a consolidated indebtedness to consolidated capitalization ratio, as defined in the agreements, not greater than 0.65 to 1.00. In addition, Evergy Missouri West's priority debt, as defined in the agreements, cannot exceed 15% of consolidated tangible net worth, as defined in the agreements. As of December 31, 2024, Evergy Missouri West was in compliance with these covenants. In September 2024, Evergy, Inc. repaid its $800.0 million of 2.45% Senior Notes at maturity. Convertible Notes Interest on Evergy, Inc.'s $1.4 billion of 4.50% Convertible Notes (Convertible Notes) is payable semiannually, beginning June 2024. The Convertible Notes will mature in December 2027, unless earlier converted or repurchased, but are not redeemable at the option of Evergy, Inc. No sinking fund is provided for the Convertible Notes. The Convertible Notes are direct, senior unsecured obligations of Evergy, Inc. and rank equal in right of payment to any of Evergy, Inc.'s unsecured indebtedness that is not so subordinated, including Evergy, Inc.'s master revolving credit agreement that governs its senior unsecured revolving credit facility, its commercial paper obligations and its 2.9% Senior Notes due 2029. The Convertible Notes are not guaranteed by any of Evergy, Inc.'s subsidiaries. Holders may convert their Convertible Notes at any time prior to the close of business on the business day immediately preceding September 15, 2027 only under the following circumstances: a. During any calendar quarter commencing after the calendar quarter ending on March 31, 2024 (and only such calendar quarter), if the last reported sales price of Evergy, Inc. common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day; b. During the five business day period after any ten consecutive trading day period (Measurement Period) in which the trading price per $1,000 principal amount of Convertible Notes for each trading day of the Measurement Period was less than 98% of the product of the last reported sale price of Evergy, Inc. common stock and the conversion rate on each such trading day; or c. Upon the occurrence of specific corporate events specified in the indenture governing the Convertible Notes. On or after September 15, 2027 until the close of business on the business day immediately preceding the maturity date, a holder may convert their notes at any time, regardless of the foregoing circumstances. Upon conversion, Evergy, Inc. will pay cash up to the aggregate principal amount of the Convertible Notes to be converted and pay or deliver, as the case may be, cash, shares of Evergy, Inc. common stock or a combination of cash and shares of Evergy, Inc. common stock, at Evergy, Inc.’s election, in respect of the remainder, if any, of its conversion obligation in excess of the aggregate principal amount of the Convertible Notes being converted, as described in the indenture governing the Convertible Notes. The Convertible Notes are initially convertible at a rate of 16.1809 shares of Evergy, Inc. common stock per $1,000 principal amount of Convertible Notes, which is equivalent to an initial conversion price of approximately $61.80 per share of Evergy, Inc. common stock. The conversion rate will be subject to adjustment in some events but will not be adjusted for any accrued and unpaid interest. In addition, following certain corporate events that occur prior to the maturity date, Evergy, Inc. will, in certain circumstances, increase the conversion rate for a holder who elects to convert their Convertible Notes in connection with such a corporate event. If Evergy, Inc. undergoes a fundamental change, a holder may require Evergy, Inc. to repurchase for cash all or any portion of their Convertible Notes at a fundamental change repurchase price equal to 100% of the principal amount of the Convertible Notes to be repurchased, plus accrued and unpaid interest to, but excluding, the fundamental change repurchase date. Securitized Bonds In 2022, Evergy Missouri West created a special purpose subsidiary, Evergy Missouri West Storm Funding, a wholly-owned, bankruptcy remote entity 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 Utility Tariff Bonds (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. 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. Junior Subordinated Notes In December 2024, Evergy, Inc. issued $500.0 million in aggregate principal amount of 6.65% Fixed-to-Fixed Reset Rate Junior Subordinated Notes (Junior Subordinated Notes), maturing in 2055. The Junior Subordinated Notes will bear interest (i) from and including December 5, 2024 to, but excluding, June 1, 2030 at the rate of 6.65% per annum and (ii) from and including June 1, 2030, during each reset period at a rate per annum equal to the five-year U.S. Treasury rate (determined as described in the offering documents) as of the most recent reset interest determination date plus a spread of 2.558%, to be reset every five years until maturity. At Evergy, Inc.'s option, it may redeem some or all of the Junior Subordinated Notes during specified periods, and upon the occurrence of certain ratings or tax events, all as described in the offering documents. In accordance with terms of the Junior Subordinated Notes, Evergy, Inc. has the right, from time to time, to defer the payment of interest on the outstanding Junior Subordinated Notes on one or more occasions for up to 20 consecutive semi-annual interest payment periods. As more fully described in the offering documents, deferring the payment of interest on outstanding Junior Subordinated Notes will restrict Evergy, Inc.'s ability to execute certain actions, such as declaring or paying dividends, purchasing Evergy, Inc. stock or repaying principal on any indebtedness of Evergy that ranks equally with or junior to the Junior Subordinated Notes. Scheduled Maturities Evergy's, Evergy Kansas Central's and Evergy Metro's long-term debt maturities for the next five years are detailed in the following table. 2025 2026 2027 2028 2029 (millions) Evergy $ 652.2 $ 367.0 $ 2,039.8 $ 18.8 $ 819.8 Evergy Kansas Central 250.0 350.0 321.9 — — Evergy Metro 350.0 — — — —

DERIVATIVE INSTRUMENTS

DERIVATIVE INSTRUMENTS	12 Months Ended
	Dec. 31, 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 14 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. December 31 Non-hedging derivatives Notional volume unit of measure 2024 2023 Evergy (millions) Commodity contracts Power MWhs 51.3 52.9 Natural gas MMBtu 598.7 559.9 Evergy Kansas Central Commodity contracts Power MWhs 31.3 32.1 Natural gas MMBtu 598.7 558.7 Evergy Metro Commodity contracts Power MWhs 15.3 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. December 31 Evergy 2024 2023 Non-hedging derivatives Balance sheet location Commodity contracts (millions) Power Other assets - current $ 24.6 $ 23.2 Other assets - long-term 43.8 35.7 Natural gas Other assets - current 16.9 68.1 Other assets - long-term 2.1 6.0 Total derivative assets $ 87.4 $ 133.0 Commodity contracts Power Other liabilities - current $ 14.2 $ 21.0 Other liabilities - long-term 41.5 32.9 Natural gas Other liabilities - current 17.9 68.1 Other liabilities - long-term 2.1 6.8 Total derivative liabilities $ 75.7 $ 128.8 December 31 Evergy Kansas Central 2024 2023 Non-hedging derivatives Balance sheet location Commodity contracts (millions) Power Other assets - current $ 11.3 $ 18.3 Other assets - long-term 43.8 35.7 Natural gas Other assets - current 16.9 68.1 Other assets - long-term 2.1 6.0 Total derivative assets $ 74.1 $ 128.1 Commodity contracts Power Other liabilities - current $ 11.5 $ 14.3 Other liabilities - long-term 41.5 32.9 Natural gas Other liabilities - current 17.9 67.0 Other liabilities - long-term 2.1 6.8 Total derivative liabilities $ 73.0 $ 121.0 December 31 Evergy Metro 2024 2023 Non-hedging derivatives Balance sheet location Commodity contracts (millions) Power Other assets - current $ 10.1 $ 2.1 Total derivative assets $ 10.1 $ 2.1 Commodity contracts Power Other liabilities - current $ 2.0 $ 5.7 Total derivative liabilities $ 2.0 $ 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. December 31, 2024 Evergy Evergy Kansas Central Evergy Metro Derivative Assets (millions) Current Gross amounts recognized $ 41.5 $ 28.2 $ 10.1 Gross amounts offset (28.4) (25.7) (2.0) Net amounts presented in other assets - current $ 13.1 $ 2.5 $ 8.1 Long-Term Gross amounts recognized $ 45.9 $ 45.9 $ — Gross amounts offset (12.0) (12.0) — Net amounts presented in other assets - long-term $ 33.9 $ 33.9 $ — Derivative Liabilities Current Gross amounts recognized $ 32.1 $ 29.4 $ 2.0 Gross amounts offset (26.1) (23.4) (2.0) Net amounts presented in other liabilities - current $ 6.0 $ 6.0 $ — Long-Term Gross amounts recognized $ 43.6 $ 43.6 $ — Gross amounts offset (3.8) (3.8) — Net amounts presented in other liabilities - long-term $ 39.8 $ 39.8 $ — 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. Location of gain (loss) Contract type 2024 2023 2022 Evergy (millions) Operating revenues Commodity $ 23.6 $ 22.9 $ 84.6 Total $ 23.6 $ 22.9 $ 84.6 Evergy Kansas Central Operating revenues Commodity $ 23.6 $ 22.9 $ 84.6 Total $ 23.6 $ 22.9 $ 84.6 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 December 31, 2024, if counterparty groups completely failed to perform on contracts, Evergy's and Evergy Kansas Central's maximum exposure related to derivative assets was $40.5 million. As of December 31, 2024, the potential loss after the consideration of applicable master netting arrangements and collateral received for Evergy and Evergy Kansas Central was $27.6 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 December 31, 2024, was $44.2 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 December 31, 2024, Evergy and Evergy Kansas Central could be required to post an additional $41.7 million of collateral to their counterparties.

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	12 Months Ended
	Dec. 31, 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 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. December 31, 2024 December 31, 2023 Book Value Fair Value Book Value Fair Value Long-term debt (a) (millions) Evergy (b) $ 12,460.9 $ 11,535.0 $ 11,853.3 $ 11,044.9 Evergy Kansas Central 4,583.5 4,031.7 4,580.4 4,176.6 Evergy Metro 3,223.4 2,966.3 2,924.4 2,738.8 (a) Includes current maturities. (b) Book value as of December 31, 2024 and 2023, includes $81.7 million and $87.0 million, respectively, of fair value adjustments recorded in connection with purchase accounting for the merger that created Evergy, 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 December 31, 2024 Netting Level 1 Level 2 Level 3 NAV Evergy Kansas Central (millions) Assets Nuclear decommissioning trust (a) Domestic equity funds $ 142.9 $ — $ 134.0 $ — $ — $ 8.9 International equity funds 81.6 — 81.6 — — — Core bond fund 66.7 — 66.7 — — — High-yield bond fund 33.7 — 33.7 — — — Emerging markets bond fund 20.6 — 20.6 — — — Alternative investments fund 45.6 — — — — 45.6 Real estate securities fund 16.3 — — — — 16.3 Cash equivalents 0.5 — 0.5 — — — Total nuclear decommissioning trust 407.9 — 337.1 — — 70.8 Rabbi trust Fixed income funds 14.6 — 14.6 — — — Equity funds 6.9 — 6.9 — — — Combination debt/equity/other fund 1.7 — 1.7 — — — Cash equivalents 0.2 — 0.2 — — — Total rabbi trust 23.4 — 23.4 — — — Derivative instruments - commodity contracts (b) Power 35.1 (20.0) 11.7 40.5 2.9 — Natural gas 1.3 (17.7) 18.9 0.1 — — Total derivative assets 36.4 (37.7) 30.6 40.6 2.9 — Total assets 467.7 (37.7) 391.1 40.6 2.9 70.8 Liabilities Derivative instruments - commodity contracts (b) Power 43.5 (9.5) 4.5 44.2 4.3 — Natural gas 2.3 (17.7) 19.9 0.1 — — Total derivative liabilities 45.8 (27.2) 24.4 44.3 4.3 — Total liabilities $ 45.8 $ (27.2) $ 24.4 $ 44.3 $ 4.3 $ — Evergy Metro Assets Nuclear decommissioning trust (a) Equity securities $ 368.8 $ — $ 368.8 $ — $ — $ — Debt securities U.S. Treasury 55.3 — 55.3 — — — State and local obligations 2.1 — — 2.1 — — Corporate bonds 42.7 — — 42.7 — — Cash equivalents 3.0 — 3.0 — — — Total nuclear decommissioning trust 471.9 — 427.1 44.8 — — Self-insured health plan trust (c) Equity securities 2.3 — 2.3 — — — Debt securities 14.3 — 3.2 11.1 — — Cash and cash equivalents 2.3 — 2.3 — — — Total self-insured health plan trust 18.9 — 7.8 11.1 — — Derivative instruments - commodity contracts (b) Power 8.1 (2.0) — — 10.1 — Total derivative assets 8.1 (2.0) — — 10.1 — Total assets 498.9 (2.0) 434.9 55.9 10.1 — Liabilities Derivative instruments - commodity contracts (b) Power — (2.0) — — 2.0 — Total derivative liabilities — (2.0) — — 2.0 — Total liabilities $ — $ (2.0) $ — $ — $ 2.0 $ — Description December 31, 2024 Netting Level 1 Level 2 Level 3 NAV Other Evergy (millions) Assets Rabbi trusts Core bond fund $ 8.0 $ — $ 8.0 $ — $ — $ — Total rabbi trusts 8.0 — 8.0 — — — Derivative instruments - commodity contracts (b) Power 2.5 (0.7) — — 3.2 — Total derivative assets 2.5 (0.7) — — 3.2 — Total assets 10.5 (0.7) 8.0 — 3.2 — 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) $ 879.8 $ — $ 764.2 $ 44.8 $ — $ 70.8 Rabbi trusts 31.4 — 31.4 — — — Self-insured health plan trust (c) 18.9 — 7.8 11.1 — — Derivative instruments - commodity contracts (b) Power 45.7 (22.7) 11.7 40.5 16.2 — Natural gas 1.3 (17.7) 18.9 0.1 — — Total derivative assets 47.0 (40.4) 30.6 40.6 16.2 — Total assets 977.1 (40.4) 834.0 96.5 16.2 70.8 Liabilities Derivative instruments - commodity contracts (b) Power 43.5 (12.2) 4.5 44.2 7.0 — Natural gas 2.3 (17.7) 19.9 0.1 — — Total derivative liabilities 45.8 (29.9) 24.4 44.3 7.0 — Total liabilities $ 45.8 $ (29.9) $ 24.4 $ 44.3 $ 7.0 $ — 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. December 31, 2024 December 31, 2023 December 31, 2024 Fair Unfunded Fair Unfunded Redemption Length of Value Commitments Value Commitments Frequency Settlement Evergy Kansas Central (millions) Nuclear decommissioning trust: Domestic equity funds $ 8.9 $ 1.3 $ 9.8 $ 1.4 (a) (a) Alternative investments fund (b) 45.6 — 37.9 — Quarterly 65 days Real estate securities fund (b) 16.3 — 17.2 — Quarterly 65 days Total Evergy investments at NAV $ 70.8 $ 1.3 $ 64.9 $ 1.4 (a) This investment is in four 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. 2024 2023 2022 Evergy (millions) Nuclear decommissioning trust - equity securities $ 89.3 $ 80.4 (123.3) Nuclear decommissioning trust - debt securities (1.1) 2.7 (15.2) Rabbi trusts - equity securities 0.4 2.4 (7.1) Total $ 88.6 $ 85.5 $ (145.6) Evergy Kansas Central Nuclear decommissioning trust - equity securities $ 31.1 $ 28.3 (62.8) Rabbi trust - equity securities 0.4 2.0 (5.4) Total $ 31.5 $ 30.3 $ (68.2) Evergy Metro Nuclear decommissioning trust - equity securities $ 58.2 $ 52.1 (60.5) Nuclear decommissioning trust - debt securities (1.1) 2.7 (15.2) Total $ 57.1 $ 54.8 $ (75.7)

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Dec. 31, 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. States were required to submit ITSIPs in 2018 to comply with the "Good Neighbor Provision" of the Clean Air Act (CAA) as it applies to the revised NAAQS. 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. In January 2025, Kansas proposed to designate the entire state of Kansas as either attainment or attainment/unclassifiable for the 2024 annual PM 2.5 NAAQS. The EPA will issue final designations for all states, including Kansas, by February 2026. 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 did not include any 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. In December 2024, a three judge panel of the D.C. Circuit heard oral arguments on challenges to the merits of the rule. 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. Flue Gas Desulfurization (FGD) wastewater, bottom ash transport wastewater (BATW), coal residual leachate (CRL), and legacy wastewater are addressed in the rulemaking. FGD wastewater, 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 BATW 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. In October 2024, the Eighth Circuit denied a motion to stay the ELG. Additional litigation is ongoing 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. 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. Litigation could impact the timing or cost to comply. The Evergy Companies have recorded AROs for their current estimates for the closure of ash disposal ponds and landfills and recorded additional ARO liabilities in the second quarter of 2024 related to the April 2024 CCR regulation. See Note 6 for additional information on AROs. The revision of these AROs may be required in the future due to information collected in the April 2024 CCR regulation's Facility Evaluation Reports (FERs), changes in existing CCR regulations, the results of groundwater monitoring of CCR units or changes in interpretation of existing CCR regulations or changes in the timing or cost to close ash disposal ponds and landfills. The revision of AROs for regulated operations has no income statement impact due to the deferral of the adjustments through a regulatory asset. If revisions to these AROs are necessary, the impact on the Evergy Companies' operations or consolidated financial results could be material. Montrose Station CCRs In January 2025, two lawsuits, including one seeking class certification, were filed in the Circuit Court of Henry County, Missouri against Evergy Metro and two other defendants alleging unspecified damages resulting from the defendants' alleged unlawful and negligent spreading of coal combustion residuals associated with the Montrose Station coal ash landfill. Montrose Station was a coal-fired generating facility which was operated by Evergy Metro until its closure in 2018. The cases are at preliminary stages and Evergy and Evergy Metro are unable to assess the outcome or reasonably estimate any possible damages with respect to the claims. However, Evergy and Evergy Metro believe the claims are without merit and intend to vigorously defend themselves. Nuclear Insurance Nuclear liability, property and accidental outage insurance is maintained for Wolf Creek. These policies contain certain industry standard terms, conditions and exclusions, including, but not limited to, ordinary wear and tear and war. An industry aggregate limit of $3.2 billion for nuclear events ($1.8 billion of non-nuclear events) plus any reinsurance, indemnity or any other source recoverable by Nuclear Electric Insurance Limited (NEIL), provider of property and accidental outage insurance, exists for acts of terrorism affecting Wolf Creek or any other NEIL insured plant within 12 months from the date of the first act. In addition, participation is required in industry-wide retrospect assessment programs as discussed below. Nuclear Liability Insurance Pursuant to the Price-Anderson Act, liability insurance includes coverage against public nuclear liability claims resulting from nuclear incidents to the required limit of public liability, which is approximately $16.3 billion. This limit of liability consists of the maximum available commercial insurance of $0.5 billion and the remaining $15.8 billion is provided through mandatory participation in an industry-wide retrospective assessment program. Under this retrospective assessment program, the owners of Wolf Creek are jointly and severally subject to an assessment of up to $165.9 million (Evergy's share is $156.0 million and each of Evergy Kansas Central's and Evergy Metro's is $78.0 million), payable at no more than $24.7 million (Evergy's share is $23.2 million and each of Evergy Kansas Central's and Evergy Metro's is $11.6 million) per incident per year per reactor for any commercial U.S. nuclear reactor qualifying incident. Both the total and yearly assessment is subject to an inflationary adjustment based on the Consumer Price Index and applicable premium taxes. In addition, the U.S. Congress could impose additional revenue-raising measures to pay claims. Nuclear Property and Accidental Outage Insurance The owners of Wolf Creek carry decontamination liability, nuclear property damage and premature nuclear decommissioning liability insurance for Wolf Creek totaling approximately $2.8 billion. Insurance coverage for non-nuclear property damage accidents total approximately $1.0 billion. In the event of an extraordinary nuclear accident, insurance proceeds must first be used for reactor stabilization and site decontamination in accordance with a plan mandated by the NRC. The Evergy Companies' share of any remaining proceeds can be used to pay for property damage or, if certain requirements are met, including decommissioning the plant, toward a shortfall in the nuclear decommissioning trust. The owners also carry additional insurance with NEIL to help cover costs of replacement power and other extra expenses incurred during a prolonged outage resulting from accidental property damage at Wolf Creek. If significant losses were incurred at any of the nuclear plants insured under the current NEIL policies, the owners of Wolf Creek may be subject to retrospective assessments under the current policies of approximately $26.1 million (Evergy's share is $24.6 million and each of Evergy Kansas Central's and Evergy Metro's is $12.3 million). Nuclear Insurance Considerations Although the Evergy Companies maintain various insurance policies to provide coverage for potential losses and liabilities resulting from an accident or an extended outage, the insurance coverage may not be adequate to cover the costs that could result from a catastrophic accident or extended outage at Wolf Creek. Any substantial losses not covered by insurance, to the extent not recoverable in prices, would have a material effect on the Evergy Companies' consolidated financial results. Contractual Commitments - Fuel and Power The Evergy Companies' contractual commitments for fuel and power as of December 31, 2024 are detailed in the following tables. See Notes 9, 12 and 21 for information regarding pension, long-term debt and lease commitments, respectively. Evergy 2025 2026 2027 2028 2029 After 2029 Total Purchase commitments (millions) Fuel $ 247.3 $ 228.3 $ 120.7 $ 111.5 $ 109.6 $ 141.0 $ 958.4 Power 58.4 58.4 58.4 57.1 59.9 118.4 410.6 Total fuel and power commitments $ 305.7 $ 286.7 $ 179.1 $ 168.6 $ 169.5 $ 259.4 $ 1,369.0 Evergy Kansas Central 2025 2026 2027 2028 2029 After 2029 Total Purchase commitments (millions) Fuel $ 144.1 $ 132.2 $ 63.8 $ 59.0 $ 52.8 $ 70.6 $ 522.5 Power 0.9 0.9 0.9 0.9 0.9 0.4 4.9 Total fuel and power commitments $ 145.0 $ 133.1 $ 64.7 $ 59.9 $ 53.7 $ 71.0 $ 527.4 Evergy Metro 2025 2026 2027 2028 2029 After 2029 Total Purchase commitments (millions) Fuel $ 88.2 $ 83.6 $ 49.2 $ 50.5 $ 56.8 $ 70.4 $ 398.7 Power 29.2 29.2 29.2 29.2 29.2 79.4 225.4 Total fuel and power commitments $ 117.4 $ 112.8 $ 78.4 $ 79.7 $ 86.0 $ 149.8 $ 624.1

GUARANTEES

GUARANTEES	12 Months Ended
	Dec. 31, 2024
Guarantees [Abstract]
GUARANTEES	GUARANTEES In the ordinary course of business, Evergy and certain of its subsidiaries enter into various agreements providing financial or performance assurance to third parties on behalf of certain subsidiaries. Such agreements include, for example, guarantees and letters of credit. These agreements are entered into primarily to support or enhance the creditworthiness otherwise attributed to a subsidiary on a stand-alone basis, thereby facilitating the extension of sufficient credit to accomplish the subsidiary's intended business purposes. The majority of these agreements guarantee Evergy's own future performance, so a liability for the fair value of the obligation is not recorded. As of December 31, 2024, Evergy has provided $794.0 million of credit support for certain of its subsidiaries as follows: • Evergy direct guarantees to Evergy Kansas Central and Evergy Metro counterparties for certain fuel supply contracts totaling $48.0 million, which expire in 2027; and • Evergy's guarantee of Evergy Missouri West long-term debt totaling $746.0 million, which includes debt with maturity dates ranging from 2025 to 2043. None of the guaranteed obligations are subject to default or prepayment if Evergy Missouri West's credit ratings were downgraded.

RELATED PARTY TRANSACTIONS AND

RELATED PARTY TRANSACTIONS AND RELATIONSHIPS	12 Months Ended
	Dec. 31, 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 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. 2024 2023 2022 (millions) Evergy Kansas Central billings to Evergy Missouri West $ 29.6 $ 33.0 $ 32.7 Evergy Metro billings to Evergy Missouri West 111.3 124.6 140.5 Evergy Kansas Central billings to Evergy Metro 46.9 48.4 33.1 Evergy Metro billings to Evergy Kansas Central 144.6 132.9 238.4 Related Party Net Receivables and Payables The following table summarizes Evergy Kansas Central's and Evergy Metro's related party net receivables and payables. December 31 2024 2023 Evergy Kansas Central (millions) Net payable to Evergy $ (13.4) $ (274.5) Net payable to Evergy Metro (22.9) (19.6) Net receivable from Evergy Missouri West 23.0 11.3 Evergy Metro Net receivable from Evergy $ 16.8 $ 15.9 Net receivable from Evergy Kansas Central 22.9 19.6 Net receivable from Evergy Missouri West 86.2 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 December 31, 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. December 31 2024 2023 Evergy Kansas Central (millions) Income taxes receivable from Evergy $ 11.4 $ 11.5 Evergy Metro Income taxes payable to Evergy $ (10.0) $ (6.8)

SHAREHOLDERS' EQUITY

SHAREHOLDERS' EQUITY	12 Months Ended
	Dec. 31, 2024
Stockholders' Equity Note [Abstract]
SHAREHOLDERS' EQUITY	SHAREHOLDERS' EQUITY Evergy's authorized capital stock consists of 600 million shares of common stock, without par value, and 12 million shares of Preference Stock, without par value. Evergy Registration Statements In August 2024, Evergy filed an automatic shelf registration statement on Form S-3 with the SEC. Under this Form S-3, which is uncapped, Evergy may issue debt and other securities, including common stock, in the future with the amounts, prices and terms to be determined at the time of future offerings. The automatic registration statement was filed to replace a similar Form S-3 upon expiration of its three-year term. The shelf registration statement expires in August 2027. In March 2024, Evergy registered shares of its common stock with the SEC for its Dividend Reinvestment and Direct Stock Purchase Plan. Shares issued under the plan may be either newly issued shares or shares purchased on the open market. Evergy has registered shares of its common stock with the SEC for the Evergy, Inc. 401(k) Savings Plan. Shares issued under the plan may be either newly issued shares or shares purchased on the open market. Dividend Restrictions Evergy depends on its subsidiaries to pay dividends on its common stock. The Evergy Companies have certain restrictions stemming from statutory requirements, corporate organizational documents, covenants and other conditions that could affect dividend levels or the ability to pay dividends. The KCC order authorizing the merger transaction requires Evergy to maintain consolidated common equity of at least 35% of total consolidated capitalization. Under the Federal Power Act, Evergy Kansas Central, Evergy Metro and Evergy Missouri West generally can pay dividends only out of retained earnings. Certain conditions in the MPSC and KCC orders authorizing the merger transaction also require Evergy Kansas Central and Evergy Metro to maintain consolidated common equity of at least 40% of total capitalization. Other conditions in the MPSC and KCC merger orders require Evergy Kansas Central, Evergy Metro and Evergy Missouri West to maintain credit ratings of at least investment grade. If Evergy Kansas Central's, Evergy Metro's or Evergy Missouri West's credit ratings are downgraded below the investment grade level as a result of their affiliation with Evergy or any of Evergy's affiliates, the impacted utility shall not pay a dividend to Evergy without KCC or MPSC approval or until the impacted utility's investment grade credit rating has been restored. The master credit facility of Evergy, Evergy Kansas Central, Evergy Metro and Evergy Missouri West and the note purchase agreements for certain Evergy Missouri West senior notes contain covenants requiring the respective company to maintain a consolidated indebtedness to consolidated total capitalization ratio of not more than 0.65 to 1.00. The Evergy, Inc. Junior Subordinated Notes issued in December 2024 permit Evergy to defer the payment of interest under certain circumstances. Making such an election would restrict Evergy's ability to declare or pay dividends, among other restrictions. As of December 31, 2024, Evergy has not elected to defer the payment of interest under the terms of the Junior Subordinated Notes. See Note 12 for additional information regarding the Junior Subordinated Notes. As of December 31, 2024, Evergy's retained earnings and net income were free of restrictions, Evergy Kansas Central had a retained earnings restriction of $290.5 million and Evergy Metro had a retained earnings restriction of $464.9 million. As of December 31, 2024, Evergy's subsidiaries had restricted net assets of approximately $6.3 billion. These restrictions are not expected to affect the Evergy Companies' ability to pay dividends at the current level for the foreseeable future.

VARIABLE INTEREST ENTITIES

VARIABLE INTEREST ENTITIES	12 Months Ended
	Dec. 31, 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 December 31, 2024. There was no impact on Evergy's consolidated balance sheet as of December 31, 2023. December 31 2024 Evergy (millions) Current assets Regulatory assets $ 15.9 Other 5.4 Other assets Regulatory assets 294.5 Other 1.7 Current liabilities Current maturities of long-term debt 16.2 Accrued interest 1.3 Long-term liabilities Long-term debt, net 295.7 50% Interest in La Cygne Unit 2 Under an agreement that expires in September 2029, Evergy Kansas Central entered into a sale-leaseback transaction with a trust under which the trust purchased Evergy Kansas Central's 50% interest in La Cygne Unit 2 and subsequently leased it back to Evergy Kansas Central. The trust was financed with an equity contribution from an owner participant and debt issued by the trust. The trust was created specifically to purchase the 50% interest in La Cygne Unit 2 and lease it back to Evergy Kansas Central and does not hold any other assets. Evergy Kansas Central meets the requirements to be considered the primary beneficiary of the trust. In determining the primary beneficiary of the trust, Evergy Kansas Central concluded that the activities of the trust that most significantly impact its economic performance and that Evergy Kansas Central has the power to direct include (1) the operation and maintenance of the 50% interest in La Cygne Unit 2 and (2) Evergy Kansas Central's ability to exercise a purchase option at the end of the agreement at the lesser of fair value or a fixed amount. Evergy Kansas Central has the potential to receive benefits from the trust that could potentially be significant if the fair value of the 50% interest in La Cygne Unit 2 at the end of the agreement is greater than the fixed amount. As of December 31, 2024 and 2023, Evergy and Evergy Kansas Central recorded $126.5 million and $133.6 million, respectively, to property, plant and equipment, net, on their consolidated balance sheets related to the VIE described above. The assets of the VIE can be used only to settle obligations of the VIE and the VIE's debt holders have no recourse to the general credit of Evergy and Evergy Kansas Central. Evergy and Evergy Kansas Central have not provided financial or other support to the VIE and are not required to provide such support. Evergy and Evergy Kansas Central did not record any gain or loss upon the initial consolidation of the VIE.

TAXES

TAXES	12 Months Ended
	Dec. 31, 2024
Income Tax Disclosure [Abstract]
TAXES	TAXES Components of income tax expense are detailed in the following tables. Evergy 2024 2023 2022 Current income taxes (millions) Federal $ 30.9 $ 25.3 $ 31.9 State 7.7 6.9 8.3 Total 38.6 32.2 40.2 Deferred income taxes Federal 30.0 10.2 17.2 State (31.4) (21.7) (3.4) Total (1.4) (11.5) 13.8 Investment tax credit Deferral — 2.2 — Amortization (7.2) (7.3) (6.5) Total (7.2) (5.1) (6.5) Income tax expense $ 30.0 $ 15.6 $ 47.5 Evergy Kansas Central 2024 2023 2022 Current income taxes (millions) Federal $ 6.2 $ 27.8 $ 95.8 State 4.7 4.7 3.9 Total 10.9 32.5 99.7 Deferred income taxes Federal 16.4 (29.3) (78.7) State (11.3) (7.4) (4.6) Total 5.1 (36.7) (83.3) Investment tax credit Deferral — 2.2 — Amortization (3.8) (3.9) (4.1) Total (3.8) (1.7) (4.1) Income tax expense (benefit) $ 12.2 $ (5.9) $ 12.3 Evergy Metro 2024 2023 2022 Current income taxes (millions) Federal $ 37.7 $ 13.2 $ (21.9) State 3.6 3.7 4.1 Total 41.3 16.9 (17.8) Deferred income taxes Federal 15.8 33.6 69.9 State (13.0) (7.8) 0.6 Total 2.8 25.8 70.5 Investment tax credit amortization (3.2) (3.5) (2.4) Income tax expense $ 40.9 $ 39.2 $ 50.3 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 2024 2023 2022 Federal statutory income tax 21.0 % 21.0 % 21.0 % COLI policies (1.3) (1.9) (1.2) State income taxes (2.2) (1.9) 0.3 Flow through depreciation for plant-related differences (6.0) (8.0) (8.4) Federal tax credits (7.0) (6.2) (4.0) Non-controlling interest (0.3) (0.3) (0.3) AFUDC equity (0.4) (0.3) (0.6) Amortization of federal investment tax credits (0.6) (0.7) (0.6) Valuation allowance — 0.4 — Stock compensation — — (0.2) Officer compensation limitation 0.2 0.3 0.3 Other (0.1) (0.4) (0.5) Effective income tax rate 3.3 % 2.0 % 5.8 % Evergy Kansas Central 2024 2023 2022 Federal statutory income tax 21.0 % 21.0 % 21.0 % COLI policies (2.0) (3.6) (2.2) State income taxes (1.1) (1.0) (0.4) Flow through depreciation for plant-related differences (3.6) (5.0) (6.6) Federal tax credits (10.4) (11.7) (7.2) Non-controlling interest (0.4) (0.7) (0.6) AFUDC equity (0.5) (0.4) (0.4) Amortization of federal investment tax credits (0.4) (0.6) (0.5) Valuation allowance — 0.7 — Stock compensation — — (0.2) Officer compensation limitation — — 0.1 Other (0.5) (0.3) (0.2) Effective income tax rate 2.1 % (1.6) % 2.8 % Evergy Metro 2024 2023 2022 Federal statutory income tax 21.0 % 21.0 % 21.0 % COLI policies (0.1) (0.1) (0.1) State income taxes (2.0) (0.9) 0.9 Flow through depreciation for plant-related differences (5.6) (7.6) (7.2) Federal tax credits (1.0) (0.7) (0.1) AFUDC equity (0.4) (0.3) (0.7) Amortization of federal investment tax credits (0.9) (0.9) (0.6) Stock compensation 0.2 0.1 (0.2) Officer compensation limitation 0.4 0.5 0.5 Other (0.4) (0.5) (1.1) Effective income tax rate 11.2 % 10.6 % 12.4 % Deferred Income Taxes The tax effects of major temporary differences resulting in deferred income tax assets (liabilities) in the consolidated balance sheets is in the following table. December 31 2024 2023 Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Deferred tax assets: (millions) Tax credit carryforward $ 393.2 $ 296.5 $ 95.3 $ 288.9 $ 242.7 $ 43.6 Income taxes refundable to customers, net 308.2 160.5 115.7 289.4 149.1 103.6 Deferred employee benefit costs 98.4 42.4 61.6 101.5 52.1 58.2 Net operating loss carryforward 4.4 — — 22.5 — — Deferred state income taxes 132.2 95.7 32.8 141.0 99.2 36.2 Accrued liabilities 198.0 92.6 73.8 185.9 85.9 66.8 Other regulatory liabilities 92.4 62.8 8.0 132.0 86.4 17.1 Other 99.6 46.4 25.8 121.7 64.2 25.1 Total deferred tax assets before 1,326.4 796.9 413.0 1,282.9 779.6 350.6 Valuation allowances (6.9) (2.7) — (14.8) (2.7) — Total deferred tax assets, net 1,319.5 794.2 413.0 1,268.1 776.9 350.6 Deferred tax liabilities: Plant-related (2,844.9) (1,407.6) (1,030.5) (2,818.4) (1,397.1) (1,030.2) Deferred employee benefit costs (0.5) — — (11.1) (10.6) — ARO regulatory assets (177.2) (76.4) (68.4) (159.1) (67.2) (60.3) Acquisition premium (34.2) (34.2) — (37.4) (37.4) — Other regulatory assets (200.6) (31.3) (39.5) (231.3) (43.6) (34.1) Other (97.8) (50.3) (29.9) (108.7) (65.2) (23.2) Total deferred tax liabilities (3,355.2) (1,599.8) (1,168.3) (3,366.0) (1,621.1) (1,147.8) Net deferred income tax liabilities $ (2,035.7) $ (805.6) $ (755.3) $ (2,097.9) $ (844.2) $ (797.2) Tax Credit Carryforwards As of December 31, 2024 and 2023, Evergy had $388.3 million and $284.1 million, respectively, of federal general business income tax credit carryforwards. As of December 31, 2024 and 2023, Evergy Kansas Central had $291.6 million and $237.9 million, respectively, of federal general business income tax credit carryforwards. As of December 31, 2024 and 2023, Evergy Metro had $95.3 million and $43.6 million, respectively, of federal general business income tax credit carryforwards. The carryforwards for Evergy, Evergy Kansas Central and Evergy Metro relate primarily to PTCs and research and development tax credits and expire in the years 2025 to 2044. Approximately $0.1 million of Evergy's credits are related to Low Income Housing credits that were acquired in the acquisition of Evergy Missouri West. The Evergy Companies' federal general business income tax credit carryforwards include PTCs related to the generation of electricity from nuclear energy. As of December 31, 2024, Evergy, Evergy Kansas Central and Evergy Metro had $132.3 million, $65.1 million and $67.2 million, respectively, of nuclear energy PTCs. Beginning in 2024, nuclear units, including Wolf Creek, are eligible for a production tax credit through 2032. The credit is for $15.00 per MWh and is subject to a phase-out when gross receipts from the facility are between $25.00 per MWh and $43.75 per MWh. The credit may be used to offset Evergy's income tax liability or be transferred to an unrelated third party. The Evergy Companies have estimated the credit based on the existing Internal Revenue Service (IRS) regulations. The IRS is expected to provide guidance regarding the type of revenue to be included in the computation of gross receipts in 2025 and any changes would be reflected subsequently in the estimate. The Evergy Companies have recorded a regulatory liability for these tax credits as the benefits are expected to be returned to customers as a reduction to revenue in future regulatory proceedings. The year of origin of Evergy's, Evergy Kansas Central's and Evergy Metro's related tax benefit amounts for federal tax credit carryforwards as of December 31, 2024 are detailed in the following table. Amount of Benefit Year of Origin Evergy Evergy Kansas Central Evergy Metro (millions) 2007 $ 0.1 $ — $ — 2018 2.1 2.0 0.1 2019 37.7 30.8 6.7 2020 35.9 28.5 7.2 2021 31.7 28.1 3.5 2022 34.7 31.7 2.6 2023 49.8 45.3 4.3 2024 196.3 125.2 70.9 $ 388.3 $ 291.6 $ 95.3 As of December 31, 2024 and 2023, Evergy had $4.9 million and $4.8 million of tax benefits, respectively, related to state income tax credit carryforwards. As of December 31, 2024 and 2023, Evergy Kansas Central had $4.9 million and $4.8 million of tax benefits, respectively, related to state income tax credit carryforwards. The state income tax credits relate primarily to the Kansas high performance incentive program tax credits and expire in the years 2038 to 2039. Due to the elimination of the Kansas corporate income tax for utilities, Evergy and Evergy Kansas Central expect a portion of these state NOL carryforwards to expire unutilized and have provided a valuation allowance against $2.7 million of the state tax benefits. Net Operating Loss Carryforwards As of December 31, 2023, Evergy had $17.2 million of tax benefits related to federal net operating loss (NOL) carryforwards. Any unutilized federal NOL carryforwards expired in 2024. In addition, Evergy also had deferred tax benefits of $4.4 million and $5.3 million related to state NOLs as of December 31, 2024 and 2023, respectively. The state NOL carryforwards expire in years 2025 to 2042. Evergy does not expect to utilize $4.2 million of NOLs before the expiration date of the carryforwards of NOLs in certain states. Therefore, a valuation allowance has been provided against $4.2 million of state tax benefits. Valuation Allowances Evergy is required to assess the ultimate realization of deferred tax assets using a "more likely than not" assessment threshold. This assessment takes into consideration tax planning strategies within Evergy's control. As a result of this assessment, Evergy has established a partial valuation allowance for state tax NOL carryforwards and tax credit carryforwards. During 2024, $7.9 million of tax benefits was recorded in continuing operations primarily related to federal and state NOLs that expired. The tax benefits were offset by the reduction in related deferred tax assets. Uncertain Tax Positions

LEASES

LEASES	12 Months Ended
	Dec. 31, 2024
Leases [Abstract]
LEASES	LEASES The Evergy Companies lease office buildings, computer equipment, vehicles, rail cars, generating plant and other property and equipment, including rail cars to serve jointly-owned generating units where Evergy Kansas Central or Evergy Metro is the managing partner and is reimbursed by other joint-owners for the other owners' proportionate share of the costs. Under GAAP, a contract is or contains a lease if the contract conveys the right to control the use of identified property, plant or equipment for a period of time in exchange for consideration. The Evergy Companies assess a contract as being or containing a lease if the contract identifies property, plant and equipment, provides the lessee the right to obtain substantially all of the economic benefits from use of the property, plant and equipment and provides the lessee the right to direct the use of the property, plant and equipment. The Evergy Companies have entered into several agreements to purchase energy through renewable purchase power agreements that are accounted for as leases that commenced prior to the application of Topic 842-Leases . Due to the intermittent nature of renewable generation, these leases have significant variable lease payments not included in the initial and subsequent measurement of the lease liability. Variable lease payments are expensed as incurred. In addition, certain other contracts contain payment for activity that transfers a separate good or service such as utilities or common area maintenance. The Evergy Companies have elected a practical expedient permitted by GAAP to not separate such components of the lease from other lease components for all leases. The Evergy, Evergy Kansas Central and Evergy Metro leases have remaining terms ranging from 1 to 14 years, 1 to 14 years and 1 to 9 years, respectively. Leases that have original lease terms of twelve months or less are not recognized on the Evergy Companies’ balance sheets. Some leases have options to renew the lease or terminate early at the election of the Evergy Companies. Judgment is applied at lease commencement to determine the reasonably certain lease term based on then-current assumptions about use of the leased asset, market conditions and terms in the contract. The judgment applied to determine the lease term can significantly impact the measurement of the lease liability and right-of-use asset and lease classification. The Evergy Companies typically discount lease payments over the term of the lease using their incremental borrowing rates at lease commencement to measure its initial and subsequent lease liability. For leases that existed at the initial application of Topic 842, the Evergy Companies used the incremental borrowing rates that corresponded to the remaining lease term as of January 1, 2019. Leases may be classified as either operating leases or finance leases. The lease classification is based on assumptions of the lease term and discount rate, as discussed above, and the fair market value and economic life of the leased asset. Operating leases recognize a consistent expense each period over the lease term, while finance leases will result in the separate presentation of interest expense on the lease liability and amortization of the right-of-use asset. Finance leases are treated as operating leases for rate-making purposes and as such, the Evergy Companies defer to a regulatory asset or liability any material differences between expense recognition and the timing of payments in order to match what is being recovered in customer rates. The Evergy Companies' lease expense is detailed in the following tables. Evergy 2024 2023 2022 Finance lease costs (millions) Amortization of right-of-use assets $ 11.1 $ 6.1 $ 5.3 Interest on lease liabilities 2.5 2.3 2.4 Operating lease costs 24.0 20.5 21.9 Short-term lease costs 3.5 4.0 4.9 Variable lease costs for renewable purchase power agreements 210.3 266.5 318.0 Total lease costs $ 251.4 $ 299.4 $ 352.5 Evergy Kansas Central 2024 2023 2022 Finance lease costs (millions) Amortization of right-of-use assets $ 8.3 $ 5.5 $ 4.7 Interest on lease liabilities 2.2 2.2 2.2 Operating lease costs 12.3 10.0 12.1 Short-term lease costs 1.2 1.5 1.4 Variable lease costs for renewable purchase power agreements 71.0 122.6 155.2 Total lease costs $ 95.0 $ 141.8 $ 175.6 Evergy Metro 2024 2023 2022 Finance lease costs (millions) Amortization of right-of-use assets $ 2.3 $ 0.5 $ 0.5 Interest on lease liabilities 0.2 0.1 0.1 Operating lease costs 9.5 8.6 8.7 Short-term lease costs 1.9 2.2 3.3 Variable lease costs for renewable purchase power agreements 103.9 107.5 122.6 Total lease costs $ 117.8 $ 118.9 $ 135.2 Supplemental cash flow information related to the Evergy Companies' leases is detailed in the following tables. Evergy 2024 2023 2022 Cash paid for amounts included in the measurement of lease liabilities: (millions) Operating cash flows from operating leases $ 24.9 $ 20.1 $ 21.1 Operating cash flows from finance leases 2.5 2.3 2.4 Financing cash flows from finance leases 11.7 6.6 5.9 Right-of-use assets obtained in exchange for new finance lease liabilities 17.0 11.9 7.0 Right-of-use assets obtained in exchange for new operating lease liabilities 7.2 20.1 12.2 Evergy Kansas Central 2024 2023 2022 Cash paid for amounts included in the measurement of lease liabilities: (millions) Operating cash flows from operating leases $ 12.3 $ 9.9 $ 11.4 Operating cash flows from finance leases 2.2 2.1 2.2 Financing cash flows from finance leases 8.7 5.7 5.1 Right-of-use assets obtained in exchange for new finance lease liabilities 13.2 10.2 7.0 Right-of-use assets obtained in exchange for new operating lease liabilities 5.2 9.2 12.0 Evergy Metro 2024 2023 2022 Cash paid for amounts included in the measurement of lease liabilities: (millions) Operating cash flows from operating leases $ 11.7 $ 9.7 $ 9.3 Operating cash flows from finance leases 0.2 0.1 0.1 Financing cash flows from finance leases 2.5 0.8 0.7 Right-of-use assets obtained in exchange for new finance lease liabilities 2.6 1.7 — Right-of-use assets obtained in exchange for new operating lease liabilities 1.9 9.9 0.2 Other pertinent information related to the Evergy Companies' leases is detailed in the following tables. Evergy 2024 2023 (dollars in millions) Right-of-use assets under finance leases included in property, plant and equipment, net, on the consolidated balance sheets $ 356.9 $ 323.7 Right-of-use assets under operating leases included in other assets on the consolidated balance sheets 58.3 71.1 Weighted-average remaining lease term (years) Finance leases 8.3 11.0 Operating leases 5.4 5.9 Weighted average discount rate Finance leases 5.3 % 5.5 % Operating leases 4.4 % 3.2 % Evergy Kansas Central 2024 2023 (dollars in millions) Right-of-use assets under finance leases included in property, plant and equipment, net, on the consolidated balance sheets $ 84.5 $ 63.5 Right-of-use assets under operating leases included in other assets on the consolidated balance sheets 17.4 22.8 Weighted-average remaining lease term (years) Finance leases 9.1 11.4 Operating leases 2.7 3.3 Weighted average discount rate Finance leases 5.3 % 5.6 % Operating leases 3.8 % 4.1 % Evergy Metro 2024 2023 (dollars in millions) Right-of-use assets under finance leases included in property, plant and equipment, net, on the consolidated balance sheets $ 13.0 $ 2.9 Right-of-use assets under operating leases included in other assets on the consolidated balance sheets 29.3 35.5 Weighted-average remaining lease term (years) Finance leases 5.3 6.0 Operating leases 6.6 7.2 Weighted average discount rate Finance leases 5.2 % 5.8 % Operating leases 5.0 % 2.5 % Finance Leases Right-of-use assets for finance leases are included in property, plant and equipment on the Evergy Companies' balance sheets. Lease liabilities for finance leases are included in other current and other long-term liabilities. Payments and other supplemental information for finance leases as of December 31, 2024, are detailed in the following table. Evergy Evergy Kansas Central Evergy Metro (millions) 2025 $ 16.4 $ 12.5 $ 2.9 2026 15.6 11.8 2.8 2027 15.2 11.4 2.8 2028 14.2 10.8 2.6 2029 10.3 8.4 1.4 After 2029 37.1 34.8 1.8 Total finance lease payments 108.8 89.7 14.3 Amounts representing imputed interest (20.5) (18.9) (1.3) Present value of lease payments 88.3 70.8 13.0 Less: current portion (13.3) (9.8) (2.6) Total long-term obligations under finance leases $ 75.0 $ 61.0 $ 10.4 Operating Leases Right-of-use assets for operating leases are included in other long-term assets on the Evergy Companies' balance sheets. Lease liabilities for operating leases are included in other current and other long-term liabilities. Lease payments and other supplemental information for operating leases as of December 31, 2024, are detailed in the following table. Evergy Evergy Kansas Central Evergy Metro (millions) 2025 $ 18.3 $ 8.9 $ 9.1 2026 13.7 5.8 7.5 2027 11.1 4.3 6.5 2028 8.0 2.4 5.4 2029 5.2 0.3 4.9 After 2029 13.3 — 13.3 Total operating lease payments 69.6 21.7 46.7 Amounts representing imputed interest (11.9) (4.6) (7.1) Present value of lease payments 57.7 17.1 39.6 Less: current portion (14.6) (6.9) (7.4) Total long-term obligations under operating leases $ 43.1 $ 10.2 $ 32.2
LEASES	LEASES The Evergy Companies lease office buildings, computer equipment, vehicles, rail cars, generating plant and other property and equipment, including rail cars to serve jointly-owned generating units where Evergy Kansas Central or Evergy Metro is the managing partner and is reimbursed by other joint-owners for the other owners' proportionate share of the costs. Under GAAP, a contract is or contains a lease if the contract conveys the right to control the use of identified property, plant or equipment for a period of time in exchange for consideration. The Evergy Companies assess a contract as being or containing a lease if the contract identifies property, plant and equipment, provides the lessee the right to obtain substantially all of the economic benefits from use of the property, plant and equipment and provides the lessee the right to direct the use of the property, plant and equipment. The Evergy Companies have entered into several agreements to purchase energy through renewable purchase power agreements that are accounted for as leases that commenced prior to the application of Topic 842-Leases . Due to the intermittent nature of renewable generation, these leases have significant variable lease payments not included in the initial and subsequent measurement of the lease liability. Variable lease payments are expensed as incurred. In addition, certain other contracts contain payment for activity that transfers a separate good or service such as utilities or common area maintenance. The Evergy Companies have elected a practical expedient permitted by GAAP to not separate such components of the lease from other lease components for all leases. The Evergy, Evergy Kansas Central and Evergy Metro leases have remaining terms ranging from 1 to 14 years, 1 to 14 years and 1 to 9 years, respectively. Leases that have original lease terms of twelve months or less are not recognized on the Evergy Companies’ balance sheets. Some leases have options to renew the lease or terminate early at the election of the Evergy Companies. Judgment is applied at lease commencement to determine the reasonably certain lease term based on then-current assumptions about use of the leased asset, market conditions and terms in the contract. The judgment applied to determine the lease term can significantly impact the measurement of the lease liability and right-of-use asset and lease classification. The Evergy Companies typically discount lease payments over the term of the lease using their incremental borrowing rates at lease commencement to measure its initial and subsequent lease liability. For leases that existed at the initial application of Topic 842, the Evergy Companies used the incremental borrowing rates that corresponded to the remaining lease term as of January 1, 2019. Leases may be classified as either operating leases or finance leases. The lease classification is based on assumptions of the lease term and discount rate, as discussed above, and the fair market value and economic life of the leased asset. Operating leases recognize a consistent expense each period over the lease term, while finance leases will result in the separate presentation of interest expense on the lease liability and amortization of the right-of-use asset. Finance leases are treated as operating leases for rate-making purposes and as such, the Evergy Companies defer to a regulatory asset or liability any material differences between expense recognition and the timing of payments in order to match what is being recovered in customer rates. The Evergy Companies' lease expense is detailed in the following tables. Evergy 2024 2023 2022 Finance lease costs (millions) Amortization of right-of-use assets $ 11.1 $ 6.1 $ 5.3 Interest on lease liabilities 2.5 2.3 2.4 Operating lease costs 24.0 20.5 21.9 Short-term lease costs 3.5 4.0 4.9 Variable lease costs for renewable purchase power agreements 210.3 266.5 318.0 Total lease costs $ 251.4 $ 299.4 $ 352.5 Evergy Kansas Central 2024 2023 2022 Finance lease costs (millions) Amortization of right-of-use assets $ 8.3 $ 5.5 $ 4.7 Interest on lease liabilities 2.2 2.2 2.2 Operating lease costs 12.3 10.0 12.1 Short-term lease costs 1.2 1.5 1.4 Variable lease costs for renewable purchase power agreements 71.0 122.6 155.2 Total lease costs $ 95.0 $ 141.8 $ 175.6 Evergy Metro 2024 2023 2022 Finance lease costs (millions) Amortization of right-of-use assets $ 2.3 $ 0.5 $ 0.5 Interest on lease liabilities 0.2 0.1 0.1 Operating lease costs 9.5 8.6 8.7 Short-term lease costs 1.9 2.2 3.3 Variable lease costs for renewable purchase power agreements 103.9 107.5 122.6 Total lease costs $ 117.8 $ 118.9 $ 135.2 Supplemental cash flow information related to the Evergy Companies' leases is detailed in the following tables. Evergy 2024 2023 2022 Cash paid for amounts included in the measurement of lease liabilities: (millions) Operating cash flows from operating leases $ 24.9 $ 20.1 $ 21.1 Operating cash flows from finance leases 2.5 2.3 2.4 Financing cash flows from finance leases 11.7 6.6 5.9 Right-of-use assets obtained in exchange for new finance lease liabilities 17.0 11.9 7.0 Right-of-use assets obtained in exchange for new operating lease liabilities 7.2 20.1 12.2 Evergy Kansas Central 2024 2023 2022 Cash paid for amounts included in the measurement of lease liabilities: (millions) Operating cash flows from operating leases $ 12.3 $ 9.9 $ 11.4 Operating cash flows from finance leases 2.2 2.1 2.2 Financing cash flows from finance leases 8.7 5.7 5.1 Right-of-use assets obtained in exchange for new finance lease liabilities 13.2 10.2 7.0 Right-of-use assets obtained in exchange for new operating lease liabilities 5.2 9.2 12.0 Evergy Metro 2024 2023 2022 Cash paid for amounts included in the measurement of lease liabilities: (millions) Operating cash flows from operating leases $ 11.7 $ 9.7 $ 9.3 Operating cash flows from finance leases 0.2 0.1 0.1 Financing cash flows from finance leases 2.5 0.8 0.7 Right-of-use assets obtained in exchange for new finance lease liabilities 2.6 1.7 — Right-of-use assets obtained in exchange for new operating lease liabilities 1.9 9.9 0.2 Other pertinent information related to the Evergy Companies' leases is detailed in the following tables. Evergy 2024 2023 (dollars in millions) Right-of-use assets under finance leases included in property, plant and equipment, net, on the consolidated balance sheets $ 356.9 $ 323.7 Right-of-use assets under operating leases included in other assets on the consolidated balance sheets 58.3 71.1 Weighted-average remaining lease term (years) Finance leases 8.3 11.0 Operating leases 5.4 5.9 Weighted average discount rate Finance leases 5.3 % 5.5 % Operating leases 4.4 % 3.2 % Evergy Kansas Central 2024 2023 (dollars in millions) Right-of-use assets under finance leases included in property, plant and equipment, net, on the consolidated balance sheets $ 84.5 $ 63.5 Right-of-use assets under operating leases included in other assets on the consolidated balance sheets 17.4 22.8 Weighted-average remaining lease term (years) Finance leases 9.1 11.4 Operating leases 2.7 3.3 Weighted average discount rate Finance leases 5.3 % 5.6 % Operating leases 3.8 % 4.1 % Evergy Metro 2024 2023 (dollars in millions) Right-of-use assets under finance leases included in property, plant and equipment, net, on the consolidated balance sheets $ 13.0 $ 2.9 Right-of-use assets under operating leases included in other assets on the consolidated balance sheets 29.3 35.5 Weighted-average remaining lease term (years) Finance leases 5.3 6.0 Operating leases 6.6 7.2 Weighted average discount rate Finance leases 5.2 % 5.8 % Operating leases 5.0 % 2.5 % Finance Leases Right-of-use assets for finance leases are included in property, plant and equipment on the Evergy Companies' balance sheets. Lease liabilities for finance leases are included in other current and other long-term liabilities. Payments and other supplemental information for finance leases as of December 31, 2024, are detailed in the following table. Evergy Evergy Kansas Central Evergy Metro (millions) 2025 $ 16.4 $ 12.5 $ 2.9 2026 15.6 11.8 2.8 2027 15.2 11.4 2.8 2028 14.2 10.8 2.6 2029 10.3 8.4 1.4 After 2029 37.1 34.8 1.8 Total finance lease payments 108.8 89.7 14.3 Amounts representing imputed interest (20.5) (18.9) (1.3) Present value of lease payments 88.3 70.8 13.0 Less: current portion (13.3) (9.8) (2.6) Total long-term obligations under finance leases $ 75.0 $ 61.0 $ 10.4 Operating Leases Right-of-use assets for operating leases are included in other long-term assets on the Evergy Companies' balance sheets. Lease liabilities for operating leases are included in other current and other long-term liabilities. Lease payments and other supplemental information for operating leases as of December 31, 2024, are detailed in the following table. Evergy Evergy Kansas Central Evergy Metro (millions) 2025 $ 18.3 $ 8.9 $ 9.1 2026 13.7 5.8 7.5 2027 11.1 4.3 6.5 2028 8.0 2.4 5.4 2029 5.2 0.3 4.9 After 2029 13.3 — 13.3 Total operating lease payments 69.6 21.7 46.7 Amounts representing imputed interest (11.9) (4.6) (7.1) Present value of lease payments 57.7 17.1 39.6 Less: current portion (14.6) (6.9) (7.4) Total long-term obligations under operating leases $ 43.1 $ 10.2 $ 32.2

Segments and Related Informatio

Segments and Related Information	12 Months Ended
	Dec. 31, 2024
Segment Reporting [Abstract]
Segments and Related Information	SEGMENT INFORMATION Evergy's chief operating decision maker is Evergy's President and Chief Executive Officer. The chief operating decision maker assesses Evergy's performance based on consolidated net income attributable to Evergy, Inc. (i.e., Evergy operates in a single reportable segment) and uses consolidated net income attributable to Evergy, Inc. to make resource allocation decisions and to compare actual results to budget. The measures of segment assets and expenditures for additions to long-lived assets are reported as total assets on the consolidated balance sheet and additions to property, plant and equipment on the consolidated statement of cash flows, respectively. See Note 1 for additional information regarding the operations of Evergy. This segment information is detailed in the following table. 2024 2023 2022 (millions) OPERATING REVENUES $ 5,847.3 $ 5,508.2 $ 5,859.1 Less: Fuel and purchased power 1,479.9 1,494.8 1,821.2 SPP network transmission costs 370.9 302.6 323.0 Operating and maintenance: Operations and customer 616.3 594.8 656.9 Support 143.6 133.5 143.2 Other segment items, including benefit costs (a) 202.0 217.0 285.2 Depreciation and amortization 1,114.0 1,076.5 929.4 Taxes other than income tax 452.6 406.6 398.1 Sibley Unit 3 impairment loss and other regulatory disallowances — — 34.9 Interest expense 563.1 525.8 404.0 Income tax expense 30.0 15.6 47.5 Net income attributable to noncontrolling interests 12.3 12.3 12.3 Plus: Total other income (expense), net 3.1 (4.8) (58.0) Equity in earnings of equity method investees, net of income taxes 7.8 7.4 7.3 NET INCOME ATTRIBUTABLE TO EVERGY, INC. $ 873.5 $ 731.3 $ 752.7 (a) Other segment items include benefits expense associated with Operations, Customer and Support employees, regulatory amortization expense, expense associated with energy efficiency programs and bad debt expense, among other items.

Schedule I Financial Statements

Schedule I Financial Statements of Parent Company	12 Months Ended
	Dec. 31, 2024
Condensed Financial Information Disclosure [Abstract]
Condensed Financial Information of Parent Company Only Disclosure	EVERGY, INC. Statements of Comprehensive Income of Parent Company 2024 2023 2022 OPERATING EXPENSES: (millions) Operating and maintenance $ 12.0 $ 6.2 $ 11.5 Total Operating Expenses 12.0 6.2 11.5 INCOME FROM OPERATIONS (12.0) (6.2) (11.5) OTHER INCOME (EXPENSE) Equity in earnings from subsidiaries 965.8 804.7 816.1 Investment earnings 16.7 0.5 7.1 Other expense — (0.1) (8.3) Total Other Income, Net 982.5 805.1 814.9 Interest expense 124.8 91.6 73.9 INCOME BEFORE INCOME TAXES 845.7 707.3 729.5 Income tax benefit (25.9) (22.1) (19.1) NET INCOME $ 871.6 $ 729.4 $ 748.6 COMPREHENSIVE INCOME NET INCOME $ 871.6 $ 729.4 $ 748.6 OTHER COMPREHENSIVE INCOME Derivative hedging activity Reclassification to expenses, net of taxes 5.4 5.4 5.5 Derivative hedging activity, net of tax 5.4 5.4 5.5 Other comprehensive income (loss) from subsidiaries, net 0.4 (0.5) 4.0 Total other comprehensive income 5.8 4.9 9.5 COMPREHENSIVE INCOME $ 877.4 $ 734.3 $ 758.1 The accompanying Notes to Financial Statements of Parent Company are an integral part of these statements. EVERGY, INC. Balance Sheets of Parent Company December 31 2024 2023 ASSETS (millions, except share amounts) CURRENT ASSETS: Cash and cash equivalents $ 0.1 $ — Accounts receivable from subsidiaries 58.4 58.5 Notes receivable from subsidiaries 0.6 604.6 Income taxes receivable 15.5 11.2 Prepaid expenses and other assets 3.0 0.7 Total Current Assets 77.6 675.0 OTHER ASSETS: Investment in subsidiaries 12,523.4 11,867.1 Deferred income taxes 13.3 15.8 Other 1.6 1.7 Total Other Assets 12,538.3 11,884.6 TOTAL ASSETS $ 12,615.9 $ 12,559.6 LIABILITIES AND EQUITY CURRENT LIABILITIES: Current maturities of long-term debt $ — $ 800.0 Commercial paper 75.4 — Accounts payable to subsidiaries 30.8 30.8 Accrued interest 12.0 16.7 Other 6.0 6.8 Total Current Liabilities 124.2 854.3 LONG-TERM LIABILITIES: Long-term debt, net 2,674.1 2,173.6 Other 9.8 13.9 Total Long-Term Liabilities 2,683.9 2,187.5 Commitments and Contingencies (Note 15) EQUITY: Evergy, Inc. Shareholders' Equity: Common stock - 600,000,000 shares authorized, without par value, 229,983,615 and 229,729,296 shares issued 7,229.1 7,218.1 Retained earnings 2,602.5 2,329.3 Accumulated other comprehensive loss (23.8) (29.6) Total Shareholders' Equity 9,807.8 9,517.8 TOTAL LIABILITIES AND EQUITY $ 12,615.9 12,559.6 The accompanying Notes to Financial Statements of Parent Company are an integral part of these statements. EVERGY, INC. Statements of Cash Flows of Parent Company 2024 2023 2022 CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES: (millions) Net income $ 871.6 $ 729.4 $ 748.6 Adjustments to reconcile income to net cash from operating activities: Non-cash compensation 15.3 17.7 18.8 Net deferred income taxes and credits (0.1) 1.1 (1.0) Equity in earnings from subsidiaries (965.8) (804.7) (816.1) Other 7.0 7.0 7.1 Changes in working capital items: Accounts receivable from subsidiaries 0.1 (14.2) 7.2 Income taxes receivable (4.3) (5.3) 9.0 Prepaid expenses and other current assets (2.3) 1.5 — Accounts payable to subsidiaries — 11.0 (2.5) Accrued interest (4.7) 4.1 0.2 Other current liabilities (0.3) (1.9) (0.8) Cash dividends from subsidiaries 313.0 325.0 645.0 Changes in other assets 0.1 (0.8) 0.3 Changes in other liabilities 3.7 (2.9) 5.5 Cash Flows from Operating Activities 233.3 267.0 621.3 CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES: Repayment of intercompany note — 1.4 287.5 Net money pool lending 604.0 (574.5) (29.5) Equity contribution (3.1) — (200.0) Cash Flows from Investing Activities 600.9 (573.1) 58.0 CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES: Short term debt, net 75.4 (0.5) (358.0) Proceeds from term loan facility — — 500.0 Repayment of term loan facility — (500.0) — Proceeds from long-term debt 493.3 1,379.1 — Retirements of long-term debt (800.0) — (287.5) Cash dividends paid (596.7) (569.6) (534.8) Other financing activities (6.1) (3.3) (6.1) Cash Flows used in Financing Activities (834.1) 305.7 (686.4) NET CHANGE IN CASH AND CASH EQUIVALENTS 0.1 (0.4) (7.1) CASH AND CASH EQUIVALENTS: Beginning of period — 0.4 7.5 End of period $ 0.1 $ — $ 0.4 The accompanying Notes to Financial Statements of Parent Company are an integral part of these statements. 1. ORGANIZATION AND BASIS OF PRESENTATION The Evergy, Inc. Parent Company Financial Statements have been prepared to comply with Rule 12-04 of Regulation S-X. Evergy, Inc. is a public holding company incorporated in 2017 and headquartered in Kansas City, Missouri. Evergy, Inc. 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, Inc.'s investments in subsidiaries are accounted for using the equity method. Fair value adjustments and goodwill related to acquired assets and liabilities from the merger that created Evergy, Inc. are only reflected on Evergy's consolidated financial statements and as such, are not included in Evergy, Inc.'s Parent Company Financial Statements. See Note 1 to the consolidated financial statement for additional information. 2. LONG-TERM DEBT See Note 12 to the consolidated financial statements for additional information on Evergy, Inc.'s long-term debt. 3. GUARANTEES See Note 16 to the consolidated financial statements for additional information regarding Evergy, Inc.'s guarantees. 4. DIVIDENDS Cash dividends paid to Evergy, Inc. by its subsidiaries were $313.0 million for the year ended December 31, 2024, $325.0 million for the year ended December 31, 2023 and $645.0 million for the year ended December 31, 2022. See Note 18 to the consolidated financial statements for information regarding the dividend restrictions of Evergy, Inc. and its subsidiaries.

Schedule II Valuation and Quali

Schedule II Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2024
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Schedule II Valuation and Qualifying Accounts	Evergy, Inc. Valuation and Qualifying Accounts Years Ended December 31, 2024, 2023 and 2022 Additions Charged Balance At To Costs Charged Balance Beginning And To Other At End Description Of Period Expenses Accounts Deductions Of Period Year Ended December 31, 2024 (millions) Allowance for uncollectible accounts $ 24.2 $ 11.7 $ 12.3 (a) $ 32.5 (b) $ 15.7 Tax valuation allowance 14.8 0.6 — 8.5 (c) 6.9 Year Ended December 31, 2023 Allowance for uncollectible accounts $ 31.4 $ 15.4 $ 10.7 (a) $ 33.3 (b) $ 24.2 Tax valuation allowance 12.8 3.5 — 1.5 (c) 14.8 Year Ended December 31, 2022 Allowance for uncollectible accounts $ 32.9 $ 16.1 $ 11.2 (a) $ 28.8 (b) $ 31.4 Tax valuation allowance 12.8 0.1 — 0.1 (c) 12.8 (a) Recoveries. (b) Uncollectible accounts charged off. (c) Reversal of tax valuation allowance. Evergy Kansas Central, Inc. Valuation and Qualifying Accounts Years Ended December 31, 2024, 2023 and 2022 Additions Charged Balance At To Costs Charged Balance Beginning And To Other At End Description Of Period Expenses Accounts Deductions Of Period Year Ended December 31, 2024 (millions) Allowance for uncollectible accounts $ 11.6 $ 6.6 $ 5.2 (a) $ 15.6 (b) $ 7.8 Tax valuation allowance 2.7 — — — 2.7 Year Ended December 31, 2023 Allowance for uncollectible accounts $ 16.9 $ 7.7 $ 4.7 (a) $ 17.7 (b) $ 11.6 Tax valuation allowance — 2.7 — — 2.7 Year Ended December 31, 2022 Allowance for uncollectible accounts $ 13.0 $ 13.1 $ 4.5 (a) $ 13.7 (b) $ 16.9 (a) Recoveries. (b) Uncollectible accounts charged off. Evergy Metro, Inc. Valuation and Qualifying Accounts Years Ended December 31, 2024, 2023 and 2022 Additions Charged Balance At To Costs Charged Balance Beginning And To Other At End Description Of Period Expenses Accounts Deductions Of Period Year Ended December 31, 2024 (millions) Allowance for uncollectible accounts $ 7.9 $ 4.5 $ 5.0 (a) $ 11.6 (b) $ 5.8 Year Ended December 31, 2023 Allowance for uncollectible accounts $ 9.3 $ 5.0 $ 4.1 (a) $ 10.5 (b) $ 7.9 Year Ended December 31, 2022 Allowance for uncollectible accounts $ 13.3 $ 1.7 $ 4.5 (a) $ 10.2 (b) $ 9.3 (a) Recoveries. (b) Uncollectible accounts charged off.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pay vs Performance Disclosure
Net income attributable to Evergy, Inc.	$ 873.5	$ 731.3	$ 752.7

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Dec. 31, 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

Cybersecurity Risk Management a

Cybersecurity Risk Management and Strategy Disclosure	12 Months Ended
	Dec. 31, 2024
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	The Evergy Companies' risk mitigation function utilizes the National Institute of Standards and Technology Cybersecurity Framework (NIST CSF), the United States Department of Energy Cyber Capability Maturity Model (C2M2) standard and components of National Institute of Standards and Technology Risk Management Framework (NIST RMF) for a comprehensive, flexible and risk-based approach to managing risk from cybersecurity threats that integrates, security, privacy and cyber supply chain risk management activities. The NIST RMF considers effectiveness, efficiency and constraints due to applicable laws and regulations. The Evergy Companies' cybersecurity organization uses the NIST CSF to model the security program. The Evergy Companies have implemented a layered defense model to protect against cyber intrusions and attacks. One layer of defense is Evergy's employees and their abilities to detect and respond to phishing attempts. Evergy conducts annual security awareness training and monthly phishing simulations. Employees that perform poorly in the phishing simulations are subject to additional training and disciplinary action. Other defense layers include firewalls at both the network and application layers, network segmentation, email scanning, multi-factor authentications, cloud security monitoring, in addition to other defensive layers. Several of the Evergy Companies' security tools employ AI and machine learning to enhance their respective capabilities. The Evergy Companies employ security practitioners with cybersecurity and information technology degrees and certifications and with extensive experience, with several holding federal government clearances. The Evergy Companies have a 24-hour Security Operations Center that monitors for security events and the Evergy Companies frequently engage with multiple third parties to analyze network traffic. Further, the Evergy Companies regularly and as needed engage cybersecurity consultants and third parties to assist with the identification, assessment and mitigation of cybersecurity risks and assessment of the Evergy Companies' risk mitigation practices. These services include, but are not limited to, the identification of vulnerabilities, penetration testing and assessment of the cybersecurity program to both validate effectiveness and also identify any areas for improvement. In addition, the Evergy Companies review many third parties with whom the Evergy Companies do business to understand and evaluate potential cybersecurity risks of engaging the third party and work with the third party to appropriately mitigate identified risks, as needed. Among other measures, certain third parties are required to have processes in place to mitigate risk that data would be compromised, to become aware of cybersecurity incidents and/or to promptly notify the Evergy Companies of any cybersecurity incidents. Generally, the Evergy Companies retain the right to perform an assessment, audit, examination or review of all controls in the third parties' environment to monitor compliance with applicable cybersecurity agreements. The Evergy Companies may decide not to move forward with a third party that does not meet security requirements. While the Evergy Companies have a cybersecurity program designed to protect and preserve the integrity of their information systems, the Evergy Companies also maintain cybersecurity insurance to manage financial statement risk resulting from specific cyber-attacks. Although the Evergy Companies maintain cybersecurity insurance, there can be no guarantee that the Evergy Companies' insurance coverage limits will protect against any future claims or that such insurance proceeds will be paid in a timely manner. The Evergy Companies have been subjected to attempted cyber-attacks from time to time, and will likely continue to be subject to such attempted attacks, but these prior attacks have not had a material impact on the Evergy Companies' operations or financial results to date. However, because technology is increasingly complex and cyber-attacks are increasingly sophisticated and more frequent through the use of such tools as AI, there can be no assurance that such incidents will not have a material adverse effect on the Evergy Companies in the future. See Item 1A. Risk Factors – Operational Risks for additional information.
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	The Evergy Companies utilize an enterprise risk management framework to identify, evaluate and minimize risks. Risk management personnel meet annually with subject matter experts and each board member to identify and assess enterprise risk and also confer with each board member about the Evergy Companies' risk management profile. Evergy's Board of Directors (Evergy Board) has assigned primary oversight of enterprise risk management practices to the Audit Committee of the Evergy Board. At least annually, the Audit Committee reviews and discusses with management the Evergy Companies' enterprise risk management policies, processes, and frameworks, including conclusions reached regarding risk assessment and risk management.
Cybersecurity Risk Management Third Party Engaged [Flag]	true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]	false
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Text Block]	While the Evergy Companies have a cybersecurity program designed to protect and preserve the integrity of their information systems, the Evergy Companies also maintain cybersecurity insurance to manage financial statement risk resulting from specific cyber-attacks. Although the Evergy Companies maintain cybersecurity insurance, there can be no guarantee that the Evergy Companies' insurance coverage limits will protect against any future claims or that such insurance proceeds will be paid in a timely manner. The Evergy Companies have been subjected to attempted cyber-attacks from time to time, and will likely continue to be subject to such attempted attacks, but these prior attacks have not had a material impact on the Evergy Companies' operations or financial results to date. However, because technology is increasingly complex and cyber-attacks are increasingly sophisticated and more frequent through the use of such tools as AI, there can be no assurance that such incidents will not have a material adverse effect on the Evergy Companies in the future. See Item 1A. Risk Factors – Operational Risks for additional information.
Cybersecurity Risk Board of Directors Oversight [Text Block]	The Senior Vice President, Chief Technology Officer (CTO) and Vice President, Chief Nuclear Officer (CNO), have overall accountability for the assessment, identification and management of cybersecurity risks on behalf of the Evergy Companies and Wolf Creek, respectively, subject to review by the Evergy Board and its committees. The CTO and CNO leverage the input and operations of the security management and operations team within each organizational structure. The security teams, comprised of cybersecurity professionals, lead the daily cyber risk mitigation efforts including cyber training of the workforce, threat monitoring, identification of potential cyber events and applicable compliance obligations. See Part I, Item 1, Business – Information about Evergy’s Executive Officers for a description of the CTO's experience. The CNO has management responsibility of Wolf Creek where he has served in executive capacities since joining Wolf Creek in 2014. Prior to joining Wolf Creek, he served as vice president of engineering and site vice president of another nuclear power plant from 2009 until 2014.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	The Evergy Board has assigned primary oversight of cybersecurity risk to the Operations Committee of the Evergy Board.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	At each Operations Committee meeting, the CTO discusses the Evergy Companies' cybersecurity metrics and scorecard performance; global, industry and Evergy-specific cybersecurity news; third-party assessments of the Evergy Companies' cybersecurity program; and industry benchmarking results. The Operations Committee meets regularly throughout the year and may meet more frequently or otherwise be informed of cybersecurity risk and incident information as needed. The CNO discusses with the Operations Committee risks specific to Wolf Creek, including cybersecurity risk. At least once each year, the Evergy Board receives a report from management on key business and compliance risks and related mitigation plans, and management discusses cybersecurity matters with the Evergy Board in connection with this report.
Cybersecurity Risk Role of Management [Text Block]	The CTO and CNO leverage the input and operations of the security management and operations team within each organizational structure. The security teams, comprised of cybersecurity professionals, lead the daily cyber risk mitigation efforts including cyber training of the workforce, threat monitoring, identification of potential cyber events and applicable compliance obligations.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	The Senior Vice President, Chief Technology Officer (CTO) and Vice President, Chief Nuclear Officer (CNO), have overall accountability for the assessment, identification and management of cybersecurity risks on behalf of the Evergy Companies and Wolf Creek, respectively, subject to review by the Evergy Board and its committees.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	See Part I, Item 1, Business – Information about Evergy’s Executive Officers for a description of the CTO's experience. The CNO has management responsibility of Wolf Creek where he has served in executive capacities since joining Wolf Creek in 2014. Prior to joining Wolf Creek, he served as vice president of engineering and site vice president of another nuclear power plant from 2009 until 2014.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	Cybersecurity incidents are identified and mitigated by cybersecurity incident response plans that detail any actions to be taken when a cybersecurity incident occurs. The cybersecurity incident response plans define the organization, roles and responsibilities of the teams tasked with mitigating the impact of the cybersecurity incident. They define repeatable processes for responding to cybersecurity incidents; ensure communication to the CTO and CNO, as appropriate; minimize the impact to customer and business operations; coordinate response activities with external organizations; decrease the likelihood of reoccurrence and ensure regulatory reporting occurs, among other objectives.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2022
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation Each of Evergy's, Evergy Kansas Central's and Evergy Metro's consolidated financial statements includes the accounts of their subsidiaries and variable interest entities (VIEs) of which they are the primary beneficiary. Undivided interests in jointly-owned generation facilities are included on a proportionate basis. Intercompany transactions have been eliminated. The Evergy Companies assess financial performance and allocate resources on a consolidated basis (i.e., operate in one segment). Evergy Metro elected not to apply "push-down accounting" related to the merger that created Evergy in 2018, whereby the adjustments of assets and liabilities to fair value and the resulting goodwill would be recorded on the financial statements of the acquired subsidiary. These adjustments for Evergy Metro, as well as those related to the other acquired assets and liabilities from the merger are only reflected on Evergy's consolidated financial statements.
Use of Estimates	Use of Estimates The process of preparing financial statements in conformity with generally accepted accounting principles (GAAP) requires the use of estimates and assumptions that affect the reported amounts of certain types of assets, liabilities, revenues and expenses. Such estimates primarily relate to unsettled transactions and events as of the date of the financial statements. Accordingly, upon settlement, actual results may differ from estimated amounts.
Cash and Cash Equivalents	Cash, Cash Equivalents and Restricted Cash
Fuel Inventory and Supplies	Fuel Inventory and Supplies
Property, Plant and Equipment	Property, Plant and Equipment The Evergy Companies record the value of property, plant and equipment, including that of VIEs, at cost. For plant, cost includes contracted services, direct labor and materials, indirect charges for engineering and supervision and an allowance for funds used during construction (AFUDC). AFUDC represents the allowed cost of capital used to finance utility construction activity. AFUDC equity funds are included as a non-cash item in other income and AFUDC borrowed funds are a reduction of interest expense. AFUDC is computed by applying a composite rate to qualified construction work in progress. The rates used to compute gross AFUDC are compounded semi-annually. When property units are retired or otherwise disposed, the original cost, net of salvage, is charged to accumulated depreciation. Repair of property and replacement of items not considered to be units of property are expensed as incurred, except for planned refueling and maintenance outages at Wolf Creek Generating Station (Wolf Creek). As authorized by regulators, the incremental maintenance cost incurred for such outages is deferred and amortized to expense ratably over the period between planned outages.
Depreciation and Amortization	Depreciation and Amortization
Plant to be Retired, Net	Abandoned Plant When the Evergy Companies retire utility plant, the original cost, net of salvage, is charged to accumulated depreciation. However, when it becomes probable an asset will be retired significantly in advance of its original expected useful life and in the near term, the cost of the asset and related accumulated depreciation is recognized as a separate asset and a probable abandonment. If the asset is still in service, the net amount is classified as plant to be retired, net on the consolidated balance sheets. If the asset is no longer in service, the net amount is classified as a regulatory asset on the consolidated balance sheets. The Evergy Companies must also assess the probability of full recovery of the remaining net book value of the abandonment. The net book value that may be retained as an asset on the balance sheet for the abandonment is dependent upon amounts that may be recovered through regulated rates, including any return. An impairment charge, if any, would equal the difference between the remaining net book value of the asset and the present value of the future revenues expected from the asset.
Asset Impairment Charges		$ 26.7
Nuclear Plant Decommissioning Costs	Nuclear Plant Decommissioning Costs Nuclear plant decommissioning cost estimates are based on either the immediate dismantling method or the deferred dismantling method as determined by the State Corporation Commission of the State of Kansas (KCC) and Public Service Commission of the State of Missouri (MPSC) and include the costs of decontamination, dismantlement and site restoration. Based on these cost estimates, Evergy Kansas Central and Evergy Metro each contribute to a tax-qualified trust fund to be used to decommission Wolf Creek. Related liabilities for decommissioning are included on Evergy's, Evergy Kansas Central's and Evergy Metro's consolidated balance sheets in asset retirement obligations (AROs).
Regulatory Accounting	Regulatory Accounting Accounting standards are applied that recognize the economic effects of rate regulation. Accordingly, regulatory assets and liabilities have been recorded when required by a regulatory order or based on regulatory precedent. See Note 4 for additional information concerning regulatory matters.
Cash Surrender Value of Life Insurance	Cash Surrender Value of Life Insurance Amounts related to corporate-owned life insurance (COLI) are recorded on the consolidated balance sheets in other long-term assets and are detailed in the following table for Evergy. Substantially all of Evergy's COLI-related balances relate to Evergy Kansas Central's COLI activity. Increases in cash surrender value and death benefits are recorded in other income in the Evergy Companies' consolidated statements of income and comprehensive income. Interest expense incurred on policy loans is offset against the policy income. Income from death benefits is highly variable from period to period.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The following methods and assumptions were used to estimate the fair value of the following financial instruments for which it was practicable to estimate that value. Nuclear decommissioning trust - The Evergy Companies' nuclear decommissioning trust assets are recorded at fair value based on quoted market prices of the investments held by the fund and/or valuation models. Derivative instruments - The Evergy Companies' derivative instruments are recorded at fair value based on quoted market prices for exchange-traded derivative instruments, quoted prices for similar contracts and/or valuation models. Pension plans - For financial reporting purposes, the market value of plan assets is the fair value based on quoted market prices of the investments held by the fund and/or valuation models.
Derivatives, Policy	Derivative Instruments The Evergy Companies record derivative instruments on the balance sheet at fair value in accordance with GAAP. The Evergy Companies enter into derivative contracts to manage risk exposure to commodity price and interest rate fluctuations and also for trading purposes. See Note 13 for additional information regarding derivative financial instruments and hedging activities.
Revenue Recognition	Revenue Recognition The Evergy Companies recognize revenue on the sale of electricity to customers over time as the service is provided in the amount they have the right to invoice. Revenues recorded include electric services provided but not yet billed by the Evergy Companies. Unbilled revenues are recorded for kWh usage in the period following the customers' billing cycle to the end of the month. This estimate is based on net system kWh usage less actual billed kWhs. The Evergy Companies' estimated unbilled kWhs are allocated and priced by regulatory jurisdiction across the rate classes based on actual billing rates. The Evergy Companies' unbilled revenue estimate is affected by factors including fluctuations in energy demand, weather, line losses and changes in the composition of customer classes. See Note 3 for the balance of unbilled receivables for each of Evergy, Evergy Kansas Central and Evergy Metro as of December 31, 2024 and 2023. The Evergy Companies also collect sales taxes and franchise fees from customers concurrent with revenue-producing activities that are levied by state and local governments. These items are excluded from revenue, and thus are not reflected on the consolidated statements of income and comprehensive income for Evergy, Evergy Kansas Central and Evergy Metro.
Allowance for Credit Losses	Allowance for Credit Losses Historical loss information generally provides the basis for the Evergy Companies' assessment of expected credit losses. The Evergy Companies use an aging of accounts receivable method to assess historical loss information. When historical experience may not fully reflect the Evergy Companies' expectations about the future, the Evergy Companies will adjust historical loss information, as necessary, to reflect the current conditions and reasonable and supportable forecasts not already reflected in the historical loss information. Receivables are charged off when they are deemed uncollectible, which is based on a number of factors including specific facts surrounding an account and management's judgment.
Asset Impairments	Asset Impairments Long-lived assets and finite-lived intangible assets subject to amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If the sum of the undiscounted expected future cash flows from an asset to be held and used is less than the carrying value of the asset, an asset impairment must be recognized in the financial statements. The amount of impairment recognized is the excess of the carrying value of the asset over its fair value. Goodwill and indefinite lived intangible assets are tested for impairment annually and when an event occurs indicating the possibility that an impairment exists. The annual test must be performed at the same time each year. The goodwill impairment test consists of comparing the fair value of a reporting unit to its carrying amount, including goodwill, to identify potential impairment. In the event that the carrying amount exceeds the fair value of the reporting unit, an impairment loss is recognized for the difference between the carrying amount of the reporting unit and its fair value. See Note 5 for additional details on goodwill.
Income Taxes	Income Taxes Income taxes are accounted for using the asset/liability approach. Deferred tax assets and liabilities are determined based on the temporary differences between the financial reporting and tax bases of assets and liabilities, applying enacted statutory tax rates in effect for the year in which the differences are expected to reverse. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion of the deferred tax assets will not be realized. The Evergy Companies recognize tax benefits based on a "more-likely-than-not" recognition threshold. In addition, the Evergy Companies recognize interest accrued related to unrecognized tax benefits in interest expense and penalties in operating expenses. Evergy files a consolidated federal income tax return as well as unitary and combined income tax returns in several state jurisdictions with Kansas and Missouri being the most significant. Income taxes for consolidated or combined subsidiaries are allocated to the subsidiaries based on separate company computations of income or loss. Evergy Kansas Central's and Evergy Metro's income tax provisions include taxes allocated based on their separate company's income or loss. The Evergy Companies have established a net regulatory liability for future refunds to be made to customers for amounts collected from customers in excess of income taxes in current rates. Tax credits are recognized in the year generated except for certain Evergy Kansas Central, Evergy Metro and Evergy Missouri West investment tax credits that have been deferred and amortized over the remaining service lives of the related properties.
Earnings Per Share	Earnings Per Share

SUMMARY OF SIGNIFICANT ACCOUN_3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
	Dec. 31, 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. December 31 2024 2023 Evergy (millions) Current assets Cash and cash equivalents $ 22.0 $ 27.7 Other 6.2 — Other assets Other 1.7 — Total cash, cash equivalents and restricted cash $ 29.9 $ 27.7
Schedule of Fuel Inventory and Supplies	The following table separately states the balances for fuel inventory and supplies. December 31 2024 2023 Evergy (millions) Fuel inventory $ 264.2 $ 257.3 Supplies 603.2 518.9 Fuel inventory and supplies $ 867.4 $ 776.2 Evergy Kansas Central Fuel inventory $ 154.2 $ 138.6 Supplies 318.3 273.3 Fuel inventory and supplies $ 472.5 $ 411.9 Evergy Metro Fuel inventory $ 71.9 $ 81.5 Supplies 211.9 183.1 Fuel inventory and supplies $ 283.8 $ 264.6
Schedule of Allowance for Funds used During Construction	The amounts of the Evergy Companies' AFUDC for borrowed and equity funds are detailed in the following table. 2024 2023 2022 Evergy (millions) AFUDC borrowed funds $ 41.8 $ 39.3 $ 15.8 AFUDC equity funds 19.6 10.8 22.5 Total $ 61.4 $ 50.1 $ 38.3 Evergy Kansas Central AFUDC borrowed funds $ 24.7 $ 22.2 $ 6.9 AFUDC equity funds 12.5 6.4 8.5 Total $ 37.2 $ 28.6 $ 15.4 Evergy Metro AFUDC borrowed funds $ 11.6 $ 11.8 $ 6.5 AFUDC equity funds 7.1 4.4 14.2 Total $ 18.7 $ 16.2 $ 20.7 The average rates used in the calculation of AFUDC are detailed in the following table. 2024 2023 2022 Evergy Kansas Central 5.2% 5.7% 3.1% Evergy Metro 5.8% 5.2% 5.7% Evergy Missouri West 5.1% 5.6% 2.3%
Schedule pf Depreciable Lives of Property Plant and Equipment	The depreciable lives of Evergy's, Evergy Kansas Central's and Evergy Metro's property, plant and equipment are detailed in the following table. Evergy Evergy Kansas Central Evergy Metro (years) Generating facilities 5 to 66 5 to 66 7 to 58 Transmission facilities 27 to 66 29 to 63 27 to 64 Distribution facilities 10 to 63 13 to 61 10 to 54 Other 5 to 57 5 to 57 8 to 37
Schedule of Cash Surrender Value of Corporate Owned Life Insurance	Substantially all of Evergy's COLI-related balances relate to Evergy Kansas Central's COLI activity. December 31 2024 2023 Evergy (millions) Cash surrender value of policies $ 1,322.6 $ 1,349.9 Borrowings against policies (1,196.2) (1,221.1) Corporate-owned life insurance, net $ 126.4 $ 128.8
Schedule of Other Income Expense	The table below shows the detail of other expense for each of the Evergy Companies. 2024 2023 2022 Evergy (millions) Non-service cost component of net benefit cost $ (16.6) $ (51.2) $ (62.9) Corporate-owned life insurance (21.3) (21.7) (23.0) Other (2.5) (2.2) (11.4) Other expense $ (40.4) $ (75.1) $ (97.3) Evergy Kansas Central Non-service cost component of net benefit cost $ 2.1 $ (17.6) $ (17.1) Corporate-owned life insurance (20.2) (20.6) (21.9) Other (0.6) (0.5) (0.6) Other expense $ (18.7) $ (38.7) $ (39.6) Evergy Metro Non-service cost component of net benefit cost $ (10.1) $ (24.8) $ (31.0) Corporate-owned life insurance (1.0) (1.1) (1.0) Other (1.4) (1.1) (1.9) Other expense $ (12.5) $ (27.0) $ (33.9)
Schedule of Earnings Per Share, Basic and Diluted	The following table reconciles Evergy's basic and diluted EPS. 2024 2023 2022 Income (millions, except per share amounts) Net income $ 885.8 $ 743.6 $ 765.0 Less: Net income attributable to noncontrolling interests 12.3 12.3 12.3 Net income attributable to Evergy, Inc. $ 873.5 $ 731.3 $ 752.7 Common Shares Outstanding Weighted average number of common shares outstanding - basic 230.3 230.0 229.9 Add: effect of dilutive securities 0.3 0.5 0.4 Diluted average number of common shares outstanding 230.6 230.5 230.3 Basic EPS $ 3.79 $ 3.18 $ 3.27 Diluted EPS $ 3.79 $ 3.17 $ 3.27
Supplemental Cash Flow Information	Supplemental Cash Flow Information Year Ended December 31 2024 2023 2022 Evergy (millions) Cash paid for (received from): Interest, net of amount capitalized $ 538.5 $ 500.9 $ 393.7 Interest of VIEs 13.1 — — Income taxes, net of refunds 38.0 34.4 21.6 Non-cash investing transactions: Property, plant and equipment additions 277.5 251.3 354.7 Year Ended December 31 2024 2023 2022 Evergy Kansas Central (millions) Cash paid for (received from): Interest, net of amount capitalized $ 220.6 $ 195.3 $ 170.2 Income taxes, net of refunds 10.7 54.4 79.8 Non-cash investing transactions: Property, plant and equipment additions 158.0 134.1 203.9 Year Ended December 31 2024 2023 2022 Evergy Metro (millions) Cash paid for (received from): Interest, net of amount capitalized $ 145.9 $ 134.3 $ 114.6 Income taxes, net of refunds 38.5 9.8 (15.2) Non-cash investing transactions: Property, plant and equipment additions 86.3 83.2 125.8

REVENUE (Tables)

REVENUE (Tables)	12 Months Ended
	Dec. 31, 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 2024 2023 2022 Revenues (millions) Residential $ 2,186.6 $ 2,036.7 $ 2,168.2 Commercial 1,963.7 1,832.4 1,888.5 Industrial 682.0 625.9 686.2 Other retail 43.3 43.2 (32.1) Total electric retail $ 4,875.6 $ 4,538.2 $ 4,710.8 Wholesale 320.5 373.5 509.9 Transmission 482.6 403.2 343.7 Industrial steam and other 25.7 30.2 24.8 Total revenue from contracts with customers $ 5,704.4 $ 5,345.1 $ 5,589.2 Other 142.9 163.1 269.9 Operating revenues $ 5,847.3 $ 5,508.2 $ 5,859.1 Evergy's other retail electric revenues in 2022 include a $68.0 million recognition of a regulatory liability for the refund of revenues previously collected from customers since December 2018 for the return on investment of the retired Sibley Station. Evergy Kansas Central 2024 2023 2022 Revenues (millions) Residential $ 983.5 $ 821.0 $ 980.1 Commercial 842.7 722.9 822.9 Industrial 448.9 398.5 465.7 Other retail 25.2 18.1 17.9 Total electric retail $ 2,300.3 $ 1,960.5 $ 2,286.6 Wholesale 237.2 296.8 389.9 Transmission 455.0 385.8 305.0 Other 2.7 2.1 2.2 Total revenue from contracts with customers $ 2,995.2 $ 2,645.2 $ 2,983.7 Other 11.9 53.2 72.2 Operating revenues $ 3,007.1 $ 2,698.4 $ 3,055.9 Evergy Metro 2024 2023 2022 Revenues (millions) Residential $ 738.8 $ 748.4 $ 746.4 Commercial 776.7 778.9 758.6 Industrial 132.7 130.9 127.0 Other retail 10.3 12.7 11.5 Total electric retail $ 1,658.5 $ 1,670.9 $ 1,643.5 Wholesale 82.6 91.9 111.9 Transmission 19.9 14.3 18.2 Other 3.7 3.3 0.9 Total revenue from contracts with customers $ 1,764.7 $ 1,780.4 $ 1,774.5 Other 129.0 108.6 196.1 Operating revenues $ 1,893.7 $ 1,889.0 $ 1,970.6

RECEIVABLES (Tables)

RECEIVABLES (Tables)	12 Months Ended
	Dec. 31, 2024
Receivables [Abstract]
Schedule of Receivables	The Evergy Companies' receivables are detailed in the following table. December 31 2024 2023 Evergy (millions) Customer accounts receivable - billed $ 2.7 $ 2.6 Customer accounts receivable - unbilled 108.4 109.1 Other receivables 150.0 169.4 Allowance for credit losses (15.7) (24.2) Total $ 245.4 $ 256.9 Evergy Kansas Central Customer accounts receivable - unbilled $ 36.0 $ 39.9 Other receivables 104.9 143.5 Allowance for credit losses (7.8) (11.6) Total $ 133.1 $ 171.8 Evergy Metro Customer accounts receivable - unbilled $ 28.5 $ 27.2 Other receivables 35.4 35.7 Allowance for credit losses (5.8) (7.9) Total $ 58.1 $ 55.0 December 31 2024 2023 (millions) Evergy $ 68.9 $ 61.5 Evergy Kansas Central 65.3 59.9 Evergy Metro 2.6 0.8 December 31 2024 2023 (millions) Evergy $ 401.0 $ 342.0 Evergy Kansas Central 215.0 166.0 Evergy Metro 136.0 126.0
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 11.7 15.4 Write-offs (32.5) (33.3) Recoveries of prior write-offs 12.3 10.7 Ending balance December 31 $ 15.7 $ 24.2 Evergy Kansas Central Beginning balance January 1 $ 11.6 $ 16.9 Credit loss expense 6.6 7.7 Write-offs (15.6) (17.7) Recoveries of prior write-offs 5.2 4.7 Ending balance December 31 $ 7.8 $ 11.6 Evergy Metro Beginning balance January 1 $ 7.9 $ 9.3 Credit loss expense 4.5 5.0 Write-offs (11.6) (10.5) Recoveries of prior write-offs 5.0 4.1 Ending balance December 31 $ 5.8 $ 7.9

RATE MATTERS AND REGULATION (Ta

RATE MATTERS AND REGULATION (Tables)	12 Months Ended
	Dec. 31, 2024
Regulated Operations [Abstract]
Schedule of Regulatory Assets	The Evergy Companies' regulatory assets and liabilities are detailed in the following tables. December 31 2024 2023 Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Regulatory Assets (millions) Pension and post-retirement costs $ 47.3 $ — $ — $ 91.6 $ 29.7 $ — Debt reacquisition costs 74.8 69.8 4.7 81.2 75.3 5.3 Debt fair value adjustment 81.6 — — 87.0 — — Asset retirement obligations fair value 121.9 — — 120.7 — — Depreciation 238.3 55.6 94.7 168.7 44.6 66.0 Cost of removal 332.1 133.5 167.8 372.3 165.6 168.2 Asset retirement obligations 189.0 81.5 82.2 152.9 65.9 64.0 Analog meter unrecovered investment 6.2 6.2 — 8.3 8.3 — Treasury yield hedges 17.0 17.0 — 18.1 18.1 — Iatan No. 1 and common facilities 5.6 — 2.5 5.9 — 2.5 Iatan No. 2 construction accounting costs 22.7 — 11.4 23.4 — 11.7 Property taxes 26.6 — 23.7 56.0 28.3 25.3 Disallowed plant costs 13.2 13.2 — 13.5 13.5 — La Cygne environmental costs 7.7 5.8 1.9 8.8 6.8 2.0 Deferred customer programs 38.5 15.9 17.2 20.3 6.7 11.2 Fuel recovery mechanisms 25.7 16.3 9.4 101.3 — 14.1 February 2021 winter weather event 8.3 8.3 — 403.5 79.7 — February 2021 winter weather event securitized costs 310.4 — — — — — Solar rebates 3.4 — — 9.9 — — Transmission delivery charge 22.0 20.0 2.0 2.0 0.9 1.1 Wolf Creek outage 14.6 7.3 7.3 8.4 4.2 4.2 Pension and other post-retirement benefit 82.4 31.0 31.9 85.8 32.0 34.2 Retired generation facilities 120.8 — — 138.2 — — Merger transition costs 18.4 8.7 6.9 23.1 11.0 8.6 Other regulatory assets 71.7 36.2 8.5 86.5 42.3 15.6 Total 1,900.2 526.3 472.1 2,087.4 632.9 434.0 Less: current portion (180.9) (79.7) (42.7) (292.1) (127.7) (53.2) Total noncurrent regulatory assets $ 1,719.3 $ 446.6 $ 429.4 $ 1,795.3 $ 505.2 $ 380.8
Schedule of Regulatory Liabilities	December 31 2024 2023 Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Regulatory Liabilities (millions) Taxes refundable through future rates $ 1,631.4 $ 1,008.5 $ 477.7 $ 1,737.8 $ 1,047.2 $ 519.2 Nuclear production tax credits 168.6 82.4 86.2 — — — Deferred regulatory gain from sale 26.1 26.1 — 31.6 31.6 — Emission allowances 30.2 — 30.2 34.2 — 34.2 Nuclear decommissioning 387.2 142.1 245.1 318.7 125.5 193.2 Pension and post-retirement costs 206.6 39.0 165.4 124.8 21.9 100.5 Jurisdictional allowance for funds used 23.8 22.1 1.7 24.4 22.7 1.7 La Cygne leasehold dismantling costs 29.6 29.6 — 29.6 29.6 — Kansas tax credits 8.4 8.4 — 16.8 16.8 — Purchase power agreement 3.0 3.0 — 3.7 3.7 — Fuel recovery mechanisms 21.5 — 0.2 34.7 34.7 — February 2021 winter weather event 3.0 — 3.0 13.0 — 13.0 Sibley AAO 52.8 — — 79.2 — — TFR refunds 7.1 7.1 — 11.2 11.2 — COLI rate credits refund 64.4 64.4 — 96.5 96.5 — Levelized rate recovery 65.0 65.0 — 38.1 38.1 — Other regulatory liabilities 117.1 54.7 37.4 131.2 57.0 41.4 Total 2,845.8 1,552.4 1,046.9 2,725.5 1,536.5 903.2 Less: current portion (173.8) (76.6) (38.5) (183.0) (104.1) (43.0) Total noncurrent regulatory liabilities $ 2,672.0 $ 1,475.8 $ 1,008.4 $ 2,542.5 $ 1,432.4 $ 860.2

ASSET RETIREMENT OBLIGATIONS (T

ASSET RETIREMENT OBLIGATIONS (Tables)	12 Months Ended
	Dec. 31, 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 December 31, 2024 and 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 (28.0) 3.2 (24.3) 1.6 (0.5) 1.6 Settlements (12.1) (21.8) (7.4) (9.8) (4.3) (8.6) Accretion 61.2 58.8 35.4 32.7 23.0 23.2 Ending balance $ 1,297.0 $ 1,203.1 $ 647.8 $ 599.3 $ 502.7 $ 460.4 Less: current portion (28.7) (40.3) (16.5) (22.2) (11.8) (16.0) Total noncurrent asset $ 1,268.3 $ 1,162.8 $ 631.3 $ 577.1 $ 490.9 $ 444.4

PROPERTY, PLANT AND EQUIPMENT (

PROPERTY, PLANT AND EQUIPMENT (Tables)	12 Months Ended
	Dec. 31, 2024
Property, Plant and Equipment [Abstract]
Schedule of Public Utility Property, Plant, and Equipment	The following tables summarize the property, plant and equipment of Evergy, Evergy Kansas Central and Evergy Metro. December 31, 2024 Evergy Evergy Kansas Central Evergy Metro (millions) Electric plant in service $ 36,444.9 $ 17,914.9 $ 13,468.3 Electric plant acquisition adjustment 742.9 724.9 — Accumulated depreciation (14,165.5) (6,914.4) (5,752.6) Plant in service 23,022.3 11,725.4 7,715.7 Construction work in progress 1,707.0 1,053.7 476.1 Nuclear fuel, net 200.9 100.3 100.6 Plant to be retired, net (b) 0.7 0.7 — Net property, plant and equipment $ 24,930.9 $ 12,880.1 $ 8,292.4 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 (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 — Net property, plant and equipment (a) $ 23,728.7 $ 12,121.9 $ 8,131.2 (a) As of December 31, 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 December 31, 2024 and 2023, represents the planned retirement of Evergy Kansas Central analog meters prior to the end of their remaining useful lives. The following table summarizes the property, plant and equipment of the VIE for Evergy and Evergy Kansas Central. December 31 2024 2023 (millions) Electric plant of VIEs $ 392.1 $ 392.1 Accumulated depreciation of VIEs (265.6) (258.5) Net property, plant and equipment of VIEs $ 126.5 $ 133.6 The Evergy Companies' depreciation expense is detailed in the following table. 2024 2023 2022 (millions) Evergy (a) $ 965.9 $ 943.3 $ 836.1 Evergy Kansas Central (a) 542.3 497.7 468.2 Evergy Metro 294.6 319.7 261.7 (a) Approximately $7.1 million of depreciation expense in each of 2024, 2023 and 2022 was attributable to property, plant and equipment of VIEs.

JOINTLY-OWNED ELECTRIC UTILIT_2

JOINTLY-OWNED ELECTRIC UTILITY PLANTS (Tables)	12 Months Ended
	Dec. 31, 2024
Jointly Owned Electric Utility Plants [Abstract]
Schedule of Jointly Owned Utility Plants	Evergy's, Evergy Kansas Central's and Evergy Metro's share of jointly-owned electric utility plants at December 31, 2024, are detailed in the following tables. Evergy Evergy's share Electric plant in service Accumulated depreciation Nuclear fuel, net Construction work in progress 2025 accredited capacity-MWs (millions, except MW amounts) Wolf Creek Unit 94 % $ 4,335.4 $ 2,323.8 $ 200.9 $ 310.5 1,106 La Cygne Units (a) 100 % 2,379.9 1,077.4 — 48.3 1,426 Iatan No. 1 Unit 88 % 795.1 307.5 — 21.1 618 Iatan No. 2 Unit 73 % 1,429.5 488.1 — 3.2 653 Iatan Common 79 % 520.6 145.6 — 2.0 n/a Jeffrey Energy Center 100 % 2,640.1 1,112.6 — 105.3 2,183 State Line 40 % 136.0 102.0 — 7.8 209 Dogwood Energy Center 22 % 93.7 41.4 — 1.2 145 (a) The VIE consolidated by Evergy and Evergy Kansas Central holds its 50% leasehold interest in La Cygne Unit 2. This 50% leasehold interest in La Cygne Unit 2 is reflected in the information provided above. See Note 19 for additional information. Evergy Kansas Central Evergy Kansas Central's share Electric plant in service Accumulated depreciation Nuclear fuel, net Construction work in progress 2025 accredited capacity-MWs (millions, except MW amounts) Wolf Creek Unit 47 % $ 2,128.6 $ 1,137.2 $ 100.3 $ 141.6 553 La Cygne Units (a) 50 % 1,121.7 578.3 — 31.7 713 Jeffrey Energy Center 92 % 2,416.7 1,019.2 — 96.8 2,008 State Line 40 % 136.0 102.0 — 7.8 209 (a) The VIE consolidated by Evergy and Evergy Kansas Central holds its 50% leasehold interest in La Cygne Unit 2. This 50% leasehold interest in La Cygne Unit 2 is reflected in the information provided above. See Note 19 for additional information. Evergy Metro Evergy Metro's share Electric plant in service Accumulated depreciation Nuclear fuel, net Construction work in progress 2025 accredited capacity-MWs (millions, except MW amounts) Wolf Creek Unit 47 % $ 2,206.8 $ 1,186.6 $ 100.6 $ 168.9 553 La Cygne Units 50 % 1,258.2 499.1 — 16.6 713 Iatan No. 1 Unit 70 % 618.2 258.1 — 16.9 492 Iatan No. 2 Unit 55 % 1,078.6 450.7 — 2.4 491 Iatan Common 61 % 412.8 131.4 — 1.3 n/a

PENSION PLANS AND POST-RETIRE_2

PENSION PLANS AND POST-RETIREMENT BENEFITS (Tables)	12 Months Ended
	Dec. 31, 2024
Retirement Benefits [Abstract]
Schedule of Net Funded Status	Pension Benefits Post-Retirement Benefits Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Change in projected benefit obligation (PBO) (millions) PBO as of January 1, 2024 $ 1,704.4 $ 876.2 $ 809.7 $ 192.8 $ 97.8 $ 95.0 Service cost 46.0 19.0 27.0 1.6 0.9 0.7 Interest cost 89.5 45.6 43.0 10.1 5.1 5.0 Contribution by participants — — — 5.6 0.7 4.9 Plan amendments — — — 4.2 3.3 0.9 Actuarial gain (60.7) (28.2) (31.9) (13.0) (5.3) (7.7) Benefits paid (106.4) (58.3) (47.0) (20.4) (9.2) (11.2) Special termination loss 0.2 0.2 — — — — Other (8.0) (3.5) (4.5) — — — PBO as of December 31, 2024 $ 1,665.0 $ 851.0 $ 796.3 $ 180.9 $ 93.3 $ 87.6 Change in plan assets Fair value of plan assets as of January 1, 2024 $ 1,250.7 $ 620.6 $ 630.1 $ 201.5 $ 99.1 $ 102.4 Actual return on plan assets 122.2 62.3 59.9 14.2 7.6 6.6 Contributions by employer and participants 37.2 10.6 26.6 6.4 1.2 5.2 Benefits paid (102.7) (56.1) (46.6) (19.1) (8.8) (10.3) Other (8.0) (3.5) (4.5) — — — Fair value of plan assets as of December 31, 2024 $ 1,299.4 $ 633.9 $ 665.5 $ 203.0 $ 99.1 $ 103.9 Funded status as of December 31, 2024 $ (365.6) $ (217.1) $ (130.8) $ 22.1 $ 5.8 $ 16.3 Pension Benefits Post-Retirement Benefits Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Change in projected benefit obligation (PBO) (millions) PBO as of January 1, 2023 $ 1,850.5 $ 911.7 $ 920.6 $ 201.7 $ 103.0 $ 98.6 Service cost 44.9 18.6 26.3 1.8 0.9 0.9 Interest cost 91.9 47.0 44.0 11.1 5.7 5.5 Contribution by participants — — — 6.2 1.0 5.2 Actuarial (gain) loss 64.8 42.2 22.0 (4.0) (2.6) (1.4) Benefits paid (84.1) (50.6) (32.3) (24.0) (10.2) (13.8) Settlements (256.2) (89.3) (166.9) — — — Other (7.4) (3.4) (4.0) — — — PBO as of December 31, 2023 $ 1,704.4 $ 876.2 $ 809.7 $ 192.8 $ 97.8 $ 95.0 Change in plan assets Fair value of plan assets as of January 1, 2023 $ 1,409.2 $ 668.5 $ 740.7 $ 192.9 $ 96.2 $ 96.7 Actual return on plan assets 145.2 75.5 69.7 21.6 11.5 10.1 Contributions by employer and participants 36.8 15.1 21.7 9.6 1.2 8.4 Benefits paid (80.2) (48.2) (32.0) (22.6) (9.8) (12.8) Settlements (252.9) (86.9) (166.0) — — — Other (7.4) (3.4) (4.0) — — — Fair value of plan assets as of December 31, 2023 $ 1,250.7 $ 620.6 $ 630.1 $ 201.5 $ 99.1 $ 102.4 Funded status as of December 31, 2023 $ (453.7) $ (255.6) $ (179.6) $ 8.7 $ 1.3 $ 7.4
Schedule of Amounts Recognized in Balance Sheet	Pension Benefits Post-Retirement Benefits Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Amounts recognized in the consolidated balance sheets (millions) Non-current asset $ — $ — $ — $ 33.9 $ 9.8 $ 24.1 Current pension and other post-retirement liability (5.0) (2.4) (1.1) (1.1) (0.5) (0.5) Noncurrent pension liability and other post-retirement liability (360.6) (214.7) (129.7) (10.7) (3.5) (7.3) Net amount recognized before regulatory treatment (365.6) (217.1) (130.8) 22.1 5.8 16.3 Accumulated OCI or regulatory asset/liability (173.2) 10.2 (174.7) (41.7) (20.3) (27.3) Net amount recognized as of December 31, 2024 $ (538.8) $ (206.9) $ (305.5) $ (19.6) $ (14.5) $ (11.0) Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost: Actuarial gain $ (183.0) $ (1.2) $ (173.4) $ (46.5) $ (23.9) $ (23.8) Prior service cost 9.8 11.4 (1.3) 4.8 3.6 (3.5) Net amount recognized as of December 31, 2024 $ (173.2) $ 10.2 $ (174.7) $ (41.7) $ (20.3) $ (27.3) Pension Benefits Post-Retirement Benefits Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Amounts recognized in the consolidated balance sheets (millions) Non-current asset $ — $ — $ — $ 24.7 $ 5.0 $ 19.7 Current pension and other post-retirement liability (4.5) (2.5) (0.5) (1.1) (0.5) (0.6) Noncurrent pension liability and other post- (449.2) (253.1) (179.1) (14.9) (3.2) (11.7) Net amount recognized before regulatory treatment (453.7) (255.6) (179.6) 8.7 1.3 7.4 Accumulated OCI or regulatory asset/liability (92.4) 60.7 (144.1) (34.0) (18.6) (21.7) Net amount recognized as of December 31, 2023 $ (546.1) $ (194.9) $ (323.7) $ (25.3) $ (17.3) $ (14.3) Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost: Actuarial (gain) loss $ (104.1) $ 47.3 $ (142.8) $ (34.7) $ (19.0) $ (16.9) Prior service cost 11.7 13.4 (1.3) 0.7 0.4 (4.8) Net amount recognized as of December 31, 2023 $ (92.4) $ 60.7 $ (144.1) $ (34.0) $ (18.6) $ (21.7) Actuarial gains for the Evergy Companies' pension benefit plans for 2024 were primarily driven by an increase in the discount rate used to measure the benefit obligation as a result of higher market interest rates. Actuarial losses for the Evergy Companies' pension benefit plans for 2023 were primarily driven by a decrease in the discount rate used to measure the benefit obligation as a result of lower market interest rates. See the weighted average assumptions used to determine the benefit obligations within this Note 9 for further information.
Schedule of Net Benefit Costs	The assets in the aforementioned trusts are not included in the table above. See Note 14 for more information on these amounts. Pension Benefits Post-Retirement Benefits Year Ended December 31, 2024 Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Components of net periodic benefit costs (millions) Service cost $ 46.0 $ 19.0 $ 27.0 $ 1.6 $ 0.9 $ 0.7 Interest cost 89.5 45.6 43.0 10.1 5.1 5.0 Expected return on plan assets (86.7) (43.0) (43.7) (11.5) (5.9) (5.6) Prior service cost 1.9 1.9 — 0.1 0.1 (0.4) Recognized net actuarial (gain) loss (17.4) 0.9 (17.5) (3.9) (2.0) (1.8) Special termination benefits 0.2 0.2 — — — — Net periodic benefit costs before regulatory adjustment and intercompany allocations 33.5 24.6 8.8 (3.6) (1.8) (2.1) Regulatory adjustment 24.1 (6.4) 29.8 (0.1) 0.8 (0.6) Intercompany allocations n/a (1.9) (2.2) n/a (0.1) 0.6 Net periodic benefit costs (income) 57.6 16.3 36.4 (3.7) (1.1) (2.1) Other changes in plan assets and benefit obligations recognized in OCI or regulatory assets/liabilities Current year net gain (96.3) (47.7) (48.1) (15.7) (7.0) (8.7) Amortization of gain (loss) 17.4 (0.9) 17.5 3.9 2.0 1.8 Prior service cost — — — 4.2 3.4 0.9 Amortization of prior service cost (1.9) (1.9) — (0.1) (0.1) 0.4 Total recognized in OCI or regulatory asset/liability (80.8) (50.5) (30.6) (7.7) (1.7) (5.6) Total recognized in net periodic benefit costs and OCI or regulatory asset/liability $ (23.2) $ (34.2) $ 5.8 $ (11.4) $ (2.8) $ (7.7) Pension Benefits Post-Retirement Benefits Year Ended December 31, 2023 Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Components of net periodic benefit costs (millions) Service cost $ 44.9 $ 18.6 $ 26.3 $ 1.8 $ 0.9 $ 0.9 Interest cost 91.9 47.0 44.0 11.1 5.7 5.5 Expected return on plan assets (87.6) (44.1) (43.4) (11.9) (6.3) (5.7) Prior service cost 1.9 2.0 — 0.1 — (0.4) Recognized net actuarial gain (21.5) (2.5) (18.2) (4.2) (2.0) (2.1) Settlement (gain) loss (21.1) 1.1 (22.2) — — — Net periodic benefit costs before regulatory adjustment and intercompany allocations 8.5 22.1 (13.5) (3.1) (1.7) (1.8) Regulatory adjustment 94.0 30.4 63.0 (0.1) (1.7) 2.1 Intercompany allocations n/a (2.3) (1.1) n/a 0.3 — Net periodic benefit costs (income) 102.5 50.2 48.4 (3.2) (3.1) 0.3 Other changes in plan assets and benefit obligations recognized in OCI or regulatory assets/liabilities Current year net (gain) loss 7.1 11.0 (4.2) (13.6) (7.8) (5.8) Amortization of gain 21.5 2.5 18.2 4.2 2.0 2.1 Amortization of prior service cost (1.9) (2.0) — (0.1) — 0.4 Net gain (loss) due to settlement 21.1 (1.1) 22.2 — — — Total recognized in OCI or regulatory asset/liability 47.8 10.4 36.2 (9.5) (5.8) (3.3) Total recognized in net periodic benefit costs and OCI or regulatory asset/liability $ 150.3 $ 60.6 $ 84.6 $ (12.7) $ (8.9) $ (3.0) Pension Benefits Post-Retirement Benefits Year Ended December 31, 2022 Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Components of net periodic benefit costs (millions) Service cost $ 79.7 $ 30.7 $ 49.0 $ 3.0 $ 1.5 $ 1.5 Interest cost 79.3 38.8 39.8 7.9 4.1 3.8 Expected return on plan assets (104.0) (51.2) (56.4) (10.2) (6.5) (3.7) Prior service cost 1.9 2.0 — 0.5 0.4 (1.4) Recognized net actuarial (gain) loss 34.8 25.6 38.6 (0.3) (0.2) (0.7) Special termination benefits 52.8 15.6 37.2 6.7 1.4 5.3 Net periodic benefit costs before regulatory adjustment and intercompany allocations 144.5 61.5 108.2 7.6 0.7 4.8 Regulatory adjustment 14.7 0.7 (12.1) (7.1) (3.6) (1.3) Intercompany allocations n/a 2.9 (18.4) n/a 0.3 (0.6) Net periodic benefit costs (income) 159.2 65.1 77.7 0.5 (2.6) 2.9 Other changes in plan assets and benefit obligations recognized in OCI or regulatory assets/liabilities Current year net gain (421.4) (186.1) (226.7) (13.0) (3.0) (10.0) Amortization of gain (loss) (34.7) (25.6) (38.6) 0.4 0.2 0.7 Amortization of prior service cost (1.9) (2.0) — (0.5) (0.4) 1.4 Total recognized in OCI or regulatory asset/liability (457.4) (213.3) (264.9) (13.1) (3.2) (7.9) Total recognized in net periodic benefit costs and OCI or regulatory asset/liability $ (298.2) $ (148.2) $ (187.2) $ (12.6) $ (5.8) $ (5.0)
Schedule of Defined Benefit Plan, Plan with Projected Benefit Obligation in Excess of Plan Assets	Pension and other post-retirement benefit plans with the PBO, accumulated benefit obligation (ABO) or accumulated other post-retirement benefit obligation (APBO) in excess of the fair value of plan assets at year-end are detailed in the following tables. December 31, 2024 Evergy Evergy Kansas Central Evergy Metro (millions) ABO for all defined benefit pension plans $ 1,503.6 $ 785.9 $ 700.2 Pension plans with the PBO in excess of plan assets Projected benefit obligation $ 1,665.0 $ 851.0 $ 796.3 Fair value of plan assets 1,299.4 633.9 665.5 Pension plans with the ABO in excess of plan assets Accumulated benefit obligation $ 1,503.6 $ 785.9 $ 700.2 Fair value of plan assets 1,299.4 633.9 665.5 Other post-retirement benefit plans with the APBO in excess of plan assets Accumulated other post-retirement benefit obligation $ 78.8 $ 3.7 $ 75.1 Fair value of plan assets 67.3 — 67.3 December 31, 2023 Evergy Evergy Kansas Central Evergy Metro (millions) ABO for all defined benefit pension plans $ 1,539.7 $ 809.9 $ 711.3 Pension plans with the PBO in excess of plan assets Projected benefit obligation $ 1,704.4 $ 876.2 $ 809.7 Fair value of plan assets 1,250.7 620.6 630.1 Pension plans with the ABO in excess of plan assets Accumulated benefit obligation $ 1,539.7 $ 809.9 $ 711.3 Fair value of plan assets 1,250.7 620.6 630.1 Other post-retirement benefit plans with the APBO in excess of plan assets Accumulated other post-retirement benefit obligation $ 82.6 $ 3.5 $ 79.1 Fair value of plan assets 66.9 — 66.9
Schedule of Defined Benefit Plan, Assumptions	The following tables provide the weighted-average assumptions used to determine benefit obligations and net costs for the Evergy Companies' pension and post-retirement benefit plans. Weighted-average assumptions used to determine the benefit obligation at December 31, 2024 Pension Benefits Post-Retirement Benefits Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Discount rate 5.77 % 5.76 % 5.79 % 5.79 % 5.79 % 5.78 % Rate of compensation increase 3.72 % 3.77 % 3.70 % 3.75 % n/a 3.75 % Interest crediting rate for cash balance plans 4.40 % 4.20 % 4.63 % n/a n/a n/a Weighted-average assumptions used to determine the benefit obligation at December 31, 2023 Pension Benefits Post-Retirement Benefits Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Discount rate 5.35 % 5.34 % 5.35 % 5.43 % 5.45 % 5.41 % Rate of compensation increase 3.72 % 3.77 % 3.71 % 3.75 % n/a 3.75 % Interest crediting rate for cash balance plans 4.13 % 4.20 % 4.47 % n/a n/a n/a Weighted-average assumptions used to determine net costs for the year ended December 31, 2024 Pension Benefits Post-Retirement Benefits Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Discount rate 5.35 % 5.34 % 5.35 % 5.43 % 5.45 % 5.41 % Expected long-term return on plan assets 6.84 % 6.90 % 6.79 % 5.48 % 5.75 % 5.22 % Rate of compensation increase 3.72 % 3.77 % 3.71 % 3.75 % n/a 3.75 % Interest crediting rate for cash balance plans 4.13 % 4.20 % 4.47 % n/a n/a n/a Weighted-average assumptions used to determine net costs for the year ended December 31, 2023 Pension Benefits Post-Retirement Benefits Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Discount rate 5.45 % 5.66 % 5.62 % 5.74 % 5.75 % 5.72 % Expected long-term return on plan assets 6.71 % 6.80 % 6.62 % 5.48 % 5.75 % 5.22 % Rate of compensation increase 3.72 % 3.78 % 3.70 % 3.75 % n/a 3.75 % Interest crediting rate for cash balance plans 4.13 % 4.00 % 4.43 % n/a n/a n/a
Schedule of Expected Benefit Payments	The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid through 2034. Pension Benefits Post-Retirement Benefits Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro (millions) 2025 $ 142.7 $ 76.9 $ 64.3 $ 16.9 $ 9.4 $ 7.5 2026 143.4 75.5 66.4 16.3 9.0 7.3 2027 144.2 74.5 68.2 15.8 8.8 7.0 2028 144.6 73.4 69.6 14.0 7.7 6.3 2029 143.8 72.3 69.9 13.6 7.4 6.2 2030-2034 719.1 345.3 366.7 63.9 34.1 29.8
Schedule of Allocation of Plan Assets	The following table provides the target asset allocations by asset class for the Evergy Kansas Central and Evergy Metro pension and other post-retirement plan assets. Pension Benefits Post-Retirement Benefits Evergy Kansas Central Evergy Metro Evergy Kansas Central Evergy Metro Domestic equities 26% 25% 26% 20% International equities 20% 21% 18% 10% Bonds 39% 37% 56% 62% Mortgage & asset backed securities —% —% —% 7% Real estate investments 4% 6% —% —% Other investments 11% 11% —% 1% The fair values of the Evergy Companies' pension plan assets as of December 31, 2024 and 2023, by asset category are in the following tables. Fair Value Measurements Using December 31 Level 1 Level 2 Level 3 Assets measured at NAV Evergy Kansas Central Pension Plans (millions) Domestic equities $ 146.4 $ 128.5 $ — $ — $ 17.9 International equities 114.6 114.6 — — — Bond funds 224.7 224.7 — — — Real estate investments 22.3 — — — 22.3 Combination debt/equity/other fund 32.5 32.5 — — — Alternative investment funds 88.3 — — — 88.3 Short-term investments 5.1 — — — 5.1 Total $ 633.9 $ 500.3 $ — $ — $ 133.6 Evergy Metro Pension Plans Domestic equities $ 150.4 $ 137.2 $ — $ — $ 13.2 International equities 128.7 128.7 — — — Bond funds 181.7 181.7 — — — Corporate bonds 19.3 — 19.3 — — U.S. Treasury and agency bonds 13.1 7.1 6.0 — — Mortgage and asset backed securities 4.4 — 4.4 — — Real estate investments 42.9 — — — 42.9 Combination debt/equity/other fund 33.2 33.2 — — — Alternative investment funds 79.1 — — — 79.1 Cash and cash equivalents 6.1 6.1 — — — Short-term investments 3.8 — — — 3.8 Other 2.8 — 2.8 — — Total $ 665.5 $ 494.0 $ 32.5 $ — $ 139.0 Fair Value Measurements Using December 31 Level 1 Level 2 Level 3 Assets measured at NAV Evergy Kansas Central Pension Plans (millions) Domestic equities $ 145.9 $ 124.0 $ — $ — $ 21.9 International equities 118.2 118.2 — — — Bond funds 224.2 224.2 — — — Real estate investments 23.0 — — — 23.0 Combination debt/equity/other fund 29.2 29.2 — — — Alternative investment funds 74.6 — — — 74.6 Short-term investments 5.5 — — — 5.5 Total $ 620.6 $ 495.6 $ — $ — $ 125.0 Evergy Metro Pension Plans Domestic equities $ 138.9 $ 122.9 $ — $ — $ 16.0 International equities 120.0 120.0 — — — Bond funds 174.9 174.9 — — — Corporate bonds 21.1 — 21.1 — — U.S. Treasury and agency bonds 10.1 5.1 5.0 — — Mortgage and asset backed securities 5.1 — 5.1 — — Real estate investments 49.0 — — — 49.0 Combination debt/equity/other fund 28.4 28.4 — — — Alternative investment funds 70.8 — — — 70.8 Cash and cash equivalents 5.9 5.9 — — — Short-term investments 4.0 — — — 4.0 Other 1.9 — 1.9 — — Total $ 630.1 $ 457.2 $ 33.1 $ — $ 139.8 The fair values of the Evergy Companies' post-retirement plan assets as of December 31, 2024 and 2023, by asset category are in the following tables. Fair Value Measurements Using December 31 Level 1 Level 2 Level 3 Assets measured at NAV Evergy Kansas Central Post-Retirement Benefit Plans (millions) Domestic equities $ 26.1 $ 26.1 $ — $ — $ — International equities 17.3 17.3 — — — Bond funds 49.9 49.9 — — — Combination debt/equity/other fund 4.8 4.8 — — — Short-term investments 1.0 — — — 1.0 Total $ 99.1 $ 98.1 $ — $ — $ 1.0 Evergy Metro Post-Retirement Benefit Plans Domestic equities $ 20.5 $ 20.5 $ — $ — $ — International equities 11.3 11.3 — — — Bond funds 37.6 37.6 — — — Corporate bonds 14.5 — 14.5 — — U.S. Treasury and agency bonds 14.0 6.7 7.3 — — Mortgage and asset backed securities 0.6 — 0.6 — — Combination debt/equity/other fund 3.3 3.3 — — — Cash and cash equivalents 1.7 1.7 — — — Short-term investments 0.2 — — — 0.2 Other 0.2 — 0.2 — — Total $ 103.9 $ 81.1 $ 22.6 $ — $ 0.2 Fair Value Measurements Using December 31 Level 1 Level 2 Level 3 Assets measured at NAV Evergy Kansas Central Post-Retirement Benefit Plans (millions) Domestic equities $ 26.1 $ 26.1 $ — $ — $ — International equities 17.9 17.9 — — — Bond funds 49.6 49.6 — — — Combination debt/equity/other fund 4.5 4.5 — — — Short-term investments 1.0 — — — 1.0 Total $ 99.1 $ 98.1 $ — $ — $ 1.0 Evergy Metro Post-Retirement Benefit Plans Domestic equities $ 21.8 $ 21.8 $ — $ — $ — International equities 12.1 12.1 — — — Bond funds 36.8 36.8 — — — Corporate bonds 15.0 — 15.0 — — U.S. Treasury and agency bonds 12.2 6.1 6.1 — — Mortgage and asset backed securities 1.0 — 1.0 — — Combination debt/equity/other fund 3.0 3.0 — — — Short-term investments 0.2 — — — 0.2 Other 0.3 — 0.3 — — Total $ 102.4 $ 79.8 $ 22.4 $ — $ 0.2
Schedule of Health Care Cost Trend Rates	The cost trend assumptions are detailed in the following tables. Assumed annual health care cost growth rates as of December 31, 2024 Evergy Evergy Kansas Central Evergy Metro Health care cost trend rate assumed for next year 7.0 % n/a 7.0 % Rate to which the cost trend is assumed to decline (the ultimate trend rate) 4.5 % n/a 4.5 % Year that rate reaches ultimate trend 2032 n/a 2032 Assumed annual health care cost growth rates as of December 31, 2023 Evergy Evergy Kansas Central Evergy Metro Health care cost trend rate assumed for next year 6.9 % 6.9 % 6.9 % Rate to which the cost trend is assumed to decline (the ultimate trend rate) 4.5 % 4.5 % 4.5 % Year that rate reaches ultimate trend 2030 2030 2030
Schedule of Costs of Retirement Plans	Evergy has defined contribution savings plans (401(k)) that cover substantially all employees. Evergy matches employee contributions, subject to limits. The annual costs of the plans are detailed in the following table. 2024 2023 2022 (millions) Evergy $ 25.8 $ 24.1 $ 25.3 Evergy Kansas Central 12.2 11.3 12.0 Evergy Metro 13.6 12.8 13.3

EQUITY COMPENSATION (Tables)

EQUITY COMPENSATION (Tables)	12 Months Ended
	Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]
Schedule of Equity Compensation Expense and Associated Income Tax Benefits	The following table summarizes the Evergy Companies' equity compensation expense and the associated income tax benefit. 2024 2023 2022 Evergy (millions) Equity compensation expense $ 15.2 $ 17.7 $ 18.8 Income tax benefit 1.9 1.6 2.6 Evergy Kansas Central Equity compensation expense 6.7 6.5 8.4 Income tax benefit 1.5 1.4 1.7 Evergy Metro Equity compensation expense 4.5 5.7 6.0 Income tax (expense) benefit — (0.6) 0.2
Schedule of Restricted Stock Unit Activity	RSU activity for awards with performance measures for 2024 is summarized in the following table. Nonvested Grant Date Beginning balance as of January 1, 2024 663,727 $ 58.32 Granted 295,803 49.94 Vested (165,464) 61.41 Adjusted (61,194) 61.41 Forfeited (102,185) 54.28 Ending balance as of December 31, 2024 630,687 55.45 * weighted-average RSU activity for awards with only service requirements for 2024 is summarized in the following table. Nonvested Grant Date Beginning balance as of January 1, 2024 264,214 $ 57.76 Granted 199,816 51.22 Vested (120,813) 55.99 Forfeited (36,562) 53.96 Ending balance as of December 31, 2024 306,655 54.65 * weighted-average

SHORT-TERM BORROWINGS AND SHO_2

SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDIT (Tables)	12 Months Ended
	Dec. 31, 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 December 31, 2024 and 2023. Amounts Drawn Master Credit Facility Commercial Paper Letters of Credit Cash Borrowings Available Borrowings Weighted Average Interest Rate on Short-Term Borrowings December 31, 2024 (millions) Evergy, Inc. $ 300.0 $ 75.4 $ 0.7 $ — $ 223.9 4.70% Evergy Kansas Central 1,100.0 797.3 1.0 — 301.7 4.74% Evergy Metro 600.0 158.7 1.0 — 440.3 4.64% Evergy Missouri West 500.0 176.2 — — 323.8 4.71% Evergy $ 2,500.0 $ 1,207.6 $ 2.7 $ — $ 1,289.7 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 (Tables)

LONG-TERM DEBT (Tables)	12 Months Ended
	Dec. 31, 2024
Debt Disclosure [Abstract]
Schedule of Debt	The Evergy Companies' long-term debt is detailed in the following tables. December 31, 2024 Issuing Entity Year Due Evergy Evergy Kansas Central Evergy Metro Mortgage Bonds (millions) 3.25% Series Evergy Kansas Central, Inc. 2025 $ 250.0 $ 250.0 $ — 2.55% Series Evergy Kansas Central, Inc. 2026 350.0 350.0 — 3.10% Series Evergy Kansas Central, Inc. 2027 300.0 300.0 — 5.90% Series Evergy Kansas Central, Inc. 2033 300.0 300.0 — 4.125% Series Evergy Kansas Central, Inc. 2042 550.0 550.0 — 4.10% Series Evergy Kansas Central, Inc. 2043 430.0 430.0 — 4.625% Series Evergy Kansas Central, Inc. 2043 250.0 250.0 — 4.25% Series Evergy Kansas Central, Inc. 2045 300.0 300.0 — 3.25% Series Evergy Kansas Central, Inc. 2049 300.0 300.0 — 3.45% Series Evergy Kansas Central, Inc. 2050 500.0 500.0 — 5.70% Series Evergy Kansas Central, Inc. 2053 400.0 400.0 — 6.53% Series Evergy Kansas South, Inc. 2037 175.0 175.0 — 6.64% Series Evergy Kansas South, Inc. 2038 100.0 100.0 — 4.30% Series Evergy Kansas South, Inc. 2044 250.0 250.0 — 2.25% Series Evergy Metro, Inc. 2030 400.0 — 400.0 4.95% Series Evergy Metro, Inc. 2033 300.0 — 300.0 5.40% Series Evergy Metro, Inc. 2034 300.0 — 300.0 4.125% Series Evergy Metro, Inc. 2049 400.0 — 400.0 5.15% Series Evergy Missouri West, Inc. 2027 300.0 — — 3.75% Series Evergy Missouri West, Inc. 2032 250.0 — — 5.65% Series Evergy Missouri West, Inc. 2034 300.0 — — Pollution Control Bonds 3.19% Series (a) Evergy Kansas Central, Inc. 2032 45.0 45.0 — 3.19% Series (a) Evergy Kansas Central, Inc. 2032 30.5 30.5 — 3.19% Series (a) Evergy Kansas South, Inc. 2027 21.9 21.9 — 2.50% Series Evergy Kansas South, Inc. 2031 50.0 50.0 — 3.19% Series (a) Evergy Kansas South, Inc. 2032 14.5 14.5 — 3.19% Series (a) Evergy Kansas South, Inc. 2032 10.0 10.0 — 3.45% Series 2007A and 2007B (a) Evergy Metro, Inc. 2035 146.5 — 146.5 3.50% EIRR Bonds Evergy Metro, Inc. 2038 23.4 — 23.4 4.30% EIRR Bonds Evergy Metro, Inc. 2045 79.5 — 79.5 Senior Notes 3.65% Series (b) Evergy Metro, Inc. 2025 350.0 — 350.0 6.05% Series (5.78% rate) (b)(c) Evergy Metro, Inc. 2035 250.0 — 250.0 5.30% Series (b) Evergy Metro, Inc. 2041 400.0 — 400.0 4.20% Series (b) Evergy Metro, Inc. 2047 300.0 — 300.0 4.20% Series (b) Evergy Metro, Inc. 2048 300.0 — 300.0 3.49% Series A (d) Evergy Missouri West, Inc. 2025 36.0 — — 4.06% Series B (d) Evergy Missouri West, Inc. 2033 60.0 — — 4.74% Series C (d) Evergy Missouri West, Inc. 2043 150.0 — — 2.86% Series A (d) Evergy Missouri West, Inc. 2031 350.0 — — 3.01% Series B (d) Evergy Missouri West, Inc. 2033 75.0 — — 3.21% Series C (d) Evergy Missouri West, Inc. 2036 75.0 — — 2.90% Series (3.77% rate) (c) Evergy, Inc. 2029 800.0 — — Convertible Notes 4.50% Convertible Notes Evergy, Inc. 2027 1,400.0 — — Securitized Bonds 5.10% Securitized Bonds Evergy Missouri West Storm Funding I, LLC 2025 - 2040 319.6 — — Junior Subordinated Notes 6.65% Junior Subordinated Notes Evergy, Inc. 2055 500.0 — — Fair value adjustment (e) 81.7 — — Current maturities (f) (651.7) (250.0) (350.0) Unamortized debt discount and debt issuance costs (112.7) (43.4) (26.0) Total excluding current maturities (g) $ 11,809.2 $ 4,333.5 $ 2,873.4 December 31, 2023 Issuing Entity Year Due Evergy Evergy Kansas Central Evergy Metro Mortgage Bonds (millions) 3.25% Series Evergy Kansas Central, Inc. 2025 $ 250.0 $ 250.0 $ — 2.55% Series Evergy Kansas Central, Inc. 2026 350.0 350.0 — 3.10% Series Evergy Kansas Central, Inc. 2027 300.0 300.0 — 5.90% Series Evergy Kansas Central, Inc. 2033 300.0 300.0 — 4.125% Series Evergy Kansas Central, Inc. 2042 550.0 550.0 — 4.10% Series Evergy Kansas Central, Inc. 2043 430.0 430.0 — 4.625% Series Evergy Kansas Central, Inc. 2043 250.0 250.0 — 4.25% Series Evergy Kansas Central, Inc. 2045 300.0 300.0 — 3.25% Series Evergy Kansas Central, Inc. 2049 300.0 300.0 — 3.45% Series Evergy Kansas Central, Inc. 2050 500.0 500.0 — 5.70% Series Evergy Kansas South, Inc. 2053 400.0 400.0 — 6.53% Series Evergy Kansas South, Inc. 2037 175.0 175.0 — 6.64% Series Evergy Kansas South, Inc. 2038 100.0 100.0 — 4.30% Series Evergy Kansas South, Inc. 2044 250.0 250.0 — 2.25% Series Evergy Metro, Inc. 2030 400.0 — 400.0 4.95% Series Evergy Metro, Inc. 2033 300.0 — 300.0 4.125% Series Evergy Metro, Inc. 2049 400.0 — 400.0 5.15% Series Evergy Missouri West, Inc. 2027 300.0 — — 3.75% Series Evergy Missouri West, Inc. 2032 250.0 — — Pollution Control Bonds 3.66% Series (a) Evergy Kansas Central, Inc. 2032 45.0 45.0 — 3.66% Series (a) Evergy Kansas Central, Inc. 2032 30.5 30.5 — 3.66% Series (a) Evergy Kansas South, Inc. 2027 21.9 21.9 — 2.50% Series Evergy Kansas South, Inc. 2031 50.0 50.0 — 3.66% Series (a) Evergy Kansas South, Inc. 2032 14.5 14.5 — 3.66% Series (a) Evergy Kansas South, Inc. 2032 10.0 10.0 — 3.83% Series 2007A and 2007B (a) Evergy Metro, Inc. 2035 146.5 — 146.5 3.50% EIRR Bonds Evergy Metro, Inc. 2038 23.4 — 23.4 4.30% EIRR Bonds Evergy Metro, Inc. 2045 79.5 — 79.5 Senior Notes 3.65% Series (b) Evergy Metro, Inc. 2025 350.0 — 350.0 6.05% Series (5.78% rate) (b)(c) Evergy Metro, Inc. 2035 250.0 — 250.0 5.30% Series (b) Evergy Metro, Inc. 2041 400.0 — 400.0 4.20% Series (b) Evergy Metro, Inc. 2047 300.0 — 300.0 4.20% Series (b) Evergy Metro, Inc. 2048 300.0 — 300.0 3.49% Series A (d) Evergy Missouri West, Inc. 2025 36.0 — — 4.06% Series B (d) Evergy Missouri West, Inc. 2033 60.0 — — 4.74% Series C (d) Evergy Missouri West, Inc. 2043 150.0 — — 2.86% Series A (d) Evergy Missouri West, Inc. 2031 350.0 — — 3.01% Series B (d) Evergy Missouri West, Inc. 2033 75.0 — — 3.21% Series C (d) Evergy Missouri West, Inc. 2036 75.0 — — 2.45% Series Evergy, Inc. 2024 800.0 — — 2.90% Series (3.77% rate) (c) Evergy, Inc. 2029 800.0 — — Convertible Notes 4.50% Convertible Notes Evergy, Inc. 2027 1,400.0 — — Fair value adjustment (e) 87.0 — — Current maturities (f) (800.0) — — Unamortized debt discount and debt issuance costs (106.0) (46.5) (25.0) Total excluding current maturities (g) $ 11,053.3 $ 4,580.4 $ 2,924.4 (a) Variable rate. The bondholders of these tax-exempt bonds are permitted to tender the tax-exempt bonds to the issuer for purchase and, if tendered, the issuer is obligated to purchase any such bonds that cannot be remarketed to other investors. These tax-exempt bonds are classified as long-term debt due to the issuer's intent and ability to utilize such borrowings as long-term financing. (b) Effectively secured pursuant to the General Mortgage Indenture and Deed of Trust dated as of December 1, 1986, as supplemented (Evergy Metro Mortgage Indenture) through the issuance of collateral mortgage bonds to the trustee in 2019. (c) Rate after amortizing gains/losses recognized in OCI on settlements of interest rate hedging instruments. (d) Unconditionally guaranteed by Evergy, Inc. (e) Represents the fair value adjustments recorded at Evergy consolidated related to the long-term debt of Evergy Metro and Evergy Missouri West in connection with purchase accounting for the merger that created Evergy. This amount is not part of future principal payments and will amortize over the remaining life of the associated debt instruments. (f) Evergy's current maturities total as of December 31, 2024, includes ($0.5) million of fair value adjustments recorded in connection with purchase accounting for the merger that created Evergy. Evergy's current maturities total as of December 31, 2023, included no fair value adjustments recorded in connection with purchase accounting for the merger. (g) As of December 31, 2024 and 2023, does not include $50.0 million and $21.9 million of secured Series 2005 Environmental Improvement Revenue Refunding (EIRR) bonds because the bonds were repurchased in September 2015 and are held by Evergy Metro.
Schedule of Maturities of Long-Term Debt	Evergy's, Evergy Kansas Central's and Evergy Metro's long-term debt maturities for the next five years are detailed in the following table. 2025 2026 2027 2028 2029 (millions) Evergy $ 652.2 $ 367.0 $ 2,039.8 $ 18.8 $ 819.8 Evergy Kansas Central 250.0 350.0 321.9 — — Evergy Metro 350.0 — — — —

Derivative Instruments (Tables)

Derivative Instruments (Tables)	12 Months Ended
	Dec. 31, 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. December 31 Non-hedging derivatives Notional volume unit of measure 2024 2023 Evergy (millions) Commodity contracts Power MWhs 51.3 52.9 Natural gas MMBtu 598.7 559.9 Evergy Kansas Central Commodity contracts Power MWhs 31.3 32.1 Natural gas MMBtu 598.7 558.7 Evergy Metro Commodity contracts Power MWhs 15.3 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. December 31 Evergy 2024 2023 Non-hedging derivatives Balance sheet location Commodity contracts (millions) Power Other assets - current $ 24.6 $ 23.2 Other assets - long-term 43.8 35.7 Natural gas Other assets - current 16.9 68.1 Other assets - long-term 2.1 6.0 Total derivative assets $ 87.4 $ 133.0 Commodity contracts Power Other liabilities - current $ 14.2 $ 21.0 Other liabilities - long-term 41.5 32.9 Natural gas Other liabilities - current 17.9 68.1 Other liabilities - long-term 2.1 6.8 Total derivative liabilities $ 75.7 $ 128.8 December 31 Evergy Kansas Central 2024 2023 Non-hedging derivatives Balance sheet location Commodity contracts (millions) Power Other assets - current $ 11.3 $ 18.3 Other assets - long-term 43.8 35.7 Natural gas Other assets - current 16.9 68.1 Other assets - long-term 2.1 6.0 Total derivative assets $ 74.1 $ 128.1 Commodity contracts Power Other liabilities - current $ 11.5 $ 14.3 Other liabilities - long-term 41.5 32.9 Natural gas Other liabilities - current 17.9 67.0 Other liabilities - long-term 2.1 6.8 Total derivative liabilities $ 73.0 $ 121.0 December 31 Evergy Metro 2024 2023 Non-hedging derivatives Balance sheet location Commodity contracts (millions) Power Other assets - current $ 10.1 $ 2.1 Total derivative assets $ 10.1 $ 2.1 Commodity contracts Power Other liabilities - current $ 2.0 $ 5.7 Total derivative liabilities $ 2.0 $ 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. December 31, 2024 Evergy Evergy Kansas Central Evergy Metro Derivative Assets (millions) Current Gross amounts recognized $ 41.5 $ 28.2 $ 10.1 Gross amounts offset (28.4) (25.7) (2.0) Net amounts presented in other assets - current $ 13.1 $ 2.5 $ 8.1 Long-Term Gross amounts recognized $ 45.9 $ 45.9 $ — Gross amounts offset (12.0) (12.0) — Net amounts presented in other assets - long-term $ 33.9 $ 33.9 $ — Derivative Liabilities Current Gross amounts recognized $ 32.1 $ 29.4 $ 2.0 Gross amounts offset (26.1) (23.4) (2.0) Net amounts presented in other liabilities - current $ 6.0 $ 6.0 $ — Long-Term Gross amounts recognized $ 43.6 $ 43.6 $ — Gross amounts offset (3.8) (3.8) — Net amounts presented in other liabilities - long-term $ 39.8 $ 39.8 $ — 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. Location of gain (loss) Contract type 2024 2023 2022 Evergy (millions) Operating revenues Commodity $ 23.6 $ 22.9 $ 84.6 Total $ 23.6 $ 22.9 $ 84.6 Evergy Kansas Central Operating revenues Commodity $ 23.6 $ 22.9 $ 84.6 Total $ 23.6 $ 22.9 $ 84.6

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	12 Months Ended
	Dec. 31, 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. December 31, 2024 December 31, 2023 Book Value Fair Value Book Value Fair Value Long-term debt (a) (millions) Evergy (b) $ 12,460.9 $ 11,535.0 $ 11,853.3 $ 11,044.9 Evergy Kansas Central 4,583.5 4,031.7 4,580.4 4,176.6 Evergy Metro 3,223.4 2,966.3 2,924.4 2,738.8 (a) Includes current maturities. (b) Book value as of December 31, 2024 and 2023, includes $81.7 million and $87.0 million, respectively, of fair value adjustments recorded in connection with purchase accounting for the merger that created Evergy, 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 December 31, 2024 Netting Level 1 Level 2 Level 3 NAV Evergy Kansas Central (millions) Assets Nuclear decommissioning trust (a) Domestic equity funds $ 142.9 $ — $ 134.0 $ — $ — $ 8.9 International equity funds 81.6 — 81.6 — — — Core bond fund 66.7 — 66.7 — — — High-yield bond fund 33.7 — 33.7 — — — Emerging markets bond fund 20.6 — 20.6 — — — Alternative investments fund 45.6 — — — — 45.6 Real estate securities fund 16.3 — — — — 16.3 Cash equivalents 0.5 — 0.5 — — — Total nuclear decommissioning trust 407.9 — 337.1 — — 70.8 Rabbi trust Fixed income funds 14.6 — 14.6 — — — Equity funds 6.9 — 6.9 — — — Combination debt/equity/other fund 1.7 — 1.7 — — — Cash equivalents 0.2 — 0.2 — — — Total rabbi trust 23.4 — 23.4 — — — Derivative instruments - commodity contracts (b) Power 35.1 (20.0) 11.7 40.5 2.9 — Natural gas 1.3 (17.7) 18.9 0.1 — — Total derivative assets 36.4 (37.7) 30.6 40.6 2.9 — Total assets 467.7 (37.7) 391.1 40.6 2.9 70.8 Liabilities Derivative instruments - commodity contracts (b) Power 43.5 (9.5) 4.5 44.2 4.3 — Natural gas 2.3 (17.7) 19.9 0.1 — — Total derivative liabilities 45.8 (27.2) 24.4 44.3 4.3 — Total liabilities $ 45.8 $ (27.2) $ 24.4 $ 44.3 $ 4.3 $ — Evergy Metro Assets Nuclear decommissioning trust (a) Equity securities $ 368.8 $ — $ 368.8 $ — $ — $ — Debt securities U.S. Treasury 55.3 — 55.3 — — — State and local obligations 2.1 — — 2.1 — — Corporate bonds 42.7 — — 42.7 — — Cash equivalents 3.0 — 3.0 — — — Total nuclear decommissioning trust 471.9 — 427.1 44.8 — — Self-insured health plan trust (c) Equity securities 2.3 — 2.3 — — — Debt securities 14.3 — 3.2 11.1 — — Cash and cash equivalents 2.3 — 2.3 — — — Total self-insured health plan trust 18.9 — 7.8 11.1 — — Derivative instruments - commodity contracts (b) Power 8.1 (2.0) — — 10.1 — Total derivative assets 8.1 (2.0) — — 10.1 — Total assets 498.9 (2.0) 434.9 55.9 10.1 — Liabilities Derivative instruments - commodity contracts (b) Power — (2.0) — — 2.0 — Total derivative liabilities — (2.0) — — 2.0 — Total liabilities $ — $ (2.0) $ — $ — $ 2.0 $ — Description December 31, 2024 Netting Level 1 Level 2 Level 3 NAV Other Evergy (millions) Assets Rabbi trusts Core bond fund $ 8.0 $ — $ 8.0 $ — $ — $ — Total rabbi trusts 8.0 — 8.0 — — — Derivative instruments - commodity contracts (b) Power 2.5 (0.7) — — 3.2 — Total derivative assets 2.5 (0.7) — — 3.2 — Total assets 10.5 (0.7) 8.0 — 3.2 — 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) $ 879.8 $ — $ 764.2 $ 44.8 $ — $ 70.8 Rabbi trusts 31.4 — 31.4 — — — Self-insured health plan trust (c) 18.9 — 7.8 11.1 — — Derivative instruments - commodity contracts (b) Power 45.7 (22.7) 11.7 40.5 16.2 — Natural gas 1.3 (17.7) 18.9 0.1 — — Total derivative assets 47.0 (40.4) 30.6 40.6 16.2 — Total assets 977.1 (40.4) 834.0 96.5 16.2 70.8 Liabilities Derivative instruments - commodity contracts (b) Power 43.5 (12.2) 4.5 44.2 7.0 — Natural gas 2.3 (17.7) 19.9 0.1 — — Total derivative liabilities 45.8 (29.9) 24.4 44.3 7.0 — Total liabilities $ 45.8 $ (29.9) $ 24.4 $ 44.3 $ 7.0 $ — 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. December 31, 2024 December 31, 2023 December 31, 2024 Fair Unfunded Fair Unfunded Redemption Length of Value Commitments Value Commitments Frequency Settlement Evergy Kansas Central (millions) Nuclear decommissioning trust: Domestic equity funds $ 8.9 $ 1.3 $ 9.8 $ 1.4 (a) (a) Alternative investments fund (b) 45.6 — 37.9 — Quarterly 65 days Real estate securities fund (b) 16.3 — 17.2 — Quarterly 65 days Total Evergy investments at NAV $ 70.8 $ 1.3 $ 64.9 $ 1.4 (a) This investment is in four 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. 2024 2023 2022 Evergy (millions) Nuclear decommissioning trust - equity securities $ 89.3 $ 80.4 (123.3) Nuclear decommissioning trust - debt securities (1.1) 2.7 (15.2) Rabbi trusts - equity securities 0.4 2.4 (7.1) Total $ 88.6 $ 85.5 $ (145.6) Evergy Kansas Central Nuclear decommissioning trust - equity securities $ 31.1 $ 28.3 (62.8) Rabbi trust - equity securities 0.4 2.0 (5.4) Total $ 31.5 $ 30.3 $ (68.2) Evergy Metro Nuclear decommissioning trust - equity securities $ 58.2 $ 52.1 (60.5) Nuclear decommissioning trust - debt securities (1.1) 2.7 (15.2) Total $ 57.1 $ 54.8 $ (75.7)

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Tables)	12 Months Ended
	Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Schedule of Contractual Obligation	The Evergy Companies' contractual commitments for fuel and power as of December 31, 2024 are detailed in the following tables. See Notes 9, 12 and 21 for information regarding pension, long-term debt and lease commitments, respectively. Evergy 2025 2026 2027 2028 2029 After 2029 Total Purchase commitments (millions) Fuel $ 247.3 $ 228.3 $ 120.7 $ 111.5 $ 109.6 $ 141.0 $ 958.4 Power 58.4 58.4 58.4 57.1 59.9 118.4 410.6 Total fuel and power commitments $ 305.7 $ 286.7 $ 179.1 $ 168.6 $ 169.5 $ 259.4 $ 1,369.0 Evergy Kansas Central 2025 2026 2027 2028 2029 After 2029 Total Purchase commitments (millions) Fuel $ 144.1 $ 132.2 $ 63.8 $ 59.0 $ 52.8 $ 70.6 $ 522.5 Power 0.9 0.9 0.9 0.9 0.9 0.4 4.9 Total fuel and power commitments $ 145.0 $ 133.1 $ 64.7 $ 59.9 $ 53.7 $ 71.0 $ 527.4 Evergy Metro 2025 2026 2027 2028 2029 After 2029 Total Purchase commitments (millions) Fuel $ 88.2 $ 83.6 $ 49.2 $ 50.5 $ 56.8 $ 70.4 $ 398.7 Power 29.2 29.2 29.2 29.2 29.2 79.4 225.4 Total fuel and power commitments $ 117.4 $ 112.8 $ 78.4 $ 79.7 $ 86.0 $ 149.8 $ 624.1

RELATED PARTY TRANSACTIONS AN_2

RELATED PARTY TRANSACTIONS AND RELATIONSHIPS (Tables)	12 Months Ended
	Dec. 31, 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. 2024 2023 2022 (millions) Evergy Kansas Central billings to Evergy Missouri West $ 29.6 $ 33.0 $ 32.7 Evergy Metro billings to Evergy Missouri West 111.3 124.6 140.5 Evergy Kansas Central billings to Evergy Metro 46.9 48.4 33.1 Evergy Metro billings to Evergy Kansas Central 144.6 132.9 238.4 The following table summarizes Evergy Kansas Central's and Evergy Metro's related party net receivables and payables. December 31 2024 2023 Evergy Kansas Central (millions) Net payable to Evergy $ (13.4) $ (274.5) Net payable to Evergy Metro (22.9) (19.6) Net receivable from Evergy Missouri West 23.0 11.3 Evergy Metro Net receivable from Evergy $ 16.8 $ 15.9 Net receivable from Evergy Kansas Central 22.9 19.6 Net receivable from Evergy Missouri West 86.2 91.9 December 31 2024 2023 Evergy Kansas Central (millions) Income taxes receivable from Evergy $ 11.4 $ 11.5 Evergy Metro Income taxes payable to Evergy $ (10.0) $ (6.8)

VARIABLE INTEREST ENTITIES (Tab

VARIABLE INTEREST ENTITIES (Tables)	12 Months Ended
	Dec. 31, 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 December 31, 2024. There was no impact on Evergy's consolidated balance sheet as of December 31, 2023. December 31 2024 Evergy (millions) Current assets Regulatory assets $ 15.9 Other 5.4 Other assets Regulatory assets 294.5 Other 1.7 Current liabilities Current maturities of long-term debt 16.2 Accrued interest 1.3 Long-term liabilities Long-term debt, net 295.7

TAXES (Tables)

TAXES (Tables)	12 Months Ended
	Dec. 31, 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 2024 2023 2022 Current income taxes (millions) Federal $ 30.9 $ 25.3 $ 31.9 State 7.7 6.9 8.3 Total 38.6 32.2 40.2 Deferred income taxes Federal 30.0 10.2 17.2 State (31.4) (21.7) (3.4) Total (1.4) (11.5) 13.8 Investment tax credit Deferral — 2.2 — Amortization (7.2) (7.3) (6.5) Total (7.2) (5.1) (6.5) Income tax expense $ 30.0 $ 15.6 $ 47.5 Evergy Kansas Central 2024 2023 2022 Current income taxes (millions) Federal $ 6.2 $ 27.8 $ 95.8 State 4.7 4.7 3.9 Total 10.9 32.5 99.7 Deferred income taxes Federal 16.4 (29.3) (78.7) State (11.3) (7.4) (4.6) Total 5.1 (36.7) (83.3) Investment tax credit Deferral — 2.2 — Amortization (3.8) (3.9) (4.1) Total (3.8) (1.7) (4.1) Income tax expense (benefit) $ 12.2 $ (5.9) $ 12.3 Evergy Metro 2024 2023 2022 Current income taxes (millions) Federal $ 37.7 $ 13.2 $ (21.9) State 3.6 3.7 4.1 Total 41.3 16.9 (17.8) Deferred income taxes Federal 15.8 33.6 69.9 State (13.0) (7.8) 0.6 Total 2.8 25.8 70.5 Investment tax credit amortization (3.2) (3.5) (2.4) Income tax expense $ 40.9 $ 39.2 $ 50.3
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 2024 2023 2022 Federal statutory income tax 21.0 % 21.0 % 21.0 % COLI policies (1.3) (1.9) (1.2) State income taxes (2.2) (1.9) 0.3 Flow through depreciation for plant-related differences (6.0) (8.0) (8.4) Federal tax credits (7.0) (6.2) (4.0) Non-controlling interest (0.3) (0.3) (0.3) AFUDC equity (0.4) (0.3) (0.6) Amortization of federal investment tax credits (0.6) (0.7) (0.6) Valuation allowance — 0.4 — Stock compensation — — (0.2) Officer compensation limitation 0.2 0.3 0.3 Other (0.1) (0.4) (0.5) Effective income tax rate 3.3 % 2.0 % 5.8 % Evergy Kansas Central 2024 2023 2022 Federal statutory income tax 21.0 % 21.0 % 21.0 % COLI policies (2.0) (3.6) (2.2) State income taxes (1.1) (1.0) (0.4) Flow through depreciation for plant-related differences (3.6) (5.0) (6.6) Federal tax credits (10.4) (11.7) (7.2) Non-controlling interest (0.4) (0.7) (0.6) AFUDC equity (0.5) (0.4) (0.4) Amortization of federal investment tax credits (0.4) (0.6) (0.5) Valuation allowance — 0.7 — Stock compensation — — (0.2) Officer compensation limitation — — 0.1 Other (0.5) (0.3) (0.2) Effective income tax rate 2.1 % (1.6) % 2.8 % Evergy Metro 2024 2023 2022 Federal statutory income tax 21.0 % 21.0 % 21.0 % COLI policies (0.1) (0.1) (0.1) State income taxes (2.0) (0.9) 0.9 Flow through depreciation for plant-related differences (5.6) (7.6) (7.2) Federal tax credits (1.0) (0.7) (0.1) AFUDC equity (0.4) (0.3) (0.7) Amortization of federal investment tax credits (0.9) (0.9) (0.6) Stock compensation 0.2 0.1 (0.2) Officer compensation limitation 0.4 0.5 0.5 Other (0.4) (0.5) (1.1) Effective income tax rate 11.2 % 10.6 % 12.4 %
Schedule of Deferred Income Tax Assets and Liabilities	The tax effects of major temporary differences resulting in deferred income tax assets (liabilities) in the consolidated balance sheets is in the following table. December 31 2024 2023 Evergy Evergy Kansas Central Evergy Metro Evergy Evergy Kansas Central Evergy Metro Deferred tax assets: (millions) Tax credit carryforward $ 393.2 $ 296.5 $ 95.3 $ 288.9 $ 242.7 $ 43.6 Income taxes refundable to customers, net 308.2 160.5 115.7 289.4 149.1 103.6 Deferred employee benefit costs 98.4 42.4 61.6 101.5 52.1 58.2 Net operating loss carryforward 4.4 — — 22.5 — — Deferred state income taxes 132.2 95.7 32.8 141.0 99.2 36.2 Accrued liabilities 198.0 92.6 73.8 185.9 85.9 66.8 Other regulatory liabilities 92.4 62.8 8.0 132.0 86.4 17.1 Other 99.6 46.4 25.8 121.7 64.2 25.1 Total deferred tax assets before 1,326.4 796.9 413.0 1,282.9 779.6 350.6 Valuation allowances (6.9) (2.7) — (14.8) (2.7) — Total deferred tax assets, net 1,319.5 794.2 413.0 1,268.1 776.9 350.6 Deferred tax liabilities: Plant-related (2,844.9) (1,407.6) (1,030.5) (2,818.4) (1,397.1) (1,030.2) Deferred employee benefit costs (0.5) — — (11.1) (10.6) — ARO regulatory assets (177.2) (76.4) (68.4) (159.1) (67.2) (60.3) Acquisition premium (34.2) (34.2) — (37.4) (37.4) — Other regulatory assets (200.6) (31.3) (39.5) (231.3) (43.6) (34.1) Other (97.8) (50.3) (29.9) (108.7) (65.2) (23.2) Total deferred tax liabilities (3,355.2) (1,599.8) (1,168.3) (3,366.0) (1,621.1) (1,147.8) Net deferred income tax liabilities $ (2,035.7) $ (805.6) $ (755.3) $ (2,097.9) $ (844.2) $ (797.2)
Summary of Related Tax Benefit Amounts	The year of origin of Evergy's, Evergy Kansas Central's and Evergy Metro's related tax benefit amounts for federal tax credit carryforwards as of December 31, 2024 are detailed in the following table. Amount of Benefit Year of Origin Evergy Evergy Kansas Central Evergy Metro (millions) 2007 $ 0.1 $ — $ — 2018 2.1 2.0 0.1 2019 37.7 30.8 6.7 2020 35.9 28.5 7.2 2021 31.7 28.1 3.5 2022 34.7 31.7 2.6 2023 49.8 45.3 4.3 2024 196.3 125.2 70.9 $ 388.3 $ 291.6 $ 95.3

LEASES (Tables)

LEASES (Tables)	12 Months Ended
	Dec. 31, 2024
Leases [Abstract]
Schedule of Lease Expense	The Evergy Companies' lease expense is detailed in the following tables. Evergy 2024 2023 2022 Finance lease costs (millions) Amortization of right-of-use assets $ 11.1 $ 6.1 $ 5.3 Interest on lease liabilities 2.5 2.3 2.4 Operating lease costs 24.0 20.5 21.9 Short-term lease costs 3.5 4.0 4.9 Variable lease costs for renewable purchase power agreements 210.3 266.5 318.0 Total lease costs $ 251.4 $ 299.4 $ 352.5 Evergy Kansas Central 2024 2023 2022 Finance lease costs (millions) Amortization of right-of-use assets $ 8.3 $ 5.5 $ 4.7 Interest on lease liabilities 2.2 2.2 2.2 Operating lease costs 12.3 10.0 12.1 Short-term lease costs 1.2 1.5 1.4 Variable lease costs for renewable purchase power agreements 71.0 122.6 155.2 Total lease costs $ 95.0 $ 141.8 $ 175.6 Evergy Metro 2024 2023 2022 Finance lease costs (millions) Amortization of right-of-use assets $ 2.3 $ 0.5 $ 0.5 Interest on lease liabilities 0.2 0.1 0.1 Operating lease costs 9.5 8.6 8.7 Short-term lease costs 1.9 2.2 3.3 Variable lease costs for renewable purchase power agreements 103.9 107.5 122.6 Total lease costs $ 117.8 $ 118.9 $ 135.2
SupplementalCashFlowLeaseInformation	Supplemental cash flow information related to the Evergy Companies' leases is detailed in the following tables. Evergy 2024 2023 2022 Cash paid for amounts included in the measurement of lease liabilities: (millions) Operating cash flows from operating leases $ 24.9 $ 20.1 $ 21.1 Operating cash flows from finance leases 2.5 2.3 2.4 Financing cash flows from finance leases 11.7 6.6 5.9 Right-of-use assets obtained in exchange for new finance lease liabilities 17.0 11.9 7.0 Right-of-use assets obtained in exchange for new operating lease liabilities 7.2 20.1 12.2 Evergy Kansas Central 2024 2023 2022 Cash paid for amounts included in the measurement of lease liabilities: (millions) Operating cash flows from operating leases $ 12.3 $ 9.9 $ 11.4 Operating cash flows from finance leases 2.2 2.1 2.2 Financing cash flows from finance leases 8.7 5.7 5.1 Right-of-use assets obtained in exchange for new finance lease liabilities 13.2 10.2 7.0 Right-of-use assets obtained in exchange for new operating lease liabilities 5.2 9.2 12.0 Evergy Metro 2024 2023 2022 Cash paid for amounts included in the measurement of lease liabilities: (millions) Operating cash flows from operating leases $ 11.7 $ 9.7 $ 9.3 Operating cash flows from finance leases 0.2 0.1 0.1 Financing cash flows from finance leases 2.5 0.8 0.7 Right-of-use assets obtained in exchange for new finance lease liabilities 2.6 1.7 — Right-of-use assets obtained in exchange for new operating lease liabilities 1.9 9.9 0.2
Schedule of Other Pertinent Lease Information	Other pertinent information related to the Evergy Companies' leases is detailed in the following tables. Evergy 2024 2023 (dollars in millions) Right-of-use assets under finance leases included in property, plant and equipment, net, on the consolidated balance sheets $ 356.9 $ 323.7 Right-of-use assets under operating leases included in other assets on the consolidated balance sheets 58.3 71.1 Weighted-average remaining lease term (years) Finance leases 8.3 11.0 Operating leases 5.4 5.9 Weighted average discount rate Finance leases 5.3 % 5.5 % Operating leases 4.4 % 3.2 % Evergy Kansas Central 2024 2023 (dollars in millions) Right-of-use assets under finance leases included in property, plant and equipment, net, on the consolidated balance sheets $ 84.5 $ 63.5 Right-of-use assets under operating leases included in other assets on the consolidated balance sheets 17.4 22.8 Weighted-average remaining lease term (years) Finance leases 9.1 11.4 Operating leases 2.7 3.3 Weighted average discount rate Finance leases 5.3 % 5.6 % Operating leases 3.8 % 4.1 % Evergy Metro 2024 2023 (dollars in millions) Right-of-use assets under finance leases included in property, plant and equipment, net, on the consolidated balance sheets $ 13.0 $ 2.9 Right-of-use assets under operating leases included in other assets on the consolidated balance sheets 29.3 35.5 Weighted-average remaining lease term (years) Finance leases 5.3 6.0 Operating leases 6.6 7.2 Weighted average discount rate Finance leases 5.2 % 5.8 % Operating leases 5.0 % 2.5 %
Schedule of Payments for Finance Leases	Payments and other supplemental information for finance leases as of December 31, 2024, are detailed in the following table. Evergy Evergy Kansas Central Evergy Metro (millions) 2025 $ 16.4 $ 12.5 $ 2.9 2026 15.6 11.8 2.8 2027 15.2 11.4 2.8 2028 14.2 10.8 2.6 2029 10.3 8.4 1.4 After 2029 37.1 34.8 1.8 Total finance lease payments 108.8 89.7 14.3 Amounts representing imputed interest (20.5) (18.9) (1.3) Present value of lease payments 88.3 70.8 13.0 Less: current portion (13.3) (9.8) (2.6) Total long-term obligations under finance leases $ 75.0 $ 61.0 $ 10.4
Schedule of Lease Payments for Operating Leases	Lease payments and other supplemental information for operating leases as of December 31, 2024, are detailed in the following table. Evergy Evergy Kansas Central Evergy Metro (millions) 2025 $ 18.3 $ 8.9 $ 9.1 2026 13.7 5.8 7.5 2027 11.1 4.3 6.5 2028 8.0 2.4 5.4 2029 5.2 0.3 4.9 After 2029 13.3 — 13.3 Total operating lease payments 69.6 21.7 46.7 Amounts representing imputed interest (11.9) (4.6) (7.1) Present value of lease payments 57.7 17.1 39.6 Less: current portion (14.6) (6.9) (7.4) Total long-term obligations under operating leases $ 43.1 $ 10.2 $ 32.2

Segments and Related Informat_2

Segments and Related Information (Tables)	12 Months Ended
	Dec. 31, 2024
Segment Reporting [Abstract]
Segment Financial Information [Table Text Block]	This segment information is detailed in the following table. 2024 2023 2022 (millions) OPERATING REVENUES $ 5,847.3 $ 5,508.2 $ 5,859.1 Less: Fuel and purchased power 1,479.9 1,494.8 1,821.2 SPP network transmission costs 370.9 302.6 323.0 Operating and maintenance: Operations and customer 616.3 594.8 656.9 Support 143.6 133.5 143.2 Other segment items, including benefit costs (a) 202.0 217.0 285.2 Depreciation and amortization 1,114.0 1,076.5 929.4 Taxes other than income tax 452.6 406.6 398.1 Sibley Unit 3 impairment loss and other regulatory disallowances — — 34.9 Interest expense 563.1 525.8 404.0 Income tax expense 30.0 15.6 47.5 Net income attributable to noncontrolling interests 12.3 12.3 12.3 Plus: Total other income (expense), net 3.1 (4.8) (58.0) Equity in earnings of equity method investees, net of income taxes 7.8 7.4 7.3 NET INCOME ATTRIBUTABLE TO EVERGY, INC. $ 873.5 $ 731.3 $ 752.7 (a) Other segment items include benefits expense associated with Operations, Customer and Support employees, regulatory amortization expense, expense associated with energy efficiency programs and bad debt expense, among other items.

SUMMARY OF SIGNIFICANT ACCOUN_4

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Organization (Details) customer in Millions, $ in Millions		1 Months Ended	12 Months Ended
	Dec. 31, 2022 USD ($)	Apr. 30, 2024 USD ($) MW	Dec. 31, 2024 customer subsidiary kilovolt_line mi MW shares	Dec. 31, 2022 USD ($)	Sep. 30, 2024 MW
Summary Of Accounting Policies [Line Items]
Owned generating capacity and renewable purchased power			15,800
Number of customers served | customer			1.7
Antidilutive securities excluded from computation of earnings per share, amount | shares			0
Asset Impairment Charges | $				$ 26.7
PISA deferral percentage			90%
Potential recovery percent of new gas fired generating unit			100%
Plant to be constructed 1
Summary Of Accounting Policies [Line Items]
ApproximateMWNameplateCapacity			705
Kansas Sky solar plant to be constructed
Summary Of Accounting Policies [Line Items]
ApproximateMWNameplateCapacity			159
2024 Natural Gas Plant Purchase
Summary Of Accounting Policies [Line Items]
ApproximateMWNameplateCapacity		145
Asset Acquisition, Consideration Transferred | $		$ 60
Jointly owned utility plant, proportionate ownership share		22%
Dogwood costs recovery period		2 years
2024 Sunflower Sky Purchase [Member]
Summary Of Accounting Policies [Line Items]
ApproximateMWNameplateCapacity					65
2024 Foxtrot Purchase [Member]
Summary Of Accounting Policies [Line Items]
ApproximateMWNameplateCapacity					100
Prairie Wind Transmission, LLC
Summary Of Accounting Policies [Line Items]
Transmission line length | mi			108
Transmission line electrical potential | kilovolt_line			345
Evergy Missouri West | Simple cycle natural gas plant to be constructed
Summary Of Accounting Policies [Line Items]
ApproximateMWNameplateCapacity			440
Transource Energy, LLC | Evergy Transmission Company LLC
Summary Of Accounting Policies [Line Items]
Ownership percentage			13.50%
Prairie Wind Transmission, LLC | Evergy Kansas Central
Summary Of Accounting Policies [Line Items]
Ownership percentage			50%
Early-Stage Energy Solution Company
Summary Of Accounting Policies [Line Items]
Equity investment loss, net of derivative gain | $	$ 16.3
Evergy Kansas South Inc | Evergy Kansas Central
Summary Of Accounting Policies [Line Items]
Number of active wholly owned subsidiaries | subsidiary			1
AEP Transmission Holding Company, LLC | Transource Energy, LLC
Summary Of Accounting Policies [Line Items]
Ownership interest			86.50%

SUMMARY OF SIGNIFICANT ACCOUN_5

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents	$ 22	$ 27.7
Other	6.2	0
Other	1.7	0
Total cash, cash equivalents and restricted cash	29.9	$ 27.7	$ 25.2	$ 26.2
Variable Interest Entities
Restricted Cash and Cash Equivalents Items [Line Items]
Other	5.4
Other	$ 1.7

SUMMARY OF SIGNIFICANT ACCOUN_6

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fuel Inventory and Supplies (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Inventory [Line Items]
Fuel inventory	$ 264.2	$ 257.3
Supplies	603.2	518.9
Fuel inventory and supplies	867.4	776.2
Evergy Kansas Central
Inventory [Line Items]
Fuel inventory	154.2	138.6
Supplies	318.3	273.3
Fuel inventory and supplies	472.5	411.9
Evergy Metro
Inventory [Line Items]
Fuel inventory	71.9	81.5
Supplies	211.9	183.1
Fuel inventory and supplies	$ 283.8	$ 264.6

SUMMARY OF SIGNIFICANT ACCOUN_7

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Allowance For Funds Used During Construction (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
AFUDC borrowed funds	$ 41.8	$ 39.3	$ 15.8
AFUDC equity funds	19.6	10.8	22.5
Total	61.4	50.1	38.3
Evergy Kansas Central
Property, Plant and Equipment [Line Items]
AFUDC borrowed funds	24.7	22.2	6.9
AFUDC equity funds	12.5	6.4	8.5
Total	$ 37.2	$ 28.6	$ 15.4
Public utilities, allowance for funds used during construction, rate	5.20%	5.70%	3.10%
Evergy Metro
Property, Plant and Equipment [Line Items]
AFUDC borrowed funds	$ 11.6	$ 11.8	$ 6.5
AFUDC equity funds	7.1	4.4	14.2
Total	$ 18.7	$ 16.2	$ 20.7
Public utilities, allowance for funds used during construction, rate	5.80%	5.20%	5.70%
Evergy Missouri West
Property, Plant and Equipment [Line Items]
Public utilities, allowance for funds used during construction, rate	5.10%	5.60%	2.30%

SUMMARY OF SIGNIFICANT ACCOUN_8

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property, Plant and Equipment (Details)	12 Months Ended
	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Depreciation rates average	3%
Minimum
Property, Plant and Equipment [Line Items]
Generating facilities	5 years
Transmission facilities	27 years
Distribution facilities	10 years
Other	5 years
Maximum
Property, Plant and Equipment [Line Items]
Generating facilities	66 years
Transmission facilities	66 years
Distribution facilities	63 years
Other	57 years
Evergy Kansas Central | Minimum
Property, Plant and Equipment [Line Items]
Generating facilities	5 years
Transmission facilities	29 years
Distribution facilities	13 years
Other	5 years
Evergy Kansas Central | Maximum
Property, Plant and Equipment [Line Items]
Generating facilities	66 years
Transmission facilities	63 years
Distribution facilities	61 years
Other	57 years
Evergy Metro | Minimum
Property, Plant and Equipment [Line Items]
Generating facilities	7 years
Transmission facilities	27 years
Distribution facilities	10 years
Other	8 years
Evergy Metro | Maximum
Property, Plant and Equipment [Line Items]
Generating facilities	58 years
Transmission facilities	64 years
Distribution facilities	54 years
Other	37 years

SUMMARY OF SIGNIFICANT ACCOUN_9

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Corporate-Owned Life Insurance (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Accounting Policies [Abstract]
Cash surrender value of policies	$ 1,322.6	$ 1,349.9
Borrowings against policies	(1,196.2)	(1,221.1)
Corporate-owned life insurance, net	$ 126.4	$ 128.8

SUMMARY OF SIGNIFICANT ACCOU_10

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Other Income (Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Other Income Expense Net [Line Items]
Non-service cost component of net benefit cost	$ (16.6)	$ (51.2)	$ (62.9)
Other	(2.5)	(2.2)	(11.4)
Other expense	(40.4)	(75.1)	(97.3)
Corporate-owned life insurance	(21.3)	(21.7)	(23)
Evergy Kansas Central
Other Income Expense Net [Line Items]
Non-service cost component of net benefit cost	2.1	(17.6)	(17.1)
Other	(0.6)	(0.5)	(0.6)
Other expense	(18.7)	(38.7)	(39.6)
Corporate-owned life insurance	(20.2)	(20.6)	(21.9)
Evergy Metro
Other Income Expense Net [Line Items]
Non-service cost component of net benefit cost	(10.1)	(24.8)	(31)
Other	(1.4)	(1.1)	(1.9)
Other expense	(12.5)	(27)	(33.9)
Corporate-owned life insurance	$ (1)	$ (1.1)	$ (1)

SUMMARY OF SIGNIFICANT ACCOU_11

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income
Net income	$ 885.8	$ 743.6	$ 765
Less: Net income attributable to noncontrolling interests	12.3	12.3	12.3
Net income attributable to Evergy, Inc.	$ 873.5	$ 731.3	$ 752.7
Common Shares Outstanding
Weighted average number of common shares outstanding - basic (in shares)	230.3	230	229.9
Add: effect of dilutive securities (in shares)	0.3	0.5	0.4
Diluted average number of common shares outstanding (in shares)	230.6	230.5	230.3
Basic earnings per common share (in dollars per share)	$ 3.79	$ 3.18	$ 3.27
Diluted EPS (in dollars per share)	$ 3.79	$ 3.17	$ 3.27

SUMMARY OF SIGNIFICANT ACCOU_12

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Antidilutive Securities (Details) - shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	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

SUMMARY OF SIGNIFICANT ACCOU_13

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash paid for (received from):
Interest, net of amount capitalized	$ 538.5	$ 500.9	$ 393.7
Income taxes, net of refunds	38	34.4	21.6
Non-cash investing transactions:
Property, plant and equipment additions (reductions)	277.5	251.3	354.7
Variable Interest Entities
Cash paid for (received from):
Interest of VIEs	13.1	0	0
Evergy Kansas Central
Cash paid for (received from):
Interest, net of amount capitalized	220.6	195.3	170.2
Income taxes, net of refunds	10.7	54.4	79.8
Non-cash investing transactions:
Property, plant and equipment additions (reductions)	158	134.1	203.9
Evergy Metro
Cash paid for (received from):
Interest, net of amount capitalized	145.9	134.3	114.6
Income taxes, net of refunds	38.5	9.8	(15.2)
Non-cash investing transactions:
Property, plant and equipment additions (reductions)	$ 86.3	$ 83.2	$ 125.8

SUMMARY OF SIGNIFICANT ACCOU_14

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	Feb. 26, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Dividends Payable [Line Items]
Dividends declared on common stock (in dollars per share)		$ 2.595	$ 2.48	$ 2.33
Subsequent Event
Dividends Payable [Line Items]
Dividends declared on common stock (in dollars per share)	$ 0.6675
Evergy Kansas Central | Subsequent Event
Dividends Payable [Line Items]
Dividends Payable, Current	$ 50
Evergy Metro | Subsequent Event
Dividends Payable [Line Items]
Dividends Payable, Current	$ 50

REVENUE (Details)

REVENUE (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 5,704.4	$ 5,345.1	$ 5,589.2
Other	142.9	163.1	269.9
OPERATING REVENUES	5,847.3	5,508.2	5,859.1
Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2,995.2	2,645.2	2,983.7
Other	11.9	53.2	72.2
OPERATING REVENUES	3,007.1	2,698.4	3,055.9
Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,764.7	1,780.4	1,774.5
Other	129	108.6	196.1
OPERATING REVENUES	1,893.7	1,889	1,970.6
Residential
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2,186.6	2,036.7	2,168.2
Residential | Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	983.5	821	980.1
Residential | Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	738.8	748.4	746.4
Commercial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,963.7	1,832.4	1,888.5
Commercial | Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	842.7	722.9	822.9
Commercial | Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	776.7	778.9	758.6
Industrial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	682	625.9	686.2
Industrial | Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	448.9	398.5	465.7
Industrial | Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	132.7	130.9	127
Other retail
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	43.3	43.2	(32.1)
Deferral of revenues to regulatory liability for refund to customers for return on investment of retired Sibley Station			68
Other retail | Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	25.2	18.1	17.9
Other retail | Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	10.3	12.7	11.5
Total electric retail
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	4,875.6	4,538.2	4,710.8
Total electric retail | Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2,300.3	1,960.5	2,286.6
Total electric retail | Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,658.5	1,670.9	1,643.5
Wholesale
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	320.5	373.5	509.9
Wholesale | Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	237.2	296.8	389.9
Wholesale | Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	82.6	91.9	111.9
Transmission
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	482.6	403.2	343.7
Transmission | Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	455	385.8	305
Transmission | Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	19.9	14.3	18.2
Industrial steam and other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	25.7	30.2	24.8
Industrial steam and other | Evergy Kansas Central
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2.7	2.1	2.2
Industrial steam and other | Evergy Metro
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 3.7	$ 3.3	$ 0.9

RECEIVABLES (Details)

RECEIVABLES (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables	$ 150	$ 169.4
Allowance for credit losses	(15.7)	(24.2)
Total	245.4	256.9
Evergy Kansas Central
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables	104.9	143.5
Allowance for credit losses	(7.8)	(11.6)
Total	133.1	171.8
Evergy Metro
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables	35.4	35.7
Allowance for credit losses	(5.8)	(7.9)
Total	58.1	55
Customer accounts receivable | Billed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable from subsidiaries	2.7	2.6
Customer accounts receivable | Unbilled
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable from subsidiaries	108.4	109.1
Customer accounts receivable | Unbilled | Evergy Kansas Central
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable from subsidiaries	36	39.9
Customer accounts receivable | Unbilled | Evergy Metro
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable from subsidiaries	$ 28.5	$ 27.2

RECEIVABLES - Narrative (Detail

RECEIVABLES - Narrative (Details) $ in Millions	Dec. 31, 2024 USD ($)
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
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

RECEIVABLES - Allowance for Cre

RECEIVABLES - Allowance for Credit Loses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance January 1	$ 24.2	$ 31.4
Credit loss expense	11.7	15.4
Write-offs	(32.5)	(33.3)
Recoveries of prior write-offs	12.3	10.7
Ending balance December 31	15.7	24.2
Evergy Kansas Central
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance January 1	11.6	16.9
Credit loss expense	6.6	7.7
Write-offs	(15.6)	(17.7)
Recoveries of prior write-offs	5.2	4.7
Ending balance December 31	7.8	11.6
Evergy Metro
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance January 1	7.9	9.3
Credit loss expense	4.5	5
Write-offs	(11.6)	(10.5)
Recoveries of prior write-offs	5	4.1
Ending balance December 31	$ 5.8	$ 7.9

RECEIVABLES - Other Receivables

RECEIVABLES - Other Receivables (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables, contracts with customers	$ 68.9	$ 61.5
Evergy Kansas Central
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables, contracts with customers	65.3	59.9
Evergy Metro
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables, contracts with customers	$ 2.6	$ 0.8

RECEIVABLES - Pledged as Collat

RECEIVABLES - Pledged as Collateral (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable pledged as collateral	$ 401	$ 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	$ 136	$ 126

RATE MATTERS AND REGULATION - N

RATE MATTERS AND REGULATION - Narrative (Details) $ in Millions	1 Months Ended				12 Months Ended
	Jan. 31, 2025 USD ($)	Oct. 31, 2024 USD ($)	May 31, 2024 USD ($)	Feb. 28, 2024 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Regulatory Proceedings [Line Items]
Interest rate					5.06%
Regulatory liabilities					$ 2,845.8	$ 2,725.5
Regulatory assets					1,900.2	2,087.4
TFR Refund
Regulatory Proceedings [Line Items]
Regulatory liabilities					7.1	11.2
Fuel recovery mechanisms
Regulatory Proceedings [Line Items]
Regulatory liabilities					$ 21.5	34.7
Regulatory Liability, Amortization Period					1 year
February 2021 winter weather event
Regulatory Proceedings [Line Items]
Regulatory assets					$ 8.3	403.5
Fuel recovery mechanisms
Regulatory Proceedings [Line Items]
Regulatory Asset, Amortization Period					1 year
Regulatory assets					$ 25.7	101.3
Evergy Kansas Central
Regulatory Proceedings [Line Items]
Regulatory liabilities					1,552.4	1,536.5
Regulatory assets					526.3	632.9
Evergy Kansas Central | TFR Refund
Regulatory Proceedings [Line Items]
Regulatory liabilities					7.1	11.2
Evergy Kansas Central | Fuel recovery mechanisms
Regulatory Proceedings [Line Items]
Regulatory liabilities					0	34.7
Evergy Kansas Central | February 2021 winter weather event
Regulatory Proceedings [Line Items]
Regulatory assets					8.3	79.7
Evergy Kansas Central | Fuel recovery mechanisms
Regulatory Proceedings [Line Items]
Regulatory assets					16.3	0
Evergy Metro
Regulatory Proceedings [Line Items]
Regulatory liabilities					1,046.9	903.2
Regulatory assets					472.1	434
Evergy Metro | TFR Refund
Regulatory Proceedings [Line Items]
Regulatory liabilities					0	0
Evergy Metro | Fuel recovery mechanisms
Regulatory Proceedings [Line Items]
Regulatory liabilities					0.2	0
Evergy Metro | February 2021 winter weather event
Regulatory Proceedings [Line Items]
Regulatory assets					0	0
Evergy Metro | Fuel recovery mechanisms
Regulatory Proceedings [Line Items]
Regulatory assets					$ 9.4	14.1
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
La Cygne Station | Evergy Kansas South Inc
Regulatory Proceedings [Line Items]
VIE ownership percentage					50%
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%
Rate increase net of fuel and purchased power decrease pending approval		$ 55
Decrease to base rates for fuel and purchased power pending approval		$ 49
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
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 | A2025RateCaseProceedings [Member] | Evergy Kansas Central
Regulatory Proceedings [Line Items]
Annual revenue rate increase (decrease), requested	$ 196
Return on equity, requested	10.50%
Rate-making equity ratio, requested	52%

RATE MATTERS AND REGULATION - R

RATE MATTERS AND REGULATION - Regulatory Matters Asset (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Regulatory Assets [Line Items]
Regulatory Assets	$ 1,900.2	$ 2,087.4
Less: current portion	(180.9)	(292.1)
Regulatory assets	1,719.3	1,795.3
Pension and post-retirement costs
Regulatory Assets [Line Items]
Regulatory Assets	47.3	91.6
Regulatory asset representing differences between pension and post retirement costs for GAAP and for ratemaking	53.2
Remaining Amounts of Regulatory Assets for which No Return on Investment During Recovery Period is Provided	73.1
Debt reacquisition costs
Regulatory Assets [Line Items]
Regulatory Assets	74.8	81.2
Debt fair value adjustment
Regulatory Assets [Line Items]
Regulatory Assets	81.6	87
Asset retirement obligations fair value adjustment
Regulatory Assets [Line Items]
Regulatory Assets	121.9	120.7
Depreciation
Regulatory Assets [Line Items]
Regulatory Assets	238.3	168.7
Cost of removal
Regulatory Assets [Line Items]
Regulatory Assets	332.1	372.3
Asset retirement obligations
Regulatory Assets [Line Items]
Regulatory Assets	189	152.9
Analog meter unrecovered investment
Regulatory Assets [Line Items]
Regulatory Assets	6.2	8.3
Treasury yield hedges
Regulatory Assets [Line Items]
Regulatory Assets	17	18.1
Iatan No. 1 and common facilities
Regulatory Assets [Line Items]
Regulatory Assets	5.6	5.9
Iatan No. 2 construction accounting costs
Regulatory Assets [Line Items]
Regulatory Assets	22.7	23.4
Property taxes
Regulatory Assets [Line Items]
Regulatory Assets	26.6	56
Disallowed plant costs
Regulatory Assets [Line Items]
Regulatory Assets	13.2	13.5
La Cygne environmental costs
Regulatory Assets [Line Items]
Regulatory Assets	7.7	8.8
Deferred customer programs
Regulatory Assets [Line Items]
Regulatory Assets	38.5	20.3
Fuel recovery mechanisms
Regulatory Assets [Line Items]
Regulatory Assets	$ 25.7	101.3
Regulatory Asset, Amortization Period	1 year
February 2021 winter weather event
Regulatory Assets [Line Items]
Regulatory Assets	$ 8.3	403.5
February2021WinterWeatherEventSecuritizedCosts [Member]
Regulatory Assets [Line Items]
Regulatory Assets	310.4	0
Solar rebates
Regulatory Assets [Line Items]
Regulatory Assets	3.4	9.9
Transmission delivery charge
Regulatory Assets [Line Items]
Regulatory Assets	$ 22	2
Regulatory Asset, Amortization Period	1 year
Wolf Creek outage
Regulatory Assets [Line Items]
Regulatory Assets	$ 14.6	8.4
Pension and other post-retirement benefit non-service costs
Regulatory Assets [Line Items]
Regulatory Assets	82.4	85.8
Retired generation facility, approved
Regulatory Assets [Line Items]
Regulatory Assets	120.8	138.2
Merger transition costs
Regulatory Assets [Line Items]
Regulatory Assets	18.4	23.1
Other regulatory liabilities
Regulatory Assets [Line Items]
Regulatory Assets	71.7	86.5
OtherRegulatoryAssetsIncludedInRateBase
Regulatory Assets [Line Items]
Regulatory Assets	2.6
Evergy Kansas Central
Regulatory Assets [Line Items]
Regulatory Assets	526.3	632.9
Less: current portion	(79.7)	(127.7)
Regulatory assets	446.6	505.2
Evergy Kansas Central | Pension and post-retirement costs
Regulatory Assets [Line Items]
Regulatory Assets	0	29.7
Regulatory asset representing differences between pension and post retirement costs for GAAP and for ratemaking	(28.9)
Remaining Amounts of Regulatory Assets for which No Return on Investment During Recovery Period is Provided	33.1
Evergy Kansas Central | Debt reacquisition costs
Regulatory Assets [Line Items]
Regulatory Assets	69.8	75.3
Evergy Kansas Central | Debt fair value adjustment
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Evergy Kansas Central | Asset retirement obligations fair value adjustment
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Evergy Kansas Central | Depreciation
Regulatory Assets [Line Items]
Regulatory Assets	55.6	44.6
Evergy Kansas Central | Cost of removal
Regulatory Assets [Line Items]
Regulatory Assets	133.5	165.6
Evergy Kansas Central | Asset retirement obligations
Regulatory Assets [Line Items]
Regulatory Assets	81.5	65.9
Evergy Kansas Central | Analog meter unrecovered investment
Regulatory Assets [Line Items]
Regulatory Assets	6.2	8.3
Evergy Kansas Central | Treasury yield hedges
Regulatory Assets [Line Items]
Regulatory Assets	17	18.1
Evergy Kansas Central | Iatan No. 1 and common facilities
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Evergy Kansas Central | Iatan No. 2 construction accounting costs
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Evergy Kansas Central | Property taxes
Regulatory Assets [Line Items]
Regulatory Assets	0	28.3
Evergy Kansas Central | Disallowed plant costs
Regulatory Assets [Line Items]
Regulatory Assets	13.2	13.5
Evergy Kansas Central | La Cygne environmental costs
Regulatory Assets [Line Items]
Regulatory Assets	5.8	6.8
Evergy Kansas Central | Deferred customer programs
Regulatory Assets [Line Items]
Regulatory Assets	15.9	6.7
Evergy Kansas Central | Fuel recovery mechanisms
Regulatory Assets [Line Items]
Regulatory Assets	16.3	0
Evergy Kansas Central | February 2021 winter weather event
Regulatory Assets [Line Items]
Regulatory Assets	8.3	79.7
Evergy Kansas Central | February2021WinterWeatherEventSecuritizedCosts [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Evergy Kansas Central | Solar rebates
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Evergy Kansas Central | Transmission delivery charge
Regulatory Assets [Line Items]
Regulatory Assets	20	0.9
Evergy Kansas Central | Wolf Creek outage
Regulatory Assets [Line Items]
Regulatory Assets	7.3	4.2
Evergy Kansas Central | Pension and other post-retirement benefit non-service costs
Regulatory Assets [Line Items]
Regulatory Assets	31	32
Evergy Kansas Central | Retired generation facility, approved
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Evergy Kansas Central | Merger transition costs
Regulatory Assets [Line Items]
Regulatory Assets	8.7	11
Evergy Kansas Central | Other regulatory liabilities
Regulatory Assets [Line Items]
Regulatory Assets	36.2	42.3
Evergy Kansas Central | OtherRegulatoryAssetsIncludedInRateBase
Regulatory Assets [Line Items]
Regulatory Assets	2
Evergy Metro
Regulatory Assets [Line Items]
Regulatory Assets	472.1	434
Less: current portion	(42.7)	(53.2)
Regulatory assets	429.4	380.8
Evergy Metro | Pension and post-retirement costs
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Regulatory asset representing differences between pension and post retirement costs for GAAP and for ratemaking	36.6
Evergy Metro | Debt reacquisition costs
Regulatory Assets [Line Items]
Regulatory Assets	4.7	5.3
Evergy Metro | Debt fair value adjustment
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Evergy Metro | Asset retirement obligations fair value adjustment
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Evergy Metro | Depreciation
Regulatory Assets [Line Items]
Regulatory Assets	94.7	66
Evergy Metro | Cost of removal
Regulatory Assets [Line Items]
Regulatory Assets	167.8	168.2
Evergy Metro | Asset retirement obligations
Regulatory Assets [Line Items]
Regulatory Assets	82.2	64
Evergy Metro | Analog meter unrecovered investment
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Evergy Metro | Treasury yield hedges
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Evergy Metro | Iatan No. 1 and common facilities
Regulatory Assets [Line Items]
Regulatory Assets	2.5	2.5
Evergy Metro | Iatan No. 2 construction accounting costs
Regulatory Assets [Line Items]
Regulatory Assets	11.4	11.7
Evergy Metro | Property taxes
Regulatory Assets [Line Items]
Regulatory Assets	23.7	25.3
Evergy Metro | Disallowed plant costs
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Evergy Metro | La Cygne environmental costs
Regulatory Assets [Line Items]
Regulatory Assets	1.9	2
Evergy Metro | Deferred customer programs
Regulatory Assets [Line Items]
Regulatory Assets	17.2	11.2
Evergy Metro | Fuel recovery mechanisms
Regulatory Assets [Line Items]
Regulatory Assets	9.4	14.1
Evergy Metro | February 2021 winter weather event
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Evergy Metro | February2021WinterWeatherEventSecuritizedCosts [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Evergy Metro | Solar rebates
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Evergy Metro | Transmission delivery charge
Regulatory Assets [Line Items]
Regulatory Assets	2	1.1
Evergy Metro | Wolf Creek outage
Regulatory Assets [Line Items]
Regulatory Assets	7.3	4.2
Evergy Metro | Pension and other post-retirement benefit non-service costs
Regulatory Assets [Line Items]
Regulatory Assets	31.9	34.2
Evergy Metro | Retired generation facility, approved
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Evergy Metro | Merger transition costs
Regulatory Assets [Line Items]
Regulatory Assets	6.9	8.6
Evergy Metro | Other regulatory liabilities
Regulatory Assets [Line Items]
Regulatory Assets	8.5	$ 15.6
Evergy Metro | OtherRegulatoryAssetsIncludedInRateBase
Regulatory Assets [Line Items]
Regulatory Assets	$ 0.3

RATE MATTERS AND REGULATION -_2

RATE MATTERS AND REGULATION - Regulatory Matters Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Regulatory Liabilities [Line Items]
Regulatory liabilities	$ 2,845.8	$ 2,725.5
Less: current portion	(173.8)	(183)
Total noncurrent regulatory liabilities	2,672	2,542.5
Taxes refundable through future rates
Regulatory Liabilities [Line Items]
Regulatory liabilities	1,631.4	1,737.8
Nuclear production tax credits
Regulatory Liabilities [Line Items]
Regulatory liabilities	168.6	0
Deferred regulatory gain from sale leaseback
Regulatory Liabilities [Line Items]
Regulatory liabilities	26.1	31.6
Emission allowances
Regulatory Liabilities [Line Items]
Regulatory liabilities	30.2	34.2
Nuclear decommissioning
Regulatory Liabilities [Line Items]
Regulatory liabilities	387.2	318.7
Pension and post-retirement costs
Regulatory Liabilities [Line Items]
Regulatory liabilities	206.6	124.8
Jurisdictional allowance for funds used during construction
Regulatory Liabilities [Line Items]
Regulatory liabilities	23.8	24.4
La Cygne leasehold dismantling costs
Regulatory Liabilities [Line Items]
Regulatory liabilities	29.6	29.6
Kansas tax credits
Regulatory Liabilities [Line Items]
Regulatory liabilities	8.4	16.8
Purchase power agreement
Regulatory Liabilities [Line Items]
Regulatory liabilities	$ 3	3.7
Regulatory Liability, Amortization Period	5 years
Fuel recovery mechanisms
Regulatory Liabilities [Line Items]
Regulatory liabilities	$ 21.5	34.7
Regulatory Liability, Amortization Period	1 year
February 2021 winter weather event
Regulatory Liabilities [Line Items]
Regulatory liabilities	$ 3	13
Sibley AAO
Regulatory Liabilities [Line Items]
Regulatory liabilities	$ 52.8	79.2
Regulatory Liability, Amortization Period	4 years
TFR Refund
Regulatory Liabilities [Line Items]
Regulatory liabilities	$ 7.1	11.2
COLI rate credits refund
Regulatory Liabilities [Line Items]
Regulatory liabilities	$ 64.4	96.5
Regulatory Liability, Amortization Period	3 years
Levelized rate recovery
Regulatory Liabilities [Line Items]
Regulatory liabilities	$ 65	38.1
Other regulatory liabilities
Regulatory Liabilities [Line Items]
Regulatory liabilities	117.1	131.2
Evergy Kansas Central
Regulatory Liabilities [Line Items]
Regulatory liabilities	1,552.4	1,536.5
Less: current portion	(76.6)	(104.1)
Total noncurrent regulatory liabilities	1,475.8	1,432.4
Evergy Kansas Central | Taxes refundable through future rates
Regulatory Liabilities [Line Items]
Regulatory liabilities	1,008.5	1,047.2
Evergy Kansas Central | Nuclear production tax credits
Regulatory Liabilities [Line Items]
Regulatory liabilities	82.4	0
Evergy Kansas Central | Deferred regulatory gain from sale leaseback
Regulatory Liabilities [Line Items]
Regulatory liabilities	26.1	31.6
Evergy Kansas Central | Emission allowances
Regulatory Liabilities [Line Items]
Regulatory liabilities	0	0
Evergy Kansas Central | Nuclear decommissioning
Regulatory Liabilities [Line Items]
Regulatory liabilities	142.1	125.5
Evergy Kansas Central | Pension and post-retirement costs
Regulatory Liabilities [Line Items]
Regulatory liabilities	39	21.9
Evergy Kansas Central | Jurisdictional allowance for funds used during construction
Regulatory Liabilities [Line Items]
Regulatory liabilities	22.1	22.7
Evergy Kansas Central | La Cygne leasehold dismantling costs
Regulatory Liabilities [Line Items]
Regulatory liabilities	29.6	29.6
Evergy Kansas Central | Kansas tax credits
Regulatory Liabilities [Line Items]
Regulatory liabilities	8.4	16.8
Evergy Kansas Central | Purchase power agreement
Regulatory Liabilities [Line Items]
Regulatory liabilities	3	3.7
Evergy Kansas Central | Fuel recovery mechanisms
Regulatory Liabilities [Line Items]
Regulatory liabilities	0	34.7
Evergy Kansas Central | February 2021 winter weather event
Regulatory Liabilities [Line Items]
Regulatory liabilities	0	0
Evergy Kansas Central | Sibley AAO
Regulatory Liabilities [Line Items]
Regulatory liabilities	0	0
Evergy Kansas Central | TFR Refund
Regulatory Liabilities [Line Items]
Regulatory liabilities	7.1	11.2
Evergy Kansas Central | COLI rate credits refund
Regulatory Liabilities [Line Items]
Regulatory liabilities	64.4	96.5
Evergy Kansas Central | Levelized rate recovery
Regulatory Liabilities [Line Items]
Regulatory liabilities	65	38.1
Evergy Kansas Central | Other regulatory liabilities
Regulatory Liabilities [Line Items]
Regulatory liabilities	54.7	57
Evergy Metro
Regulatory Liabilities [Line Items]
Regulatory liabilities	1,046.9	903.2
Less: current portion	(38.5)	(43)
Total noncurrent regulatory liabilities	1,008.4	860.2
Evergy Metro | Taxes refundable through future rates
Regulatory Liabilities [Line Items]
Regulatory liabilities	477.7	519.2
Evergy Metro | Nuclear production tax credits
Regulatory Liabilities [Line Items]
Regulatory liabilities	86.2	0
Evergy Metro | Deferred regulatory gain from sale leaseback
Regulatory Liabilities [Line Items]
Regulatory liabilities	0	0
Evergy Metro | Emission allowances
Regulatory Liabilities [Line Items]
Regulatory liabilities	30.2	34.2
Evergy Metro | Nuclear decommissioning
Regulatory Liabilities [Line Items]
Regulatory liabilities	245.1	193.2
Evergy Metro | Pension and post-retirement costs
Regulatory Liabilities [Line Items]
Regulatory liabilities	165.4	100.5
Evergy Metro | Jurisdictional allowance for funds used during construction
Regulatory Liabilities [Line Items]
Regulatory liabilities	1.7	1.7
Evergy Metro | La Cygne leasehold dismantling costs
Regulatory Liabilities [Line Items]
Regulatory liabilities	0	0
Evergy Metro | Kansas tax credits
Regulatory Liabilities [Line Items]
Regulatory liabilities	0	0
Evergy Metro | Purchase power agreement
Regulatory Liabilities [Line Items]
Regulatory liabilities	0	0
Evergy Metro | Fuel recovery mechanisms
Regulatory Liabilities [Line Items]
Regulatory liabilities	0.2	0
Evergy Metro | February 2021 winter weather event
Regulatory Liabilities [Line Items]
Regulatory liabilities	3	13
Evergy Metro | Sibley AAO
Regulatory Liabilities [Line Items]
Regulatory liabilities	0	0
Evergy Metro | TFR Refund
Regulatory Liabilities [Line Items]
Regulatory liabilities	0	0
Evergy Metro | COLI rate credits refund
Regulatory Liabilities [Line Items]
Regulatory liabilities	0	0
Evergy Metro | Levelized rate recovery
Regulatory Liabilities [Line Items]
Regulatory liabilities	0	0
Evergy Metro | Other regulatory liabilities
Regulatory Liabilities [Line Items]
Regulatory liabilities	$ 37.4	$ 41.4

GOODWILL (Details)

GOODWILL (Details) $ in Millions	12 Months Ended
	Dec. 31, 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	12 Months Ended
	Jun. 30, 2023	Dec. 31, 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	$ 9.7	72.8	9.7
Revision in timing and/or estimates		(28)	3.2
Settlements		(12.1)	(21.8)
Accretion		61.2	58.8
Ending balance		1,297	1,203.1
Less: current portion		(28.7)	(40.3)
Asset retirement obligations		1,268.3	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	9.7
Revision in timing and/or estimates		(24.3)	1.6
Settlements		(7.4)	(9.8)
Accretion		35.4	32.7
Ending balance		647.8	599.3
Less: current portion		(16.5)	(22.2)
Asset retirement obligations		631.3	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	0
Revision in timing and/or estimates		(0.5)	1.6
Settlements		(4.3)	(8.6)
Accretion		23	23.2
Ending balance		502.7	460.4
Less: current portion		(11.8)	(16)
Asset retirement obligations		$ 490.9	$ 444.4

ASSET RETIREMENT OBLIGATIONS -

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

PROPERTY, PLANT AND EQUIPMENT_2

PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Electric plant in service	$ 36,444.9	$ 34,558.1
Electric plant acquisition adjustment	742.9	724.9
Accumulated depreciation	(14,165.5)	(13,301.6)
Plant in service	23,022.3	21,981.4
Construction work in progress	1,707	1,543.5
Nuclear fuel, net	200.9	203
Plant to be retired, net	0.7	0.8
Property, plant and equipment, net	24,930.9	23,728.7
Variable Interest Entities
Property, Plant and Equipment [Line Items]
Electric plant in service	392.1	392.1
Accumulated depreciation	(265.6)	(258.5)
Property, plant and equipment, net	126.5	133.6
Evergy Kansas Central
Property, Plant and Equipment [Line Items]
Electric plant in service	17,914.9	16,858.7
Electric plant acquisition adjustment	724.9	724.9
Accumulated depreciation	(6,914.4)	(6,502.7)
Plant in service	11,725.4	11,080.9
Construction work in progress	1,053.7	939.1
Nuclear fuel, net	100.3	101.1
Plant to be retired, net	0.7	0.8
Property, plant and equipment, net	12,880.1	12,121.9
Evergy Kansas Central | Variable Interest Entities
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	126.5	133.6
Evergy Metro
Property, Plant and Equipment [Line Items]
Electric plant in service	13,468.3	13,005.5
Electric plant acquisition adjustment	0	0
Accumulated depreciation	(5,752.6)	(5,404.9)
Plant in service	7,715.7	7,600.6
Construction work in progress	476.1	428.7
Nuclear fuel, net	100.6	101.9
Plant to be retired, net	0	0
Property, plant and equipment, net	$ 8,292.4	$ 8,131.2

PROPERTY, PLANT AND EQUIPMENT -

PROPERTY, PLANT AND EQUIPMENT - Depreciation Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 965.9	$ 943.3	$ 836.1
Variable Interest Entities
Property, Plant and Equipment [Line Items]
Depreciation expense	7.1	7.1	7.1
Evergy Kansas Central
Property, Plant and Equipment [Line Items]
Depreciation expense	542.3	497.7	468.2
Evergy Metro
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 294.6	$ 319.7	$ 261.7

JOINTLY-OWNED ELECTRIC UTILIT_3

JOINTLY-OWNED ELECTRIC UTILITY PLANTS (Details) $ in Millions	Dec. 31, 2024	Dec. 31, 2024 USD ($)	Dec. 31, 2024 Rate	Dec. 31, 2024 MW	Dec. 31, 2023 USD ($)
Jointly Owned Utility Plant Interests [Line Items]
Nuclear fuel, net		$ 200.9			$ 203
Wolf Creek Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share	94%		94%
Electric plant in service		4,335.4
Accumulated depreciation		2,323.8
Nuclear fuel, net		200.9
Construction work in progress		310.5
Accredited capacity | MW				1,106
La Cygne Units
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share | Rate			100%
Electric plant in service		2,379.9
Accumulated depreciation		1,077.4
Nuclear fuel, net		0
Construction work in progress		48.3
Accredited capacity | MW				1,426
Iatan No. 1 Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share | Rate			88%
Electric plant in service		795.1
Accumulated depreciation		307.5
Nuclear fuel, net		0
Construction work in progress		21.1
Accredited capacity | MW				618
Iatan No. 2 Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share | Rate			73%
Electric plant in service		1,429.5
Accumulated depreciation		488.1
Nuclear fuel, net		0
Construction work in progress		3.2
Accredited capacity | MW				653
Iatan Common
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share | Rate			79%
Electric plant in service		520.6
Accumulated depreciation		145.6
Nuclear fuel, net		0
Construction work in progress		2
Jeffrey Energy Center
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share | Rate			100%
Electric plant in service		2,640.1
Accumulated depreciation		1,112.6
Nuclear fuel, net		0
Construction work in progress		105.3
Accredited capacity | MW				2,183
State Line
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share | Rate			40%
Electric plant in service		136
Accumulated depreciation		102
Nuclear fuel, net		0
Construction work in progress		7.8
Accredited capacity | MW				209
Dogwood Energy Center
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share | Rate			22%
Electric plant in service		93.7
Accumulated depreciation		41.4
Nuclear fuel, net		0
Construction work in progress		1.2
Accredited capacity | MW				145
Evergy Kansas Central
Jointly Owned Utility Plant Interests [Line Items]
Nuclear fuel, net		100.3			101.1
Evergy Kansas Central | Wolf Creek Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share | Rate			47%
Electric plant in service		2,128.6
Accumulated depreciation		1,137.2
Nuclear fuel, net		100.3
Construction work in progress		141.6
Accredited capacity | MW				553
Evergy Kansas Central | La Cygne Units
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share | Rate			50%
Electric plant in service		1,121.7
Accumulated depreciation		578.3
Nuclear fuel, net		0
Construction work in progress		31.7
Accredited capacity | MW				713
Evergy Kansas Central | Jeffrey Energy Center
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share | Rate			92%
Electric plant in service		2,416.7
Accumulated depreciation		1,019.2
Nuclear fuel, net		0
Construction work in progress		96.8
Accredited capacity | MW				2,008
Evergy Kansas Central | State Line
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share | Rate			40%
Electric plant in service		136
Accumulated depreciation		102
Nuclear fuel, net		0
Construction work in progress		7.8
Accredited capacity | MW				209
Evergy Metro
Jointly Owned Utility Plant Interests [Line Items]
Nuclear fuel, net		100.6			$ 101.9
Evergy Metro | Wolf Creek Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share	47%		47%
Electric plant in service		2,206.8
Accumulated depreciation		1,186.6
Nuclear fuel, net		100.6
Construction work in progress		168.9
Accredited capacity | MW				553
Evergy Metro | La Cygne Units
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share | Rate			50%
Electric plant in service		1,258.2
Accumulated depreciation		499.1
Nuclear fuel, net		0
Construction work in progress		16.6
Accredited capacity | MW				713
Evergy Metro | Iatan No. 1 Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share | Rate			70%
Electric plant in service		618.2
Accumulated depreciation		258.1
Nuclear fuel, net		0
Construction work in progress		16.9
Accredited capacity | MW				492
Evergy Metro | Iatan No. 2 Unit
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share | Rate			55%
Electric plant in service		1,078.6
Accumulated depreciation		450.7
Nuclear fuel, net		0
Construction work in progress		2.4
Accredited capacity | MW				491
Evergy Metro | Iatan Common
Jointly Owned Utility Plant Interests [Line Items]
Jointly owned utility plant, proportionate ownership share | Rate			61%
Electric plant in service		412.8
Accumulated depreciation		131.4
Nuclear fuel, net		0
Construction work in progress		$ 1.3
Subsidiaries | La Cygne Unit 2
Jointly Owned Utility Plant Interests [Line Items]
Leasehold interest percentage	50%
Subsidiaries | Evergy Kansas Central | La Cygne Unit 2
Jointly Owned Utility Plant Interests [Line Items]
Leasehold interest percentage	50%

PENSION PLANS AND POST-RETIRE_3

PENSION PLANS AND POST-RETIREMENT BENEFITS - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2024	Dec. 31, 2024
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Special termination benefits		$ (21.1)	$ 52.8
Non-qualified benefit obligations		38			$ 36
Funded by trusts containing assets		33.3			31.4
Contributions to plans remainder of year					64.7
Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits	$ (0.2)
Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Special termination benefits		0	6.7
Contributions to plans remainder of year					0.6
Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits	0
Pension and Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Special termination benefits			59.5
Evergy Kansas Central | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Special termination benefits		1.1	15.6
Non-qualified benefit obligations		19.5			18.4
Funded by trusts containing assets		24.5			23.4
Contributions to plans remainder of year					29.7
Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits	(0.2)
Evergy Kansas Central | Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Special termination benefits		0	1.4
Contributions to plans remainder of year					0.3
Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits	0
Evergy Kansas Central | Pension and Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Special termination benefits			17
Evergy Metro | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Special termination benefits		(22.2)	37.2
Contributions to plans remainder of year					35
Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits	0
Evergy Metro | Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Special termination benefits		$ 0	5.3
Contributions to plans remainder of year					$ 0.3
Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits	$ 0
Evergy Metro | Pension and Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Special termination benefits			$ 42.5
Wolf Creek
Defined Benefit Plan Disclosure [Line Items]
Jointly owned utility plant, proportionate ownership share	94%			94%
Wolf Creek | Evergy Kansas Central
Defined Benefit Plan Disclosure [Line Items]
Jointly owned utility plant, proportionate ownership share				47%
Wolf Creek | Evergy Kansas South Inc
Defined Benefit Plan Disclosure [Line Items]
Jointly owned utility plant, proportionate ownership share	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 (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Benefits
Components of net periodic benefit costs
Defined benefit plan, benefit obligation, beginning of the year	$ 1,704.4	$ 1,850.5
Service cost	46	44.9	$ 79.7
Interest cost	89.5	91.9	79.3
Contribution by participants	0	0
Plan amendments	0
Actuarial gain (loss)	(60.7)	64.8
Benefits paid	(106.4)	(84.1)
Special termination benefits	0.2
Settlements		(256.2)
Other	(8)	(7.4)
Defined benefit plan, benefit obligation, end of the year	1,665	1,704.4	1,850.5
Change in plan assets
Fair value of plan assets, beginning of the year	1,250.7	1,409.2
Actual return on plan assets	122.2	145.2
Contributions by employer and participants	37.2	36.8
Benefits paid	(102.7)	(80.2)
Settlements		(252.9)
Other	(8)	(7.4)
Fair value of plan assets, end of the year	1,299.4	1,250.7	1,409.2
Funded status at end of year	(365.6)	(453.7)
Amounts recognized in the consolidated balance sheets
Non-current asset	0	0
Current pension and other post-retirement liability	(5)	(4.5)
Noncurrent pension liability and other post-retirement liability	(360.6)	(449.2)
Net amount recognized before regulatory treatment	(365.6)	(453.7)
Accumulated OCI or regulatory asset/liability	(173.2)	(92.4)
Net amount recognized as of December 31, 2024	(538.8)	(546.1)
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Accumulated OCI or regulatory asset/liability	(173.2)	(92.4)
Special termination benefits		21.1	(52.8)
Pension Benefits | Evergy Kansas Central
Components of net periodic benefit costs
Defined benefit plan, benefit obligation, beginning of the year	876.2	911.7
Service cost	19	18.6	30.7
Interest cost	45.6	47	38.8
Contribution by participants	0	0
Plan amendments	0
Actuarial gain (loss)	(28.2)	42.2
Benefits paid	(58.3)	(50.6)
Special termination benefits	0.2
Settlements		(89.3)
Other	(3.5)	(3.4)
Defined benefit plan, benefit obligation, end of the year	851	876.2	911.7
Change in plan assets
Fair value of plan assets, beginning of the year	620.6	668.5
Actual return on plan assets	62.3	75.5
Contributions by employer and participants	10.6	15.1
Benefits paid	(56.1)	(48.2)
Settlements		(86.9)
Other	(3.5)	(3.4)
Fair value of plan assets, end of the year	633.9	620.6	668.5
Funded status at end of year	(217.1)	(255.6)
Amounts recognized in the consolidated balance sheets
Non-current asset	0	0
Current pension and other post-retirement liability	(2.4)	(2.5)
Noncurrent pension liability and other post-retirement liability	(214.7)	(253.1)
Net amount recognized before regulatory treatment	(217.1)	(255.6)
Accumulated OCI or regulatory asset/liability	10.2	60.7
Net amount recognized as of December 31, 2024	(206.9)	(194.9)
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Accumulated OCI or regulatory asset/liability	10.2	60.7
Special termination benefits		(1.1)	(15.6)
Pension Benefits | Evergy Metro
Components of net periodic benefit costs
Defined benefit plan, benefit obligation, beginning of the year	809.7	920.6
Service cost	27	26.3	49
Interest cost	43	44	39.8
Contribution by participants	0	0
Plan amendments	0
Actuarial gain (loss)	(31.9)	22
Benefits paid	(47)	(32.3)
Special termination benefits	0
Settlements		(166.9)
Other	(4.5)	(4)
Defined benefit plan, benefit obligation, end of the year	796.3	809.7	920.6
Change in plan assets
Fair value of plan assets, beginning of the year	630.1	740.7
Actual return on plan assets	59.9	69.7
Contributions by employer and participants	26.6	21.7
Benefits paid	(46.6)	(32)
Settlements		(166)
Other	(4.5)	(4)
Fair value of plan assets, end of the year	665.5	630.1	740.7
Funded status at end of year	(130.8)	(179.6)
Amounts recognized in the consolidated balance sheets
Non-current asset	0	0
Current pension and other post-retirement liability	(1.1)	(0.5)
Noncurrent pension liability and other post-retirement liability	(129.7)	(179.1)
Net amount recognized before regulatory treatment	(130.8)	(179.6)
Accumulated OCI or regulatory asset/liability	(174.7)	(144.1)
Net amount recognized as of December 31, 2024	(305.5)	(323.7)
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Accumulated OCI or regulatory asset/liability	(174.7)	(144.1)
Special termination benefits		22.2	(37.2)
Post-Retirement Benefits
Components of net periodic benefit costs
Defined benefit plan, benefit obligation, beginning of the year	192.8	201.7
Service cost	1.6	1.8	3
Interest cost	10.1	11.1	7.9
Contribution by participants	5.6	6.2
Plan amendments	4.2
Actuarial gain (loss)	(13)	(4)
Benefits paid	(20.4)	(24)
Special termination benefits	0
Settlements		0
Other	0	0
Defined benefit plan, benefit obligation, end of the year	180.9	192.8	201.7
Change in plan assets
Fair value of plan assets, beginning of the year	201.5	192.9
Actual return on plan assets	14.2	21.6
Contributions by employer and participants	6.4	9.6
Benefits paid	(19.1)	(22.6)
Settlements		0
Other	0	0
Fair value of plan assets, end of the year	203	201.5	192.9
Funded status at end of year	22.1	8.7
Amounts recognized in the consolidated balance sheets
Non-current asset	33.9	24.7
Current pension and other post-retirement liability	(1.1)	(1.1)
Noncurrent pension liability and other post-retirement liability	(10.7)	(14.9)
Net amount recognized before regulatory treatment	22.1	8.7
Accumulated OCI or regulatory asset/liability	(41.7)	(34)
Net amount recognized as of December 31, 2024	(19.6)	(25.3)
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Accumulated OCI or regulatory asset/liability	(41.7)	(34)
Special termination benefits		0	(6.7)
Post-Retirement Benefits | Evergy Kansas Central
Components of net periodic benefit costs
Defined benefit plan, benefit obligation, beginning of the year	97.8	103
Service cost	0.9	0.9	1.5
Interest cost	5.1	5.7	4.1
Contribution by participants	0.7	1
Plan amendments	3.3
Actuarial gain (loss)	(5.3)	(2.6)
Benefits paid	(9.2)	(10.2)
Special termination benefits	0
Settlements		0
Other	0	0
Defined benefit plan, benefit obligation, end of the year	93.3	97.8	103
Change in plan assets
Fair value of plan assets, beginning of the year	99.1	96.2
Actual return on plan assets	7.6	11.5
Contributions by employer and participants	1.2	1.2
Benefits paid	(8.8)	(9.8)
Settlements		0
Other	0	0
Fair value of plan assets, end of the year	99.1	99.1	96.2
Funded status at end of year	5.8	1.3
Amounts recognized in the consolidated balance sheets
Non-current asset	9.8	5
Current pension and other post-retirement liability	(0.5)	(0.5)
Noncurrent pension liability and other post-retirement liability	(3.5)	(3.2)
Net amount recognized before regulatory treatment	5.8	1.3
Accumulated OCI or regulatory asset/liability	(20.3)	(18.6)
Net amount recognized as of December 31, 2024	(14.5)	(17.3)
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Accumulated OCI or regulatory asset/liability	(20.3)	(18.6)
Special termination benefits		0	(1.4)
Post-Retirement Benefits | Evergy Metro
Components of net periodic benefit costs
Defined benefit plan, benefit obligation, beginning of the year	95	98.6
Service cost	0.7	0.9	1.5
Interest cost	5	5.5	3.8
Contribution by participants	4.9	5.2
Plan amendments	0.9
Actuarial gain (loss)	(7.7)	(1.4)
Benefits paid	(11.2)	(13.8)
Special termination benefits	0
Settlements		0
Other	0	0
Defined benefit plan, benefit obligation, end of the year	87.6	95	98.6
Change in plan assets
Fair value of plan assets, beginning of the year	102.4	96.7
Actual return on plan assets	6.6	10.1
Contributions by employer and participants	5.2	8.4
Benefits paid	(10.3)	(12.8)
Settlements		0
Other	0	0
Fair value of plan assets, end of the year	103.9	102.4	96.7
Funded status at end of year	16.3	7.4
Amounts recognized in the consolidated balance sheets
Non-current asset	24.1	19.7
Current pension and other post-retirement liability	(0.5)	(0.6)
Noncurrent pension liability and other post-retirement liability	(7.3)	(11.7)
Net amount recognized before regulatory treatment	16.3	7.4
Accumulated OCI or regulatory asset/liability	(27.3)	(21.7)
Net amount recognized as of December 31, 2024	(11)	(14.3)
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Accumulated OCI or regulatory asset/liability	(27.3)	(21.7)
Special termination benefits		0	$ (5.3)
Actuarial gain | Pension Benefits
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Actuarial (gain) loss	(183)	(104.1)
Actuarial gain | Pension Benefits | Evergy Kansas Central
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Actuarial (gain) loss	(1.2)	47.3
Actuarial gain | Pension Benefits | Evergy Metro
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Actuarial (gain) loss	(173.4)	(142.8)
Actuarial gain | Post-Retirement Benefits
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Actuarial (gain) loss	(46.5)	(34.7)
Actuarial gain | Post-Retirement Benefits | Evergy Kansas Central
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Actuarial (gain) loss	(23.9)	(19)
Actuarial gain | Post-Retirement Benefits | Evergy Metro
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Actuarial (gain) loss	(23.8)	(16.9)
Prior service cost | Pension Benefits
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Prior service cost	9.8	11.7
Net gain due to settlement		21.1
Prior service cost | Pension Benefits | Evergy Kansas Central
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Prior service cost	11.4	13.4
Net gain due to settlement		(1.1)
Prior service cost | Pension Benefits | Evergy Metro
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Prior service cost	(1.3)	(1.3)
Net gain due to settlement		22.2
Prior service cost | Post-Retirement Benefits
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Prior service cost	4.8	0.7
Net gain due to settlement		0
Prior service cost | Post-Retirement Benefits | Evergy Kansas Central
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Prior service cost	3.6	0.4
Net gain due to settlement		0
Prior service cost | Post-Retirement Benefits | Evergy Metro
Amounts in accumulated OCI or regulatory asset/liability not yet recognized as a component of net periodic benefit cost:
Prior service cost	$ (3.5)	(4.8)
Net gain due to settlement		$ 0

PENSION PLANS AND POST-RETIRE_5

PENSION PLANS AND POST-RETIREMENT BENEFITS PENSION PLANS AND POST-RETIREMENT BENEFITS - Schedule of Components of Net Periodic Benefit Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Total recognized in OCI or regulatory asset/liability	$ (5.8)	$ (4.9)	$ (9.5)
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	46	44.9	79.7
Interest cost	89.5	91.9	79.3
Expected return on plan assets	(86.7)	(87.6)	(104)
Prior service cost	1.9	1.9	1.9
Recognized net actuarial (gain) loss	(17.4)	(21.5)	34.8
Special termination benefits		(21.1)	52.8
Net periodic benefit costs before regulatory adjustment and intercompany allocations	33.5	8.5	144.5
Regulatory adjustment	24.1	94	14.7
Net periodic benefit costs (income)	57.6	102.5	159.2
Total recognized in net periodic benefit costs and OCI or regulatory asset/liability	(23.2)	150.3	(298.2)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Total recognized in OCI or regulatory asset/liability	(80.8)	47.8	(457.4)
Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	1.6	1.8	3
Interest cost	10.1	11.1	7.9
Expected return on plan assets	(11.5)	(11.9)	(10.2)
Prior service cost	0.1	0.1	0.5
Recognized net actuarial (gain) loss	(3.9)	(4.2)	(0.3)
Special termination benefits		0	6.7
Net periodic benefit costs before regulatory adjustment and intercompany allocations	(3.6)	(3.1)	7.6
Regulatory adjustment	(0.1)	(0.1)	(7.1)
Net periodic benefit costs (income)	(3.7)	(3.2)	0.5
Total recognized in net periodic benefit costs and OCI or regulatory asset/liability	(11.4)	(12.7)	(12.6)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Total recognized in OCI or regulatory asset/liability	(7.7)	(9.5)	(13.1)
Evergy Kansas Central | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	19	18.6	30.7
Interest cost	45.6	47	38.8
Expected return on plan assets	(43)	(44.1)	(51.2)
Prior service cost	1.9	2	2
Recognized net actuarial (gain) loss	0.9	(2.5)	25.6
Special termination benefits		1.1	15.6
Net periodic benefit costs before regulatory adjustment and intercompany allocations	24.6	22.1	61.5
Regulatory adjustment	(6.4)	30.4	0.7
Intercompany allocations	(1.9)	(2.3)	2.9
Net periodic benefit costs (income)	16.3	50.2	65.1
Total recognized in net periodic benefit costs and OCI or regulatory asset/liability	(34.2)	60.6	(148.2)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Total recognized in OCI or regulatory asset/liability	(50.5)	10.4	(213.3)
Evergy Kansas Central | Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.9	0.9	1.5
Interest cost	5.1	5.7	4.1
Expected return on plan assets	(5.9)	(6.3)	(6.5)
Prior service cost	0.1	0	0.4
Recognized net actuarial (gain) loss	(2)	(2)	(0.2)
Special termination benefits		0	1.4
Net periodic benefit costs before regulatory adjustment and intercompany allocations	(1.8)	(1.7)	0.7
Regulatory adjustment	0.8	(1.7)	(3.6)
Intercompany allocations	(0.1)	0.3	0.3
Net periodic benefit costs (income)	(1.1)	(3.1)	(2.6)
Total recognized in net periodic benefit costs and OCI or regulatory asset/liability	(2.8)	(8.9)	(5.8)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Total recognized in OCI or regulatory asset/liability	(1.7)	(5.8)	(3.2)
Evergy Metro
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Total recognized in OCI or regulatory asset/liability	0.3	0.3	0.3
Evergy Metro | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	27	26.3	49
Interest cost	43	44	39.8
Expected return on plan assets	(43.7)	(43.4)	(56.4)
Prior service cost	0	0	0
Recognized net actuarial (gain) loss	(17.5)	(18.2)	38.6
Special termination benefits		(22.2)	37.2
Net periodic benefit costs before regulatory adjustment and intercompany allocations	8.8	(13.5)	108.2
Regulatory adjustment	29.8	63	(12.1)
Intercompany allocations	(2.2)	(1.1)	(18.4)
Net periodic benefit costs (income)	36.4	48.4	77.7
Total recognized in net periodic benefit costs and OCI or regulatory asset/liability	5.8	84.6	(187.2)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Total recognized in OCI or regulatory asset/liability	(30.6)	36.2	(264.9)
Evergy Metro | Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.7	0.9	1.5
Interest cost	5	5.5	3.8
Expected return on plan assets	(5.6)	(5.7)	(3.7)
Prior service cost	(0.4)	(0.4)	(1.4)
Recognized net actuarial (gain) loss	(1.8)	(2.1)	(0.7)
Special termination benefits		0	5.3
Net periodic benefit costs before regulatory adjustment and intercompany allocations	(2.1)	(1.8)	4.8
Regulatory adjustment	(0.6)	2.1	(1.3)
Intercompany allocations	0.6	0	(0.6)
Net periodic benefit costs (income)	(2.1)	0.3	2.9
Total recognized in net periodic benefit costs and OCI or regulatory asset/liability	(7.7)	(3)	(5)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Total recognized in OCI or regulatory asset/liability	(5.6)	(3.3)	(7.9)
Actuarial gain | Pension Benefits
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(96.3)	7.1	(421.4)
Amounts reclassified from accumulated other comprehensive loss	17.4	21.5	(34.7)
Actuarial gain | Post-Retirement Benefits
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(15.7)	(13.6)	(13)
Amounts reclassified from accumulated other comprehensive loss	3.9	4.2	0.4
Actuarial gain | Evergy Kansas Central | Pension Benefits
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(47.7)	11	(186.1)
Amounts reclassified from accumulated other comprehensive loss	(0.9)	2.5	(25.6)
Actuarial gain | Evergy Kansas Central | Post-Retirement Benefits
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(7)	(7.8)	(3)
Amounts reclassified from accumulated other comprehensive loss	2	2	0.2
Actuarial gain | Evergy Metro | Pension Benefits
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(48.1)	(4.2)	(226.7)
Amounts reclassified from accumulated other comprehensive loss	17.5	18.2	(38.6)
Actuarial gain | Evergy Metro | Post-Retirement Benefits
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(8.7)	(5.8)	(10)
Amounts reclassified from accumulated other comprehensive loss	1.8	2.1	0.7
Prior service cost | Pension Benefits
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0
Amounts reclassified from accumulated other comprehensive loss	(1.9)	(1.9)	(1.9)
Net gain due to settlement		21.1
Prior service cost | Post-Retirement Benefits
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(4.2)
Amounts reclassified from accumulated other comprehensive loss	(0.1)	(0.1)	(0.5)
Net gain due to settlement		0
Prior service cost | Evergy Kansas Central | Pension Benefits
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0
Amounts reclassified from accumulated other comprehensive loss	(1.9)	(2)	(2)
Net gain due to settlement		(1.1)
Prior service cost | Evergy Kansas Central | Post-Retirement Benefits
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(3.4)
Amounts reclassified from accumulated other comprehensive loss	(0.1)	0	(0.4)
Net gain due to settlement		0
Prior service cost | Evergy Metro | Pension Benefits
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0
Amounts reclassified from accumulated other comprehensive loss	0	0	0
Net gain due to settlement		22.2
Prior service cost | Evergy Metro | Post-Retirement Benefits
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, Tax [Abstract]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(0.9)
Amounts reclassified from accumulated other comprehensive loss	$ 0.4	0.4	$ 1.4
Net gain due to settlement		$ 0

PENSION PLANS AND POST-RETIRE_6

PENSION PLANS AND POST-RETIREMENT BENEFITS - APBO (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
ABO for all defined benefit pension plans	$ 1,503.6	$ 1,539.7
Pension plans with the PBO in excess of plan assets
Projected benefit obligation	1,665	1,704.4
Fair value of plan assets	1,299.4	1,250.7
Other post-retirement benefit plans with the APBO in excess of plan assets
Accumulated benefit obligation	1,503.6	1,539.7
Fair value of plan assets	1,299.4	1,250.7
Post-Retirement Benefits
Other post-retirement benefit plans with the APBO in excess of plan assets
Accumulated benefit obligation	78.8	82.6
Fair value of plan assets	67.3	66.9
Evergy Kansas Central | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
ABO for all defined benefit pension plans	785.9	809.9
Pension plans with the PBO in excess of plan assets
Projected benefit obligation	851	876.2
Fair value of plan assets	633.9	620.6
Other post-retirement benefit plans with the APBO in excess of plan assets
Accumulated benefit obligation	785.9	809.9
Fair value of plan assets	633.9	620.6
Evergy Kansas Central | Post-Retirement Benefits
Other post-retirement benefit plans with the APBO in excess of plan assets
Accumulated benefit obligation	3.7	3.5
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
ABO for all defined benefit pension plans	700.2	711.3
Pension plans with the PBO in excess of plan assets
Projected benefit obligation	796.3	809.7
Fair value of plan assets	665.5	630.1
Other post-retirement benefit plans with the APBO in excess of plan assets
Accumulated benefit obligation	700.2	711.3
Fair value of plan assets	665.5	630.1
Evergy Metro | Post-Retirement Benefits
Other post-retirement benefit plans with the APBO in excess of plan assets
Accumulated benefit obligation	75.1	79.1
Fair value of plan assets	$ 67.3	$ 66.9

PENSION PLANS AND POST-RETIRE_7

PENSION PLANS AND POST-RETIREMENT BENEFITS - Weighted-Average Assumptions (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Pension Benefits
Weighted-average assumptions used to determine the benefit obligation
Discount rate	5.77%	5.35%
Rate of compensation increase	3.72%	3.72%
Interest crediting rate for cash balance plans	4.40%	4.13%
Weighted-average assumptions used to determine net costs
Discount rate	5.35%	5.45%
Expected long-term return on plan assets	6.84%	6.71%
Rate of compensation increase	3.72%	3.72%
Interest crediting rate for cash balance plans	4.13%	4.13%
Post-Retirement Benefits
Weighted-average assumptions used to determine the benefit obligation
Discount rate	5.79%	5.43%
Rate of compensation increase	3.75%	3.75%
Weighted-average assumptions used to determine net costs
Discount rate	5.43%	5.74%
Expected long-term return on plan assets	5.48%	5.48%
Rate of compensation increase	3.75%	3.75%
Evergy Kansas Central | Pension Benefits
Weighted-average assumptions used to determine the benefit obligation
Discount rate	5.76%	5.34%
Rate of compensation increase	3.77%	3.77%
Interest crediting rate for cash balance plans	4.20%	4.20%
Weighted-average assumptions used to determine net costs
Discount rate	5.34%	5.66%
Expected long-term return on plan assets	6.90%	6.80%
Rate of compensation increase	3.77%	3.78%
Interest crediting rate for cash balance plans	4.20%	4%
Evergy Kansas Central | Post-Retirement Benefits
Weighted-average assumptions used to determine the benefit obligation
Discount rate	5.79%	5.45%
Weighted-average assumptions used to determine net costs
Discount rate	5.45%	5.75%
Expected long-term return on plan assets	5.75%	5.75%
Evergy Metro | Pension Benefits
Weighted-average assumptions used to determine the benefit obligation
Discount rate	5.79%	5.35%
Rate of compensation increase	3.70%	3.71%
Interest crediting rate for cash balance plans	4.63%	4.47%
Weighted-average assumptions used to determine net costs
Discount rate	5.35%	5.62%
Expected long-term return on plan assets	6.79%	6.62%
Rate of compensation increase	3.71%	3.70%
Interest crediting rate for cash balance plans	4.47%	4.43%
Evergy Metro | Post-Retirement Benefits
Weighted-average assumptions used to determine the benefit obligation
Discount rate	5.78%	5.41%
Rate of compensation increase	3.75%	3.75%
Weighted-average assumptions used to determine net costs
Discount rate	5.41%	5.72%
Expected long-term return on plan assets	5.22%	5.22%
Rate of compensation increase	3.75%	3.75%

PENSION PLANS AND POST-RETIRE_8

PENSION PLANS AND POST-RETIREMENT BENEFITS - Expected Future Services (Details) $ in Millions	Dec. 31, 2024 USD ($)
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
2024	$ 142.7
2025	143.4
2026	144.2
2027	144.6
2028	143.8
2030-2034	719.1
Contributions to plans remainder of year	64.7
Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
2024	16.9
2025	16.3
2026	15.8
2027	14
2028	13.6
2030-2034	63.9
Contributions to plans remainder of year	0.6
Evergy Kansas Central | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
2024	76.9
2025	75.5
2026	74.5
2027	73.4
2028	72.3
2030-2034	345.3
Contributions to plans remainder of year	29.7
Evergy Kansas Central | Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
2024	9.4
2025	9
2026	8.8
2027	7.7
2028	7.4
2030-2034	34.1
Contributions to plans remainder of year	0.3
Evergy Metro | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
2024	64.3
2025	66.4
2026	68.2
2027	69.6
2028	69.9
2030-2034	366.7
Contributions to plans remainder of year	35
Evergy Metro | Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
2024	7.5
2025	7.3
2026	7
2027	6.3
2028	6.2
2030-2034	29.8
Contributions to plans remainder of year	$ 0.3

PENSION PLANS AND POST-RETIRE_9

PENSION PLANS AND POST-RETIREMENT BENEFITS - Target Asset Allocations (Details)	Dec. 31, 2024
Evergy Kansas Central | Pension Benefits | Domestic equities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	26%
Evergy Kansas Central | Pension Benefits | International equities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	20%
Evergy Kansas Central | Pension Benefits | Bonds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	39%
Evergy Kansas Central | Pension Benefits | Mortgage & asset backed securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	0%
Evergy Kansas Central | Pension Benefits | Real estate investments
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	4%
Evergy Kansas Central | Pension Benefits | Other investments
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	11%
Evergy Kansas Central | Post-Retirement Benefits | Domestic equities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	26%
Evergy Kansas Central | Post-Retirement Benefits | International equities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	18%
Evergy Kansas Central | Post-Retirement Benefits | Bonds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	56%
Evergy Kansas Central | Post-Retirement Benefits | Mortgage & asset backed securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	0%
Evergy Kansas Central | Post-Retirement Benefits | Real estate investments
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	0%
Evergy Kansas Central | Post-Retirement Benefits | Other investments
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	0%
Evergy Metro | Pension Benefits | Domestic equities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	25%
Evergy Metro | Pension Benefits | International equities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	21%
Evergy Metro | Pension Benefits | Bonds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	37%
Evergy Metro | Pension Benefits | Mortgage & asset backed securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	0%
Evergy Metro | Pension Benefits | Real estate investments
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	6%
Evergy Metro | Pension Benefits | Other investments
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	11%
Evergy Metro | Post-Retirement Benefits | Domestic equities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	20%
Evergy Metro | Post-Retirement Benefits | International equities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	10%
Evergy Metro | Post-Retirement Benefits | Bonds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	62%
Evergy Metro | Post-Retirement Benefits | Mortgage & asset backed securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	7%
Evergy Metro | Post-Retirement Benefits | Real estate investments
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	0%
Evergy Metro | Post-Retirement Benefits | Other investments
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets, target allocation, percentage	1%

PENSION PLANS AND POST-RETIR_10

PENSION PLANS AND POST-RETIREMENT BENEFITS - Fair Values of Assets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 1,299.4	$ 1,250.7	$ 1,409.2
Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	203	201.5	192.9
Evergy Kansas Central | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	633.9	620.6	668.5
Evergy Kansas Central | Pension Benefits | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	500.3	495.6
Evergy Kansas Central | Pension Benefits | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	133.6	125
Evergy Kansas Central | Pension Benefits | Domestic equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	146.4	145.9
Evergy Kansas Central | Pension Benefits | Domestic equities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	128.5	124
Evergy Kansas Central | Pension Benefits | Domestic equities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | Domestic equities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | Domestic equities | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17.9	21.9
Evergy Kansas Central | Pension Benefits | International equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	114.6	118.2
Evergy Kansas Central | Pension Benefits | International equities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	114.6	118.2
Evergy Kansas Central | Pension Benefits | International equities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | International equities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | International equities | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | Bond funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	224.7	224.2
Evergy Kansas Central | Pension Benefits | Bond funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	224.7	224.2
Evergy Kansas Central | Pension Benefits | Bond funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | Bond funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | Bond funds | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | Real estate investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	22.3	23
Evergy Kansas Central | Pension Benefits | Real estate investments | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | Real estate investments | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | Real estate investments | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | Real estate investments | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	22.3	23
Evergy Kansas Central | Pension Benefits | Combination debt/equity/other fund
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	32.5	29.2
Evergy Kansas Central | Pension Benefits | Combination debt/equity/other fund | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	32.5	29.2
Evergy Kansas Central | Pension Benefits | Combination debt/equity/other fund | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | Combination debt/equity/other fund | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | Combination debt/equity/other fund | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | Alternative investment funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	88.3	74.6
Evergy Kansas Central | Pension Benefits | Alternative investment funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | Alternative investment funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | Alternative investment funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | Alternative investment funds | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	88.3	74.6
Evergy Kansas Central | Pension Benefits | Short-term investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5.1	5.5
Evergy Kansas Central | Pension Benefits | Short-term investments | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | Short-term investments | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | Short-term investments | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Pension Benefits | Short-term investments | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5.1	5.5
Evergy Kansas Central | Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	99.1	99.1	96.2
Evergy Kansas Central | Post-Retirement Benefits | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	98.1	98.1
Evergy Kansas Central | Post-Retirement Benefits | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Post-Retirement Benefits | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Post-Retirement Benefits | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1	1
Evergy Kansas Central | Post-Retirement Benefits | Domestic equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	26.1	26.1
Evergy Kansas Central | Post-Retirement Benefits | Domestic equities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	26.1	26.1
Evergy Kansas Central | Post-Retirement Benefits | Domestic equities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Post-Retirement Benefits | Domestic equities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Post-Retirement Benefits | Domestic equities | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Post-Retirement Benefits | International equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17.3	17.9
Evergy Kansas Central | Post-Retirement Benefits | International equities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17.3	17.9
Evergy Kansas Central | Post-Retirement Benefits | International equities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Post-Retirement Benefits | International equities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Post-Retirement Benefits | International equities | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Post-Retirement Benefits | Bond funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	49.9	49.6
Evergy Kansas Central | Post-Retirement Benefits | Bond funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	49.9	49.6
Evergy Kansas Central | Post-Retirement Benefits | Bond funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Post-Retirement Benefits | Bond funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Post-Retirement Benefits | Bond funds | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Post-Retirement Benefits | Combination debt/equity/other fund
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4.8	4.5
Evergy Kansas Central | Post-Retirement Benefits | Combination debt/equity/other fund | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4.8	4.5
Evergy Kansas Central | Post-Retirement Benefits | Combination debt/equity/other fund | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Post-Retirement Benefits | Combination debt/equity/other fund | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Post-Retirement Benefits | Combination debt/equity/other fund | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Post-Retirement Benefits | Short-term investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1	1
Evergy Kansas Central | Post-Retirement Benefits | Short-term investments | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Post-Retirement Benefits | Short-term investments | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Post-Retirement Benefits | Short-term investments | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Kansas Central | Post-Retirement Benefits | Short-term investments | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1	1
Evergy Metro | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	665.5	630.1	740.7
Evergy Metro | Pension Benefits | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	494	457.2
Evergy Metro | Pension Benefits | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	32.5	33.1
Evergy Metro | Pension Benefits | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	139	139.8
Evergy Metro | Pension Benefits | Domestic equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	150.4	138.9
Evergy Metro | Pension Benefits | Domestic equities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	137.2	122.9
Evergy Metro | Pension Benefits | Domestic equities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Domestic equities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Domestic equities | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	13.2	16
Evergy Metro | Pension Benefits | International equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	128.7	120
Evergy Metro | Pension Benefits | International equities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	128.7	120
Evergy Metro | Pension Benefits | International equities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | International equities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | International equities | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Bond funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	181.7	174.9
Evergy Metro | Pension Benefits | Bond funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	181.7	174.9
Evergy Metro | Pension Benefits | Bond funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Bond funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Bond funds | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	19.3	21.1
Evergy Metro | Pension Benefits | Corporate bonds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Corporate bonds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	19.3	21.1
Evergy Metro | Pension Benefits | Corporate bonds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Corporate bonds | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | U.S. Treasury and agency bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	13.1	10.1
Evergy Metro | Pension Benefits | U.S. Treasury and agency bonds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7.1	5.1
Evergy Metro | Pension Benefits | U.S. Treasury and agency bonds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6	5
Evergy Metro | Pension Benefits | U.S. Treasury and agency bonds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | U.S. Treasury and agency bonds | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Mortgage and asset backed securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4.4	5.1
Evergy Metro | Pension Benefits | Mortgage and asset backed securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Mortgage and asset backed securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4.4	5.1
Evergy Metro | Pension Benefits | Mortgage and asset backed securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Mortgage and asset backed securities | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Real estate investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	42.9	49
Evergy Metro | Pension Benefits | Real estate investments | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Real estate investments | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Real estate investments | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Real estate investments | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	42.9	49
Evergy Metro | Pension Benefits | Combination debt/equity/other fund
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	33.2	28.4
Evergy Metro | Pension Benefits | Combination debt/equity/other fund | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	33.2	28.4
Evergy Metro | Pension Benefits | Combination debt/equity/other fund | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Combination debt/equity/other fund | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Combination debt/equity/other fund | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Alternative investment funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	79.1	70.8
Evergy Metro | Pension Benefits | Alternative investment funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Alternative investment funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Alternative investment funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Alternative investment funds | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	79.1	70.8
Evergy Metro | Pension Benefits | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6.1	5.9
Evergy Metro | Pension Benefits | Cash and cash equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6.1	5.9
Evergy Metro | Pension Benefits | Cash and cash equivalents | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Cash and cash equivalents | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Cash and cash equivalents | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Short-term investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3.8	4
Evergy Metro | Pension Benefits | Short-term investments | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Short-term investments | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Short-term investments | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Short-term investments | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3.8	4
Evergy Metro | Pension Benefits | Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2.8	1.9
Evergy Metro | Pension Benefits | Other | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Other | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2.8	1.9
Evergy Metro | Pension Benefits | Other | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Pension Benefits | Other | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	103.9	102.4	$ 96.7
Evergy Metro | Post-Retirement Benefits | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	81.1	79.8
Evergy Metro | Post-Retirement Benefits | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	22.6	22.4
Evergy Metro | Post-Retirement Benefits | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.2	0.2
Evergy Metro | Post-Retirement Benefits | Domestic equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	20.5	21.8
Evergy Metro | Post-Retirement Benefits | Domestic equities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	20.5	21.8
Evergy Metro | Post-Retirement Benefits | Domestic equities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Domestic equities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Domestic equities | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | International equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	11.3	12.1
Evergy Metro | Post-Retirement Benefits | International equities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	11.3	12.1
Evergy Metro | Post-Retirement Benefits | International equities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | International equities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | International equities | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Bond funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	37.6	36.8
Evergy Metro | Post-Retirement Benefits | Bond funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	37.6	36.8
Evergy Metro | Post-Retirement Benefits | Bond funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Bond funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Bond funds | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	14.5	15
Evergy Metro | Post-Retirement Benefits | Corporate bonds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Corporate bonds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	14.5	15
Evergy Metro | Post-Retirement Benefits | Corporate bonds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Corporate bonds | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | U.S. Treasury and agency bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	14	12.2
Evergy Metro | Post-Retirement Benefits | U.S. Treasury and agency bonds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6.7	6.1
Evergy Metro | Post-Retirement Benefits | U.S. Treasury and agency bonds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7.3	6.1
Evergy Metro | Post-Retirement Benefits | U.S. Treasury and agency bonds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | U.S. Treasury and agency bonds | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Mortgage and asset backed securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.6	1
Evergy Metro | Post-Retirement Benefits | Mortgage and asset backed securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Mortgage and asset backed securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.6	1
Evergy Metro | Post-Retirement Benefits | Mortgage and asset backed securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Mortgage and asset backed securities | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Combination debt/equity/other fund
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3.3	3
Evergy Metro | Post-Retirement Benefits | Combination debt/equity/other fund | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3.3	3
Evergy Metro | Post-Retirement Benefits | Combination debt/equity/other fund | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Combination debt/equity/other fund | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Combination debt/equity/other fund | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1.7
Evergy Metro | Post-Retirement Benefits | Cash and cash equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1.7
Evergy Metro | Post-Retirement Benefits | Cash and cash equivalents | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Evergy Metro | Post-Retirement Benefits | Cash and cash equivalents | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Evergy Metro | Post-Retirement Benefits | Cash and cash equivalents | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Evergy Metro | Post-Retirement Benefits | Short-term investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.2	0.2
Evergy Metro | Post-Retirement Benefits | Short-term investments | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Short-term investments | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Short-term investments | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Short-term investments | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.2	0.2
Evergy Metro | Post-Retirement Benefits | Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.2	0.3
Evergy Metro | Post-Retirement Benefits | Other | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Other | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.2	0.3
Evergy Metro | Post-Retirement Benefits | Other | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Evergy Metro | Post-Retirement Benefits | Other | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 0	$ 0

PENSION PLANS AND POST-RETIR_11

PENSION PLANS AND POST-RETIREMENT BENEFITS - Cost Trend Assumptions (Details) - Post-Retirement Benefits	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Assumed annual health care cost growth rates
Health care cost trend rate assumed for next year	7%	6.90%
Rate to which the cost trend is assumed to decline (the ultimate trend rate)	4.50%	4.50%
Year that rate reaches ultimate trend	2032	2030
Evergy Kansas Central
Assumed annual health care cost growth rates
Health care cost trend rate assumed for next year		6.90%
Rate to which the cost trend is assumed to decline (the ultimate trend rate)		4.50%
Year that rate reaches ultimate trend		2030
Evergy Metro
Assumed annual health care cost growth rates
Health care cost trend rate assumed for next year	7%	6.90%
Rate to which the cost trend is assumed to decline (the ultimate trend rate)	4.50%	4.50%
Year that rate reaches ultimate trend	2032	2030

PENSION PLANS AND POST-RETIR_12

PENSION PLANS AND POST-RETIREMENT BENEFITS - Employee Savings Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, cost	$ 25.8	$ 24.1	$ 25.3
Evergy Kansas Central
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, cost	12.2	11.3	12
Evergy Metro
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, cost	$ 13.6	$ 12.8	$ 13.3

EQUITY COMPENSATION - Narrative

EQUITY COMPENSATION - Narrative (Details)	12 Months Ended
	Dec. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility, maximum	21%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum	3.53%
Risk-free interest rate, maximum	4.28%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield	5.21%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield	4.15%

EQUITY COMPENSATION - Income Ta

EQUITY COMPENSATION - Income Tax Benefit (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity compensation expense	$ 15.2	$ 17.7	$ 18.8
Income tax benefit	1.9	1.6	2.6
Evergy Kansas Central
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity compensation expense	6.7	6.5	8.4
Income tax benefit	1.5	1.4	1.7
Evergy Metro
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity compensation expense	4.5	5.7	6
Income tax benefit	$ 0	$ (0.6)	$ 0.2

EQUITY COMPENSATION - RSUs (Det

EQUITY COMPENSATION - RSUs (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
RSU With Performance Measures
Nonvested Restricted Share Units
Beginning balance (in shares)	663,727
Granted (in shares)	295,803
Vested (in shares)	(165,464)
Share-Based Compensation Arrangement by Share-Based Payment Award, Other Share Increase (Decrease)	(61,194)
Forfeited (in shares)	(102,185)
Ending balance (in shares)	630,687	663,727
Grant Date Fair Value*
Weighted average beginning balance (in dollars per share)	$ 58.32
Weighted average granted (in dollars per share)	49.94	$ 59.77	$ 57.95
Weighted average, forfeited (in dollars per share)	54.28
Weighted average, vested (in dollars per share)	61.41
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Other Share Increase (Decrease) in Period, Weighted Average Exercise Price	61.41
Weighted average ending balance (in dollars per share)	$ 55.45	$ 58.32
Remaining weighted-average contractual term (in years)	1 year 3 months 18 days
Total unrecognized compensation expense,	$ 12.2
Total fair value of shares	$ 10.2	$ 7.9	$ 5.5
RSUs
Nonvested Restricted Share Units
Beginning balance (in shares)	264,214
Granted (in shares)	199,816
Vested (in shares)	(120,813)
Forfeited (in shares)	(36,562)
Ending balance (in shares)	306,655	264,214
Grant Date Fair Value*
Weighted average beginning balance (in dollars per share)	$ 57.76
Weighted average granted (in dollars per share)	51.22	$ 57.47	$ 60.93
Weighted average, forfeited (in dollars per share)	53.96
Weighted average, vested (in dollars per share)	55.99
Weighted average ending balance (in dollars per share)	$ 54.65	$ 57.76
Remaining weighted-average contractual term (in years)	1 year 4 months 24 days
Total unrecognized compensation expense,	$ 8.4
Total fair value of shares	$ 6.8	$ 3.3	$ 4.7

SHORT-TERM BORROWINGS AND SHO_3

SHORT-TERM BORROWINGS AND SHORT-TERM BANK LINES OF CREDIT - Narrative (Details) $ in Millions	Dec. 31, 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	Dec. 31, 2024	Dec. 31, 2023
Short-term Debt [Line Items]
Master Credit Facility	$ 2,500	$ 2,500
Available Borrowings	1,289.7	1,546.5
Evergy, Inc.
Short-term Debt [Line Items]
Master Credit Facility	300	300
Available Borrowings	$ 223.9	$ 299.3
Weighted Average Interest Rate on Short-Term Borrowings	4.70%	0%
Evergy Kansas Central
Short-term Debt [Line Items]
Master Credit Facility	$ 1,100	$ 750
Available Borrowings	$ 301.7	$ 518.6
Weighted Average Interest Rate on Short-Term Borrowings	4.74%	5.56%
Evergy Metro
Short-term Debt [Line Items]
Master Credit Facility	$ 600	$ 750
Available Borrowings	$ 440.3	$ 326.7
Weighted Average Interest Rate on Short-Term Borrowings	4.64%	5.58%
Evergy Missouri West
Short-term Debt [Line Items]
Master Credit Facility	$ 500	$ 700
Available Borrowings	$ 323.8	$ 401.9
Weighted Average Interest Rate on Short-Term Borrowings	4.71%	5.66%
Commercial Paper
Short-term Debt [Line Items]
Line of credit	$ 1,207.6	$ 951.8
Commercial Paper | Evergy, Inc.
Short-term Debt [Line Items]
Line of credit	75.4	0
Commercial Paper | Evergy Kansas Central
Short-term Debt [Line Items]
Line of credit	797.3	230.4
Commercial Paper | Evergy Metro
Short-term Debt [Line Items]
Line of credit	158.7	423.3
Commercial Paper | Evergy Missouri West
Short-term Debt [Line Items]
Line of credit	176.2	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 (Details)

LONG-TERM DEBT (Details) - USD ($)	Dec. 31, 2024	Sep. 30, 2024	May 31, 2024	Apr. 30, 2024	Feb. 28, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Interest rate	5.06%
Current maturities of long-term debt	$ (651,700,000)					$ (800,000,000)
Unamortized debt discount and debt issuance costs	(112,700,000)					(106,000,000)
Total excluding current maturities	11,809,200,000					11,053,300,000
Fair Value adjustment
Debt Instrument [Line Items]
Long-term debt gross	81,700,000					87,000,000
Current maturities of long-term debt	$ 500,000					$ 0
Mortgage Bonds | Mortgage Bonds Due 2025 EKC
Debt Instrument [Line Items]
Interest rate	3.25%					3.25%
Long-term debt gross	$ 250,000,000					$ 250,000,000
Mortgage Bonds | Mortgage Bonds Due 2026 EKC
Debt Instrument [Line Items]
Interest rate	2.55%					2.55%
Long-term debt gross	$ 350,000,000					$ 350,000,000
Mortgage Bonds | Mortgage Bonds Due 2027 EKC
Debt Instrument [Line Items]
Interest rate	3.10%					3.10%
Long-term debt gross	$ 300,000,000					$ 300,000,000
Mortgage Bonds | Mortgage Bonds Due 2033 EKC
Debt Instrument [Line Items]
Interest rate	5.90%					5.90%
Long-term debt gross	$ 300,000,000					$ 300,000,000
Mortgage Bonds | Mortgage Bonds Due 2042 EKC
Debt Instrument [Line Items]
Interest rate	4.125%					4.125%
Long-term debt gross	$ 550,000,000					$ 550,000,000
Mortgage Bonds | Mortgage Bonds Due 2043 EKC
Debt Instrument [Line Items]
Interest rate	4.10%					4.10%
Long-term debt gross	$ 430,000,000					$ 430,000,000
Mortgage Bonds | Mortgage Bonds Due 2043 EKC
Debt Instrument [Line Items]
Interest rate	4.625%					4.625%
Long-term debt gross	$ 250,000,000					$ 250,000,000
Mortgage Bonds | Mortgage Bonds Due 2045 EKC
Debt Instrument [Line Items]
Interest rate	4.25%					4.25%
Long-term debt gross	$ 300,000,000					$ 300,000,000
Mortgage Bonds | Mortgage Bonds Due 2049 EKC
Debt Instrument [Line Items]
Interest rate	3.25%					3.25%
Long-term debt gross	$ 300,000,000					$ 300,000,000
Mortgage Bonds | Mortgage Bonds Due 2050 EKC
Debt Instrument [Line Items]
Interest rate	3.45%					3.45%
Long-term debt gross	$ 500,000,000					$ 500,000,000
Mortgage Bonds | Mortgage Bonds Due 2053 EKC
Debt Instrument [Line Items]
Interest rate	5.70%					5.70%
Long-term debt gross	$ 400,000,000					$ 400,000,000
Mortgage Bonds | Mortgage Bonds Due 2037 EKS
Debt Instrument [Line Items]
Interest rate	6.53%					6.53%
Long-term debt gross	$ 175,000,000					$ 175,000,000
Mortgage Bonds | Mortgage Bonds Due 2038 EKS
Debt Instrument [Line Items]
Interest rate	6.64%					6.64%
Long-term debt gross	$ 100,000,000					$ 100,000,000
Mortgage Bonds | Mortgage Bonds Due 2044 EKS
Debt Instrument [Line Items]
Interest rate	4.30%					4.30%
Long-term debt gross	$ 250,000,000					$ 250,000,000
Mortgage Bonds | Mortgage Bonds Due 2030 EM
Debt Instrument [Line Items]
Interest rate	2.25%					2.25%
Long-term debt gross	$ 400,000,000					$ 400,000,000
Mortgage Bonds | Mortgage Bonds Due 2033 EM
Debt Instrument [Line Items]
Interest rate	4.95%					4.95%
Long-term debt gross	$ 300,000,000					$ 300,000,000
Mortgage Bonds | Mortgage Bonds Due 2049 EM
Debt Instrument [Line Items]
Interest rate	4.125%					4.125%
Long-term debt gross	$ 400,000,000					$ 400,000,000
Mortgage Bonds | Mortgage Bonds Due 2027 EM
Debt Instrument [Line Items]
Interest rate	5.15%					5.15%
Long-term debt gross	$ 300,000,000					$ 300,000,000
Mortgage Bonds | Mortgage Bonds Due 2032 EMW
Debt Instrument [Line Items]
Interest rate	3.75%					3.75%
Long-term debt gross	$ 250,000,000					$ 250,000,000
Mortgage Bonds | Mortgage Bonds Due 2034 EMW
Debt Instrument [Line Items]
Interest rate	5.65%
Long-term debt gross	$ 300,000,000
Mortgage Bonds | MortgageBondsDue2034
Debt Instrument [Line Items]
Interest rate	5.40%
Long-term debt gross	$ 300,000,000
Mortgage Bonds | EIRRBondsDue2045EM
Debt Instrument [Line Items]
Interest rate	4.30%					4.30%
Long-term debt gross	$ 79,500,000					$ 79,500,000
Pollution Control Bonds | Pollution Control Bonds Due 2032A EKC
Debt Instrument [Line Items]
Interest rate	3.19%					3.66%
Long-term debt gross	$ 45,000,000					$ 45,000,000
Pollution Control Bonds | Pollution Control Bonds Due 2032B EKC
Debt Instrument [Line Items]
Interest rate	3.19%					3.66%
Long-term debt gross	$ 30,500,000					$ 30,500,000
Pollution Control Bonds | Pollution Control Bonds Due 2027 EKS
Debt Instrument [Line Items]
Interest rate	3.19%					3.66%
Long-term debt gross	$ 21,900,000					$ 21,900,000
Pollution Control Bonds | Pollution Control Bonds Due 2031 EKS
Debt Instrument [Line Items]
Interest rate	2.50%					2.50%
Long-term debt gross	$ 50,000,000					$ 50,000,000
Pollution Control Bonds | Pollution Control Bonds Due 2032A EKS
Debt Instrument [Line Items]
Interest rate	3.19%					3.66%
Long-term debt gross	$ 14,500,000					$ 14,500,000
Pollution Control Bonds | Pollution Control Bonds Due 2032B EKS
Debt Instrument [Line Items]
Interest rate	3.19%					3.66%
Long-term debt gross	$ 10,000,000					$ 10,000,000
Pollution Control Bonds | EIRR Bonds Series 2007A and 2007B due 2035 EM
Debt Instrument [Line Items]
Interest rate	3.45%					3.83%
Long-term debt gross	$ 146,500,000					$ 146,500,000
Pollution Control Bonds | EIRR Bonds Series 2007A and 2007B due 2038 EM
Debt Instrument [Line Items]
Long-term debt gross	$ 23,400,000
Pollution Control Bonds | EIRR Bonds Due 2038 EM
Debt Instrument [Line Items]
Interest rate	3.50%					3.50%
Long-term debt gross						$ 23,400,000
Senior Notes | Senior Notes Due 2025 EM
Debt Instrument [Line Items]
Interest rate	3.65%					3.65%
Long-term debt gross	$ 350,000,000					$ 350,000,000
Senior Notes | Senior Notes Due 2035 EM
Debt Instrument [Line Items]
Interest rate	6.05%					6.05%
Long-term debt gross	$ 250,000,000					$ 250,000,000
Senior Notes | Senior Notes Due 2035A EM
Debt Instrument [Line Items]
Interest rate	5.78%					5.78%
Senior Notes | Senior Notes Due 2041 EM
Debt Instrument [Line Items]
Interest rate	5.30%					5.30%
Long-term debt gross	$ 400,000,000					$ 400,000,000
Senior Notes | Senior Notes Due 2047 EM
Debt Instrument [Line Items]
Interest rate	4.20%					4.20%
Long-term debt gross	$ 300,000,000					$ 300,000,000
Senior Notes | Senior Notes Due 2048 EM
Debt Instrument [Line Items]
Interest rate	4.20%					4.20%
Long-term debt gross	$ 300,000,000					$ 300,000,000
Senior Notes | Senior Notes Due 2025 EMW
Debt Instrument [Line Items]
Interest rate	3.49%					3.49%
Long-term debt gross	$ 36,000,000					$ 36,000,000
Senior Notes | Senior Notes Due 2033 EMW
Debt Instrument [Line Items]
Interest rate	4.06%					4.06%
Long-term debt gross	$ 60,000,000					$ 60,000,000
Senior Notes | Senior Notes Due 2043 EMW
Debt Instrument [Line Items]
Interest rate	4.74%					4.74%
Long-term debt gross	$ 150,000,000					$ 150,000,000
Senior Notes | Senior Notes Series A due 2031 EMW
Debt Instrument [Line Items]
Interest rate	2.86%					2.86%
Long-term debt gross	$ 350,000,000					$ 350,000,000
Senior Notes | Senior Notes Series B due 2033 EMW
Debt Instrument [Line Items]
Interest rate	3.01%					3.01%
Long-term debt gross	$ 75,000,000					$ 75,000,000
Senior Notes | Senior Notes Series C due 2036 EMW
Debt Instrument [Line Items]
Interest rate	3.21%					3.21%
Long-term debt gross	$ 75,000,000					$ 75,000,000
Senior Notes | Senior Notes Due 2024
Debt Instrument [Line Items]
Interest rate		2.45%				2.45%
Long-term debt gross		$ 800,000,000				$ 800,000,000
Senior Notes | Senior Notes Due 2029
Debt Instrument [Line Items]
Interest rate	2.90%					2.90%
Long-term debt gross	$ 800,000,000					$ 800,000,000
Senior Notes | Senior Notes Due 2029A
Debt Instrument [Line Items]
Interest rate	3.77%					3.77%
Convertible Notes Payable | Convertible Notes Due 2027
Debt Instrument [Line Items]
Interest rate	4.50%					4.50%
Long-term debt gross	$ 1,400,000,000					$ 1,400,000,000
Securitized Bonds | SecuritizedBondsDue2040EMW [Member]
Debt Instrument [Line Items]
Interest rate	5.10%
Long-term debt gross	$ 319,600,000
Junior Notes | Junior Subordinated Notes Due 2055
Debt Instrument [Line Items]
Interest rate	6.65%
Long-term debt gross	$ 500,000,000
Evergy Kansas Central
Debt Instrument [Line Items]
Current maturities of long-term debt	(250,000,000)					0
Unamortized debt discount and debt issuance costs	(43,400,000)					(46,500,000)
Total excluding current maturities	4,333,500,000					4,580,400,000
Evergy Kansas Central | Fair Value adjustment
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Mortgage Bonds | Mortgage Bonds Due 2025 EKC
Debt Instrument [Line Items]
Long-term debt gross	250,000,000					250,000,000
Evergy Kansas Central | Mortgage Bonds | Mortgage Bonds Due 2026 EKC
Debt Instrument [Line Items]
Long-term debt gross	350,000,000					350,000,000
Evergy Kansas Central | Mortgage Bonds | Mortgage Bonds Due 2027 EKC
Debt Instrument [Line Items]
Long-term debt gross	300,000,000					300,000,000
Evergy Kansas Central | Mortgage Bonds | Mortgage Bonds Due 2033 EKC
Debt Instrument [Line Items]
Long-term debt gross	300,000,000					300,000,000
Evergy Kansas Central | Mortgage Bonds | Mortgage Bonds Due 2042 EKC
Debt Instrument [Line Items]
Long-term debt gross	550,000,000					550,000,000
Evergy Kansas Central | Mortgage Bonds | Mortgage Bonds Due 2043 EKC
Debt Instrument [Line Items]
Long-term debt gross	430,000,000					430,000,000
Evergy Kansas Central | Mortgage Bonds | Mortgage Bonds Due 2043 EKC
Debt Instrument [Line Items]
Long-term debt gross	250,000,000					250,000,000
Evergy Kansas Central | Mortgage Bonds | Mortgage Bonds Due 2045 EKC
Debt Instrument [Line Items]
Long-term debt gross	300,000,000					300,000,000
Evergy Kansas Central | Mortgage Bonds | Mortgage Bonds Due 2049 EKC
Debt Instrument [Line Items]
Long-term debt gross	300,000,000					300,000,000
Evergy Kansas Central | Mortgage Bonds | Mortgage Bonds Due 2050 EKC
Debt Instrument [Line Items]
Long-term debt gross	500,000,000					500,000,000
Evergy Kansas Central | Mortgage Bonds | Mortgage Bonds Due 2053 EKC
Debt Instrument [Line Items]
Long-term debt gross	400,000,000					400,000,000
Evergy Kansas Central | Mortgage Bonds | Mortgage Bonds Due 2037 EKS
Debt Instrument [Line Items]
Long-term debt gross	175,000,000					175,000,000
Evergy Kansas Central | Mortgage Bonds | Mortgage Bonds Due 2038 EKS
Debt Instrument [Line Items]
Long-term debt gross	100,000,000					100,000,000
Evergy Kansas Central | Mortgage Bonds | Mortgage Bonds Due 2044 EKS
Debt Instrument [Line Items]
Long-term debt gross	250,000,000					250,000,000
Evergy Kansas Central | Mortgage Bonds | Mortgage Bonds Due 2030 EM
Debt Instrument [Line Items]
Long-term debt gross	0
Evergy Kansas Central | Mortgage Bonds | Mortgage Bonds Due 2033 EM
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Mortgage Bonds | Mortgage Bonds Due 2049 EM
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Mortgage Bonds | Mortgage Bonds Due 2027 EM
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Mortgage Bonds | Mortgage Bonds Due 2032 EMW
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Mortgage Bonds | Mortgage Bonds Due 2034 EMW
Debt Instrument [Line Items]
Long-term debt gross	0
Evergy Kansas Central | Mortgage Bonds | MortgageBondsDue2034
Debt Instrument [Line Items]
Long-term debt gross	0
Evergy Kansas Central | Mortgage Bonds | EIRRBondsDue2045EM
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Pollution Control Bonds | Pollution Control Bonds Due 2032A EKC
Debt Instrument [Line Items]
Long-term debt gross	45,000,000					45,000,000
Evergy Kansas Central | Pollution Control Bonds | Pollution Control Bonds Due 2032B EKC
Debt Instrument [Line Items]
Long-term debt gross	30,500,000					30,500,000
Evergy Kansas Central | Pollution Control Bonds | Pollution Control Bonds Due 2027 EKS
Debt Instrument [Line Items]
Long-term debt gross	21,900,000					21,900,000
Evergy Kansas Central | Pollution Control Bonds | Pollution Control Bonds Due 2031 EKS
Debt Instrument [Line Items]
Long-term debt gross	50,000,000					50,000,000
Evergy Kansas Central | Pollution Control Bonds | Pollution Control Bonds Due 2032A EKS
Debt Instrument [Line Items]
Long-term debt gross	14,500,000					14,500,000
Evergy Kansas Central | Pollution Control Bonds | Pollution Control Bonds Due 2032B EKS
Debt Instrument [Line Items]
Long-term debt gross	10,000,000					10,000,000
Evergy Kansas Central | Pollution Control Bonds | EIRR Bonds Series 2007A and 2007B due 2035 EM
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Pollution Control Bonds | EIRR Bonds Series 2007A and 2007B due 2038 EM
Debt Instrument [Line Items]
Long-term debt gross	0
Evergy Kansas Central | Pollution Control Bonds | EIRR Bonds Due 2038 EM
Debt Instrument [Line Items]
Long-term debt gross						0
Evergy Kansas Central | Senior Notes | Senior Notes Due 2025 EM
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Senior Notes | Senior Notes Due 2035 EM
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Senior Notes | Senior Notes Due 2041 EM
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Senior Notes | Senior Notes Due 2047 EM
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Senior Notes | Senior Notes Due 2048 EM
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Senior Notes | Senior Notes Due 2025 EMW
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Senior Notes | Senior Notes Due 2033 EMW
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Senior Notes | Senior Notes Due 2043 EMW
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Senior Notes | Senior Notes Series A due 2031 EMW
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Senior Notes | Senior Notes Series B due 2033 EMW
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Senior Notes | Senior Notes Series C due 2036 EMW
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Senior Notes | Senior Notes Due 2024
Debt Instrument [Line Items]
Long-term debt gross						0
Evergy Kansas Central | Senior Notes | Senior Notes Due 2029
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Convertible Notes Payable | Convertible Notes Due 2027
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Securitized Bonds | SecuritizedBondsDue2040EMW [Member]
Debt Instrument [Line Items]
Long-term debt gross	0
Evergy Kansas Central | Junior Notes | Junior Subordinated Notes Due 2055
Debt Instrument [Line Items]
Long-term debt gross	0
Evergy Metro
Debt Instrument [Line Items]
Current maturities of long-term debt	(350,000,000)					0
Unamortized debt discount and debt issuance costs	(26,000,000)					(25,000,000)
Total excluding current maturities	2,873,400,000					2,924,400,000
Evergy Metro | Fair Value adjustment
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Mortgage Bonds | Mortgage Bonds Due 2025 EKC
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Mortgage Bonds | Mortgage Bonds Due 2026 EKC
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Mortgage Bonds | Mortgage Bonds Due 2027 EKC
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Mortgage Bonds | Mortgage Bonds Due 2033 EKC
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Mortgage Bonds | Mortgage Bonds Due 2042 EKC
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Mortgage Bonds | Mortgage Bonds Due 2043 EKC
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Mortgage Bonds | Mortgage Bonds Due 2043 EKC
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Mortgage Bonds | Mortgage Bonds Due 2045 EKC
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Mortgage Bonds | Mortgage Bonds Due 2049 EKC
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Mortgage Bonds | Mortgage Bonds Due 2050 EKC
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Mortgage Bonds | Mortgage Bonds Due 2053 EKC
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Mortgage Bonds | Mortgage Bonds Due 2037 EKS
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Mortgage Bonds | Mortgage Bonds Due 2038 EKS
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Mortgage Bonds | Mortgage Bonds Due 2044 EKS
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Mortgage Bonds | Mortgage Bonds Due 2030 EM
Debt Instrument [Line Items]
Long-term debt gross	400,000,000
Evergy Metro | Mortgage Bonds | Mortgage Bonds Due 2033 EM
Debt Instrument [Line Items]
Long-term debt gross	300,000,000					300,000,000
Evergy Metro | Mortgage Bonds | Mortgage Bonds Due 2049 EM
Debt Instrument [Line Items]
Long-term debt gross	400,000,000					400,000,000
Evergy Metro | Mortgage Bonds | Mortgage Bonds Due 2027 EM
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Mortgage Bonds | Mortgage Bonds Due 2032 EMW
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Mortgage Bonds | General Mortgage Bonds EIRR Series 2005
Debt Instrument [Line Items]
Long-term debt gross	50,000,000					21,900,000
Evergy Metro | Mortgage Bonds | Mortgage Bonds Due 2034 EMW
Debt Instrument [Line Items]
Long-term debt gross	0
Evergy Metro | Mortgage Bonds | MortgageBondsDue2034
Debt Instrument [Line Items]
Interest rate				5.40%
Long-term debt gross	300,000,000			$ 300,000,000
Evergy Metro | Mortgage Bonds | EIRRBondsDue2045EM
Debt Instrument [Line Items]
Long-term debt gross	79,500,000					79,500,000
Evergy Metro | Pollution Control Bonds | Pollution Control Bonds Due 2032A EKC
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Pollution Control Bonds | Pollution Control Bonds Due 2032B EKC
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Pollution Control Bonds | Pollution Control Bonds Due 2027 EKS
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Pollution Control Bonds | Pollution Control Bonds Due 2031 EKS
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Pollution Control Bonds | Pollution Control Bonds Due 2032A EKS
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Pollution Control Bonds | Pollution Control Bonds Due 2032B EKS
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Pollution Control Bonds | EIRR Bonds Series 2007A and 2007B due 2035 EM
Debt Instrument [Line Items]
Long-term debt gross	146,500,000					146,500,000
Evergy Metro | Pollution Control Bonds | EIRR Bonds Series 2007A and 2007B due 2038 EM
Debt Instrument [Line Items]
Long-term debt gross	23,400,000
Evergy Metro | Pollution Control Bonds | EIRR Bonds Due 2038 EM
Debt Instrument [Line Items]
Long-term debt gross						23,400,000
Evergy Metro | Senior Notes | Senior Notes Due 2025 EM
Debt Instrument [Line Items]
Long-term debt gross	350,000,000					350,000,000
Evergy Metro | Senior Notes | Senior Notes Due 2035 EM
Debt Instrument [Line Items]
Long-term debt gross	250,000,000					250,000,000
Evergy Metro | Senior Notes | Senior Notes Due 2041 EM
Debt Instrument [Line Items]
Long-term debt gross	400,000,000					400,000,000
Evergy Metro | Senior Notes | Senior Notes Due 2047 EM
Debt Instrument [Line Items]
Long-term debt gross	300,000,000					300,000,000
Evergy Metro | Senior Notes | Senior Notes Due 2048 EM
Debt Instrument [Line Items]
Long-term debt gross	300,000,000					300,000,000
Evergy Metro | Senior Notes | Senior Notes Due 2025 EMW
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Senior Notes | Senior Notes Due 2033 EMW
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Senior Notes | Senior Notes Due 2043 EMW
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Senior Notes | Senior Notes Series A due 2031 EMW
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Senior Notes | Senior Notes Series B due 2033 EMW
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Senior Notes | Senior Notes Series C due 2036 EMW
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Senior Notes | Senior Notes Due 2024
Debt Instrument [Line Items]
Long-term debt gross						0
Evergy Metro | Senior Notes | Senior Notes Due 2029
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Convertible Notes Payable | Convertible Notes Due 2027
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Securitized Bonds | SecuritizedBondsDue2040EMW [Member]
Debt Instrument [Line Items]
Long-term debt gross	0
Evergy Metro | Junior Notes | Junior Subordinated Notes Due 2055
Debt Instrument [Line Items]
Long-term debt gross	0
Evergy Missouri West | SecuritizedBondsDue2040EMW [Member]
Debt Instrument [Line Items]
Long-term debt gross					$ 331,100,000
Evergy Missouri West | Mortgage Bonds | Mortgage Bonds Due 2034 EMW
Debt Instrument [Line Items]
Interest rate			5.65%
Long-term debt gross			$ 300,000,000
Evergy Missouri West | Securitized Bonds | SecuritizedBondsDue2040EMW [Member]
Debt Instrument [Line Items]
Interest rate					5.10%
Long-term debt gross					$ 331,100,000
Variable Interest Entities
Debt Instrument [Line Items]
Current maturities of long-term debt	(16,200,000)					0
Total excluding current maturities	$ 295,700,000					$ 0

LONG-TERM DEBT - Narrative (Det

LONG-TERM DEBT - Narrative (Details)	12 Months Ended
	Dec. 31, 2024 USD ($) $ / shares	Sep. 30, 2024 USD ($)	May 31, 2024 USD ($)	Apr. 30, 2024 USD ($)	Feb. 28, 2024 USD ($)	Dec. 31, 2023 USD ($)
Debt Instrument [Line Items]
Interest rate	5.06%
Current maturities of long-term debt	$ 651,700,000					$ 800,000,000
Long-Term debt fair value adjustment
Debt Instrument [Line Items]
Long-term debt gross	81,700,000					87,000,000
Current maturities of long-term debt	(500,000)					0
Secured Debt | MortgageBondsDue2034
Debt Instrument [Line Items]
Long-term debt gross	$ 300,000,000
Interest rate	5.40%
Secured Debt | Mortgage Bonds Due 2034 EMW
Debt Instrument [Line Items]
Long-term debt gross	$ 300,000,000
Interest rate	5.65%
Senior Notes
Debt Instrument [Line Items]
Debt Instrument, priority debt percentage of tangible net worth, maximum	15%
Senior Notes | Senior Notes Due 2024
Debt Instrument [Line Items]
Long-term debt gross		$ 800,000,000				$ 800,000,000
Interest rate		2.45%				2.45%
Securitized Bonds | SecuritizedBondsDue2040EMW [Member]
Debt Instrument [Line Items]
Long-term debt gross	$ 319,600,000
Interest rate	5.10%
Convertible Notes Payable | Convertible Notes Due 2027
Debt Instrument [Line Items]
Long-term debt gross	$ 1,400,000,000					$ 1,400,000,000
Interest rate	4.50%					4.50%
Debt Instrument, Convertible, Threshold Trading Days	20
Debt Instrument, Convertible, Threshold Consecutive Trading Days	30
Debt Instrument, Convertible, Conversion Ratio	16.1809
Debt Instrument, Convertible, Conversion Price | $ / shares	$ 61.80
Debt Instrument, Redemption Price, Percentage	100%
Junior Notes | Junior Subordinated Notes Due 2055
Debt Instrument [Line Items]
Long-term debt gross	$ 500,000,000
Interest rate	6.65%
Debt Instrument, Basis Spread on Variable Rate	2.558%
Debt conversion terms one | Convertible Notes Payable | Convertible Notes Due 2027
Debt Instrument [Line Items]
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger	130%
Debt conversion terms two | Convertible Notes Payable | Convertible Notes Due 2027
Debt Instrument [Line Items]
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger	98%
Evergy Kansas Central
Debt Instrument [Line Items]
FirstMortgageBondsAdditionalPrincipalAvailableToBeIssued	$ 420,500,000
Current maturities of long-term debt	250,000,000					$ 0
Evergy Kansas Central | Long-Term debt fair value adjustment
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Secured Debt | MortgageBondsDue2034
Debt Instrument [Line Items]
Long-term debt gross	0
Evergy Kansas Central | Secured Debt | Mortgage Bonds Due 2034 EMW
Debt Instrument [Line Items]
Long-term debt gross	0
Evergy Kansas Central | Senior Notes | Senior Notes Due 2024
Debt Instrument [Line Items]
Long-term debt gross						0
Evergy Kansas Central | Securitized Bonds | SecuritizedBondsDue2040EMW [Member]
Debt Instrument [Line Items]
Long-term debt gross	0
Evergy Kansas Central | Convertible Notes Payable | Convertible Notes Due 2027
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Kansas Central | Junior Notes | Junior Subordinated Notes Due 2055
Debt Instrument [Line Items]
Long-term debt gross	0
Evergy Metro
Debt Instrument [Line Items]
FirstMortgageBondsAdditionalPrincipalAvailableToBeIssued	$ 5,552,700,000
Percentage of Bondable Property Allowed	75%
Current maturities of long-term debt	$ 350,000,000					0
Evergy Metro | Long-Term debt fair value adjustment
Debt Instrument [Line Items]
Long-term debt gross	0					0
Evergy Metro | Secured Debt | MortgageBondsDue2034
Debt Instrument [Line Items]
Long-term debt gross	300,000,000			$ 300,000,000
Interest rate				5.40%
Evergy Metro | Secured Debt | Mortgage Bonds Due 2034 EMW
Debt Instrument [Line Items]
Long-term debt gross	0
Evergy Metro | Senior Notes | Senior Notes Due 2024
Debt Instrument [Line Items]
Long-term debt gross						0
Evergy Metro | Securitized Bonds | SecuritizedBondsDue2040EMW [Member]
Debt Instrument [Line Items]
Long-term debt gross	0
Evergy Metro | Convertible Notes Payable | Convertible Notes Due 2027
Debt Instrument [Line Items]
Long-term debt gross	0					$ 0
Evergy Metro | Junior Notes | Junior Subordinated Notes Due 2055
Debt Instrument [Line Items]
Long-term debt gross	0
Evergy Missouri West
Debt Instrument [Line Items]
FirstMortgageBondsAdditionalPrincipalAvailableToBeIssued	$ 2,137,200,000
Evergy Missouri West | SecuritizedBondsDue2040EMW [Member]
Debt Instrument [Line Items]
Long-term debt gross					$ 331,100,000
Evergy Missouri West | Secured Debt | Mortgage Bonds Due 2034 EMW
Debt Instrument [Line Items]
Long-term debt gross			$ 300,000,000
Interest rate			5.65%
Evergy Missouri West | Senior Notes
Debt Instrument [Line Items]
Debt Instrument, debt to capitalization ratio (no more than)	65%
Evergy Missouri West | Securitized Bonds | SecuritizedBondsDue2040EMW [Member]
Debt Instrument [Line Items]
Long-term debt gross					$ 331,100,000
Interest rate					5.10%
Evergy Kansas South Inc
Debt Instrument [Line Items]
Maximum Amount Of First Mortgage Bonds Authorized	$ 3,500,000,000
FirstMortgageBondsAdditionalPrincipalAvailableToBeIssued	$ 2,878,600,000

LONG-TERM DEBT - Scheduled Matu

LONG-TERM DEBT - Scheduled Maturities (Details) $ in Millions	Dec. 31, 2024 USD ($)
Debt Instrument [Line Items]
2025	$ 652.2
2026	367
2027	2,039.8
2028	18.8
2029	819.8
Evergy Kansas Central
Debt Instrument [Line Items]
2025	250
2026	350
2027	321.9
2028	0
2029	0
Evergy Metro
Debt Instrument [Line Items]
2025	350
2026	0
2027	0
2028	0
2029	$ 0

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities - Narrative (Details) $ in Millions	Dec. 31, 2024 USD ($)
Derivative, Credit Risk Related Contingent Features [Abstract]
Derivative, Net Liability Position, Aggregate Fair Value	$ 44.2
Credit Derivatives [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	40.5
Additional Collateral, Aggregate Fair Value	41.7
Collateral Already Posted, Aggregate Fair Value	2.5
Credit Derivative, Maximum Exposure, After Master Netting and Collateral	27.6
Evergy Kansas Central
Credit Derivatives [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	40.5
Additional Collateral, Aggregate Fair Value	41.7
Collateral Already Posted, Aggregate Fair Value	2.5
Credit Derivative, Maximum Exposure, After Master Netting and Collateral	$ 27.6

Derivative Instruments - Notion

Derivative Instruments - Notional Amounts (Details) - Not Designated as Hedging Instrument [Member] MWh in Millions, MMBTU in Millions	12 Months Ended
	Dec. 31, 2024 MMBTU MWh	Dec. 31, 2023 MWh MMBTU
Natural gas commodity contract
Price Risk Derivatives [Abstract]
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	598.7	559.9
Power commodity contract
Price Risk Derivatives [Abstract]
Derivative, Nonmonetary Notional Amount, Energy Measure	51.3	52.9
Evergy Kansas Central | Natural gas commodity contract
Price Risk Derivatives [Abstract]
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	598.7	558.7
Evergy Kansas Central | Power commodity contract
Price Risk Derivatives [Abstract]
Derivative, Nonmonetary Notional Amount, Energy Measure	31.3	32.1
Evergy Metro | Power commodity contract
Price Risk Derivatives [Abstract]
Derivative, Nonmonetary Notional Amount, Energy Measure	15.3	15.1

Derivative Instruments Offsetti

Derivative Instruments Offsetting Assets (Details) - USD ($) $ in Millions	Dec. 31, 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	$ 13.1	$ 12.9
Derivative Asset, Noncurrent	$ 33.9	$ 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	$ 87.4	$ 133
Commodity contract current
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]
Derivative Asset, Fair Value, Gross Asset	41.5	91.3
FIN 39 Derivative asset netting
Gross amounts offset	(28.4)	(78.4)
Commodity contract noncurrent
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]
Derivative Asset, Fair Value, Gross Asset	45.9	41.7
FIN 39 Derivative asset netting
Gross amounts offset	(12)	(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	24.6	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	43.8	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	16.9	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	2.1	6
Evergy Kansas Central
FIN 39 Derivative asset netting
Derivative Asset, Current	2.5	11.1
Derivative Asset, Noncurrent	33.9	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	74.1	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	28.2	86.4
FIN 39 Derivative asset netting
Gross amounts offset	(25.7)	(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	45.9	41.7
FIN 39 Derivative asset netting
Gross amounts offset	(12)	(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	11.3	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	43.8	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	16.9	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	2.1	6
Evergy Metro
FIN 39 Derivative asset netting
Derivative Asset, Current	8.1	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	10.1	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	10.1	2.1
FIN 39 Derivative asset netting
Gross amounts offset	(2)	(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	$ 10.1	$ 2.1

Derivative Instruments Offset_2

Derivative Instruments Offsetting Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset [Abstract]
Derivative Liability, Current	$ 6	$ 11.6
Derivative Liability, Noncurrent	$ 39.8	$ 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	$ 75.7	$ 128.8
Power commodity contract noncurrent | Not Designated as Hedging Instrument [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	41.5	32.9
Commodity contract current
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	32.1	89.1
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset [Abstract]
FIN 39 Derivative liability netting	(26.1)	(77.5)
Commodity contract noncurrent
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	43.6	39.7
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset [Abstract]
FIN 39 Derivative liability netting	(3.8)	(5.9)
Power commodity contract current | Not Designated as Hedging Instrument [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	14.2	21
Natural gas commodity contract current | Not Designated as Hedging Instrument [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	17.9	68.1
Natural gas commodity contract noncurrent | Not Designated as Hedging Instrument [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	2.1	6.8
Evergy Kansas Central
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset [Abstract]
Derivative Liability, Current	6	6.9
Derivative Liability, Noncurrent	39.8	33.8
Evergy Kansas Central | Not Designated as Hedging Instrument [Member]
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	73	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	41.5	32.9
Evergy Kansas Central | Commodity contract current
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	29.4	81.3
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset [Abstract]
FIN 39 Derivative liability netting	(23.4)	(74.4)
Evergy Kansas Central | Commodity contract noncurrent
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	43.6	39.7
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset [Abstract]
FIN 39 Derivative liability netting	(3.8)	(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	11.5	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	17.9	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	2.1	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	2	5.7
Evergy Metro | Commodity contract current
Derivative, Fair Value, Net [Abstract]
Derivative Liability, Fair Value, Gross Liability	2	5.7
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset [Abstract]
FIN 39 Derivative liability netting	(2)	(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	$ 2	$ 5.7

Derivative Instruments Fair Val

Derivative Instruments Fair Value (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 87.4	$ 133
Power commodity contract current | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	24.6	23.2
Power commodity contract noncurrent | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	43.8	35.7
Natural gas commodity contract noncurrent | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	2.1	6
Natural gas commodity contract current | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	16.9	68.1
Commodity contract current
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	41.5	91.3
Commodity contract noncurrent
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 45.9	$ 41.7

Derivative Instruments Gain and

Derivative Instruments Gain and Losses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 23.6	$ 22.9	$ 84.6
Commodity Contract [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	23.6	22.9	84.6
Evergy Kansas Central
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	23.6	22.9	84.6
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	$ 23.6	$ 22.9	$ 84.6

FAIR VALUE MEASUREMENTS - Long-

FAIR VALUE MEASUREMENTS - Long-Term Debt (Details) - USD ($) $ in Millions	Dec. 31, 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	$ 12,460.9	$ 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	11,535	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	4,583.5	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	4,031.7	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	3,223.4	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	2,966.3	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	81.7	87
Long-Term debt fair value adjustment | Evergy Kansas Central
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt gross	0	0
Long-Term debt fair value adjustment | Evergy Metro
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt gross	$ 0	$ 0

FAIR VALUE MEASUREMENTS - Recur

FAIR VALUE MEASUREMENTS - Recurring (Details) - USD ($) $ in Millions	Dec. 31, 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	$ 879.8	$ 766.4
Total rabbi trust	31.4	33.3
Derivative Asset	47	42.7
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(40.4)	(90.3)
Total self-insured health plan trust	18.9	15.7
Total Assets	977.1	858.1
Derivative Liability	45.8	45.4
FIN 39 Derivative liability netting	(29.9)	(83.4)
Total Liabilities	45.8	45.4
Fair Value, Measurements, Recurring | Level 1
Assets
Total nuclear decommissioning trust	764.2	653.7
Total rabbi trust	31.4	33.3
Derivative Asset, Fair Value, Gross Asset	30.6	89
Total self-insured health plan trust	7.8	8.8
Total Assets	834	784.8
Derivative Liability, Fair Value, Gross Liability	24.4	82
Total Liabilities	24.4	82
Fair Value, Measurements, Recurring | Level 2
Assets
Total nuclear decommissioning trust	44.8	47.8
Total rabbi trust	0	0
Derivative Asset, Fair Value, Gross Asset	40.6	33.6
Total self-insured health plan trust	11.1	6.9
Total Assets	96.5	88.3
Derivative Liability, Fair Value, Gross Liability	44.3	36.9
Total Liabilities	44.3	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	16.2	10.4
Total self-insured health plan trust	0	0
Total Assets	16.2	10.4
Derivative Liability, Fair Value, Gross Liability	7	9.9
Total Liabilities	7	9.9
Fair Value, Measurements, Recurring | NAV
Assets
Total nuclear decommissioning trust	70.8	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	70.8	64.9
Derivative Liability, Fair Value, Gross Liability	0	0
Total Liabilities	0	0
Fair Value, Measurements, Recurring | Power commodity contract
Assets
Derivative Asset	45.7	42
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(22.7)	(16.9)
Derivative Liability	43.5	43.9
FIN 39 Derivative liability netting	(12.2)	(10)
Fair Value, Measurements, Recurring | Power commodity contract | Level 1
Assets
Derivative Asset, Fair Value, Gross Asset	11.7	16.3
Derivative Liability, Fair Value, Gross Liability	4.5	9.4
Fair Value, Measurements, Recurring | Power commodity contract | Level 2
Assets
Derivative Asset, Fair Value, Gross Asset	40.5	32.2
Derivative Liability, Fair Value, Gross Liability	44.2	34.6
Fair Value, Measurements, Recurring | Power commodity contract | Level 3
Assets
Derivative Asset, Fair Value, Gross Asset	16.2	10.4
Derivative Liability, Fair Value, Gross Liability	7	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	1.3	0.7
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(17.7)	(73.4)
Derivative Liability	2.3	1.5
FIN 39 Derivative liability netting	(17.7)	(73.4)
Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 1
Assets
Derivative Asset, Fair Value, Gross Asset	18.9	72.7
Derivative Liability, Fair Value, Gross Liability	19.9	72.6
Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 2
Assets
Derivative Asset, Fair Value, Gross Asset	0.1	1.4
Derivative Liability, Fair Value, Gross Liability	0.1	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	$ 407.9	$ 365.1
Total rabbi trust	23.4	24.5
Derivative Asset	36.4	40.9
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(37.7)	(87.2)
Total Assets	467.7	430.5
Derivative Liability	45.8	40.7
FIN 39 Derivative liability netting	(27.2)	(80.3)
Total Liabilities	45.8	40.7
Evergy Kansas Central | Fair Value, Measurements, Recurring | Core bond fund
Assets
Total nuclear decommissioning trust	66.7	56.2
Evergy Kansas Central | Fair Value, Measurements, Recurring | High-yield bond fund
Assets
Total nuclear decommissioning trust	33.7	29.1
Evergy Kansas Central | Fair Value, Measurements, Recurring | Emerging markets bond fund
Assets
Total nuclear decommissioning trust	20.6	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	45.6	37.9
Evergy Kansas Central | Fair Value, Measurements, Recurring | Real estate securities fund
Assets
Total nuclear decommissioning trust	16.3	17.2
Evergy Kansas Central | Fair Value, Measurements, Recurring | Cash equivalents
Assets
Total nuclear decommissioning trust	0.5	0.7
Total rabbi trust	0.2	0.2
Evergy Kansas Central | Fair Value, Measurements, Recurring | Equity funds
Assets
Total rabbi trust	6.9	7.4
Evergy Kansas Central | Fair Value, Measurements, Recurring | Fixed income funds
Assets
Total rabbi trust	14.6	15.2
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1
Assets
Total nuclear decommissioning trust	337.1	300.2
Total rabbi trust	23.4	24.5
Derivative Asset, Fair Value, Gross Asset	30.6	89
Total Assets	391.1	413.7
Derivative Liability, Fair Value, Gross Liability	24.4	82
Total Liabilities	24.4	82
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | Core bond fund
Assets
Total nuclear decommissioning trust	66.7	56.2
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | High-yield bond fund
Assets
Total nuclear decommissioning trust	33.7	29.1
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | Emerging markets bond fund
Assets
Total nuclear decommissioning trust	20.6	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	0.5	0.7
Total rabbi trust	0.2	0.2
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | Equity funds
Assets
Total rabbi trust	6.9	7.4
Evergy Kansas Central | Fair Value, Measurements, Recurring | Level 1 | Fixed income funds
Assets
Total rabbi trust	14.6	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	40.6	33.6
Total Assets	40.6	33.6
Derivative Liability, Fair Value, Gross Liability	44.3	35.8
Total Liabilities	44.3	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	2.9	5.5
Total Assets	2.9	5.5
Derivative Liability, Fair Value, Gross Liability	4.3	3.2
Total Liabilities	4.3	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	70.8	64.9
Total rabbi trust	0	0
Derivative Asset, Fair Value, Gross Asset	0	0
Total Assets	70.8	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	45.6	37.9
Evergy Kansas Central | Fair Value, Measurements, Recurring | NAV | Real estate securities fund
Assets
Total nuclear decommissioning trust	16.3	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	35.1	40.2
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(20)	(13.8)
Derivative Liability	43.5	40.3
FIN 39 Derivative liability netting	(9.5)	(6.9)
Evergy Kansas Central | Fair Value, Measurements, Recurring | Power commodity contract | Level 1
Assets
Derivative Asset, Fair Value, Gross Asset	11.7	16.3
Derivative Liability, Fair Value, Gross Liability	4.5	9.4
Evergy Kansas Central | Fair Value, Measurements, Recurring | Power commodity contract | Level 2
Assets
Derivative Asset, Fair Value, Gross Asset	40.5	32.2
Derivative Liability, Fair Value, Gross Liability	44.2	34.6
Evergy Kansas Central | Fair Value, Measurements, Recurring | Power commodity contract | Level 3
Assets
Derivative Asset, Fair Value, Gross Asset	2.9	5.5
Derivative Liability, Fair Value, Gross Liability	4.3	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	1.3	0.7
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(17.7)	(73.4)
Derivative Liability	2.3	0.4
FIN 39 Derivative liability netting	(17.7)	(73.4)
Evergy Kansas Central | Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 1
Assets
Derivative Asset, Fair Value, Gross Asset	18.9	72.7
Derivative Liability, Fair Value, Gross Liability	19.9	72.6
Evergy Kansas Central | Fair Value, Measurements, Recurring | Natural gas commodity contract | Level 2
Assets
Derivative Asset, Fair Value, Gross Asset	0.1	1.4
Derivative Liability, Fair Value, Gross Liability	0.1	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	142.9	133.1
Evergy Kansas Central | Domestic | Fair Value, Measurements, Recurring | Level 1 | Equity securities
Assets
Total nuclear decommissioning trust	134	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	8.9	9.8
Evergy Kansas Central | International | Fair Value, Measurements, Recurring | Equity securities
Assets
Total nuclear decommissioning trust	81.6	72.6
Evergy Kansas Central | International | Fair Value, Measurements, Recurring | Level 1 | Equity securities
Assets
Total nuclear decommissioning trust	81.6	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	$ 471.9	$ 401.3
Derivative Asset	8.1	0
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(2)	(2.1)
Total self-insured health plan trust	18.9	15.7
Total Assets	498.9	417
Derivative Liability	0	3.6
FIN 39 Derivative liability netting	(2)	(2.1)
Total Liabilities	0	3.6
Evergy Metro | Fair Value, Measurements, Recurring | Equity securities
Assets
Total nuclear decommissioning trust	368.8	302.4
Total self-insured health plan trust	2.3	2
Evergy Metro | Fair Value, Measurements, Recurring | Cash equivalents
Assets
Total nuclear decommissioning trust	3	3.2
Evergy Metro | Fair Value, Measurements, Recurring | U.S. Treasury
Assets
Total nuclear decommissioning trust	55.3	47.9
Evergy Metro | Fair Value, Measurements, Recurring | State and local obligations
Assets
Total nuclear decommissioning trust	2.1	3.8
Evergy Metro | Fair Value, Measurements, Recurring | Corporate bonds
Assets
Total nuclear decommissioning trust	42.7	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	14.3	9.4
Evergy Metro | Fair Value, Measurements, Recurring | Cash and cash equivalents
Assets
Total self-insured health plan trust	2.3	4.3
Evergy Metro | Fair Value, Measurements, Recurring | Level 1
Assets
Total nuclear decommissioning trust	427.1	353.5
Derivative Asset, Fair Value, Gross Asset	0	0
Total self-insured health plan trust	7.8	8.8
Total Assets	434.9	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	368.8	302.4
Total self-insured health plan trust	2.3	2
Evergy Metro | Fair Value, Measurements, Recurring | Level 1 | Cash equivalents
Assets
Total nuclear decommissioning trust	3	3.2
Evergy Metro | Fair Value, Measurements, Recurring | Level 1 | U.S. Treasury
Assets
Total nuclear decommissioning trust	55.3	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	3.2	2.5
Evergy Metro | Fair Value, Measurements, Recurring | Level 1 | Cash and cash equivalents
Assets
Total self-insured health plan trust	2.3	4.3
Evergy Metro | Fair Value, Measurements, Recurring | Level 2
Assets
Total nuclear decommissioning trust	44.8	47.8
Derivative Asset, Fair Value, Gross Asset	0	0
Total self-insured health plan trust	11.1	6.9
Total Assets	55.9	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	2.1	3.8
Evergy Metro | Fair Value, Measurements, Recurring | Level 2 | Corporate bonds
Assets
Total nuclear decommissioning trust	42.7	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	11.1	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	10.1	2.1
Total self-insured health plan trust	0	0
Total Assets	10.1	2.1
Derivative Liability, Fair Value, Gross Liability	2	5.7
Total Liabilities	2	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	8.1	0
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(2)	(2.1)
Derivative Liability	0	3.6
FIN 39 Derivative liability netting	(2)	(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	10.1	2.1
Derivative Liability, Fair Value, Gross Liability	2	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	$ 8.8
Derivative Asset	2.5	1.8
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(0.7)	(1)
Total Assets	10.5	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	8.8
Other Evergy | Fair Value, Measurements, Recurring | Level 1
Assets
Total rabbi trust	8	8.8
Derivative Asset, Fair Value, Gross Asset	0	0
Total Assets	8	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	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	3.2	2.8
Total Assets	3.2	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	2.5	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	3.2	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	12 Months Ended
	Dec. 31, 2024 USD ($) fund	Dec. 31, 2023 USD ($)
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	$ 1.3	$ 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	$ 1.3	1.4
NAV, number of funds | fund	4
Fair Value, Measurements, Recurring
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	$ 879.8	766.4
Total rabbi trust	31.4	33.3
Total Assets	977.1	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	407.9	365.1
Total rabbi trust	23.4	24.5
Total Assets	467.7	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	45.6	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	16.3	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	66.7	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	8.8
Total Assets	10.5	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	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	142.9	133.1
NAV | Fair Value, Measurements, Recurring
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Total nuclear decommissioning trust	70.8	64.9
Total rabbi trust	0	0
Total Assets	70.8	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	70.8	64.9
Total rabbi trust	0	0
Total Assets	70.8	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	$ 45.6	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	$ 16.3	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	$ 8.9	$ 9.8

FAIR VALUE MEASUREMENTS - Gains

FAIR VALUE MEASUREMENTS - Gains (Losses) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gains (losses)	$ 88.6	$ 85.5	$ (145.6)
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)	$ 89.3	80.4	(123.3)
Nuclear decommissioning trust - debt securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gains (losses)	(1.1)	2.7	(15.2)
Rabbi trusts - equity securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gains (losses)	0.4	2.4	(7.1)
Evergy Kansas Central
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gains (losses)	$ 31.5	30.3	(68.2)
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)	$ 31.1	28.3	(62.8)
Evergy Kansas Central | Rabbi trusts - equity securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gains (losses)	0.4	2	(5.4)
Evergy Metro
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gains (losses)	$ 57.1	54.8	(75.7)
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)	$ 58.2	52.1	(60.5)
Evergy Metro | Nuclear decommissioning trust - debt securities
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Unrealized gains (losses)	$ (1.1)	$ 2.7	$ (15.2)

COMMITMENTS AND CONTINGENCIES -

COMMITMENTS AND CONTINGENCIES - Narrative (Details) $ in Millions	Dec. 31, 2024 USD ($)
Estimates Of Environmental Financial Impact And Related Issues [Line Items]
Industry aggregate limit for nuclear insurance	$ 3,200
Industry aggregate limit for non nuclear insurance	1,800
Nuclear liability insurance, full limit of public liability	16,300
Nuclear liability insurance, maximum available commercial insurance	500
Nuclear liability insurance, industry wide retrospective assessment program	15,800
Nuclear liability insurance, owners insurance amount, maximum	165.9
Nuclear liability insurance, owners insurance, amount per incident	24.7
Nuclear liability insurance, owners property insurance, maximum	2,800
Nuclear liability insurance, owners nonnuclear property insurance, maximum	1,000
Nuclear liability insurance, owners property insurance assessment, maximum	26.1
Evergy
Estimates Of Environmental Financial Impact And Related Issues [Line Items]
Nuclear liability insurance, owners insurance amount, maximum	156
Nuclear liability insurance, owners insurance, amount per incident	23.2
Nuclear liability insurance, owners property insurance assessment, maximum	24.6
Evergy Kansas Central
Estimates Of Environmental Financial Impact And Related Issues [Line Items]
Nuclear liability insurance, owners insurance amount, maximum	78
Nuclear liability insurance, owners insurance, amount per incident	11.6
Nuclear liability insurance, owners property insurance assessment, maximum	12.3
Evergy Metro
Estimates Of Environmental Financial Impact And Related Issues [Line Items]
Nuclear liability insurance, owners insurance amount, maximum	78
Nuclear liability insurance, owners insurance, amount per incident	11.6
Nuclear liability insurance, owners property insurance assessment, maximum	$ 12.3

COMMITMENTS AND CONTINGENCIES_2

COMMITMENTS AND CONTINGENCIES - Contractual Commitments (Details) $ in Millions	Dec. 31, 2024 USD ($)
Unrecorded Unconditional Purchase Obligations and Lease Commitments [Line Items]
2024	$ 305.7
2025	286.7
2026	179.1
2027	168.6
2028	169.5
After 2029	259.4
Total	1,369
Fuel
Unrecorded Unconditional Purchase Obligations and Lease Commitments [Line Items]
2024	247.3
2025	228.3
2026	120.7
2027	111.5
2028	109.6
After 2029	141
Total	958.4
Power
Unrecorded Unconditional Purchase Obligations and Lease Commitments [Line Items]
2024	58.4
2025	58.4
2026	58.4
2027	57.1
2028	59.9
After 2029	118.4
Total	410.6
Evergy Kansas Central
Unrecorded Unconditional Purchase Obligations and Lease Commitments [Line Items]
2024	145
2025	133.1
2026	64.7
2027	59.9
2028	53.7
After 2029	71
Total	527.4
Evergy Kansas Central | Fuel
Unrecorded Unconditional Purchase Obligations and Lease Commitments [Line Items]
2024	144.1
2025	132.2
2026	63.8
2027	59
2028	52.8
After 2029	70.6
Total	522.5
Evergy Kansas Central | Power
Unrecorded Unconditional Purchase Obligations and Lease Commitments [Line Items]
2024	0.9
2025	0.9
2026	0.9
2027	0.9
2028	0.9
After 2029	0.4
Total	4.9
Evergy Metro
Unrecorded Unconditional Purchase Obligations and Lease Commitments [Line Items]
2024	117.4
2025	112.8
2026	78.4
2027	79.7
2028	86
After 2029	149.8
Total	624.1
Evergy Metro | Fuel
Unrecorded Unconditional Purchase Obligations and Lease Commitments [Line Items]
2024	88.2
2025	83.6
2026	49.2
2027	50.5
2028	56.8
After 2029	70.4
Total	398.7
Evergy Metro | Power
Unrecorded Unconditional Purchase Obligations and Lease Commitments [Line Items]
2024	29.2
2025	29.2
2026	29.2
2027	29.2
2028	29.2
After 2029	79.4
Total	$ 225.4

GUARANTEES (Details)

GUARANTEES (Details) $ in Millions	Dec. 31, 2024 USD ($)
Guarantor Obligations [Line Items]
Maximum exposure	$ 794
Guarantee | Evergy Kansas Central
Guarantor Obligations [Line Items]
Maximum exposure	48
Guarantee | Evergy Metro
Guarantor Obligations [Line Items]
Maximum exposure	48
Guarantee of Indebtedness of Others | Evergy Missouri West
Guarantor Obligations [Line Items]
Maximum exposure	$ 746

RELATED PARTY TRANSACTIONS AN_3

RELATED PARTY TRANSACTIONS AND RELATIONSHIPS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
Due to Related Party, Current	$ (613.8)	$ (616.9)
Lease liability recorded in other current liabilities	14.6
Evergy Metro
Related Party Transaction [Line Items]
Due to Related Party, Current	(252.8)	(272.5)
Lease liability recorded in other current liabilities	7.4
Evergy Metro | Evergy Missouri West
Related Party Transaction [Line Items]
Due from Related Party, Current	86.2	91.9
Evergy Metro | Evergy Missouri West | Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	111.3	124.6	$ 140.5
Evergy Metro | Evergy Kansas Central
Related Party Transaction [Line Items]
Due from Related Party, Current	22.9	19.6
Evergy Metro | Evergy Kansas Central | Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	144.6	132.9	238.4
Evergy Metro | Evergy
Related Party Transaction [Line Items]
Due from Related Party, Current	16.8	15.9
Evergy Metro | Evergy | Income Tax Receivable
Related Party Transaction [Line Items]
Due to Related Party, Current	(10)	(6.8)
Evergy Metro | Related Party [Member]
Related Party Transaction [Line Items]
Due from Related Party, Current	126.1	128.5
Due to Related Party, Current	(0.2)	(1.1)
Evergy Metro | 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
Evergy Kansas Central
Related Party Transaction [Line Items]
Due to Related Party, Current	(281.5)	(244.7)
Lease liability recorded in other current liabilities	6.9
Evergy Kansas Central | Evergy Missouri West
Related Party Transaction [Line Items]
Due from Related Party, Current	23	11.3
Evergy Kansas Central | Evergy Missouri West | Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	29.6	33	32.7
Evergy Kansas Central | Evergy Metro
Related Party Transaction [Line Items]
Due to Related Party, Current	(22.9)	(19.6)
Evergy Kansas Central | Evergy Metro | Operating Expenses and Capital Costs Billed
Related Party Transaction [Line Items]
Related party transaction	46.9	48.4	$ 33.1
Evergy Kansas Central | Evergy
Related Party Transaction [Line Items]
Due to Related Party, Current	(13.4)	(274.5)
Evergy Kansas Central | Evergy | Income Taxes Payable
Related Party Transaction [Line Items]
Due from Related Party, Current	11.4	11.5
Evergy Kansas Central | Related Party [Member]
Related Party Transaction [Line Items]
Due from Related Party, Current	23.4	11.6
Due to Related Party, Current	(36.7)	(294.4)
Evergy Kansas Central | Related Party [Member] | Evergy Inc Money Pool
Related Party Transaction [Line Items]
Due from Related Party, Current	0
Due to Related Party, Current	$ 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%
Jeffrey Energy Center | Evergy Missouri West
Related Party Transaction [Line Items]
Jointly owned utility plant, proportionate ownership share	8%
La Cygne Station | Evergy Kansas Central
Related Party Transaction [Line Items]
Jointly owned utility plant, proportionate ownership share	50%

SHAREHOLDERS' EQUITY - Narrativ

SHAREHOLDERS' EQUITY - Narrative (Details) $ in Millions	Dec. 31, 2024 USD ($) shares
Line of Credit Facility [Line Items]
Preferred stock, shares authorized (in shares) | shares	12,000,000
Restriction on payment of dividends (at least)	35%
Restricted net assets of subsidiaries	$ 6,300
Evergy Kansas Central
Line of Credit Facility [Line Items]
Restriction on payment of dividends (at least)	40%
Retained earnings restrictions	$ 290.5
Evergy Metro
Line of Credit Facility [Line Items]
Restriction on payment of dividends (at least)	40%
Retained earnings restrictions	$ 464.9

VARIABLE INTEREST ENTITIES - Na

VARIABLE INTEREST ENTITIES - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Feb. 28, 2024
Variable Interest Entity [Line Items]
Interest rate	5.06%
SecuritizedBondsDue2040EMW [Member] | Securitized Bonds
Variable Interest Entity [Line Items]
Long-term debt gross	$ 319.6
Interest rate	5.10%
La Cygne Unit 2 [Member]
Variable Interest Entity [Line Items]
VIE ownership percentage	50%
Evergy Kansas Central | SecuritizedBondsDue2040EMW [Member] | Securitized Bonds
Variable Interest Entity [Line Items]
Long-term debt gross	$ 0
Evergy Kansas Central | La Cygne Unit 2 [Member]
Variable Interest Entity [Line Items]
VIE ownership percentage	50%
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	Dec. 31, 2024	Dec. 31, 2023
Assets [Abstract]
Property, plant and equipment, net	$ 24,930.9	$ 23,728.7
Regulatory assets, includes $15.9 and $— related to variable interest entity, respectively	180.9	292.1
Other	6.2	0
Regulatory assets	1,719.3	1,795.3
Other	1.7	0
Liabilities [Abstract]
Current maturities of long-term debt	651.7	800
Accrued interest	136.4	134.2
Long-term debt, net	11,809.2	11,053.3
Variable Interest Entities
Assets [Abstract]
Property, plant and equipment, net	126.5	133.6
Regulatory assets, includes $15.9 and $— related to variable interest entity, respectively	15.9	0
Other	5.4
Regulatory assets	294.5	0
Other	1.7
Liabilities [Abstract]
Current maturities of long-term debt	16.2	0
Accrued interest	1.3	0
Long-term debt, net	295.7	0
Evergy Kansas Central
Assets [Abstract]
Property, plant and equipment, net	12,880.1	12,121.9
Regulatory assets, includes $15.9 and $— related to variable interest entity, respectively	79.7	127.7
Regulatory assets	446.6	505.2
Liabilities [Abstract]
Current maturities of long-term debt	250	0
Accrued interest	79.2	79.7
Long-term debt, net	4,333.5	4,580.4
Evergy Kansas Central | Variable Interest Entities
Assets [Abstract]
Property, plant and equipment, net	$ 126.5	$ 133.6

TAXES - Income Tax Expense (Det

TAXES - Income Tax Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current Federal Tax Expense (Benefit)	$ 30.9	$ 25.3	$ 31.9
Current State and Local Tax Expense (Benefit)	7.7	6.9	8.3
Current Income Tax Expense (Benefit), Total	38.6	32.2	40.2
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred Federal Income Tax Expense (Benefit)	30	10.2	17.2
Deferred State and Local Income Tax Expense (Benefit)	(31.4)	(21.7)	(3.4)
Deferred Income Tax Expense (Benefit), Total	(1.4)	(11.5)	13.8
Investment Tax Credits
Deferral	0	2.2	0
Investment tax credit amortization	(7.2)	(7.3)	(6.5)
Total	(7.2)	(5.1)	(6.5)
Income Tax Expense (Benefit), Total	$ 30	$ 15.6	$ 47.5
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21%	21%	21%
Effect Of [Abstract]
COLI policies	(1.30%)	(1.90%)	(1.20%)
State income taxes	(2.20%)	(1.90%)	0.30%
Flow through depreciation for plant-related differences	(6.00%)	(8.00%)	(8.40%)
Federal tax credits	(7.00%)	(6.20%)	(4.00%)
Non-controlling interest	(0.30%)	(0.30%)	(0.30%)
AFUDC equity	(0.40%)	(0.30%)	(0.60%)
Amortization of federal investment tax credits	(0.60%)	(0.70%)	(0.60%)
Valuation allowance	0%	0.40%	0%
Stock compensation	0%	0%	(0.20%)
Officer compensation limitation	0.20%	0.30%	0.30%
Other	(0.10%)	(0.40%)	(0.50%)
Effective Income Tax Rate Reconciliation, Percent, Total	3.30%	2%	5.80%
Evergy Kansas Central
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current Federal Tax Expense (Benefit)	$ 6.2	$ 27.8	$ 95.8
Current State and Local Tax Expense (Benefit)	4.7	4.7	3.9
Current Income Tax Expense (Benefit), Total	10.9	32.5	99.7
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred Federal Income Tax Expense (Benefit)	16.4	(29.3)	(78.7)
Deferred State and Local Income Tax Expense (Benefit)	(11.3)	(7.4)	(4.6)
Deferred Income Tax Expense (Benefit), Total	5.1	(36.7)	(83.3)
Investment Tax Credits
Deferral	0	2.2	0
Investment tax credit amortization	(3.8)	(3.9)	(4.1)
Total	(3.8)	(1.7)	(4.1)
Income Tax Expense (Benefit), Total	$ 12.2	$ (5.9)	$ 12.3
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21%	21%	21%
Effect Of [Abstract]
COLI policies	(2.00%)	(3.60%)	(2.20%)
State income taxes	(1.10%)	(1.00%)	(0.40%)
Flow through depreciation for plant-related differences	(3.60%)	(5.00%)	(6.60%)
Federal tax credits	(10.40%)	(11.70%)	(7.20%)
Non-controlling interest	(0.40%)	(0.70%)	(0.60%)
AFUDC equity	(0.50%)	(0.40%)	(0.40%)
Amortization of federal investment tax credits	(0.40%)	(0.60%)	(0.50%)
Valuation allowance	0%	0.70%	0%
Stock compensation	0%	0%	(0.20%)
Officer compensation limitation	0%	0%	0.10%
Other	(0.50%)	(0.30%)	(0.20%)
Effective Income Tax Rate Reconciliation, Percent, Total	2.10%	(1.60%)	2.80%
Evergy Metro
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current Federal Tax Expense (Benefit)	$ 37.7	$ 13.2	$ (21.9)
Current State and Local Tax Expense (Benefit)	3.6	3.7	4.1
Current Income Tax Expense (Benefit), Total	41.3	16.9	(17.8)
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred Federal Income Tax Expense (Benefit)	15.8	33.6	69.9
Deferred State and Local Income Tax Expense (Benefit)	(13)	(7.8)	0.6
Deferred Income Tax Expense (Benefit), Total	2.8	25.8	70.5
Investment Tax Credits
Investment tax credit amortization	(3.2)	(3.5)	(2.4)
Income Tax Expense (Benefit), Total	$ 40.9	$ 39.2	$ 50.3
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21%	21%	21%
Effect Of [Abstract]
COLI policies	(0.10%)	(0.10%)	(0.10%)
State income taxes	(2.00%)	(0.90%)	0.90%
Flow through depreciation for plant-related differences	(5.60%)	(7.60%)	(7.20%)
Federal tax credits	(1.00%)	(0.70%)	(0.10%)
AFUDC equity	(0.40%)	(0.30%)	(0.70%)
Amortization of federal investment tax credits	(0.90%)	(0.90%)	(0.60%)
Stock compensation	0.20%	0.10%	(0.20%)
Officer compensation limitation	0.40%	0.50%	0.50%
Other	(0.40%)	(0.50%)	(1.10%)
Effective Income Tax Rate Reconciliation, Percent, Total	11.20%	10.60%	12.40%

TAXES - Deferred Income Taxes (

TAXES - Deferred Income Taxes (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
Tax credit carryforward	$ 393.2	$ 288.9
Income taxes refundable to customers, net	308.2	289.4
Deferred employee benefit costs	98.4	101.5
Net operating loss carryforward	4.4	22.5
Deferred state income taxes	132.2	141
Accrued liabilities	198	185.9
Deferred Tax Assets, Regulatory Assets and Liabilities	92.4	132
Other	99.6	121.7
Total deferred tax assets before valuation allowance	1,326.4	1,282.9
Valuation allowances	(6.9)	(14.8)
Total deferred tax assets, net	1,319.5	1,268.1
Deferred tax liabilities:
Plant-related	(2,844.9)	(2,818.4)
Deferred employee benefit costs	(0.5)	(11.1)
ARO regulatory assets	(34.2)	(37.4)
Deferred Tax Liabilities, Regulatory Assets	200.6	231.3
Acquisition premium	(177.2)	(159.1)
Other	(97.8)	(108.7)
Total deferred tax liabilities	(3,355.2)	(3,366)
Net deferred income tax liabilities	(2,035.7)	(2,097.9)
Evergy Kansas Central
Deferred tax assets:
Tax credit carryforward	296.5	242.7
Income taxes refundable to customers, net	160.5	149.1
Deferred employee benefit costs	42.4	52.1
Net operating loss carryforward	0	0
Deferred state income taxes	95.7	99.2
Accrued liabilities	92.6	85.9
Deferred Tax Assets, Regulatory Assets and Liabilities	62.8	86.4
Other	46.4	64.2
Total deferred tax assets before valuation allowance	796.9	779.6
Valuation allowances	(2.7)	(2.7)
Total deferred tax assets, net	794.2	776.9
Deferred tax liabilities:
Plant-related	(1,407.6)	(1,397.1)
Deferred employee benefit costs	0	(10.6)
ARO regulatory assets	(34.2)	(37.4)
Deferred Tax Liabilities, Regulatory Assets	31.3	43.6
Acquisition premium	(76.4)	(67.2)
Other	(50.3)	(65.2)
Total deferred tax liabilities	(1,599.8)	(1,621.1)
Net deferred income tax liabilities	(805.6)	(844.2)
Evergy Metro
Deferred tax assets:
Tax credit carryforward	95.3	43.6
Income taxes refundable to customers, net	115.7	103.6
Deferred employee benefit costs	61.6	58.2
Net operating loss carryforward	0	0
Deferred state income taxes	32.8	36.2
Accrued liabilities	73.8	66.8
Deferred Tax Assets, Regulatory Assets and Liabilities	8	17.1
Other	25.8	25.1
Total deferred tax assets before valuation allowance	413	350.6
Valuation allowances	0	0
Total deferred tax assets, net	413	350.6
Deferred tax liabilities:
Plant-related	(1,030.5)	(1,030.2)
Deferred employee benefit costs	0	0
ARO regulatory assets	0	0
Deferred Tax Liabilities, Regulatory Assets	39.5	34.1
Acquisition premium	(68.4)	(60.3)
Other	(29.9)	(23.2)
Total deferred tax liabilities	(1,168.3)	(1,147.8)
Net deferred income tax liabilities	$ (755.3)	$ (797.2)

TAXES - Tax Credit Carryforward

TAXES - Tax Credit Carryforwards (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	$ 388,300,000
MWh Amount of Nuclear PTC	15
Minimum Per MWh Gross Receipts Nuclear PTC Requirement	25
Maximum Per MWh Gross Receipts Nuclear PTC Requirement	43.75
Evergy Kansas Central
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	291,600,000
Evergy Metro
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	95,300,000
General Business Tax Credit Carryforward
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	388,300,000	$ 284,100,000
Amount of tax credit acquired in business combination	100,000
General Business Tax Credit Carryforward | Evergy Kansas Central
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	291,600,000	237,900,000
General Business Tax Credit Carryforward | Evergy Metro
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	95,300,000	43,600,000
State and Local Jurisdiction
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	4,900,000	4,800,000
Operating loss carryforwards of federal income tax benefit	2,700,000
State and Local Jurisdiction | Evergy Kansas Central
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	4,900,000	$ 4,800,000
Operating loss carryforwards of federal income tax benefit	2,700,000
Nuclear PTC Portion of General Business Tax Credit Carryforward
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	132,300,000
Nuclear PTC Portion of General Business Tax Credit Carryforward | Evergy Kansas Central
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	65,100,000
Nuclear PTC Portion of General Business Tax Credit Carryforward | Evergy Metro
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	67,200,000
Tax Year 2007 [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	100,000
Tax Year 2007 [Member] | Evergy Kansas Central
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	0
Tax Year 2007 [Member] | Evergy Metro
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	0
2018
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	2,100,000
2018 | Evergy Kansas Central
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	2,000,000
2018 | Evergy Metro
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	100,000
2019
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	37,700,000
2019 | Evergy Kansas Central
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	30,800,000
2019 | Evergy Metro
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	6,700,000
2020
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	35,900,000
2020 | Evergy Kansas Central
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	28,500,000
2020 | Evergy Metro
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	7,200,000
Tax Year 2021
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	31,700,000
Tax Year 2021 | Evergy Kansas Central
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	28,100,000
Tax Year 2021 | Evergy Metro
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	3,500,000
Tax Year 2022 [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	34,700,000
Tax Year 2022 [Member] | Evergy Kansas Central
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	31,700,000
Tax Year 2022 [Member] | Evergy Metro
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	2,600,000
Tax Year 2023
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	49,800,000
Tax Year 2023 | Evergy Kansas Central
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	45,300,000
Tax Year 2023 | Evergy Metro
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	4,300,000
Tax Year 2024
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	196,300,000
Tax Year 2024 | Evergy Kansas Central
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	125,200,000
Tax Year 2024 | Evergy Metro
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	$ 70,900,000

TAXES - Net Operating Loss Carr

TAXES - Net Operating Loss Carryforwards (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Operating Loss Carryforwards [Line Items]
Deferred tax benefits		$ 17.2
Tax credit carryforward, amount	$ 388.3
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Deferred tax benefits	4.4	$ 5.3
Operating loss carryforwards of federal income tax benefit	4.2
Evergy Kansas Central
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, amount	291.6
Evergy Metro
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, amount	$ 95.3

TAXES - Valuation Allowance (De

TAXES - Valuation Allowance (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)
Income Tax Disclosure [Abstract]
Tax benefit	$ 7.9

LEASES - Narrative (Details)

LEASES - Narrative (Details)	12 Months Ended
	Dec. 31, 2024
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term	1 year
Minimum | Evergy Kansas Central
Lessee, Lease, Description [Line Items]
Remaining lease term	1 year
Minimum | Evergy Metro
Lessee, Lease, Description [Line Items]
Remaining lease term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term	14 years
Maximum | Evergy Kansas Central
Lessee, Lease, Description [Line Items]
Remaining lease term	14 years
Maximum | Evergy Metro
Lessee, Lease, Description [Line Items]
Remaining lease term	9 years

LEASES - Schedule of Lease Expe

LEASES - Schedule of Lease Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Finance lease costs
Amortization of right-of-use assets	$ 11.1	$ 6.1	$ 5.3
Interest on lease liabilities	2.5	2.3	2.4
Operating lease costs	24	20.5	21.9
Short-term lease costs	3.5	4	4.9
Variable lease costs for renewable purchase power agreements	210.3	266.5	318
Total lease costs	251.4	299.4	352.5
Evergy Kansas Central
Finance lease costs
Amortization of right-of-use assets	8.3	5.5	4.7
Interest on lease liabilities	2.2	2.2	2.2
Operating lease costs	12.3	10	12.1
Short-term lease costs	1.2	1.5	1.4
Variable lease costs for renewable purchase power agreements	71	122.6	155.2
Total lease costs	95	141.8	175.6
Evergy Metro
Finance lease costs
Amortization of right-of-use assets	2.3	0.5	0.5
Interest on lease liabilities	0.2	0.1	0.1
Operating lease costs	9.5	8.6	8.7
Short-term lease costs	1.9	2.2	3.3
Variable lease costs for renewable purchase power agreements	103.9	107.5	122.6
Total lease costs	$ 117.8	$ 118.9	$ 135.2

LEASES - Supplemental Cash Flow

LEASES - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 24.9	$ 20.1	$ 21.1
Operating cash flows from finance leases	2.5	2.3	2.4
Financing cash flows from finance leases	11.7	6.6	5.9
Right-of-use assets obtained in exchange for new operating lease liabilities	7.2	20.1	12.2
Right-of-use assets obtained in exchange for new finance lease liabilities	17	11.9	7
Evergy Kansas Central
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	12.3	9.9	11.4
Operating cash flows from finance leases	2.2	2.1	2.2
Financing cash flows from finance leases	8.7	5.7	5.1
Right-of-use assets obtained in exchange for new operating lease liabilities	5.2	9.2	12
Right-of-use assets obtained in exchange for new finance lease liabilities	13.2	10.2	7
Evergy Metro
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	11.7	9.7	9.3
Operating cash flows from finance leases	0.2	0.1	0.1
Financing cash flows from finance leases	2.5	0.8	0.7
Right-of-use assets obtained in exchange for new operating lease liabilities	1.9	9.9	0.2
Right-of-use assets obtained in exchange for new finance lease liabilities	$ 2.6	$ 1.7	$ 0

LEASES - Schedule of Other Pert

LEASES - Schedule of Other Pertinent Lease Information (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Lessee, Lease, Description [Line Items]
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	PROPERTY, PLANT AND EQUIPMENT, NET, includes $126.5 and $133.6 related to variable interest entity, respectively	PROPERTY, PLANT AND EQUIPMENT, NET, includes $126.5 and $133.6 related to variable interest entity, respectively
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other	Other
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	$ 356.9	$ 323.7
Right-of-use assets under operating leases included in other assets on the consolidated balance sheets	$ 58.3	$ 71.1
Weighted-average remaining lease term (years)	8 years 3 months 18 days	11 years
Weighted-average remaining lease term (years)	5 years 4 months 24 days	5 years 10 months 24 days
Finance Lease, Weighted Average Discount Rate, Percent	5.30%	5.50%
Weighted-average discount rate	4.40%	3.20%
Evergy Kansas Central
Lessee, Lease, Description [Line Items]
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	PROPERTY, PLANT AND EQUIPMENT, NET, includes $126.5 and $133.6 related to variable interest entity, respectively	PROPERTY, PLANT AND EQUIPMENT, NET, includes $126.5 and $133.6 related to variable interest entity, respectively
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other	Other
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	$ 84.5	$ 63.5
Right-of-use assets under operating leases included in other assets on the consolidated balance sheets	$ 17.4	$ 22.8
Weighted-average remaining lease term (years)	9 years 1 month 6 days	11 years 4 months 24 days
Weighted-average remaining lease term (years)	2 years 8 months 12 days	3 years 3 months 18 days
Finance Lease, Weighted Average Discount Rate, Percent	5.30%	5.60%
Weighted-average discount rate	3.80%	4.10%
Evergy Metro
Lessee, Lease, Description [Line Items]
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	PROPERTY, PLANT AND EQUIPMENT, NET, includes $126.5 and $133.6 related to variable interest entity, respectively	PROPERTY, PLANT AND EQUIPMENT, NET, includes $126.5 and $133.6 related to variable interest entity, respectively
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other	Other
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	$ 13	$ 2.9
Right-of-use assets under operating leases included in other assets on the consolidated balance sheets	$ 29.3	$ 35.5
Weighted-average remaining lease term (years)	5 years 3 months 18 days	6 years
Weighted-average remaining lease term (years)	6 years 7 months 6 days	7 years 2 months 12 days
Finance Lease, Weighted Average Discount Rate, Percent	5.20%	5.80%
Weighted-average discount rate	5%	2.50%

LEASES - Schedule of Future Pay

LEASES - Schedule of Future Payments for Finance Leases (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Lessee, Lease, Description [Line Items]
2025	$ 16.4
2026	15.6
2027	15.2
2028	14.2
2029	10.3
After 2029	37.1
Total finance lease payments	108.8
Amounts representing imputed interest	(20.5)
Present value of lease payments	$ 88.3
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other
Less: current portion	$ (13.3)
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other
Total long-term obligations under finance leases	$ 75
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	PROPERTY, PLANT AND EQUIPMENT, NET, includes $126.5 and $133.6 related to variable interest entity, respectively	PROPERTY, PLANT AND EQUIPMENT, NET, includes $126.5 and $133.6 related to variable interest entity, respectively
Right-of-use assets under finance leases included in property, plant and equipment, net, on the consolidated balance sheets	$ 356.9	$ 323.7
Weighted-average remaining lease term (years)	8 years 3 months 18 days	11 years
Weighted-average discount rate	5.30%	5.50%
Evergy Kansas Central
Lessee, Lease, Description [Line Items]
2025	$ 12.5
2026	11.8
2027	11.4
2028	10.8
2029	8.4
After 2029	34.8
Total finance lease payments	89.7
Amounts representing imputed interest	(18.9)
Present value of lease payments	70.8
Less: current portion	(9.8)
Total long-term obligations under finance leases	$ 61
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	PROPERTY, PLANT AND EQUIPMENT, NET, includes $126.5 and $133.6 related to variable interest entity, respectively	PROPERTY, PLANT AND EQUIPMENT, NET, includes $126.5 and $133.6 related to variable interest entity, respectively
Right-of-use assets under finance leases included in property, plant and equipment, net, on the consolidated balance sheets	$ 84.5	$ 63.5
Weighted-average remaining lease term (years)	9 years 1 month 6 days	11 years 4 months 24 days
Weighted-average discount rate	5.30%	5.60%
Evergy Metro
Lessee, Lease, Description [Line Items]
2025	$ 2.9
2026	2.8
2027	2.8
2028	2.6
2029	1.4
After 2029	1.8
Total finance lease payments	14.3
Amounts representing imputed interest	(1.3)
Present value of lease payments	13
Less: current portion	(2.6)
Total long-term obligations under finance leases	$ 10.4
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	PROPERTY, PLANT AND EQUIPMENT, NET, includes $126.5 and $133.6 related to variable interest entity, respectively	PROPERTY, PLANT AND EQUIPMENT, NET, includes $126.5 and $133.6 related to variable interest entity, respectively
Right-of-use assets under finance leases included in property, plant and equipment, net, on the consolidated balance sheets	$ 13	$ 2.9
Weighted-average remaining lease term (years)	5 years 3 months 18 days	6 years
Weighted-average discount rate	5.20%	5.80%

LEASES - Schedule of Future P_2

LEASES - Schedule of Future Payments for Operating Leases (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Lessee, Lease, Description [Line Items]
2025	$ 18.3
2026	13.7
2027	11.1
2028	8
2029	5.2
After 2029	13.3
Total operating lease payments	69.6
Amounts representing imputed interest	(11.9)
Present value of lease payments	$ 57.7
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other
Less: current portion	$ (14.6)
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other
Total long-term obligations under operating leases	$ 43.1
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other	Other
Right-of-use assets under operating leases included in other assets on the consolidated balance sheets	$ 58.3	$ 71.1
Weighted-average remaining lease term (years)	5 years 4 months 24 days	5 years 10 months 24 days
Weighted-average discount rate	4.40%	3.20%
Evergy Kansas Central
Lessee, Lease, Description [Line Items]
2025	$ 8.9
2026	5.8
2027	4.3
2028	2.4
2029	0.3
After 2029	0
Total operating lease payments	21.7
Amounts representing imputed interest	(4.6)
Present value of lease payments	17.1
Less: current portion	(6.9)
Total long-term obligations under operating leases	$ 10.2
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other	Other
Right-of-use assets under operating leases included in other assets on the consolidated balance sheets	$ 17.4	$ 22.8
Weighted-average remaining lease term (years)	2 years 8 months 12 days	3 years 3 months 18 days
Weighted-average discount rate	3.80%	4.10%
Evergy Metro
Lessee, Lease, Description [Line Items]
2025	$ 9.1
2026	7.5
2027	6.5
2028	5.4
2029	4.9
After 2029	13.3
Total operating lease payments	46.7
Amounts representing imputed interest	(7.1)
Present value of lease payments	39.6
Less: current portion	(7.4)
Total long-term obligations under operating leases	$ 32.2
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other	Other
Right-of-use assets under operating leases included in other assets on the consolidated balance sheets	$ 29.3	$ 35.5
Weighted-average remaining lease term (years)	6 years 7 months 6 days	7 years 2 months 12 days
Weighted-average discount rate	5%	2.50%

Segments and Related Informat_3

Segments and Related Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
OPERATING REVENUES	$ 5,847.3	$ 5,508.2	$ 5,859.1
Fuel and purchased power	1,479.9	1,494.8	1,821.2
SPP network transmission costs	370.9	302.6	323
Depreciation and amortization	1,114	1,076.5	929.4
Taxes other than income tax	452.6	406.6	398.1
Sibley Unit 3 impairment loss and other regulatory disallowances	0	0	34.9
Interest expense	563.1	525.8	404
Income tax expense	30	15.6	47.5
Less: Net income attributable to noncontrolling interests	12.3	12.3	12.3
Total other income (expense), net	3.1	(4.8)	(58)
Equity in earnings of equity method investees, net of income taxes	7.8	7.4	7.3
Net income attributable to Evergy, Inc.	873.5	731.3	752.7
Operating Segments [Member] | Evergy Companies
Segment Reporting Information [Line Items]
OPERATING REVENUES	5,847.3	5,508.2	5,859.1
Fuel and purchased power	1,479.9	1,494.8	1,821.2
SPP network transmission costs	370.9	302.6	323
Operations and customer	616.3	594.8	656.9
Support	143.6	133.5	143.2
Other segment costs	202	217	285.2
Depreciation and amortization	1,114	1,076.5	929.4
Taxes other than income tax	452.6	406.6	398.1
Sibley Unit 3 impairment loss and other regulatory disallowances	0	0	34.9
Interest expense	563.1	525.8	404
Income tax expense	30	15.6	47.5
Less: Net income attributable to noncontrolling interests	12.3	12.3	12.3
Total other income (expense), net	3.1	(4.8)	(58)
Equity in earnings of equity method investees, net of income taxes	7.8	7.4	7.3
Net income attributable to Evergy, Inc.	$ 873.5	$ 731.3	$ 752.7

Schedule I Financial Statemen_2

Schedule I Financial Statements of Parent Company Statements of Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
OPERATING EXPENSES:
Operating and maintenance	$ 961.9	$ 945.3	$ 1,085.3
Total Operating Expenses	4,379.3	4,225.8	4,591.9
INCOME FROM OPERATIONS	1,468	1,282.4	1,267.2
OTHER INCOME (EXPENSE):
Equity in earnings from subsidiaries	7.8	7.4	7.3
Other expense	(40.4)	(75.1)	(97.3)
Total Other Income (Expense), Net	3.1	(4.8)	(58)
Interest expense	563.1	525.8	404
INCOME BEFORE INCOME TAXES	908	751.8	805.2
Income tax benefit	30	15.6	47.5
Net income attributable to Evergy, Inc.	873.5	731.3	752.7
COMPREHENSIVE INCOME
NET INCOME	885.8	743.6	765
Derivative hedging activity
Reclassification to expenses, net of tax	5.4	5.4	5.5
Derivative hedging activity, net of tax	5.4	5.4	5.5
Total other comprehensive income	5.8	4.9	9.5
Comprehensive Income, Net of Tax, Attributable to Parent, Total	879.3	736.2	762.2
Parent
OPERATING EXPENSES:
Operating and maintenance	12	6.2	11.5
Total Operating Expenses	12	6.2	11.5
INCOME FROM OPERATIONS	(12)	(6.2)	(11.5)
OTHER INCOME (EXPENSE):
Equity in earnings from subsidiaries	965.8	804.7	816.1
Investment earnings	16.7	0.5	7.1
Other expense	0	(0.1)	(8.3)
Total Other Income (Expense), Net	982.5	805.1	814.9
Interest expense	124.8	91.6	73.9
INCOME BEFORE INCOME TAXES	845.7	707.3	729.5
Income tax benefit	(25.9)	(22.1)	(19.1)
Net income attributable to Evergy, Inc.	871.6	729.4	748.6
Derivative hedging activity
Reclassification to expenses, net of tax	5.4	5.4	5.5
Derivative hedging activity, net of tax	5.4	5.4	5.5
Other comprehensive income (loss) from subsidiaries, net	0.4	(0.5)	4
Total other comprehensive income	5.8	4.9	9.5
Comprehensive Income, Net of Tax, Attributable to Parent, Total	$ 877.4	$ 734.3	$ 758.1

Schedule I Financial Statemen_3

Schedule I Financial Statements of Parent Company Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
CURRENT ASSETS:
Cash and cash equivalents	$ 22	$ 27.7
Income taxes receivable	11.1	11.5
Prepaid expenses and other assets	66.1	51.3
Total Current Assets	1,839.3	1,789.1
OTHER ASSETS:
Other	576.2	560
TOTAL ASSETS	32,282.1	30,976.1
CURRENT LIABILITIES:
Current maturities of long-term debt	651.7	800
Due to Related Party, Current	613.8	616.9
Commercial paper	1,207.6	951.8
Accrued interest	136.4	134.2
Derivative Liability, Current	6	11.6
Other	217.4	213.2
Total Current Liabilities	3,662.4	3,512.6
LONG-TERM LIABILITIES:
Long-term debt, net	11,809.2	11,053.3
Other	311.2	287.9
Total Long-Term Liabilities	18,630.5	17,778.5
Commitments and Contingencies (Note $15)
Evergy, Inc. Shareholders' Equity:
Common stock - 600,000,000 shares authorized, without par value, 229,983,615 and 229,729,296 shares issued	7,245.9	7,234.9
Retained earnings	2,732.9	2,457.8
Accumulated other comprehensive loss	(23.8)	(29.6)
Total Evergy, Inc. Shareholders' Equity	9,955	9,663.1
TOTAL LIABILITIES AND EQUITY	32,282.1	30,976.1
Parent
CURRENT ASSETS:
Cash and cash equivalents	0.1	0
Income taxes receivable	15.5	11.2
Prepaid expenses and other assets	3	0.7
Total Current Assets	77.6	675
OTHER ASSETS:
Investment in subsidiaries	12,523.4	11,867.1
Deferred income taxes	13.3	15.8
Other	1.6	1.7
Total Other Assets	12,538.3	11,884.6
TOTAL ASSETS	12,615.9	12,559.6
CURRENT LIABILITIES:
Current maturities of long-term debt	0	800
Commercial paper	75.4	0
Accrued interest	12	16.7
Other	6	6.8
Total Current Liabilities	124.2	854.3
LONG-TERM LIABILITIES:
Long-term debt, net	2,674.1	2,173.6
Other	9.8	13.9
Total Long-Term Liabilities	2,683.9	2,187.5
Commitments and Contingencies (Note $15)
Evergy, Inc. Shareholders' Equity:
Common stock - 600,000,000 shares authorized, without par value, 229,983,615 and 229,729,296 shares issued	7,229.1	7,218.1
Retained earnings	2,602.5	2,329.3
Accumulated other comprehensive loss	(23.8)	(29.6)
Total Evergy, Inc. Shareholders' Equity	9,807.8	9,517.8
TOTAL LIABILITIES AND EQUITY	12,615.9	12,559.6
Parent | Related Party [Member]
CURRENT ASSETS:
Accounts receivable from subsidiaries	58.4	58.5
Notes receivable from subsidiaries	0.6	604.6
CURRENT LIABILITIES:
Due to Related Party, Current	$ 30.8	$ 30.8

Schedule I Financial Statemen_4

Schedule I Financial Statements of Parent Company Balance Sheet Parenthetical (Details) - shares	Dec. 31, 2024	Dec. 31, 2023
Condensed Balance Sheet Statements, Captions [Line Items]
Common stock - shares authorized (in shares)	600,000,000	600,000,000
Common stock - shares issued (in shares)	229,983,615	229,729,296
Parent
Condensed Balance Sheet Statements, Captions [Line Items]
Common stock - shares authorized (in shares)	600,000,000	600,000,000
Common stock - shares issued (in shares)	229,983,615	229,729,296

Schedule I Financial Statemen_5

Schedule I Financial Statements of Parent Company Statement of Cash Flows (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
NET INCOME ATTRIBUTABLE TO EVERGY, INC.	$ 873.5	$ 731.3	$ 752.7
Adjustments to reconcile income to net cash from operating activities:
Stock compensation	15.2	17.7	18.8
Net deferred income taxes and credits	(8.6)	(16.6)	7.3
Equity in earnings from subsidiaries	(7.8)	(7.4)	(7.3)
Other	0	1.5	0.7
Changes in working capital items:
Prepaid expenses and other current assets	156.5	136.6	(3.1)
Accrued taxes	2.7	(8.6)	32.2
Other current liabilities	(80.7)	(43.8)	0.8
Changes in other assets	8.1	21.7	81
Cash Flows from Operating Activities	1,983.7	1,980.2	1,801.9
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Cash Flows used in Investing Activities	(2,261.8)	(2,471.7)	(2,152.2)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	255.8	(381.9)	172.9
Proceeds from term loan facility	0	0	500
Repayment of term loan facility	0	(500)	0
Proceeds from long-term debt	1,414	2,444.8	567.7
Retirements of long-term debt	(811.5)	(439.5)	(410.9)
Cash dividends paid	(596.7)	(569.6)	(534.8)
Other financing activities	(15.7)	(6.2)	(11.1)
Cash Flows from Financing Activities	280.3	494	349.3
NET CHANGE IN CASH AND CASH EQUIVALENTS	2.2	2.5	(1)
Beginning of period	27.7	25.2	26.2
End of period	29.9	27.7	25.2
Parent
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
NET INCOME ATTRIBUTABLE TO EVERGY, INC.	871.6	729.4	748.6
Adjustments to reconcile income to net cash from operating activities:
Stock compensation	15.3	17.7	18.8
Net deferred income taxes and credits	(0.1)	1.1	(1)
Equity in earnings from subsidiaries	(965.8)	(804.7)	(816.1)
Other	7	7	7.1
Changes in working capital items:
Accounts receivable from subsidiaries	0.1	(14.2)	7.2
Income taxes receivable	(4.3)	(5.3)	9
Prepaid expenses and other current assets	(2.3)	1.5	0
Accounts payable to subsidiaries	0	11	(2.5)
Accrued interest	(4.7)	4.1	0.2
Other current liabilities	(0.3)	(1.9)	(0.8)
Cash dividends from subsidiaries	313	325	645
Changes in other assets	0.1	(0.8)	0.3
Changes in other liabilities	3.7	(2.9)	5.5
Cash Flows from Operating Activities	233.3	267	621.3
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Repayment of intercompany note	0	1.4	287.5
Net money pool lending	604	(574.5)	(29.5)
Equity contribution	(3.1)	0	(200)
Cash Flows used in Investing Activities	600.9	(573.1)	58
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	75.4	(0.5)	(358)
Proceeds from term loan facility	0	0	500
Repayment of term loan facility	0	(500)	0
Proceeds from long-term debt	493.3	1,379.1	0
Retirements of long-term debt	(800)	0	(287.5)
Cash dividends paid	(596.7)	(569.6)	(534.8)
Other financing activities	(6.1)	(3.3)	(6.1)
Cash Flows from Financing Activities	(834.1)	305.7	(686.4)
NET CHANGE IN CASH AND CASH EQUIVALENTS	0.1	(0.4)	(7.1)
Beginning of period	0	0.4	7.5
End of period	$ 0.1	$ 0	$ 0.4

Schedule I Financial Statemen_6

Schedule I Financial Statements of Parent Company Schedule I Financial Statements of Parent Company - Dividends (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Parent
Condensed Financial Statements, Captions [Line Items]
Cash dividends from subsidiaries	$ 313	$ 325	$ 645

Schedule II Valuation and Qua_2

Schedule II Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Allowance for uncollectible accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance At Beginning Of Period	$ 24.2	$ 31.4	$ 32.9
Additions Charged To Costs And Expenses	11.7	15.4	16.1
Additions Charged To Other Accounts	12.3	10.7	11.2
Deductions	32.5	33.3	28.8
Balance At End Of Period	15.7	24.2	31.4
Allowance for uncollectible accounts | Evergy Kansas Central
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance At Beginning Of Period	11.6	16.9	13
Additions Charged To Costs And Expenses	6.6	7.7	13.1
Additions Charged To Other Accounts	5.2	4.7	4.5
Deductions	15.6	17.7	13.7
Balance At End Of Period	7.8	11.6	16.9
Allowance for uncollectible accounts | Evergy Metro
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance At Beginning Of Period	7.9	9.3	13.3
Additions Charged To Costs And Expenses	4.5	5	1.7
Additions Charged To Other Accounts	5	4.1	4.5
Deductions	11.6	10.5	10.2
Balance At End Of Period	5.8	7.9	9.3
Tax valuation allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance At Beginning Of Period	14.8	12.8	12.8
Additions Charged To Costs And Expenses	0.6	3.5	0.1
Additions Charged To Other Accounts	0	0	0
Deductions	8.5	1.5	0.1
Balance At End Of Period	6.9	14.8	12.8
Tax valuation allowance | Evergy Kansas Central
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance At Beginning Of Period	2.7	0
Additions Charged To Costs And Expenses	0	2.7
Additions Charged To Other Accounts	0	0
Deductions	0	0
Balance At End Of Period	$ 2.7	$ 2.7	$ 0