$EVRG
Evergy, Inc. Stock $evrg

$evrg Overview Financials Valuation SEC Filings Company Website

2021 Form 10-K Financial Statement

#000171126922000008 Filed on February 25, 2022

Income Statement

Concept	2021	2020 Q4	2020
Revenue	$5.587B	$1.094B	$4.913B
YoY Change	13.7%	-3.29%	-4.55%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$813.6M	$236.5M	$804.7M
YoY Change	1.11%	4.92%	2.34%
% of Gross Profit
Operating Expenses	$4.217B	$930.4M	$3.703B
YoY Change	13.87%	-2.44%	-5.77%
Operating Profit	$1.355B	$153.0M	$1.144B
YoY Change	18.45%	-7.72%	-3.53%
Interest Expense	$372.6M	-$86.60M	$383.9M
YoY Change	-2.94%	-7.18%	2.65%
% of Operating Profit	27.5%	-56.6%	33.56%
Other Income/Expense, Net	$18.80M	-$6.200M	-$36.10M
YoY Change	-152.08%	-37.37%	-7.44%
Pretax Income	$1.001B	$60.20M	$723.9M
YoY Change	38.29%	-3.83%	-6.33%
Income Tax	$117.4M	$8.400M	$102.2M
% Of Pretax Income	11.73%	13.95%	14.12%
Net Earnings	$879.7M	$51.00M	$618.3M
YoY Change	42.28%	-20.19%	-7.7%
Net Earnings / Revenue	15.75%	4.66%	12.58%
Basic Earnings Per Share	$3.84		$2.72
Diluted Earnings Per Share	$3.83	$224.2K	$2.72
COMMON SHARES
Basic Shares Outstanding	229.0M shares	226.8M shares	227.2M shares
Diluted Shares Outstanding	229.6M shares		227.5M shares

Balance Sheet

Concept	2021	2020 Q4	2020
SHORT-TERM ASSETS
Cash & Short-Term Investments	$26.20M	$145.0M	$145.0M
YoY Change	-81.93%	530.43%	530.43%
Cash & Equivalents	$26.20M	$144.9M	$145.0M
Short-Term Investments
Other Short-Term Assets	$548.8M	$23.70M	$278.0M
YoY Change	97.41%	-92.35%	-10.32%
Inventory	$566.7M	$505.0M	$505.0M
Prepaid Expenses
Receivables	$60.90M	$273.9M	$456.0M
Other Receivables	$507.7M	$241.0M	$241.0M
Total Short-Term Assets	$1.710B	$1.624B	$1.624B
YoY Change	5.31%	10.67%	10.63%
LONG-TERM ASSETS
Property, Plant & Equipment	$21.24B	$19.95B	$20.20B
YoY Change	5.16%	4.0%	3.85%
Goodwill		$2.337B
YoY Change		0.0%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$3.233B	$527.7M	$2.955B
YoY Change	9.39%	3.17%	8.6%
Total Long-Term Assets	$26.81B	$25.49B	$25.49B
YoY Change	5.18%	393.83%	4.01%
TOTAL ASSETS
Total Short-Term Assets	$1.710B	$1.624B	$1.624B
Total Long-Term Assets	$26.81B	$25.49B	$25.49B
Total Assets	$28.52B	$27.11B	$27.12B
YoY Change	5.18%	4.38%	4.38%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$639.7M	$654.0M	$654.0M
YoY Change	-2.19%	23.68%	23.63%
Accrued Expenses	$187.5M	$193.0M	$193.0M
YoY Change	-2.85%	39.86%	39.86%
Deferred Revenue
YoY Change
Short-Term Debt	$1.478B	$675.0M	$675.0M
YoY Change	119.01%	-25.08%	-25.08%
Long-Term Debt Due	$394.7M	$436.4M	$461.0M
YoY Change	-14.38%	73.8%	60.07%
Total Short-Term Liabilities	$3.103B	$2.356B	$2.356B
YoY Change	31.7%	0.85%	0.86%
LONG-TERM LIABILITIES
Long-Term Debt	$9.339B	$9.191B	$9.230B
YoY Change	1.18%	5.08%	4.73%
Other Long-Term Liabilities	$4.975B	$308.2M	$5.146B
YoY Change	-3.32%	-9.54%	13.42%
Total Long-Term Liabilities	$14.31B	$16.04B	$14.38B
YoY Change	-0.43%	6.27%	7.69%
TOTAL LIABILITIES
Total Short-Term Liabilities	$3.103B	$2.356B	$2.356B
Total Long-Term Liabilities	$14.31B	$16.04B	$14.38B
Total Liabilities	$19.28B	$18.40B	$18.38B
YoY Change	4.87%	5.54%	5.61%
SHAREHOLDERS EQUITY
Retained Earnings		$1.703B
YoY Change		9.75%
Common Stock		$7.080B
YoY Change		0.14%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$9.244B	$8.733B	$8.733B
YoY Change
Total Liabilities & Shareholders Equity	$28.52B	$27.11B	$27.12B
YoY Change	5.18%	4.38%	4.38%

Cashflow Statement

Concept	2021	2020 Q4	2020
OPERATING ACTIVITIES
Net Income	$879.7M	$51.00M	$618.3M
YoY Change	42.28%	-20.19%	-7.7%
Depreciation, Depletion And Amortization	$813.6M	$236.5M	$804.7M
YoY Change	1.11%	4.92%	2.34%
Cash From Operating Activities	$1.352B	$332.1M	$1.754B
YoY Change	-22.93%	10.08%	0.27%
INVESTING ACTIVITIES
Capital Expenditures	$1.973B	-$502.2M	$1.560B
YoY Change	26.42%	39.11%	28.94%
Acquisitions
YoY Change
Other Investing Activities	-$38.40M	-$1.600M	$11.10M
YoY Change	-445.95%	-103.03%	117.65%
Cash From Investing Activities	-$1.914B	-$503.8M	-$1.534B
YoY Change	24.78%	63.47%	41.97%
FINANCING ACTIVITIES
Cash Dividend Paid	$497.9M		$465.0M
YoY Change	7.08%		0.54%
Common Stock Issuance & Retirement, Net	-$112.5M		$0.00
YoY Change			-100.0%
Debt Paid & Issued, Net	$432.0M		$251.1M
YoY Change	72.04%		-64.18%
Cash From Financing Activities	$443.4M	-45.00M	-$98.40M
YoY Change	-550.61%	120.59%	-87.79%
NET CHANGE
Cash From Operating Activities	$1.352B	332.1M	$1.754B
Cash From Investing Activities	-$1.914B	-503.8M	-$1.534B
Cash From Financing Activities	$443.4M	-45.00M	-$98.40M
Net Change In Cash	-$118.7M	-216.7M	$121.7M
YoY Change	-197.53%	705.58%	-188.77%
FREE CASH FLOW
Cash From Operating Activities	$1.352B	$332.1M	$1.754B
Capital Expenditures	$1.973B	-$502.2M	$1.560B
Free Cash Flow	-$620.8M	$834.3M	$193.5M
YoY Change	-420.83%	25.89%	-64.09%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001711269
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021Q4	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesCurrent
CY2021Q4	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://www.evergy.com/20211231#OtherLongTermLiabilities
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#PropertyPlantAndEquipmentNet
CY2021Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesCurrent
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://www.evergy.com/20211231#OtherLongTermLiabilities
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://www.evergy.com/20211231#LongTermOtherAssets
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	001-38515
CY2021	dei	Entity Registrant Name EntityRegistrantName	EVERGY, INC.
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	82-2733395
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MO
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	1200 Main Street
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Kansas City
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	MO
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	64105
CY2021	dei	City Area Code CityAreaCode	816
CY2021	dei	Local Phone Number LocalPhoneNumber	556-2200
CY2021	dei	Security12b Title Security12bTitle	Evergy, Inc. common stock
CY2021	dei	Trading Symbol TradingSymbol	EVRG
CY2021	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Public Float EntityPublicFloat	13704717320	USD
CY2022Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	229311689	shares
CY2021	dei	Auditor Name AuditorName	DELOITTE & TOUCHE LLP
CY2021	dei	Auditor Location AuditorLocation	Kansas City, Missouri
CY2021	us-gaap	Revenues Revenues	5586700000	USD
CY2020	us-gaap	Revenues Revenues	4913400000	USD
CY2019	us-gaap	Revenues Revenues	5147800000	USD
CY2021	evrg	Fuel And Purchased Power FuelAndPurchasedPower	1557000000	USD
CY2020	evrg	Fuel And Purchased Power FuelAndPurchasedPower	1099000000	USD
CY2019	evrg	Fuel And Purchased Power FuelAndPurchasedPower	1265000000	USD
CY2021	evrg	Spp Network Transmission Costs SPPNetworkTransmissionCosts	290400000	USD
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CY2021	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	380500000	USD
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CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	100000	USD
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CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	600000	USD
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CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	12200000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	11700000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	15700000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	885100000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	618900000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	622900000	USD
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	26200000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	144900000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	32900000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	19300000	USD
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	221600000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	273900000	USD
CY2021Q4	us-gaap	Transfers Accounted For As Secured Borrowings Assets Carrying Amount TransfersAccountedForAsSecuredBorrowingsAssetsCarryingAmount	319000000.0	USD
CY2020Q4	us-gaap	Transfers Accounted For As Secured Borrowings Assets Carrying Amount TransfersAccountedForAsSecuredBorrowingsAssetsCarryingAmount	360000000.0	USD
CY2021Q4	us-gaap	Energy Related Inventory EnergyRelatedInventory	566700000	USD
CY2020Q4	us-gaap	Energy Related Inventory EnergyRelatedInventory	504500000	USD
CY2021Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	28000000.0	USD
CY2020Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	62900000	USD
CY2021Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	424100000	USD
CY2020Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	206200000	USD
CY2021Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	49300000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	48200000	USD
CY2021Q4	us-gaap	Other Assets Current OtherAssetsCurrent	75400000	USD
CY2020Q4	us-gaap	Other Assets Current OtherAssetsCurrent	23700000	USD
CY2021Q4	us-gaap	Assets Current AssetsCurrent	1710300000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	1624300000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	21002600000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	19951000000	USD
CY2021Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1991100000	USD
CY2020Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1868200000	USD
CY2021Q4	us-gaap	Decommissioning Fund Investments DecommissioningFundInvestments	768700000	USD
CY2020Q4	us-gaap	Decommissioning Fund Investments DecommissioningFundInvestments	652100000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	2336600000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	2336600000	USD
CY2021Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	563400000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	527700000	USD
CY2021Q4	us-gaap	Regulated Entity Other Assets Noncurrent RegulatedEntityOtherAssetsNoncurrent	5659800000	USD
CY2020Q4	us-gaap	Regulated Entity Other Assets Noncurrent RegulatedEntityOtherAssetsNoncurrent	5384600000	USD
CY2021Q4	us-gaap	Assets Assets	28520500000	USD
CY2020Q4	us-gaap	Assets Assets	27114800000	USD
CY2021Q4	us-gaap	Short Term Bank Loans And Notes Payable ShortTermBankLoansAndNotesPayable	1159300000	USD
CY2020Q4	us-gaap	Short Term Bank Loans And Notes Payable ShortTermBankLoansAndNotesPayable	315000000.0	USD
CY2021Q4	us-gaap	Transfers Accounted For As Secured Borrowings Associated Liabilities Carrying Amount TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesCarryingAmount	319000000.0	USD
CY2020Q4	us-gaap	Transfers Accounted For As Secured Borrowings Associated Liabilities Carrying Amount TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesCarryingAmount	360000000.0	USD
CY2021Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	639700000	USD
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	654000000.0	USD
CY2021Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	150400000	USD
CY2020Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	143800000	USD
CY2021Q4	us-gaap	Interest Payable Current InterestPayableCurrent	118800000	USD
CY2020Q4	us-gaap	Interest Payable Current InterestPayableCurrent	123400000	USD
CY2021Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	70700000	USD
CY2020Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	26100000	USD
CY2021Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	19500000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	40200000	USD
CY2021Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	51600000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	55500000	USD
CY2021Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	184600000	USD
CY2020Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	182600000	USD
CY2021Q4	us-gaap	Liabilities Current LiabilitiesCurrent	3102900000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	2355800000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	1861900000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	1664800000	USD
CY2021Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	181400000	USD
CY2020Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	186700000	USD
CY2021Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	2705000000	USD
CY2020Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	2638800000	USD
CY2021Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	879100000	USD
CY2020Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	1149400000	USD
CY2021Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	940600000	USD
CY2020Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	901700000	USD
CY2021Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	310000000.0	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	308200000	USD
CY2021Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	16175900000	USD
CY2020Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	16040500000	USD
CY2021Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	600000000	shares
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	600000000	shares
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	229299900	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	226836670	shares
CY2021Q4	us-gaap	Common Stock Value CommonStockValue	7205500000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	7080000000	USD
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2082900000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1702800000	USD
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-44000000.0	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-49400000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	9244400000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	8733400000	USD
CY2021Q4	us-gaap	Minority Interest MinorityInterest	-2700000	USD
CY2020Q4	us-gaap	Minority Interest MinorityInterest	-14900000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	9241700000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	8718500000	USD
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	28520500000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	27114800000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	891900000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	630000000.0	USD
CY2019	us-gaap	Profit Loss ProfitLoss	685600000	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	896400000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	880100000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	861700000	USD
CY2021	evrg	Amortization Of Nuclear Fuel AmortizationOfNuclearFuel	51400000	USD
CY2020	evrg	Amortization Of Nuclear Fuel AmortizationOfNuclearFuel	58300000	USD
CY2019	evrg	Amortization Of Nuclear Fuel AmortizationOfNuclearFuel	51400000	USD
CY2021	evrg	Amortization Of Deferred Refueling Outage Costs AmortizationOfDeferredRefuelingOutageCosts	25100000	USD
CY2020	evrg	Amortization Of Deferred Refueling Outage Costs AmortizationOfDeferredRefuelingOutageCosts	25400000	USD
CY2019	evrg	Amortization Of Deferred Refueling Outage Costs AmortizationOfDeferredRefuelingOutageCosts	25500000	USD
CY2021	evrg	Amortization Of Corporate Owned Life Insurance AmortizationOfCorporateOwnedLifeInsurance	24100000	USD
CY2020	evrg	Amortization Of Corporate Owned Life Insurance AmortizationOfCorporateOwnedLifeInsurance	20100000	USD
CY2019	evrg	Amortization Of Corporate Owned Life Insurance AmortizationOfCorporateOwnedLifeInsurance	19800000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	15600000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	16000000.0	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	16300000	USD
CY2021	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	102200000	USD
CY2020	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	126900000	USD
CY2019	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	121500000	USD
CY2021	us-gaap	Increase Decrease In Allowance For Equity Funds Used During Construction IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction	29400000	USD
CY2020	us-gaap	Increase Decrease In Allowance For Equity Funds Used During Construction IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction	17200000	USD
CY2019	us-gaap	Increase Decrease In Allowance For Equity Funds Used During Construction IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction	2200000	USD
CY2021	evrg	Payments For Asset Retirement Obligations PaymentsForAssetRetirementObligations	22600000	USD
CY2020	evrg	Payments For Asset Retirement Obligations PaymentsForAssetRetirementObligations	18400000	USD
CY2019	evrg	Payments For Asset Retirement Obligations PaymentsForAssetRetirementObligations	17800000	USD
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	8200000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	8300000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	9800000	USD
CY2021	evrg	Income From Corporate Owned Life Insurance IncomeFromCorporateOwnedLifeInsurance	14200000	USD
CY2021	evrg	Increase Decrease In Accounts Receivable Pledged As Collateral IncreaseDecreaseInAccountsReceivablePledgedAsCollateral	-41000000.0	USD
CY2020	evrg	Increase Decrease In Accounts Receivable Pledged As Collateral IncreaseDecreaseInAccountsReceivablePledgedAsCollateral	21000000.0	USD
CY2020	evrg	Income From Corporate Owned Life Insurance IncomeFromCorporateOwnedLifeInsurance	8200000	USD
CY2019	evrg	Income From Corporate Owned Life Insurance IncomeFromCorporateOwnedLifeInsurance	29600000	USD
CY2021	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	13800000	USD
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-800000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	3200000	USD
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-69900000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	4900000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	23100000	USD
CY2019	evrg	Increase Decrease In Accounts Receivable Pledged As Collateral IncreaseDecreaseInAccountsReceivablePledgedAsCollateral	-26000000.0	USD
CY2021	evrg	Increase Decrease In Energy Related Inventory IncreaseDecreaseInEnergyRelatedInventory	61600000	USD
CY2020	evrg	Increase Decrease In Energy Related Inventory IncreaseDecreaseInEnergyRelatedInventory	22300000	USD
CY2019	evrg	Increase Decrease In Energy Related Inventory IncreaseDecreaseInEnergyRelatedInventory	-29900000	USD
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	299800000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-16900000	USD
CY2019	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-59400000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-43400000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-55100000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	134300000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	16900000	USD
CY2021	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	41400000	USD
CY2020	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	6700000	USD
CY2019	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	-8200000	USD
CY2021	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-19400000	USD
CY2020	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-98900000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	251500000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-119500000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-79800000	USD
CY2021	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-31700000	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-82000000.0	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-75500000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1560300000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1210100000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1351700000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1753800000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1749000000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1972500000	USD
CY2021	us-gaap	Payments To Invest In Decommissioning Fund PaymentsToInvestInDecommissioningFund	158200000	USD
CY2020	us-gaap	Payments To Invest In Decommissioning Fund PaymentsToInvestInDecommissioningFund	65600000	USD
CY2019	us-gaap	Payments To Invest In Decommissioning Fund PaymentsToInvestInDecommissioningFund	55800000	USD
CY2021	us-gaap	Proceeds From Decommissioning Fund ProceedsFromDecommissioningFund	115700000	USD
CY2020	us-gaap	Proceeds From Decommissioning Fund ProceedsFromDecommissioningFund	56500000	USD
CY2019	us-gaap	Proceeds From Decommissioning Fund ProceedsFromDecommissioningFund	47300000	USD
CY2021	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	14200000	USD
CY2020	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	19100000	USD
CY2019	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	18300000	USD
CY2021	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	77000000.0	USD
CY2020	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	65900000	USD
CY2019	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	161700000	USD
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-38400000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	11100000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	5100000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1913800000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1533700000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1080300000	USD
CY2021	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	840500000	USD
CY2020	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-246900000	USD
CY2019	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-176700000	USD
CY2021	evrg	Proceeds From Term Loan Facility ProceedsFromTermLoanFacility	0	USD
CY2020	evrg	Proceeds From Term Loan Facility ProceedsFromTermLoanFacility	0	USD
CY2019	evrg	Proceeds From Term Loan Facility ProceedsFromTermLoanFacility	1000000000	USD
CY2021	evrg	Repayment Of Term Loan Facility RepaymentOfTermLoanFacility	0	USD
CY2020	evrg	Repayment Of Term Loan Facility RepaymentOfTermLoanFacility	0	USD
CY2019	evrg	Repayment Of Term Loan Facility RepaymentOfTermLoanFacility	1000000000	USD
CY2021	evrg	Proceeds From Payments For Issuance Of Collateralized Debt Net ProceedsFromPaymentsForIssuanceOfCollateralizedDebtNet	-41000000.0	USD
CY2020	evrg	Proceeds From Payments For Issuance Of Collateralized Debt Net ProceedsFromPaymentsForIssuanceOfCollateralizedDebtNet	21000000.0	USD
CY2019	evrg	Proceeds From Payments For Issuance Of Collateralized Debt Net ProceedsFromPaymentsForIssuanceOfCollateralizedDebtNet	-26000000.0	USD
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	112500000	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	497300000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	888800000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	2372700000	USD
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	432000000.0	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	251100000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	701100000	USD
CY2021	evrg	Retirementsof Long Term Debt Of Vi Es RetirementsofLongTermDebtOfVIEs	18800000	USD
CY2020	evrg	Retirementsof Long Term Debt Of Vi Es RetirementsofLongTermDebtOfVIEs	32300000	USD
CY2019	evrg	Retirementsof Long Term Debt Of Vi Es RetirementsofLongTermDebtOfVIEs	30300000	USD
CY2021	us-gaap	Payments For Hedge Financing Activities PaymentsForHedgeFinancingActivities	0	USD
CY2020	us-gaap	Payments For Hedge Financing Activities PaymentsForHedgeFinancingActivities	0	USD
CY2019	us-gaap	Payments For Hedge Financing Activities PaymentsForHedgeFinancingActivities	69800000	USD
CY2021	evrg	Proceeds From Borrowings Against Corporate Owned Life Insurance ProceedsFromBorrowingsAgainstCorporateOwnedLifeInsurance	54400000	USD
CY2020	evrg	Proceeds From Borrowings Against Corporate Owned Life Insurance ProceedsFromBorrowingsAgainstCorporateOwnedLifeInsurance	55500000	USD
CY2019	evrg	Proceeds From Borrowings Against Corporate Owned Life Insurance ProceedsFromBorrowingsAgainstCorporateOwnedLifeInsurance	59400000	USD
CY2021	evrg	Repayments Of Borrowings Against Corporate Owned Life Insurance RepaymentsOfBorrowingsAgainstCorporateOwnedLifeInsurance	62300000	USD
CY2020	evrg	Repayments Of Borrowings Against Corporate Owned Life Insurance RepaymentsOfBorrowingsAgainstCorporateOwnedLifeInsurance	54800000	USD
CY2019	evrg	Repayments Of Borrowings Against Corporate Owned Life Insurance RepaymentsOfBorrowingsAgainstCorporateOwnedLifeInsurance	127500000	USD
CY2021	us-gaap	Payments Of Dividends PaymentsOfDividends	497900000	USD
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	465000000.0	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	462500000	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1628700000	USD
CY2021	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	0	USD
CY2020	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	0	USD
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	8600000	USD
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-9300000	USD
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-13600000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-6700000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	443400000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-98400000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-805800000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-118700000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	121700000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-137100000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	144900000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	23200000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	160300000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	26200000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	144900000	USD
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.05
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	465000000.0	USD
CY2020	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	2000000.0	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	16000000.0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	3000000.0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	2400000	USD
CY2020	us-gaap	Stockholders Equity Other StockholdersEquityOther	500000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	8718500000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	891900000	USD
CY2021	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	112500000	USD
CY2021	evrg	Stock Issued During Period Value Dividend Reinvestment Plan And Share Based Compensation Net StockIssuedDuringPeriodValueDividendReinvestmentPlanAndShareBasedCompensationNet	2400000	USD
CY2021	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	2900000	USD
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.178
CY2021	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	497900000	USD
CY2021	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	1700000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	13800000	USD
CY2021	evrg	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Issuance AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsIssuance	-2900000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	1800000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	5500000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	100000	USD
CY2021	us-gaap	Stockholders Equity Other StockholdersEquityOther	200000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	9241700000	USD
CY2021Q4	evrg	Owned Generating Capacity And Renewable Purchased Power OwnedGeneratingCapacityAndRenewablePurchasedPower	15400	MW
CY2021	evrg	Number Of Customers Served NumberOfCustomersServed	1600000	customer
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:700;line-height:120%">Use of Estimates </span></div><div style="margin-bottom:12pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">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.</span></div>
CY2021Q4	us-gaap	Energy Related Inventory Coal EnergyRelatedInventoryCoal	160900000	USD
CY2020Q4	us-gaap	Energy Related Inventory Coal EnergyRelatedInventoryCoal	145000000.0	USD
CY2021Q4	evrg	Energy Related Inventory Supplies EnergyRelatedInventorySupplies	405800000	USD
CY2020Q4	evrg	Energy Related Inventory Supplies EnergyRelatedInventorySupplies	359500000	USD
CY2021Q4	us-gaap	Energy Related Inventory EnergyRelatedInventory	566700000	USD
CY2020Q4	us-gaap	Energy Related Inventory EnergyRelatedInventory	504500000	USD
CY2021	evrg	Allowance For Borrowed Funds Used During Construction AllowanceForBorrowedFundsUsedDuringConstruction	14700000	USD
CY2020	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	33700000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Policy For Uncollectible Amounts FinancingReceivableAllowanceForCreditLossesPolicyForUncollectibleAmounts	<div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:700;line-height:120%">Allowance for Credit Losses </span></div><div style="margin-bottom:12pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">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.</span></div>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.
CY2020	evrg	Allowance For Borrowed Funds Used During Construction AllowanceForBorrowedFundsUsedDuringConstruction	16500000	USD
CY2019	evrg	Allowance For Borrowed Funds Used During Construction AllowanceForBorrowedFundsUsedDuringConstruction	14500000	USD
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	29400000	USD
CY2020	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	17200000	USD
CY2019	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	2200000	USD
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	44100000	USD
CY2019	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	16700000	USD
CY2021	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.03
CY2021	us-gaap	Amortization Of Regulatory Asset AmortizationOfRegulatoryAsset	9000000	USD
CY2021Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	1363000000	USD
CY2020Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	1369600000	USD
CY2021Q4	evrg	Corporate Owned Life Insurance Borrowings CorporateOwnedLifeInsuranceBorrowings	1232300000	USD
CY2020Q4	evrg	Corporate Owned Life Insurance Borrowings CorporateOwnedLifeInsuranceBorrowings	1237600000	USD
CY2021Q4	us-gaap	Life Insurance Corporate Or Bank Owned Amount LifeInsuranceCorporateOrBankOwnedAmount	130700000	USD
CY2020Q4	us-gaap	Life Insurance Corporate Or Bank Owned Amount LifeInsuranceCorporateOrBankOwnedAmount	132000000.0	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	23200000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	9990700000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	685600000	USD
CY2019	evrg	Stock Issued During Period Value Dividend Reinvestment Plan And Share Based Compensation Net StockIssuedDuringPeriodValueDividendReinvestmentPlanAndShareBasedCompensationNet	2400000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.93
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	462500000	USD
CY2019	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	1900000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	16300000	USD
CY2019	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	1628700000	USD
CY2019	evrg	Noncontrolling Interest Increase From Consolidation Net NoncontrollingInterestIncreaseFromConsolidationNet	3800000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	8600000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-46400000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	600000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	8545300000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	630000000.0	USD
CY2020	evrg	Stock Issued During Period Value Dividend Reinvestment Plan And Share Based Compensation Net StockIssuedDuringPeriodValueDividendReinvestmentPlanAndShareBasedCompensationNet	5900000	USD
CY2021	evrg	Non Service Cost Component Of Net Benefit Cost NonServiceCostComponentOfNetBenefitCost	55600000	USD
CY2020	evrg	Non Service Cost Component Of Net Benefit Cost NonServiceCostComponentOfNetBenefitCost	58600000	USD
CY2019	evrg	Non Service Cost Component Of Net Benefit Cost NonServiceCostComponentOfNetBenefitCost	55600000	USD
CY2021	evrg	Other Nonoperating Income Expense Other OtherNonoperatingIncomeExpenseOther	-31800000	USD
CY2020	evrg	Other Nonoperating Income Expense Other OtherNonoperatingIncomeExpenseOther	-19600000	USD
CY2019	evrg	Other Nonoperating Income Expense Other OtherNonoperatingIncomeExpenseOther	-21300000	USD
CY2021	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	87400000	USD
CY2020	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	78200000	USD
CY2019	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	76900000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	891900000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	630000000.0	USD
CY2019	us-gaap	Profit Loss ProfitLoss	685600000	USD
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	12200000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	11700000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	15700000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	879700000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	618300000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	669900000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	229000000.0	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	227200000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	239500000	shares
CY2021	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	600000	shares
CY2020	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	300000	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	400000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	229600000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	227500000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	239900000	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.84
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.72
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.80
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.83
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.72
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.79
CY2021	us-gaap	Interest Paid Net InterestPaidNet	356900000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	367600000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	329500000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-19600000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-46500000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-5200000	USD
CY2021	evrg	Non Cash Property Plant And Equipment Additions Gross NonCashPropertyPlantAndEquipmentAdditionsGross	269300000	USD
CY2020	evrg	Non Cash Property Plant And Equipment Additions Gross NonCashPropertyPlantAndEquipmentAdditionsGross	463300000	USD
CY2019	evrg	Non Cash Property Plant And Equipment Additions Gross NonCashPropertyPlantAndEquipmentAdditionsGross	186000000.0	USD
CY2021	us-gaap	Stock Issued1 StockIssued1	700000	USD
CY2020	us-gaap	Stock Issued1 StockIssued1	900000	USD
CY2019	us-gaap	Stock Issued1 StockIssued1	-300000	USD
CY2021Q1	evrg	Increase Of Natural Gas And Purchased Power Costs Net Increase In Wholesale Revenues IncreaseOfNaturalGasAndPurchasedPowerCostsNetIncreaseInWholesaleRevenues	365500000	USD
CY2021Q1	evrg	Increase Of Natural Gas And Purchased Power Costs Net Increase In Wholesale Revenues IncreaseOfNaturalGasAndPurchasedPowerCostsNetIncreaseInWholesaleRevenues	365500000	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	5329100000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4781600000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	5019600000	USD
CY2021	evrg	Other Revenue OtherRevenue	257600000	USD
CY2020	evrg	Other Revenue OtherRevenue	131800000	USD
CY2019	evrg	Other Revenue OtherRevenue	128200000	USD
CY2021	us-gaap	Revenues Revenues	5586700000	USD
CY2020	us-gaap	Revenues Revenues	4913400000	USD
CY2019	us-gaap	Revenues Revenues	5147800000	USD
CY2021Q4	us-gaap	Other Receivables Gross Current OtherReceivablesGrossCurrent	160700000	USD
CY2020Q4	us-gaap	Other Receivables Gross Current OtherReceivablesGrossCurrent	177900000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	32900000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	19300000	USD
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	221600000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	273900000	USD
CY2021Q4	evrg	Other Receivables Contracts With Customers OtherReceivablesContractsWithCustomers	63700000	USD
CY2021	us-gaap	Number Of Reporting Units NumberOfReportingUnits	1	reporting_unit
CY2020Q4	evrg	Other Receivables Contracts With Customers OtherReceivablesContractsWithCustomers	57500000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	19300000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	10500000	USD
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	28000000.0	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	24900000	USD
CY2021	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	26400000	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	28600000	USD
CY2021	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	12000000.0	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	12500000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	32900000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	19300000	USD
CY2021Q4	us-gaap	Transfers Accounted For As Secured Borrowings Assets Carrying Amount TransfersAccountedForAsSecuredBorrowingsAssetsCarryingAmount	319000000.0	USD
CY2020Q4	us-gaap	Transfers Accounted For As Secured Borrowings Assets Carrying Amount TransfersAccountedForAsSecuredBorrowingsAssetsCarryingAmount	360000000.0	USD
CY2021Q4	us-gaap	Goodwill Goodwill	2336600000	USD
CY2021Q4	us-gaap	Regulatory Assets RegulatoryAssets	2415200000	USD
CY2020Q4	us-gaap	Regulatory Assets RegulatoryAssets	2074400000	USD
CY2021Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	424100000	USD
CY2020Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	206200000	USD
CY2021Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1991100000	USD
CY2020Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1868200000	USD
CY2021Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	2775700000	USD
CY2020Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	2664900000	USD
CY2021Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	70700000	USD
CY2020Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	26100000	USD
CY2021Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	2705000000	USD
CY2020Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	2638800000	USD
CY2020	evrg	Increase Decrease In Aro Resulting From Decommissioning Study IncreaseDecreaseInAROResultingFromDecommissioningStudy	259100000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	941900000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	674100000	USD
CY2021	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	13500000	USD
CY2020	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	249300000	USD
CY2021	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	38700000	USD
CY2020	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	18400000	USD
CY2021	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	43400000	USD
CY2020	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	36900000	USD
CY2021Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	960100000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	941900000	USD
CY2021Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	19500000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	40200000	USD
CY2021Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	940600000	USD
CY2020Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	901700000	USD
CY2021Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	30289900000	USD
CY2021Q4	evrg	Property Plant And Equipment Adjustment PropertyPlantAndEquipmentAdjustment	724300000	USD
CY2021Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	11515500000	USD
CY2021Q4	evrg	Public Utilities Property Plant And Equipment In Service Net PublicUtilitiesPropertyPlantAndEquipmentInServiceNet	19498700000	USD
CY2021Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	1350600000	USD
CY2021Q4	us-gaap	Nuclear Fuel Net Of Amortization NuclearFuelNetOfAmortization	152500000	USD
CY2021Q4	evrg	Plant To Be Retired Net PlantToBeRetiredNet	800000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	21002600000	USD
CY2020Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	28914800000	USD
CY2020Q4	evrg	Property Plant And Equipment Adjustment PropertyPlantAndEquipmentAdjustment	724300000	USD
CY2020Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	10998400000	USD
CY2020Q4	evrg	Public Utilities Property Plant And Equipment In Service Net PublicUtilitiesPropertyPlantAndEquipmentInServiceNet	18640700000	USD
CY2020Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	1153500000	USD
CY2020Q4	us-gaap	Nuclear Fuel Net Of Amortization NuclearFuelNetOfAmortization	155900000	USD
CY2020Q4	evrg	Plant To Be Retired Net PlantToBeRetiredNet	900000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	19951000000	USD
CY2021	us-gaap	Depreciation Depreciation	813600000	USD
CY2020	us-gaap	Depreciation Depreciation	804700000	USD
CY2019	us-gaap	Depreciation Depreciation	786300000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2200000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	3000000.0	USD
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	25600000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	17400000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	17600000	USD
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	15600000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	15500000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	15500000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	-100000	USD
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Maximum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum	0.32
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0399
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Maximum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum	0.0024
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	387500000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	439500000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	800000000.0	USD
CY2021Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	2500000000	USD
CY2021Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	1339900000	USD
CY2020Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	2500000000	USD
CY2020Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	2165300000	USD
CY2021Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	389300000	USD
CY2021Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	80500000	USD
CY2021Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	9297900000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	436400000	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	84900000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	9190900000	USD
CY2019Q3	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	500000000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-69800000	USD
CY2021Q4	us-gaap	Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet	-5400000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	636000000.0	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	350000000.0	USD
CY2019Q3	us-gaap	Payments For Hedge Financing Activities PaymentsForHedgeFinancingActivities	69800000	USD
CY2021Q4	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments	1700000	USD
CY2020Q4	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments	2200000	USD
CY2021	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	95500000	USD
CY2020	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	45200000	USD
CY2019	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	82200000	USD
CY2021Q4	evrg	Industry Aggregate Limit For Nuclear Insurance IndustryAggregateLimitForNuclearInsurance	3200000000	USD
CY2021Q4	evrg	Industry Aggregate Limit For Non Nuclear Insurance IndustryAggregateLimitForNonNuclearInsurance	1800000000	USD
CY2021Q4	evrg	Nuclear Liability Insurance Full Limit Of Public Liability NuclearLiabilityInsuranceFullLimitOfPublicLiability	13600000000	USD
CY2021Q4	evrg	Nuclear Liability Insurance Maximum Available Commercial Insurance NuclearLiabilityInsuranceMaximumAvailableCommercialInsurance	500000000	USD
CY2021Q4	evrg	Nuclear Liability Insurance Industry Wide Retrospective Assessment Program NuclearLiabilityInsuranceIndustryWideRetrospectiveAssessmentProgram	13100000000	USD
CY2021Q4	evrg	Nuclear Liability Insurance Owners Insurance Amount Maximum NuclearLiabilityInsuranceOwnersInsuranceAmountMaximum	137600000	USD
CY2021Q4	evrg	Nuclear Liability Insurance Owners Insurance Amount Per Incident NuclearLiabilityInsuranceOwnersInsuranceAmountPerIncident	20500000	USD
CY2021Q4	evrg	Nuclear Liability Insurance Owners Property Insurance Maximum NuclearLiabilityInsuranceOwnersPropertyInsuranceMaximum	2800000000	USD
CY2021Q4	evrg	Nuclear Liability Insurance Owners Nonnuclear Property Insurance Maximum NuclearLiabilityInsuranceOwnersNonnuclearPropertyInsuranceMaximum	2300000000	USD
CY2021Q4	evrg	Nuclear Liability Insurance Owners Property Insurance Assessment Maximum NuclearLiabilityInsuranceOwnersPropertyInsuranceAssessmentMaximum	30000000	USD
CY2021Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On First Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary	466100000	USD
CY2021Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Second Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary	247100000	USD
CY2021Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Third Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary	188200000	USD
CY2021Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Fourth Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary	158800000	USD
CY2021Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Fifth Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary	165100000	USD
CY2021Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Due After Five Years UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears	515300000	USD
CY2021Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance Sheet Amount UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount	1740600000	USD
CY2021Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	904000000	USD
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	600000000	shares
CY2021Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	12000000	shares
CY2021Q1	evrg	Stock To Be Sold And Issued Under Securities Purchase Agreement Shares StockToBeSoldAndIssuedUnderSecuritiesPurchaseAgreementShares	2269447	shares
CY2021Q1	evrg	Stock To Be Soldand Issued Under Securities Purchase Agreement Value StockToBeSoldandIssuedUnderSecuritiesPurchaseAgreementValue	113200000	USD
CY2021Q1	evrg	Warrant To Be Issued Under Securities Purchase Agreementfor Potential Shares Maximum WarrantToBeIssuedUnderSecuritiesPurchaseAgreementforPotentialSharesMaximum	3950000	shares
CY2021Q1	us-gaap	Warrants And Rights Outstanding Term WarrantsAndRightsOutstandingTerm	P3Y
CY2021Q1	us-gaap	Class Of Warrant Or Right Exercise Price Of Warrants Or Rights1 ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1	64.70
CY2021Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	112500000	USD
CY2021Q2	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	700000	USD
CY2021Q4	evrg	Restrictionon Payment Of Dividends Minimum Ratio Of Equity To Capitalization RestrictiononPaymentOfDividendsMinimumRatioOfEquityToCapitalization	0.35
CY2021Q4	us-gaap	Amount Of Restricted Net Assets For Consolidated And Unconsolidated Subsidiaries AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries	5700000000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	15600000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-26800000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-39500000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-400000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2100000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	15000000.0	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	15200000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-24700000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-24500000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	92800000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	73100000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	93200000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	14700000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	59800000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	27500000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	107500000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	132900000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	120700000	USD
CY2021	evrg	Investment Tax Credit Deferral InvestmentTaxCreditDeferral	400000	USD
CY2020	evrg	Investment Tax Credit Deferral InvestmentTaxCreditDeferral	0	USD
CY2019	evrg	Investment Tax Credit Deferral InvestmentTaxCreditDeferral	5200000	USD
CY2021	evrg	Investment Tax Credit Amortization InvestmentTaxCreditAmortization	5700000	USD
CY2020	evrg	Investment Tax Credit Amortization InvestmentTaxCreditAmortization	6000000.0	USD
CY2019	evrg	Investment Tax Credit Amortization InvestmentTaxCreditAmortization	4400000	USD
CY2021	evrg	Investment Tax Credit Total Net InvestmentTaxCreditTotalNet	-5300000	USD
CY2020	evrg	Investment Tax Credit Total Net InvestmentTaxCreditTotalNet	-6000000.0	USD
CY2019	evrg	Investment Tax Credit Total Net InvestmentTaxCreditTotalNet	800000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	117400000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	102200000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	97000000.0	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Life Insurance EffectiveIncomeTaxRateReconciliationNondeductibleExpenseLifeInsurance	0.010
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Life Insurance EffectiveIncomeTaxRateReconciliationNondeductibleExpenseLifeInsurance	0.016
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Life Insurance EffectiveIncomeTaxRateReconciliationNondeductibleExpenseLifeInsurance	0.018
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.010
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.043
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.050
CY2021	evrg	Effective Income Tax Rate Reconciliation Effect Of Regulatory Treatment Book Tax Differences EffectiveIncomeTaxRateReconciliationEffectOfRegulatoryTreatmentBookTaxDifferences	-0.054
CY2020	evrg	Effective Income Tax Rate Reconciliation Effect Of Regulatory Treatment Book Tax Differences EffectiveIncomeTaxRateReconciliationEffectOfRegulatoryTreatmentBookTaxDifferences	-0.053
CY2019	evrg	Effective Income Tax Rate Reconciliation Effect Of Regulatory Treatment Book Tax Differences EffectiveIncomeTaxRateReconciliationEffectOfRegulatoryTreatmentBookTaxDifferences	-0.045
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	0.028
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	0.046
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	0.049
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.003
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.003
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.004
CY2021	evrg	Effective Income Tax Rate Reconciliation Afudc Equity EffectiveIncomeTaxRateReconciliationAFUDCEquity	0.006
CY2020	evrg	Effective Income Tax Rate Reconciliation Afudc Equity EffectiveIncomeTaxRateReconciliationAFUDCEquity	0.005
CY2019	evrg	Effective Income Tax Rate Reconciliation Afudc Equity EffectiveIncomeTaxRateReconciliationAFUDCEquity	0.001
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Investment EffectiveIncomeTaxRateReconciliationTaxCreditsInvestment	0.004
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Investment EffectiveIncomeTaxRateReconciliationTaxCreditsInvestment	0.006
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Investment EffectiveIncomeTaxRateReconciliationTaxCreditsInvestment	0.005
CY2021	evrg	Effective Income Tax Rate Reconciliation Changes In Uncertain Tax Positions Net EffectiveIncomeTaxRateReconciliationChangesInUncertainTaxPositionsNet	0
CY2020	evrg	Effective Income Tax Rate Reconciliation Changes In Uncertain Tax Positions Net EffectiveIncomeTaxRateReconciliationChangesInUncertainTaxPositionsNet	0
CY2019	evrg	Effective Income Tax Rate Reconciliation Changes In Uncertain Tax Positions Net EffectiveIncomeTaxRateReconciliationChangesInUncertainTaxPositionsNet	-0.002
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.019
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.002
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.010
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.001
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.001
CY2021	evrg	Effective Income Tax Rate Reconciliation Officer Compensation Limitation EffectiveIncomeTaxRateReconciliationOfficerCompensationLimitation	0.005
CY2020	evrg	Effective Income Tax Rate Reconciliation Officer Compensation Limitation EffectiveIncomeTaxRateReconciliationOfficerCompensationLimitation	0.002
CY2019	evrg	Effective Income Tax Rate Reconciliation Officer Compensation Limitation EffectiveIncomeTaxRateReconciliationOfficerCompensationLimitation	0.001
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.004
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.002
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.004
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.116
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.140
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.124
CY2021Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards General Business DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness	375200000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards General Business DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness	379600000	USD
CY2021Q4	evrg	Deferred Tax Assets Income Taxes Refundable To Customers DeferredTaxAssetsIncomeTaxesRefundableToCustomers	336600000	USD
CY2020Q4	evrg	Deferred Tax Assets Income Taxes Refundable To Customers DeferredTaxAssetsIncomeTaxesRefundableToCustomers	418200000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	158300000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	227600000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	40200000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	51000000.0	USD
CY2021Q4	us-gaap	Deferred Tax Assets State Taxes DeferredTaxAssetsStateTaxes	146900000	USD
CY2020Q4	us-gaap	Deferred Tax Assets State Taxes DeferredTaxAssetsStateTaxes	145900000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	157600000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	152700000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	200000000.0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	181000000.0	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1414800000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1556000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	12800000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	14400000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1402000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1541600000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	2701100000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	2693700000	USD
CY2021Q4	evrg	Deferred Tax Liabilities Employee Benefit Costs Net DeferredTaxLiabilitiesEmployeeBenefitCostsNet	96800000	USD
CY2020Q4	evrg	Deferred Tax Liabilities Employee Benefit Costs Net DeferredTaxLiabilitiesEmployeeBenefitCostsNet	171400000	USD
CY2021Q4	evrg	Deferred Tax Liabilities Asset Retirement Obligation Regulatory Asset DeferredTaxLiabilitiesAssetRetirementObligationRegulatoryAsset	133700000	USD
CY2020Q4	evrg	Deferred Tax Liabilities Asset Retirement Obligation Regulatory Asset DeferredTaxLiabilitiesAssetRetirementObligationRegulatoryAsset	136700000	USD
CY2021Q4	evrg	Deferred Tax Liabilities Acquisition Premium Net DeferredTaxLiabilitiesAcquisitionPremiumNet	43900000	USD
CY2020Q4	evrg	Deferred Tax Liabilities Acquisition Premium Net DeferredTaxLiabilitiesAcquisitionPremiumNet	46900000	USD
CY2021Q4	evrg	Deferred Tax Liabilities Other Regulatory Assets DeferredTaxLiabilitiesOtherRegulatoryAssets	152100000	USD
CY2020Q4	evrg	Deferred Tax Liabilities Other Regulatory Assets DeferredTaxLiabilitiesOtherRegulatoryAssets	28800000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	136300000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	128900000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	3263900000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	3206400000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1861900000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1664800000	USD
CY2021Q4	us-gaap	Tax Credit Carryforward Amount TaxCreditCarryforwardAmount	373600000	USD
CY2021Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	33600000	USD
CY2020Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	42200000	USD
CY2021Q4	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	7100000	USD
CY2021Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	33600000	USD
CY2021	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-1500000	USD
CY2020Q2	evrg	Increase Decrease In Net Deferred Income Tax Liabilities Dueto Tax Reform IncreaseDecreaseInNetDeferredIncomeTaxLiabilitiesDuetoTaxReform	-233800000	USD
CY2020Q2	evrg	Increase Decrease In Net Deferred Income Tax Liabilities For Revaluation Of Regulated Deferred Income Tax Assets And Liabilities IncreaseDecreaseInNetDeferredIncomeTaxLiabilitiesForRevaluationOfRegulatedDeferredIncomeTaxAssetsAndLiabilities	-400400000	USD
CY2020Q2	evrg	Increase Decreasein Net Deferred Income Tax Liabilities For Tax Gross Up Adjustment For Ratemaking Purposes Due To Tax Reform IncreaseDecreaseinNetDeferredIncomeTaxLiabilitiesForTaxGrossUpAdjustmentForRatemakingPurposesDueToTaxReform	-31700000	USD
CY2020Q2	evrg	Income Tax Expense From Tax Reform Total IncomeTaxExpenseFromTaxReformTotal	-13800000	USD
CY2020Q2	evrg	Increase Decrease In Unamortized Investment Tax Credits IncreaseDecreaseInUnamortizedInvestmentTaxCredits	-183600000	USD
CY2020Q2	evrg	Increase Decrease In Unamortized Investment Tax Credits For Tax Gross Up Adjustment For Ratemaking Purposes IncreaseDecreaseInUnamortizedInvestmentTaxCreditsForTaxGrossUpAdjustmentForRatemakingPurposes	-16900000	USD
CY2021	evrg	Kansas State Statutory Income Tax Rate Thru2020 KansasStateStatutoryIncomeTaxRateThru2020	0.07
CY2021	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	5100000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	7700000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	5200000	USD
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	2500000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	3100000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	2900000	USD
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	21800000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	22900000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	23800000	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	5900000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	2100000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	4000000.0	USD
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	280300000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	296600000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	313000000.0	USD
CY2021	us-gaap	Lease Cost LeaseCost	315600000	USD
CY2020	us-gaap	Lease Cost LeaseCost	332400000	USD
CY2019	us-gaap	Lease Cost LeaseCost	348900000	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	20700000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	22200000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	21700000	USD
CY2021	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	2600000	USD
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	2800000	USD
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	2800000	USD
CY2021	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	5300000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	5600000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	5000000.0	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	16400000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	6900000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	10400000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	1400000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	5600000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	8300000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	7800000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	67600000	USD
CY2021Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	21300000	USD
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	46300000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	6700000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	5500000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	4700000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	4400000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	38500000	USD
CY2021Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P13Y3M18D
CY2021Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.056
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	18800000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	15300000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	12500000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	8500000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	5900000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	30300000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	91300000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	7300000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y7M6D
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.022
CY2021	dei	Auditor Firm AuditorFirmId	34

Files In Submission

Name	View Source	Status
0001711269-22-000008-index-headers.html	Edgar Link	pending
0001711269-22-000008-index.html	Edgar Link	pending
0001711269-22-000008.txt	Edgar Link	pending
0001711269-22-000008-xbrl.zip	Edgar Link	pending
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$EVRG
Evergy, Inc. Stock $evrg

2021 Form 10-K Financial Statement

#000171126922000008 Filed on February 25, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EVRG Evergy, Inc. Stock $evrg

2021 Form 10-K Financial Statement

#000171126922000008 Filed on February 25, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EVRG
Evergy, Inc. Stock $evrg