Entity Tax Identification Number Entity Tax Identification Number Goldman Sachs Stable Value Inst CL S GoldmanSachsStableValueInstCLS [Member] Goldman Sachs Stable Value Inst CL S Rollovers EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover Maximum [Member] Maximum [Member] Forfeited nonvested account, decrease from administrative expense EBP, Forfeited Nonvested Account, Decrease from Administrative Expense Legal Entity [Axis] Legal Entity [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] EBP, Description of Plan [Table] EBP, Description of Plan [Table] Mutual Fund Mutual Fund [Member] Entities [Table] Entities [Table] Note receivable from participant general loan borrowing term NoteReceivableFromParticipantGeneralLoanBorrowingTerm Note receivable from participant general loan borrowing term EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Table] Participant contribution, pretax, maximum annual compensation to total compensation, percentage EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage Self-Directed Brokerage Account EBP, Self-Directed Brokerage Account [Member] Total deductions EBP, Change in Net Asset Available for Benefit, Decrease Change in net asset available for benefit decrease from fiduciary account fees EBPChangeInNetAssetAvailableForBenefitDecreaseFromFiduciaryAccountFees EBP change in net asset available for benefit decrease from fiduciary account fees Investment, Fair Value and NAV EBP, Investment, Fair Value and NAV [Text Block] New Program Plus, Evergy Kansas Central Enhanced, and Wolf Creek Enhanced programs NewProgramPlus,EvergyKansasCentralEnhanced,andWolfCreekEnhancedprograms [Member] New Program Plus, Evergy Kansas Central Enhanced, and Wolf Creek Enhanced programs Managed account fees EBPChangeInNetAssetAvailableForBenefitDecreaseFromManagedAccountFees EBP Change in net asset available for benefit, decrease from managed account fees Auditor [Line Items] Pioneer Multi-Sector Fixed Income CL R1 PioneerMultiSectorFixedIncomeCLR1 [Member] Pioneer Multi Sector Fixed Income CL R1 Money Market Funds Money Market Funds [Member] Fair Value, Inputs, Level 1 Fair Value, Inputs, Level 1 [Member] Service years requirement for company matching ServiceYearsRequirementForCompanyMatching Service years requirement for company matching PGIM Total Return Bond CIT CL LP PGIMTotalReturnBondCITCLLP [Member] PGIM Total Return Bond CIT CL LP EBP, Investment, Fair Value and NAV [Abstract] EBP, Investment, Fair Value and NAV [Abstract] EBP, Asset [Abstract] EBP, Asset [Abstract] Statistical Measurement [Axis] Statistical Measurement [Axis] EBP, Change in Net Asset Available for Benefit, Increase [Abstract] EBP, Change in Net Asset Available for Benefit, Increase [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Table] Payment of Benefits EBP, Payment to Participant [Policy Text Block] Total liabilities EBP, Liability Amendment Flag Amendment Flag Basis of Accounting EBP, Basis of Accounting [Policy Text Block] EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Table] Investment, number of shares EBP, Investment, Number of Shares EBP, Description of Plan and Accounting Change [Abstract] EBP, Receivable [Abstract] EBP, Receivable [Abstract] Participant contribution parent common stock maximum deferral and corresponding match percentage ParticipantContributionParentCommonStockMaximumDeferralAndCorrespondingMatchPercentage Participant contribution parent common stock maximum deferral and corresponding match percentage Investment, Fair Value and NAV EBP, Investment, Fair Value and NAV [Table Text Block] EBP, Contribution, Participating Employer [Domain] EBP, Contribution, Participating Employer [Domain] Goldman Sachs Stable Value Inst CL 1 GoldmanSachsStableValueInstCL1 [Member] Goldman Sachs Stable Value Inst CL 1 Common Stock Common Stock [Member] Investments [Domain] Investments [Domain] Use of Estimate EBP, Use of Estimate [Policy Text Block] EBP, Related Party and Party-in-Interest [Domain] EBP, Related Party and Party-in-Interest [Domain] Schedule of Asset Held for Investment EBP, Schedule of Asset Held for Investment [Text Block] Cover [Abstract] EBP, Contribution, Participating Employer [Axis] EBP, Contribution, Participating Employer [Axis] Risk, Uncertainties and Concentrations EBP, Risk and Uncertainty [Text Block] Employer contributions EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash Management EBP, Management [Member] EBP, Related Party and Party-in-Interest [Axis] EBP, Related Party and Party-in-Interest [Axis] Post Program, New Program, New Program Plus, EKC And WC Enhanced Savings PostProgramNewProgramNewProgramPlusEKCAndWCEnhancedSavings [Member] Post Program, New Program, New Program Plus, EKC And WC Enhanced Savings Minimum [Member] Minimum [Member] State St S&P 500 Index Sl Cl Ii Common Collective Trust StateStS&P500IndexSlClIiCommonCollectiveTrust [Member] State St S&P 500 Index Sl Cl Ii Common Collective Trust Investment Type [Axis] Investment Type [Axis] Interest income on notes receivable from participants EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Total contributions EBP, Change in Net Asset Available for Benefit, Increase from Contribution Participant contributions EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover Employee benefit plan sponsoring employer EmployeeBenefitPlanSponsoringEmployer [Member] Employee Benefit Plan, Sponsoring Employer Net appreciation in fair value of investments EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment EBP, Description of Plan [Line Items] EBP, Description of Plan [Line Items] Plan Number EBP, Plan Number MFS Growth Equity Fund CLS MFSGrowthEquityFundCLS [Member] MFS Growth Equity Fund CLS EBP, Investment, Fair Value and NAV [Line Items] EBP, Investment, Fair Value and NAV [Line Items] EBP, Description of Plan [Text Block] EBP, Description of Plan [Text Block] Investment, Issuer Name EBP, Investment, Issuer Name [Extensible Enumeration] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Schedule of Asset Held for Investment [Line Items] EBP, Schedule of Asset Held for Investment [Line Items] Interest EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Investment EBP, Employer, Common Stock EBP, Employer, Common Stock [Member] EBP, Schedule of Asset Held for Investment [Abstract] EBP, Accounting Policy [Table] EBP, Accounting Policy [Table] Note receivable from participant principal residence loans term NoteReceivableFromParticipantPrincipalResidenceLoans Note receivable from participant principal residence loans Clear Bride Small Cap Growth R2 CIT ClearBrideSmallCapGrowthR2CIT [Member] Clear Bride Small Cap Growth R2 CIT Total additions EBP, Change in Net Asset Available for Benefit, Increase EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment [Abstract] EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment [Abstract] Investment, Identifier [Axis] Investment, Identifier [Axis] Administrative expenses EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Asset held for investment EBP, Asset Held for Investment EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Change in Net Asset Available for Benefit, Increase (Decrease) [Abstract] EBP, Change in Net Asset Available for Benefit, Increase (Decrease) [Abstract] EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash and Noncash [Abstract] EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash and Noncash [Abstract] Putnam Large Cap Value Trust IA PutnamLargeCapValueTrustIA [Member] Putnam Large Cap Value Trust IA Employer contribution, participant compensation matched, percentage EBP, Employer Contribution, Participant Compensation Matched, Percentage EBP, Statement of Change in Net Asset Available for Benefit [Abstract] Fair Value, Inputs, Level 2 Fair Value, Inputs, Level 2 [Member] Equity Securities Equity Securities [Member] Wolf Creek savings employees certain groups WolfCreekSavingsEmployeesCertainGroups [Member] Wolf Creek savings employees certain groups Putnam Small Cap Growth Class S PutnamSmallCapGrowthClassS [Member] Putnam Small Cap Growth Class S EBP, Tax Status [Table] EBP, Tax Status [Table] INCREASE IN NET ASSETS EBP, Change in Net Asset Available for Benefit, Increase (Decrease) EBP, Related Party and Party-in-Interest Transactions [Text Block] EBP, Related Party and Party-in-Interest Transactions [Text Block] Entity Information [Line Items] Entity Information [Line Items] EBP, Related Party and Party-in-Interest Transactions [Abstract] EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] Total receivables EBP, Receivable Text Block [Abstract] Old program employees OldProgramEmployees [Member] Old program employees Employer contributions EBP, Employer Contribution, Receivable EBP, Investment, Fair Value [Abstract] EBP, Investment, Fair Value [Abstract] Benefits paid to participants EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Dividends EBP, Change in Net Asset Available for Benefit, Increase from Dividend Income on Investment Participant-directed investments-at fair value EBP, Investment, Plan Interest in Master Trust, Fair Value Current value EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment [Abstract] EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment [Abstract] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] EBP, Statement of Net Asset Available for Benefit [Abstract] Employer contribution vesting service period NonElectiveEmployerContributionVestingServicePeriod Non-elective employer contribution vesting service period Investment current value, type [Extensible Enumeration] EBP, Investment, Current Value, Type [Extensible Enumeration] EBP, Accounting Policy [Line Items] EBP, Accounting Policy [Line Items] EBP, Tax Status [Abstract] Document Period End Date Document Period End Date Other liabilities EBP, Other Liability Administrative Expenses EBP, Expense [Policy Text Block] Employee benefit plan participant contribution pre tax minimum annual compensation to total compensation, percentage EmployeeBenefitPlanParticipantContributionPreTaxMinimumAnnualCompensationToTotalCompensation,Percentage EmployeeBenefitPlanParticipantContributionPreTaxMinimumAnnualCompensationToTotalCompensation,Percentage Asset held for investment, participant loan, after deemed distribution EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution Investment Valuation and Income Recognition EBP, Investment [Policy Text Block] Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Document Type Document Type Black Rock Life Path Target Date Series BlackRockLifePathTargetDateSeries [Member] Black Rock Life Path Target Date Series Maximum account balance for required Single lump sum distribution MaximumAccountBalanceForRequiredSingleLumpSumDistribution Maximum account balance for required single lump sum distribution Entity Central Index Key Entity Central Index Key Asset held for investment, participant loan, interest rate EBP, Asset Held for Investment, Participant Loan, Interest Rate EBP, Investment, Fair and Contract Value [Abstract] EBP, Investment, Fair and Contract Value [Abstract] Restriction on redemption dollar amount EBPFairValueInvestmentNAVRestrictionOnRedemptionDollarAmount EBP Fair Value Investment NAV Restriction On Redemption Dollar Amount Common Collective Trust Common Collective Trust [Member] EBP, Net Asset Available for Benefit [Abstract] EBP, Net Asset Available for Benefit [Abstract] Restriction on redemption percent of investment EBPFairValueInvestmentNAVRestrictionOnRedemptionPercentOfInvestment EBP Fair Value, Investment, NAV, Restriction on Redemption Percent of Investment EBP, Tax Status [Line Items] EBP, Tax Status [Line Items] EBP, Subsequent Event [Table] EBP, Subsequent Event [Table] EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] Forfeited nonvested account, decrease from employer contribution EBP, Forfeited Nonvested Account, Decrease from Employer Contribution Service hours requirement for nonelective employer contribution ServiceHoursRequirementForNonelectiveEmployerContribution Service Hours Requirement For Nonelective Employer Contribution Notes receivable from participants EBP, Note Receivable from Participant EBP001 EBP001 [Member] EBP001 Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] EBP, Summary of Accounting Policy [Text Block] EBP, Summary of Accounting Policy [Text Block] Entity Registrant Name Entity Registrant Name EBP, Subsequent Event [Abstract] EBP, Subsequent Event [Abstract] EBP, Liability [Abstract] EBP, Liability [Abstract] EBP, Subsequent Event [Text Block] EBP, Subsequent Event [Text Block] EBP, Tax Status [Text Block] EBP, Tax Status [Text Block] Eagle Mid Cap Growth CIT FDRS EagleMidCapGrowthCITFDRS [Member] Eagle MidCap Growth CIT FDRS Cash balance matching program participants CashBalanceMatchingProgramParticipants [Member] Cash balance matching program participants Non-elective employee benefit plan contribution, percentage NonElectiveEmployeeBenefitPlanContributionPercentage Non-elective employee benefit plan contribution, percentage Percentage of plan investments invested in Parent common stock EBP, Risk and Uncertainty, Concentration of Investment at Fair Value to Total Investments, Percentage EBP, Subsequent Event [Line Items] EBP, Subsequent Event [Line Items] EBP, Asset Held for Investment [Abstract] EBP, Asset Held for Investment [Abstract] Net investment income EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment Redemption notice period EBP, Fair Value, Investment, NAV, Redemption, Notice Period EBP, Related Party and Party-in-Interest Transactions [Line Items] EBP, Related Party and Party-in-Interest Transactions [Line Items] Fair Value, Inputs, Level 3 Fair Value, Inputs, Level 3 [Member] EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution [Abstract] EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution [Abstract] Other receivables EBP, Other Receivable NET ASSETS AVAILABLE FOR BENEFITS Net assets available for benefits, beginning of year Net assets available for benefits, end of year EBP, Net Asset Available for Benefit Entity [Domain] Entity [Domain] EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] Forfeited nonvested account EBP, Forfeited Nonvested Account Employer contribution, matching percentage EBP, Employer Contribution, Matching Percentage Employee benefit plans vested percentage EmployeeBenefitPlansVestedPercentage Employee Benefit Plans Vested Percentage Fair Value Measured at Net Asset Value Per Share Fair Value Measured at Net Asset Value Per Share [Member] EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Table] EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Line Items] Investment, Issuer Name, Other [Member]