OGE


Line plots across dimensions of each concept
Line plots across concepts
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesAuthorized

us-gaap:CommonStockSharesOutstanding
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted
dei:LegalEntity, us-gaap:AwardType
us-gaap:AllocatedShareBasedCompensationExpense
dei:LegalEntity, us-gaap:AwardType, us-gaap:PlanName
us-gaap:AwardType
us-gaap:AwardType, us-gaap:PlanName

us-gaap:ComprehensiveIncomeNetOfTax
dei:LegalEntity

us-gaap:CostOfGoodsAndServicesSold
dei:LegalEntity
us-gaap:StatementBusinessSegments
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee
us-gaap:CostOfRevenue

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
dei:LegalEntity

us-gaap:IncomeTaxExpenseBenefit
dei:LegalEntity
us-gaap:StatementBusinessSegments

us-gaap:InterestExpense
dei:LegalEntity
us-gaap:StatementBusinessSegments

us-gaap:InterestExpenseLongTermDebt
dei:LegalEntity

us-gaap:NetIncomeLoss
dei:LegalEntity
dei:LegalEntity, us-gaap:StatementEquityComponents

us-gaap:NonoperatingIncomeExpense
dei:LegalEntity

us-gaap:OperatingExpenses
dei:LegalEntity

us-gaap:OperatingIncomeLoss
dei:LegalEntity
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee
us-gaap:StatementBusinessSegments

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherNonoperatingIncomeExpense
us-gaap:StatementBusinessSegments

us-gaap:ProfitLoss
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee
us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
dei:LegalEntity
oge:NonRetailRevenues
us-gaap:MajorCustomers

us-gaap:Revenues
dei:LegalEntity
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee
us-gaap:StatementBusinessSegments

us-gaap:Assets
dei:LegalEntity
us-gaap:StatementBusinessSegments

us-gaap:Liabilities
dei:LegalEntity

us-gaap:LiabilitiesAndStockholdersEquity
dei:LegalEntity

us-gaap:StockholdersEquity
dei:LegalEntity
dei:LegalEntity, us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent
dei:LegalEntity
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:AccountsReceivableNetCurrent
dei:LegalEntity

us-gaap:InventoryNet

us-gaap:OtherAssetsCurrent
dei:LegalEntity
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee
us-gaap:AssetsNoncurrent

us-gaap:PropertyPlantAndEquipmentGross
dei:LegalEntity
dei:LegalEntity, us-gaap:PropertyPlantAndEquipmentByType
us-gaap:JointlyOwnedUtilityPlant

us-gaap:ConstructionInProgressGross
dei:LegalEntity

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
dei:LegalEntity
dei:LegalEntity, us-gaap:PropertyPlantAndEquipmentByType
us-gaap:JointlyOwnedUtilityPlant

us-gaap:PropertyPlantAndEquipmentNet
dei:LegalEntity
dei:LegalEntity, us-gaap:PropertyPlantAndEquipmentByType
us-gaap:JointlyOwnedUtilityPlant

us-gaap:OperatingLeaseRightOfUseAsset
dei:LegalEntity

us-gaap:OtherAssetsNoncurrent
dei:LegalEntity

us-gaap:AccountsPayableCurrent
dei:LegalEntity

us-gaap:DividendsPayableCurrent

us-gaap:LiabilitiesCurrent
dei:LegalEntity
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:OtherLiabilitiesCurrent
dei:LegalEntity

us-gaap:TaxesPayableCurrent
dei:LegalEntity
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee
us-gaap:LiabilitiesNoncurrent

us-gaap:LongTermDebt
dei:LegalEntity
us-gaap:DebtInstrument

us-gaap:LongTermDebtNoncurrent
dei:LegalEntity

us-gaap:DeferredTaxLiabilitiesNoncurrent
dei:LegalEntity

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
dei:LegalEntity

us-gaap:OtherLiabilitiesNoncurrent
dei:LegalEntity

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
dei:LegalEntity

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree
dei:LegalEntity

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour
dei:LegalEntity

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive
dei:LegalEntity

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
dei:LegalEntity

us-gaap:OperatingLeaseLiability
dei:LegalEntity

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue
dei:LegalEntity

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
dei:LegalEntity

us-gaap:StockholdersEquity
dei:LegalEntity
dei:LegalEntity, us-gaap:StatementEquityComponents

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock
dei:LegalEntity

us-gaap:CommonStocksIncludingAdditionalPaidInCapital
dei:LegalEntity

us-gaap:RetainedEarningsAccumulatedDeficit
dei:LegalEntity

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:TreasuryStockValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
dei:LegalEntity
dei:LegalEntity, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInInvestingActivities
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInFinancingActivities
dei:LegalEntity

us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease

us-gaap:IncreaseDecreaseInAccountsPayable
dei:LegalEntity

us-gaap:IncreaseDecreaseInAccountsReceivable
dei:LegalEntity

us-gaap:IncreaseDecreaseInInventories
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInOperatingActivities
dei:LegalEntity

us-gaap:NetIncomeLoss
dei:LegalEntity
dei:LegalEntity, us-gaap:StatementEquityComponents

us-gaap:ProfitLoss
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee
us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInInvestingActivities
dei:LegalEntity

us-gaap:PaymentsToAcquireProductiveAssets
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInFinancingActivities
dei:LegalEntity

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:DebtInstrumentInterestRateStatedPercentage
dei:LegalEntity, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:Range, us-gaap:DebtInstrument, us-gaap:ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTerms

us-gaap:UnrecognizedTaxBenefits
us-gaap:ValuationAllowanceByDeferredTaxAsset

us-gaap:ProceedsFromRepaymentsOfShortTermDebt
dei:EntityByLocation, us-gaap:RetirementPlanType
oge:AdditionalPensionExpenseToMeetStateRequirements
us-gaap:StatementEquityComponents
oge:AdjustmentstoAdditionalPaidinCapitalSharebasedCompensationRequisiteServicePeriodRecognitionNumberofShares
dei:LegalEntity, us-gaap:RetirementPlanType
oge:AmountAttributableToParent
us-gaap:RetirementPlanType
oge:AmountAttributabletoUnconsolidatedAffiliates
dei:LegalEntity, us-gaap:RetirementPlanType
oge:CapitalizedPortionOfNetPeriodicBenefitCost
us-gaap:RetirementPlanType
dei:LegalEntity
oge:ChangesInAdvancesWithParent
dei:LegalEntity, us-gaap:RetirementPlanType
oge:DefinedBenefitPlanNetPeriodicBenefitCostCreditNetofUnconsolidatedAffiliates
us-gaap:RetirementPlanType

oge:EquityinEarningsAmortizationofBasisDifference
dei:LegalEntity

oge:ExpectedSettlementCharge

oge:Increasedecreaseindistributionsfromunconsolidatedaffiliates

oge:InvestmentInGridEnhancement
oge:OCCRuling, us-gaap:Range
oge:LostRevenuesOnPlantInvestmentsForCustomers
us-gaap:Range
us-gaap:PublicUtilitiesRegulatoryProceeding
oge:OCCRevenueRequirement

oge:OtherComprehensiveIncomeAmortizationOfDefinedBenefitPostretirementPlansNetPriorServiceCostRecognizedInNetPeriodicPostretirementCostNetOfTax

oge:OtherComprehensiveIncomeLossAmortizationDefinedBenefitPostretirementPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostTaxEffect

oge:OtherComprehensiveIncomeReclassificationOfDefinedBenefitPostretirementPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax

oge:OtherComprehensiveIncomeReclassificationOfDefinedBenefitPostretirementPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax

oge:PercentOfPrincipalAmountSubjectToOptionalTender

oge:ProportionateUnconsolidatedAffiliateNetIncome

oge:RevenuesfromAlternativeRevenuePrograms
dei:LegalEntity

us-gaap:AssetImpairmentCharges

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:DeferredIncomeTaxesAndTaxCredits
dei:LegalEntity
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanContributionsByEmployer
dei:LegalEntity
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
dei:EntityByLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost
us-gaap:RetirementPlanType

us-gaap:DepreciationAmortizationAndAccretionNet

us-gaap:DepreciationAndAmortization
dei:LegalEntity
us-gaap:StatementBusinessSegments

us-gaap:DistributionMadeToLimitedPartnerDistributionsDeclaredPerUnit
dei:LegalEntity
us-gaap:DividendsCommonStock
dei:LegalEntity, us-gaap:StatementEquityComponents

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
dei:LegalEntity
dei:LegalEntity
us-gaap:EquityMethodInvestmentDividendsOrDistributions

us-gaap:IncomeLossFromEquityMethodInvestments
us-gaap:StatementBusinessSegments
dei:LegalEntity
us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable

us-gaap:IncreaseDecreaseInDeferredFuelCosts
dei:LegalEntity

us-gaap:IncreaseDecreaseInIncomeTaxesReceivable

us-gaap:IncreaseDecreaseInOtherCurrentAssets
dei:LegalEntity

us-gaap:IncreaseDecreaseInOtherCurrentLiabilities
dei:LegalEntity

us-gaap:IncreaseDecreaseInOtherNoncurrentAssets
dei:LegalEntity

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities
dei:LegalEntity

us-gaap:IncreaseDecreaseInOtherRegulatoryAssets
dei:LegalEntity

us-gaap:IncreaseDecreaseInRegulatoryLiabilities
dei:LegalEntity

us-gaap:IncrementalCommonSharesAttributableToContingentlyIssuableShares

us-gaap:InterestExpenseShortTermBorrowings
dei:LegalEntity

us-gaap:InvestmentsInAndAdvancesToAffiliatesAtFairValuePeriodIncreaseDecrease

us-gaap:LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
dei:LegalEntity
us-gaap:RetirementPlanType
us-gaap:OtherComprehensiveIncomeFinalizationOfPensionAndNonPensionPostretirementPlanValuationTax
us-gaap:RetirementPlanType
us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToNoncontrollingInterest
us-gaap:RetirementPlanType
us-gaap:OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationBeforeTax

us-gaap:OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:RetirementPlanType
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax
us-gaap:RetirementPlanType
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax
us-gaap:RetirementPlanType
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax
us-gaap:RetirementPlanType
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherCostAndExpenseOperating
dei:LegalEntity
us-gaap:StatementBusinessSegments

us-gaap:OtherNonoperatingExpense
dei:LegalEntity

us-gaap:OtherNonoperatingIncome
dei:LegalEntity

us-gaap:PensionAndOtherPostretirementBenefitExpense
dei:LegalEntity

us-gaap:ProceedsFromContributedCapital
dei:LegalEntity
dei:LegalEntity
us-gaap:ProceedsFromLoans

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions
dei:LegalEntity

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity
dei:LegalEntity
dei:EntityByLocation
us-gaap:PublicUtilitiesRequestedRateIncreaseDecreaseAmount

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:RetirementPlanType, us-gaap:StatementEquityComponents
us-gaap:RetirementPlanType, us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent
dei:LegalEntity, us-gaap:AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyType, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RelatedPartyTransactionPurchasesFromRelatedParty
dei:LegalEntity, us-gaap:AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyType, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty
dei:LegalEntity, us-gaap:RelatedPartyTransactionsByRelatedParty
dei:LegalEntity, us-gaap:AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyType, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RevenueFromRelatedParties
dei:LegalEntity, us-gaap:RelatedPartyTransactionsByRelatedParty
dei:LegalEntity, us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted
dei:LegalEntity, us-gaap:AwardType
us-gaap:AwardType
us-gaap:PlanName
us-gaap:StockIssuedDuringPeriodSharesNewIssues

us-gaap:TaxesExcludingIncomeAndExciseTaxes
dei:LegalEntity
us-gaap:StatementBusinessSegments

us-gaap:TreasuryStockAcquiredAverageCostPerShare

us-gaap:TreasuryStockSharesAcquired
us-gaap:StatementEquityComponents

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents

dei:EntityCommonStockSharesOutstanding

oge:AccelerationofIndebtednessofCreditFacility
dei:LegalEntity
oge:AdvancesFromParent
dei:LegalEntity
oge:AdvancesToParent

oge:ArkansasEnvironmentalRefund
dei:LegalEntity, us-gaap:AwardType
oge:AwardsOtherThanOptionsFullyVested
us-gaap:AwardType
oge:ComponentsOfBenefitObligationRegulatoryAsset, us-gaap:RetirementPlanType
oge:ComponentsOfBenefitObligationRegulatoryAsset

oge:DeferredTaxLiabilitiesIncomeTaxesRefundableToCustomersNet
dei:LegalEntity

oge:DeferredTaxLiabilitiesUnamortizedBondRedemptionCosts
dei:LegalEntity

oge:EstimatedRefundtoSPP
oge:EstimatedRefundtoSPP

oge:LesseeOperatingLeaseContingentLiability

oge:NonCurrentDeferredTaxAssetNetOperatingLosses
dei:LegalEntity

oge:NonCurrentDeferredTaxAssetsDeferredFederalInvestmentTaxCredits
dei:LegalEntity

oge:NonCurrentDeferredTaxAssetsRegulatoryLiabilities
dei:LegalEntity

oge:NonCurrentDeferredTaxAssetsStateTaxCredits
dei:LegalEntity
dei:LegalEntity, us-gaap:TaxCreditCarryforward
us-gaap:TaxCreditCarryforward

oge:NonCurrentDeferredTaxLiabilitiesInvestmentinEnableMidstreamPartners

oge:NonpaymentOfUninsuredJudgments

oge:PercentOfIntangiblePlantBalanceAmortizable

oge:PercentOfIntangiblePlantBalanceAmortizableThereafter
dei:LegalEntity
oge:PercentageShareOfManagementRights
oge:OCCFavorToCoopRuling
oge:PlantInvestmentsForCustomers
oge:OCCRuling

oge:PostretirementPlanExpectedFutureBenefitPaymentsInYearFive
dei:LegalEntity

oge:PostretirementPlanExpectedFutureBenefitPaymentsInYearFour
dei:LegalEntity

oge:PostretirementPlanExpectedFutureBenefitPaymentsInYearOne
dei:LegalEntity

oge:PostretirementPlanExpectedFutureBenefitPaymentsInYearThree
dei:LegalEntity

oge:PostretirementPlanExpectedFutureBenefitPaymentsInYearTwo
dei:LegalEntity

oge:PostretirementPlanExpectedFutureBenefitPaymentsThereafter
dei:LegalEntity
dei:LegalEntity
oge:RatioofConsolidatedDebttoConsolidatedCapitalization
dei:LegalEntity
oge:RetainedEarningsRestricted
dei:LegalEntity
oge:RetainedEarningsUnrestricted
us-gaap:StatementScenario
us-gaap:AccountsReceivableRelatedPartiesCurrent

us-gaap:AccruedEnvironmentalLossContingenciesNoncurrent

us-gaap:AccumulatedDeferredInvestmentTaxCredit
dei:LegalEntity
us-gaap:RetirementPlanType, us-gaap:StatementEquityComponents
us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax

us-gaap:AllowanceForDoubtfulAccountsReceivable
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:AlternativeInvestment
oge:ComponentOfAccumulatedOtherComprehensiveIncome
us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentAfterTax

us-gaap:AssetRetirementObligation

us-gaap:CapitalizationLongtermDebtAndEquity
dei:LegalEntity
dei:LegalEntity
us-gaap:CapitalizedComputerSoftwareNet
us-gaap:PlanName
us-gaap:CommonStockCapitalSharesReservedForFutureIssuance

us-gaap:CustomerDepositsCurrent
dei:LegalEntity

us-gaap:CustomerRefundLiabilityCurrent
dei:LegalEntity
dei:LegalEntity, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentCarryingAmount

us-gaap:DebtInstrumentFaceAmount
dei:LegalEntity, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
dei:LegalEntity
us-gaap:DebtInstrumentUnamortizedDiscount

us-gaap:DeferredFuelCost
dei:LegalEntity
us-gaap:RegulatoryAsset
dei:LegalEntity, us-gaap:TaxCreditCarryforward
us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
us-gaap:TaxCreditCarryforward

us-gaap:DeferredTaxAssetsOther
dei:LegalEntity

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards
dei:LegalEntity
dei:LegalEntity, us-gaap:TaxCreditCarryforward
us-gaap:TaxCreditCarryforward

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits
dei:LegalEntity

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities
dei:LegalEntity

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts
dei:LegalEntity

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations
dei:LegalEntity

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther

us-gaap:DeferredTaxLiabilitiesDerivatives

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses
dei:LegalEntity

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment
dei:LegalEntity

us-gaap:DeferredTaxLiabilitiesRegulatoryAssets
dei:LegalEntity
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
dei:LegalEntity

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
dei:LegalEntity

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
dei:LegalEntity

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
dei:LegalEntity

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
dei:LegalEntity

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
dei:LegalEntity
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear
us-gaap:FairValueByAssetClass
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
us-gaap:Range, us-gaap:FairValueByAssetClass

us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1

us-gaap:EmployeeRelatedLiabilitiesCurrent
dei:LegalEntity

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
dei:LegalEntity
dei:LegalEntity, us-gaap:AwardType
us-gaap:AwardType

us-gaap:EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity

us-gaap:EquityMethodInvestments
us-gaap:StatementBusinessSegments

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue

us-gaap:IncomeTaxesReceivable

us-gaap:InterestPayableCurrent
dei:LegalEntity
us-gaap:JointlyOwnedUtilityPlant
us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress
us-gaap:JointlyOwnedUtilityPlant
us-gaap:JointlyOwnedUtilityPlantProportionateOwnershipShare

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
dei:LegalEntity
dei:LegalEntity
us-gaap:LettersOfCreditOutstandingAmount

us-gaap:LiabilitiesOtherThanLongtermDebtNoncurrent
dei:LegalEntity

us-gaap:LineOfCredit
dei:LegalEntity

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
us-gaap:DebtInstrument
us-gaap:LongTermDebtFairValue
us-gaap:Range
us-gaap:LossContingencyEstimateOfPossibleLoss

us-gaap:OperatingLeasesFutureMinimumPaymentsDue
dei:LegalEntity

us-gaap:OperatingLeasesFutureMinimumPaymentsDueCurrent

us-gaap:OperatingLeasesFutureMinimumPaymentsDueInFiveYears

us-gaap:OperatingLeasesFutureMinimumPaymentsDueInFourYears

us-gaap:OperatingLeasesFutureMinimumPaymentsDueInThreeYears

us-gaap:OperatingLeasesFutureMinimumPaymentsDueInTwoYears
dei:LegalEntity, us-gaap:TaxCreditCarryforward
us-gaap:OperatingLossCarryforwards
us-gaap:TaxCreditCarryforward

us-gaap:OtherAssetsMiscellaneousNoncurrent
dei:LegalEntity

us-gaap:OtherCommitment

us-gaap:OtherInventorySupplies
dei:LegalEntity

us-gaap:OtherInvestments
dei:LegalEntity

us-gaap:OtherLongTermInvestments
dei:LegalEntity

us-gaap:PostemploymentBenefitsLiabilityCurrentAndNoncurrent
dei:LegalEntity

us-gaap:PublicUtilitiesInventory
dei:LegalEntity
us-gaap:PublicUtilitiesInventory

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustmentsRelatedAccumulatedDepreciation1
dei:LegalEntity, us-gaap:PropertyPlantAndEquipmentByType

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentPlantInService
dei:LegalEntity

us-gaap:RegulatoryAssetsCurrent
us-gaap:RegulatoryAsset

us-gaap:RegulatoryAssetsNoncurrent
dei:EntityByLocation, us-gaap:RegulatoryAsset
dei:LegalEntity
us-gaap:RegulatoryAsset

us-gaap:RegulatoryLiabilityCurrent
us-gaap:RegulatoryLiability

us-gaap:RegulatoryLiabilityNoncurrent
dei:LegalEntity
us-gaap:RegulatoryLiability
dei:LegalEntity, us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
dei:LegalEntity, us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:AwardType
dei:LegalEntity, us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
dei:LegalEntity
us-gaap:SharePrice
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
dei:LegalEntity, us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding
us-gaap:AwardType

us-gaap:ShortTermBankLoansAndNotesPayable

us-gaap:ShortTermBorrowings
dei:LegalEntity
us-gaap:ShortTermDebtWeightedAverageInterestRate
dei:LegalEntity, us-gaap:TaxCreditCarryforward
us-gaap:TaxCreditCarryforwardAmount
us-gaap:TaxCreditCarryforward

us-gaap:TreasuryStockCarryingBasis

us-gaap:TreasuryStockCommonShares
us-gaap:StatementEquityComponents

us-gaap:UnamortizedDebtIssuanceExpense
dei:LegalEntity

us-gaap:UnbilledReceivablesCurrent
dei:LegalEntity
dei:LegalEntity
us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
dei:LegalEntity
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary
dei:LegalEntity
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary
dei:LegalEntity
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary
dei:LegalEntity
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary
dei:LegalEntity
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary

us-gaap:ValuationAllowancesAndReservesBalance

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Other Nonoperating Income Expense
Balance Sheet
Cash And Cash Equivalents At Carrying Value
Assets
Cash And Cash Equivalents At Carrying Value
Current Assets
Cash And Cash Equivalents At Carrying Value
NonCurrent Assets
Operating Lease Right Of Use Asset
PropertyPlantAndEquipmentNet
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Liabilities
Operating Lease Liability
Current Liabilities
Employee Related Liabilities Current
Noncurrent Liabilities
Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
Per Share
Common Stock Dividends Per Share Declared
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Increase Decrease In Accounts Payable
NetCashProvidedByUsedInFinancingActivities
Proceeds From Payments For Other Financing Activities
Shares
Common Stock Shares Outstanding
NonoperatingIncomeExpense
Other Nonoperating Income Expense
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CommonStockValue NANA2.0NANANA2.0NANANA2.0NANANA2.0NANANA2.0NANANA2.0NANANA2.0NANANA2.0NANANA1.0NANANA1.0NANANA1.0NANANA
us-gaap:CommonStockSharesAuthorized NANA450.0NANANA450.0NANANA450.0NANANA450.0NANANA450.0NANANA450.0NANANA450.0NANA450.0450.0450.0450.0NA225.0NANANANANANANA0.000125NANANA
us-gaap:CommonStockSharesOutstanding NANA200.1NANANA200.1NANANA199.7NANANA199.7NANANA199.7NANANA199.7NANANA199.4NANANA198.5NANANA98.8NANANA98.1NANANA9.76e-05NANANA
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock▇▇▇▇▇▇▇███▁▁▁▁▁▁▁▁▁200.1200.1200.1200.1200.1200.1200.1200.2200.2200.2199.7199.7199.7199.7199.7199.7199.7199.7199.7NANANA199.7NANANA199.4NANANANANANANANANANANANANANANANANANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁200.4200.1NA200.4200.5200.2NA200.8200.6200.5NA200.6200.5200.2NA200.1199.9200.0NA199.9199.8199.7NA199.7199.6199.5NA200.2200.0199.5NA199.7199.499.4NA99.198.998.8NA99.399.39.91e-05NA99.098.79.85e-05
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁200.2200.1NA200.1200.2200.2NA200.2200.2199.9NA199.7199.7199.7NA199.7199.7199.7NA199.7199.7199.7NA199.7199.6199.5NA199.3199.2198.8NA198.4198.398.9NA98.798.698.3NA98.098.09.77e-05NA97.497.39.709999999999999e-05
us-gaap:EarningsPerShareBasic ▆▅▅▆▆▁▅▇▆▅▅▇▆▅▇▆▆▅▅▆▆▅▅▆▆▅▅▆▆▅▅▇▆▅▆█▆▆▆█▇▅▅█▆▅0.560.260.26999999999999990.890.43-2.460.181.250.50.240.271.030.550.281.480.920.520.180.290.920.350.130.150.550.440.220.290.940.510.250.291.080.460.230.391.880.950.380.371.821.050.250.321.670.790.25
us-gaap:EarningsPerShareDiluted ▆▅▅▆▆▁▅▇▆▅▅▇▆▅▇▆▆▅▅▆▆▅▅▆▆▅▅▆▆▅▅▇▆▅▆█▇▆▆█▇▅▅█▆▅0.560.260.26999999999999990.890.43-2.460.181.250.50.240.271.020.550.271.480.920.520.180.290.920.350.130.150.550.440.220.290.940.50.250.291.080.460.230.391.870.950.380.371.81.040.250.311.650.780.25
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 COGS Ratio dei:LegalEntity oge:OgAndE▁█577.41630.6NANA503.5431.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 COGS Ratio us-gaap:StatementBusinessSegments oge:ElectricUtility▂█▁▃▁▁▁▃▁▁▁▃▂▁▁▃▂▁▂▃▂▁▁▃▂▁▂▃▂▂▁▃▂▁577.41630.6485.40000000000026702.1503.5431.3472.5755.4513.7490.0511.8698.8567.0492.7501.9716.8586.4456.0530.8743.9551.4433.1447.1719.8549.9480.1526.2754.7611.8560.4508.9723.2574.6455.5NANANANANANANANANANANANA
 Cost Ratio us-gaap:EquityMethodInvestmentNonconsolidatedInvestee us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees▅█▄▂▁▃▄▄▄787.0970.0704.0596.0515.0648.0731.0699.0735.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin dei:LegalEntity oge:OgAndE▁█577.41630.6NANA503.5431.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin us-gaap:EquityMethodInvestmentNonconsolidatedInvestee us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees▅█▄▂▁▃▄▄▄787.0970.0704.0596.0515.0648.0731.0699.0735.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin us-gaap:StatementBusinessSegments oge:ElectricUtility▂█▁▃▁▁▁▃▁▁▁▃▂▁▁▃▂▁▂▃▂▁▁▃▂▁▂▃▂▂▁▃577.41630.6485.40000000000026702.1503.5431.3472.5755.4513.7490.0511.8698.8567.0492.7501.9716.8586.4456.0530.8743.9551.4433.1447.1719.8549.9480.1526.2754.7611.8560.4508.9723.2NANANANANANANANANANANANANANA
 Operating Margin dei:LegalEntity oge:OgAndE▁█577.41630.6NANA503.5431.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:EquityMethodInvestmentNonconsolidatedInvestee us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees▁█787.0970.0NA596.0515.0648.0NA699.0735.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:StatementBusinessSegments oge:ElectricUtility▂█▁▃▁▁▁▃▂▁▂▃▂▁▁▃▂▁▂▃▂▁▁▃▂▁▂▃▂▂▂▃▂▁▁▃▂▁▁▃▂▁▁▃▂577.41630.6485.40000000000026702.1503.5431.3472.5755.4513.7490.0511.8698.8567.0492.7501.9716.8586.4456.0530.8743.9551.4433.1447.1719.8549.9480.1526.2754.7611.8560.4508.9723.2574.6455.5465.5721.0528.0426.7445.9774.8568.7422.1430.1723.0512.8NA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 TTM Greenblatt ROC _ _▃▁▂▇▃▁▂▇▃▁▂▆▃▂▂▆▄▁▂▇▃▁▁▇▃▁▂▇▄▂▂▇▄▂▃█▅▃▃█▅▂▂129.548.682.50000000000006258.0125.456.370.3274.3110.049.758.0227.3131.760.579.7243.3143.543.882.2257.3125.937.946.8250.8127.256.485.1248.1141.861.873.3260.9143.975.497.3304.0177.398.396.9299.7182.267.981.4NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 us-gaap:AllocatedShareBasedCompensationExpense dei:LegalEntity,us-gaap:AwardType oge:OgAndE,us-gaap:PerformanceShares█▁0.50.4NANA0.60.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AllocatedShareBasedCompensationExpense dei:LegalEntity,us-gaap:AwardType oge:OgAndE,us-gaap:StockCompensationPlan█▁0.60.4NANA0.70.9NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AllocatedShareBasedCompensationExpense dei:LegalEntity,us-gaap:AwardType,us-gaap:PlanName oge:OgAndE,us-gaap:PerformanceShares,oge:TotalShareholderReturn█▁0.50.4NANA0.60.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType us-gaap:PerformanceShares▄▄▅▄▄▄▆█▅▅▇▇▆▅█▁▅▄▃▁▃▄▅▃▅▅▇▄▅▇▅▆▅▅█▅▅▅█▅▅1.92.02.82.12.11.93.04.62.72.73.63.93.12.74.30.22.42.11.4-0.11.51.72.31.12.52.43.92.12.33.72.43.12.62.64.52.62.62.54.42.72.7NANANANANA
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType us-gaap:RestrictedStock▇█▆▆▅▃▃▆▅▆▃▂▂▂▂▃▂▂▂▂▃▂▂▂▃▂▁▂▂▃▃▃▃▃▃▃▅0.40.50.30.30.20.10.10.30.20.30.10.00.00.00.00.10.00.00.00.00.10.00.00.00.10.0-0.10.00.00.10.10.10.10.10.10.10.2NA0.30.20.2NANANANANA
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType us-gaap:StockCompensationPlan▄▅▅▄▄▄▅█▅▅▆▇▅▅▇▂▄▄▃▁▃▄▄▃▅▄▆▄▄▆▅▆▅▅█▅▅▅█▅▅2.32.53.12.42.32.03.14.92.93.03.73.93.12.74.30.32.42.11.4-0.11.61.72.31.12.62.43.82.12.33.82.53.22.72.74.62.72.82.74.72.92.9NANANANANA
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType,us-gaap:PlanName us-gaap:PerformanceShares,oge:PerformanceUnitsRelatedToEarningsPerShareNANA0.50.20.10.21.12.30.40.51.51.91.00.71.6-1.40.60.60.3-1.30.40.60.4-0.80.60.51.50.10.41.70.40.60.70.62.20.70.60.71.80.80.8NANANANANA
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType,us-gaap:PlanName us-gaap:PerformanceShares,oge:TotalShareholderReturn▄▅▆▄▅▄▄▆▆▆▅▅▅▅█▃▄▃▁▁▁▁▄▄▄▄▇▅▄▅▅▇▄▅▆▄▅▄█▄▄1.92.02.31.92.01.71.92.32.32.22.12.02.12.02.71.61.81.51.11.21.11.11.91.91.91.92.42.01.92.02.02.51.92.02.31.92.01.82.61.91.9NANANANANA
us-gaap:ComprehensiveIncomeNetOfTax █▁113.656.2NA179.686.8-492.7NA251.6101.253.9NA208.5111.455.2NA191.0105.636.6NA184.076.825.630.4115.688.243.444.3187.6101.149.681.3216.686.723.930.4186.094.535.631.3184.9108.238.139.4157.190.622.7
us-gaap:CostOfGoodsAndServicesSold ▁█▁▁▁▁▁▂▁▁▂▂▁▁▁▂▂▁▂▂▁▁▁▂▁▁▂▂▂▂▂▂▂▃200.01346.8163.1209.1137.4135.0161.6234.0178.7212.6228.9244.4208.7210.5201.1255.7232.1208.7234.7269.8197.7177.9182.7259.8210.9211.6237.0305.3270.9293.4232.3273.0370.6553.0NANANANANANANANANANANANA
 us-gaap:CostOfRevenue us-gaap:EquityMethodInvestmentNonconsolidatedInvestee us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees▆█▄▂▁▂▄▃▄426.0519.0312.0250.0177.0226.0321.0263.0317.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▇▇▇█▇▁▆█▇▆▇█▇▇▇█▇▆▇█▇▆▆▇▇▆▇█▇▇▇█▇▆▆█▇▇▇█▇▆▆█▇123.063.378.6233.2113.5-726.439.0271.7111.441.368.6235.4128.665.196.5265.8151.456.076.1262.7112.135.442.4147.7122.556.194.0258.1143.573.077.7275.9126.943.656.0260.7137.565.963.2261.7157.142.349.2238.3118.2NA
us-gaap:IncomeTaxExpenseBenefit ▆▆▇▇▇▁▆▇▆▆▆▇▇▆▂█▇▇▇█▇▆▆▇▇▆▇█▇▇▇█▇▇▆█▇▇▇█▇▆▇█▇▇10.110.623.855.827.6-234.63.620.811.2-5.813.930.317.910.1-198.382.446.620.018.279.140.610.213.036.535.012.935.670.842.723.720.160.733.915.612.568.335.918.420.080.347.812.615.474.840.330.5
us-gaap:InterestExpense ▆▆▆▆▇▅▄▆▃▂▄▅▇▅▃▃▄▂▂▂▃▃▃▄▅▄▃▄▆▃▂▁▄▇██▇▆▄▃▂▁▂▃▁▁39.939.439.639.840.838.337.839.635.934.637.838.740.938.635.835.937.135.034.435.436.036.336.637.038.037.435.937.239.435.935.333.737.341.242.041.640.440.136.835.534.534.135.236.434.034.1
us-gaap:InterestExpenseLongTermDebt ▆▆▆▆▇▅▅▆▁▂▆█▇▇▇▆▇▄▄▄▄▄▅▅▅▅▄▅▆▄▃▄▄▇██▇▇▆▅▄▄▄▅▂▂37.838.438.738.738.836.636.437.531.832.637.940.239.739.639.838.739.235.935.935.835.735.836.937.037.036.935.436.337.835.134.935.036.039.740.640.238.939.237.537.435.835.436.036.333.433.6
us-gaap:NetIncomeLoss █▁112.952.7NA177.485.9-491.8NA250.9100.247.1NA205.1110.755.0NA183.4104.836.057.9183.671.525.229.4111.287.543.258.4187.3100.849.357.6215.291.723.138.5185.593.937.136.4178.7103.024.830.7163.177.324.2
us-gaap:NonoperatingIncomeExpense █████▁█████████████████▇██████████▇▇▇██▇███▇▇█33.454.135.715.028.9-744.46.537.037.326.248.446.837.843.252.658.445.047.228.340.822.233.832.2-66.133.337.144.847.241.147.139.748.720.39.40.7-1.70.67.73.1-2.59.48.53.00.50.73.0
us-gaap:OperatingExpenses ▆▅▅▅▅▅▅▅▄▄▄▄▄▃▃▃▃▂▃▃▄▃▃▃▃▃▂▂▂▂▂▁▃▇█▇▇▆▆▆▅▅▆▅▄▃247.9235.2239.8235.0240.7240.0240.6247.1225.0227.7224.9227.1226.6221.7221.1217.8210.8203.5213.9216.8227.8217.3217.6209.2211.8212.1204.1201.3199.1205.2203.3189.3219.7273.0280.3269.8268.4257.1252.2253.9245.8239.4248.9238.6229.2218.9
us-gaap:OperatingIncomeLoss ▃▁▂▇▃▁▂▇▃▁▂▆▃▂▂▆▄▁▂▇▃▁▁▇▃▁▂▇▄▂▂▇▄▂▃█▅▃▃█▅▂▂▇▄▂129.548.682.50000000000006258.0125.456.370.3274.3110.049.758.0227.3131.760.579.7243.3143.543.882.2257.3125.937.946.8250.8127.256.485.1248.1141.861.873.3260.9143.975.497.3304.0177.398.396.9299.7182.267.981.4274.2151.586.8
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▄▄▂▄▄▃▂▄▄▅▂▄▄▄▄▅▄▄▄▄▅▄▄▄▄▄▁▄▄▄█▄▄▄▂▄▄▃▂▅▅0.73.5-6.42.20.9-0.9-7.50.71.06.8-10.03.40.70.21.67.60.80.6-0.30.45.30.41.04.40.70.2-14.10.30.30.323.71.41.10.9-10.70.50.6-2.4-6.97.76.4NANANANANA
us-gaap:OtherNonoperatingIncomeExpense ▂▂▂▂▃▃▁▂▂▁▂▄▄▄▇█▆▅▄▄▃▃▃▃▃▃▃▃▃▂▃▃-0.10.9-0.1-0.82.02.1-2.6-1.31.5-4.5-1.16.78.59.320.024.815.611.66.06.35.55.54.75.85.15.44.12.51.8-0.82.32.7NANANANANANANANANANANANANANA
 us-gaap:OtherNonoperatingIncomeExpense us-gaap:StatementBusinessSegments oge:ElectricUtility▂▂▂▁▁▂▁▁▂▂▃▄▄▄▇█▆▅▄▃▃▃▃▃▂▂▂▂▂▁▁▂1.21.71.19999999999999950.60.51.8-0.9-0.11.52.66.910.210.010.620.824.715.612.99.46.07.05.36.16.64.42.92.62.91.20.40.64.1NANANANANANANANANANANANANANA
 us-gaap:OtherNonoperatingIncomeExpense us-gaap:StatementBusinessSegments oge:NaturalGasMidstreamOperations▇▇▆▇██▇▇▇▁▄▇████████████████████-0.2-0.5-2.2-0.70.00.0-0.2-0.6-0.4-7.4-3.7-1.20.00.00.00.00.00.10.10.00.00.00.40.00.00.00.00.00.00.00.00.0NANANANANANANANANANANANANANA
 us-gaap:OtherNonoperatingIncomeExpense us-gaap:StatementBusinessSegments us-gaap:AllOtherSegments▄▅▆▄▇▇▅▆▆▆▃▅▄▄▅▅▅▄▁▅▃▅▃▄▆█▇▅▆▄▇▃-0.5-0.11.1-0.51.71.3-0.10.61.00.7-1.8-0.3-0.6-0.7-0.20.30.0-1.3-3.50.3-1.40.3-1.7-0.70.82.51.5-0.30.6-1.21.7-1.4NANANANANANANANANANANANANANA
 us-gaap:OtherNonoperatingIncomeExpense us-gaap:StatementBusinessSegments us-gaap:IntersegmentElimination▆▇▇▇▇▅▄▅▆▇▁▂▅▆▆▇████████████████-0.6-0.2-0.2-0.2-0.2-1.0-1.4-1.2-0.6-0.4-2.5-2.0-0.9-0.6-0.6-0.20.0-0.10.00.0-0.1-0.1-0.1-0.1-0.10.00.0-0.10.00.00.00.0NANANANANANANANANANANANANANA
us-gaap:ProfitLoss ▆▆▆▇▆▁▆█▆▆▆▇▆▆█▇▆▆▆▇▆▆▆▆▆▆▆▇▆▆▆▇▆▆▆▇▆▆▆▇▆▆▆▇▆▆112.952.754.8177.485.9-491.835.4250.9100.247.154.7205.1110.755.0294.8183.4104.836.057.9183.671.525.229.4111.287.543.258.4187.3100.849.357.6215.293.028.043.5192.4101.647.543.2181.4109.329.733.8163.577.925.2
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▃█▃▄▃▃▃▄▃▃▃▄▃▃▃▁▁▁▃▄▃▃▃▄▃▃▃▄▄▃▃▄▄▅▅▆▅▅▅▆▅▅▅▆▅▅564.51621.0469.60000000000025687.8492.0420.4472.5739.2501.1477.4511.8684.5547.7477.9501.90.00.00.0530.8743.9551.4433.1447.1719.8549.9480.1526.2754.7611.8560.4508.9723.2734.2901.4862.11113.4855.0840.7885.21212.1978.1840.5828.51125.4887.2875.8
us-gaap:Revenues ▂█▁▃▁▁▁▃▁▁▁▃▂▁▁▃▂▁▂▃▂▁▁▃▂▁▂▃▂▂▁▃▃▄▄▅▃▃▄▆▄▃▃▅▄▄577.41630.6485.40000000000026702.1503.5431.3472.5755.4513.7490.0511.8698.8567.0492.7501.9716.8586.4456.0530.8743.9551.4433.1447.1719.8549.9480.1526.2754.7611.8560.4508.9723.2734.2901.4862.11113.4855.0840.7885.21212.1978.1840.5828.51125.4887.2875.8
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Assets ██▆▆▆▆▇▇▆▆▆▆▆▆▆▆▆▅▅▅▅▄▅▅▄▄▄▄▄▄▄▄▃▅▅▅▄▄▃▃▂▂▂▁▁11899.511788.710718.810497.610439.110370.911024.311083.710886.210761.610748.610703.010543.610436.410412.710463.710420.510134.99939.69784.09659.29523.39597.49617.89593.69502.29527.89462.79324.39250.79134.79144.28848.59981.89922.29706.09351.49074.58906.08378.88135.57690.67669.17527.47294.1NA
us-gaap:Liabilities ██▅▅▅▅▅▅▅▅▅▄▄▄▄▅▅▄▄▄▄▃▃▃▄▃▃▃▃▃▃▃▃▅▅▄▄▃▃▂▂▁▁8258.78183.27087.06836.96874.96818.26884.86897.56879.06785.46743.56673.46653.56594.36561.66846.96928.56690.56495.86338.86337.46225.06271.46264.46307.66260.46283.46219.76224.56212.96097.66149.66037.26929.56849.86669.56473.26264.16086.75679.95587.15221.75269.1NANANA
us-gaap:LiabilitiesAndStockholdersEquity ██▆▆▆▅▇▇▆▆▆▆▆▆▆▆▆▅▅▄▄▄▄▄▄▄▄▄▄▄▃▃▃▅▅▄▄▃▃▂▂▁▁11899.511788.710718.810497.610439.110370.911024.311083.710886.210761.610748.610703.010543.610436.410412.710463.710420.510134.99939.69784.09659.29523.39597.49617.89593.69502.29527.89462.79324.39250.79134.79144.28848.59981.89922.29706.09351.49074.58906.08378.88135.57690.67669.1NANANA
us-gaap:StockholdersEquity ▄▄▄▄▃▃██▇▆▇▇▆▅▆▄▃▃▂▃▂▁▂▂▁▁▁▁3640.83605.53631.83660.73564.23552.74139.54186.24007.23976.24005.14029.63890.13842.13851.13616.83492.03444.43443.83445.23321.83298.33326.03353.43286.03241.83244.43243.0NANA3037.12994.62811.32745.52767.22768.62615.02553.12563.32540.92387.82310.62289.6NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AssetsCurrent ▂▂▁▂▂▃▁▃▁▁▃▄▃▂▂▄▄▃▃▃▃▁▃▆▅▅▆▆▅▅▅▆▄▄▇█▆▄▅▆▆▄▄484.6502.7428.5488.5499.0522.5430.2549.1455.6454.1557.3642.0560.8493.5497.0599.8632.5538.1549.5547.1527.2455.9570.2753.1682.0653.3705.8740.0696.7702.5694.6758.0607.0626.5794.2856.5727.8601.4652.7726.5705.2596.4632.1NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue NANA1.132.067.5145.90.013.20.00.094.390.70.02.314.40.00.00.00.30.00.00.075.243.30.01.55.50.02.22.46.80.00.07.11.810.21.71.64.65.65.14.02.38.57.35.7
us-gaap:AccountsReceivableNetCurrent ▂▁▂▃▂▁▂▃▂▂▂▄▃▂▂▄▂▁▂▃▂▁▂▃▂▂▂▄▂▃▂▄▂▅▅█▅▅▆█▆▅▅173.2139.5157.8209.5160.6143.4153.8226.6163.6163.5174.7245.2221.2177.6188.7261.5185.0136.6173.0224.3163.1135.1173.1222.6185.9169.2188.8238.2187.4191.9179.4257.2186.7286.9295.3390.6302.6269.2322.5396.4324.9269.8277.9NANANA
us-gaap:InventoryNet NA39.436.536.542.745.546.343.647.948.357.664.581.195.484.377.277.586.379.887.6107.1105.4113.886.289.482.658.545.458.082.474.475.598.799.793.384.0101.196.3100.791.0122.8139.6158.8NANANA
us-gaap:OtherAssetsCurrent ▄▄▄▂▃▂▂▂▃▃▂▂▃▄▅▅▇██▆▇▆▅▄▄▃▃▄▃▂▃▂▃▃▃▃▄▃▂▁▁▁▂47.143.841.230.735.230.824.423.334.035.229.527.632.645.854.657.476.183.581.868.275.965.455.644.947.236.937.346.035.630.934.630.337.739.735.639.243.937.230.917.621.218.524.7NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 us-gaap:AssetsNoncurrent us-gaap:EquityMethodInvestmentNonconsolidatedInvestee us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees▁▂▂▃█11284.011315.011348.011402.011687.0NA11877.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PropertyPlantAndEquipmentGross ██▇▇▇▇▇▆▆▆▆▆▅▅▅▅▅▄▄▄▃▃▃▃▃▂▂▂▂▂▂▁▁▆▅▅▄▄▃▃▂▂▂13763.713606.013442.213244.113129.413011.912912.712787.312643.512483.312371.212237.612110.612000.111908.711784.211625.211404.111185.110965.410842.110715.810596.810429.310295.210168.410098.910020.19866.69773.29651.69430.69271.112200.411891.911587.911319.411099.010814.910444.010189.39831.19648.0NANANA
us-gaap:ConstructionInProgressGross ▂▂▁▁▁▁▁▁▁▁▃▆▅▅██▇▆▄▃▃▃▂▂▁▁▁▃▂▄▄▄▄▅▃▂▃▄▄█▇▅▄181.0185.6145.5128.9124.0149.5141.6125.2126.8156.6376.4632.9566.0525.7867.5893.9797.8673.3495.1365.8319.4300.1278.5230.6168.8147.5115.9297.5222.3470.3468.5501.1421.4543.6387.5269.4363.1501.6499.0874.7774.8550.7460.0NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment ██▇▇▇▇▆▆▆▅▆▅▅▅▅▅▄▄▄▄▄▃▃▃▃▂▂▂▂▂▁▁▁▅▅▄▄▄▃▃▃▃▃4188.54131.54067.64010.13957.33920.93868.13826.13766.03713.93727.43680.63637.53607.03568.83584.33536.93503.83488.93431.13372.23328.33274.43262.83209.43156.23119.03093.03046.33010.92978.82935.02888.23620.03547.13490.13455.73394.43340.93295.23255.13231.53183.6NANANA
us-gaap:PropertyPlantAndEquipmentNet ███▇▇▇▇▇▆▆▆▆▆▅▅▅▅▄▄▄▃▃▃▃▃▂▂▂▂▂▂▁▁▆▅▅▄▄▃▃▂▁▁9575.29474.59374.69234.09172.19091.09044.68961.28877.58769.48643.88557.08473.18393.18339.98199.98088.37900.37696.27534.37469.97387.57322.47166.57085.87012.26979.96927.16820.36762.36672.86495.66382.98580.48344.88097.87863.77704.67474.07148.86934.26599.66464.4NANANA
us-gaap:OperatingLeaseRightOfUseAsset NANA37.6NANANA40.942.043.144.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OperatingLeaseRightOfUseAsset dei:LegalEntity oge:OgAndENANA37.0NANANA39.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ██▃▃▃▃▃▃▂▂▂▂▂▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▄▄▅▅▅▅▅▅▃▃▁▁1297.71292.3431.6316.1312.3310.0315.3314.3300.4287.2296.6265.7279.1313.0338.7429.5464.8462.1461.7462.6420.9423.0439.7425.5443.3449.6453.8417.1432.3408.6407.5538.6535.5719.0731.0701.2711.1719.3732.6458.1449.235.937.5NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AccountsPayableCurrent ▃▄▄▁▂▂▃▂▂▃▄▂▂▂▄▂▃▄▃▁▂▂▄▁▂▂▂▁▂▃▄▂▃██▅▅▅▇▅▇▅▆189.8244.8251.5123.2144.2157.2194.9159.0151.6194.1239.3171.8161.4181.0230.4145.5188.4244.3205.4129.4159.7172.7262.5125.7145.8151.9179.1143.1174.3209.6251.0171.1219.6409.5396.7280.7274.5304.8388.0297.4372.5294.5321.7NANANA
us-gaap:DividendsPayableCurrent ████████▇▇▇▇▆▆▆▆▅▅▅▅▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁80.680.680.580.577.677.677.677.673.073.072.972.966.466.466.466.460.460.460.460.454.954.954.954.949.949.949.949.844.844.844.741.441.441.441.238.838.738.738.536.836.736.736.6NANANA
us-gaap:LiabilitiesCurrent ▃█▂▁▁▃▂▂▂▃▃▃▅▅▃▃▃▃▄▂▂▂▂▁▂▂▁▃▄▃▄▃▄▆▅▅▅▄▄▃▃▃▃911.31836.5697.4517.4594.6855.2657.9696.6702.7884.2869.4840.91250.31215.2950.5953.5926.2915.01027.2795.3773.5706.5752.8586.8662.3641.6573.3869.11093.9949.31093.8941.51016.61482.21276.41195.91268.81115.3998.5934.2933.9838.5814.5NANANA
us-gaap:OtherLiabilitiesCurrent ▂▂▂▂▂▃▅▆▆▇▇▇▆▃▁▂▅██▅▂▂▃▄▄▄▃▄▄▃▃▄▄▅▅▇▇▅▅▅▅▄▄37.534.333.739.041.448.765.276.077.482.087.082.376.746.928.736.463.495.096.062.838.937.143.953.156.352.951.759.852.947.347.056.460.563.764.588.084.567.464.571.371.761.255.1NANANA
us-gaap:TaxesPayableCurrent ▅▃▅█▅▂▃▆▃▁▄▆▃▂▄▆▃▁▃▅▃▁▄▆▃▁▃▅▃▁▃▅▃▂▄▆▄▁▃▆▃▁▃56.537.755.778.457.534.941.960.740.826.244.062.642.931.444.560.240.125.241.358.739.424.745.961.441.624.039.756.138.126.039.957.240.328.848.165.945.726.242.361.642.323.839.3NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 us-gaap:LiabilitiesNoncurrent us-gaap:EquityMethodInvestmentNonconsolidatedInvestee us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees▁▁▆▆█3249.03249.04052.04055.04454.0NA4077.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LongTermDebt NANA3494.4NANANA3195.2NANANA3146.9NANANA2999.4NANANA2630.5NANANA2755.6NANANA2755.3NANANA2400.1NANANA2848.6NANANA2737.1NANANA2362.9NANANA
 us-gaap:LongTermDebt dei:LegalEntity oge:OgAndENANA3494.4NANANA3195.2NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument oge:OgAndESeniorNotes█▆▆▆▆▅▅▅▅▄▅▅▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▂▃▃▂▂▂▁▁▁▁▁▁▁▁3850.63350.23349.63349.03348.53050.73050.33049.73048.62752.33001.93001.62855.22854.72854.32854.12682.82683.02385.52385.02384.72384.32510.22510.02509.92509.82509.72264.12403.82403.82154.52154.32154.31904.31904.21904.11904.01903.91903.81903.81903.7NA1655.0NANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument oge:OgAndETinkerDebt▁▁▁▂▂▂▂▂▂▂▂▃▃▃▃▃▃▃▄▄▄▄▄▅▅▅▅▅▆▆▆▆▇▇██9.49.49.49.59.59.59.59.69.69.69.69.79.79.79.79.79.89.89.99.99.910.010.010.110.110.210.210.210.310.310.310.410.610.610.710.7NANA0.0NANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument oge:OgeEnergy499.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LongTermDebtNoncurrent █▅▅▅▅▄▄▄▄▃▃▃▂▂▂▂▃▂▁▂▂▂▂▂▂▂▂▂▁▂▁▁▁▃▃▃▂▂▂▂▂▁▁4495.23495.03494.43493.93493.43195.63195.23194.73193.62897.32896.92896.82500.42500.12749.62749.52863.02703.22405.82505.22629.72629.32645.62645.52645.42645.42755.32509.72409.52549.42300.12400.02400.22848.72848.62848.42737.52737.32737.12586.92586.82338.12362.9NANANA
us-gaap:DeferredTaxLiabilitiesNoncurrent ▁▂▂▂▁▁▂▂▂▂▂▂▂▂▂██▇▇▇▇▇▆▇▇▇▇▇▆▆▆▆▅▅▅1206.51287.91268.61229.21165.71129.01375.81362.11325.01319.51310.91291.51255.11232.31227.82465.92379.42332.02334.52314.52232.62188.12178.22333.52298.22279.32268.32219.22130.12119.82125.32105.31916.21817.71948.8NANANA2130.41599.81512.81463.51434.8NANANA
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent ▁▁▃▂▂▂▃▂▃▃▃▁▁▂▂▁▄▄▄▄▅▅▅▅▅▅▅▃▃▃▃▇▇██▆▆▇▇▃▃▄▇179.8182.5231.4194.3214.3217.1225.0205.6224.9227.1225.7172.8188.4190.4192.7185.8275.6276.5274.8280.2300.1298.2299.9311.0310.8313.2315.5247.7244.0242.8241.5367.7366.9399.9399.8336.7334.1365.6360.8241.5249.0285.0372.4NANANA
us-gaap:OtherLiabilitiesNoncurrent ████████▇█▇▇▆▆▆▆▆▆▆▆▄▅▄▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▂▁▁▁▁195.3193.5195.4192.5193.6198.1200.3198.1182.6195.8169.9180.4163.2163.6157.6160.5162.7157.1153.8151.6117.6124.6122.3110.6111.3109.3108.0107.4105.9112.4100.489.789.893.689.587.587.688.161.248.244.746.045.3NANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA5.7NANANA5.86.26.2NA3.9NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo dei:LegalEntity oge:OgAndENANA5.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA5.1NANANA5.25.95.9NA3.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree dei:LegalEntity oge:OgAndENANA5.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA3.2NANANA5.25.25.2NA2.9NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour dei:LegalEntity oge:OgAndENANA3.2NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA3.0NANANA3.15.15.1NA2.9NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive dei:LegalEntity oge:OgAndENANA3.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA31.7NANANA34.737.837.8NA37.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive dei:LegalEntity oge:OgAndENANA31.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquity ▄▄▄▄▃▃██▇▆▇▇▆▅▆▄▃▃▂▃▂▁▂▂▁▁▁▁3640.83605.53631.83660.73564.23552.74139.54186.24007.23976.24005.14029.63890.13842.13851.13616.83492.03444.43443.83445.23321.83298.33326.03353.43286.03241.83244.43243.0NANA3037.12994.62811.32745.52767.22768.62615.02553.12563.32540.92387.82310.62289.6NANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ▆▆▆▆▆▆██▇▇▇▇▇▇▇▆▆▆▆▆▅▅▅▅▅▅▅▅▄▄▄▄▃▄▄▄▄▃▄▃▃▂▂▂▁▁3640.83605.53631.83660.73564.23552.74139.54186.24007.23976.24005.14029.63890.13842.13851.13616.83492.03444.43443.83445.23321.83298.33326.03353.43286.03241.83244.43243.03099.83037.83037.12994.62811.33052.33072.43036.52878.22810.42819.32698.92548.42468.92400.02248.32119.72055.7
us-gaap:CommonStockValue NANA2.0NANANA2.0NANANA2.0NANANA2.0NANANA2.0NANANA2.0NANANA2.0NANANA2.0NANANA1.0NANANA1.0NANANA1.0NANANA
us-gaap:AdditionalPaidInCapitalCommonStock NANA1122.6NANANA1129.3NANANA1125.7NANANA1112.8NANANA1103.8NANANA1099.3NANANA1085.6NANANA1071.6NANANA1046.4NANANA1034.3NANANA968.2NANANA
 us-gaap:AdditionalPaidInCapitalCommonStock dei:LegalEntity oge:OgAndENANA938.6NANANA935.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CommonStocksIncludingAdditionalPaidInCapital ▇▇▇▇▇▇██▇▇█▇▇▇▆▆▆▆▆▅▅▅▅▅▅▄▄▃▃▂▂▂▁1120.91118.61124.61121.51119.11116.81131.31128.31123.41120.51127.71124.01120.11117.11114.81110.51110.31107.91105.81104.41104.51102.91101.31104.21097.41091.51087.61080.71075.31069.61073.61067.81059.7NA1047.4NANANANANANANANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▆▆▆▆▆▅██▇▇▇▇▇▇▇▆▅▅▅▅▅▅▅▅▅▄▄▄▄▄▄▃▃▃▃▃▂▂▂▂▁▁▁2547.92515.62544.62570.22473.32465.03036.13078.32904.92877.82906.32924.52792.32748.02759.52526.62409.62365.22367.32369.82246.72230.12259.82285.32229.12191.52198.22189.62052.11996.11991.71978.71804.91754.11772.41775.11628.41573.21574.81576.81434.91368.71380.6NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▆▆▆▇▆▆▆██▇▆█▇▇▇█▆▆▆▆▆▅▅▅▄▄▄▇▇▆▆▂▂▃▃▄▄▄▄▅▄▃▁-27.9-28.6-32.1-25.7-27.9-28.8-27.9-20.4-21.1-22.1-28.9-18.9-22.3-23.0-23.2-20.3-27.9-28.7-29.3-29.0-29.4-34.7-35.1-36.1-40.5-41.2-41.4-27.3-27.6-27.9-28.2-51.9-53.3-48.3-49.1-41.0-41.5-42.1-40.6-35.5-41.8-46.9-60.2NANANA
us-gaap:TreasuryStockValue NANA5.3NANANANANANANANANANANANANANANANANANANANANANANANANANANA0.00.00.00.03.50.10.10.36.2NANANA0.0NANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue █▁2.3-0.8NA2.42.3-5.1NA4.92.9-7.23.83.93.02.34.40.22.42.11.4-0.11.61.6-2.96.42.30.73.82.02.4-7.42.44.22.6-8.35.62.62.4-13.44.31.42.5-2.42.92.73.21.6
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▇▁▇▇▇▆▇▇▆▆▇█▇▇█▇▆▆▇▇▆▆▇█▇▇▇▇▇▆▇▇▆▆██▇▇█▇▇▆▇▇▇▇172.4-940.2187.50000000000006261.99999999999994159.4103.9263.5289.299.928.9239.4357.5187.2167.0320.8266.3106.491.0217.7260.992.673.4256.3303.3166.2139.6255.1284.7158.623.2272.0271.320.759.2368.1396.5161.2120.3305.2282.2170.276.3195.6245.4225.5116.0
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▇▆▇▇█▇▇▇▇▇▇██▇▇▅▆▇██▇▇██████▇▆▆▆▅▄▅▆▅▁▅▄▇▆▅▇█-197.8-159.0-232.8-139.8-157.4-124.9-142.3-164.7-163.8-153.9-162.9-146.2-129.3-137.6-161.6-170.0-270.4-219.9-179.9-134.8-134.6-171.1-164.2-110.2-117.0-108.7-131.8-130.3-125.6-171.4-217.6-207.6-242.3-289.5-356.0-309.7-231.8-295.1-543.5-319.6-350.7-182.0-260.1-294.4-161.0-130.6
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity oge:OgAndE▁█-195.1-158.4NANA-153.6-127.2NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂█▂▁▁▃▁▁▂▂▁▁▂▂▁▁▃▃▂▁▂▂▂▁▂▂▁▁▂▃▂▂▃▃▂▁▂▃▃▂▃▂▂▂▂▂25.41098.114.4-157.7-80.4166.9-134.4-111.363.930.7-72.9-120.6-60.2-41.5-144.8-96.3164.0128.6-37.5-126.142.022.5-60.2-149.8-50.7-34.9-117.8-156.6-33.2143.8-47.6-63.7214.5235.6-20.5-78.370.7171.8237.337.9181.6107.458.350.2-62.9-37.8
us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease ▄▄▃▃▁█▃▄▄▁▄▆▄▃▄▄▄▄▄▄▄▂▅▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▂0.0-1.1-30.9-35.5-78.4145.9-13.213.20.0-94.33.690.7-2.3-12.114.40.00.0-0.30.30.00.0-75.231.943.3-1.5-4.05.5-2.2-0.2-4.46.80.0-7.15.3-8.48.50.1-3.0-1.00.51.11.7-6.21.21.6-52.4
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:IncreaseDecreaseInAccountsPayable ▂▂█▃▃▂▄▄▂▂▆▄▂▂▅▂▂▄▅▂▃▂▇▃▂▃▅▂▂▂▆▃▂▄▇▄▂▁▆▂▅▂▆▃▅▂-42.4-28.7128.4-17.4-18.4-32.834.614.3-40.8-42.663.811.6-22.0-23.756.2-30.4-23.624.945.5-33.8-12.7-44.188.6-17.0-25.6-15.136.7-39.7-31.4-29.672.2-11.4-20.416.5106.611.1-33.4-59.275.4-34.837.0-43.172.9-18.535.2-30.4
 us-gaap:IncreaseDecreaseInAccountsPayable dei:LegalEntity oge:OgAndE▁█-37.300000000000004-29.1NANA-18.6-27.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncreaseDecreaseInAccountsReceivable ▇▄▂▆▇▄▁▇▆▄▂▅▇▄▂█▆▃▃▇▆▃▃▆▅▄▃▇▄▅▂▇▇▄▁█▆▃▂▇▆▅▃▆▄▆67.9-26.0-66.027.152.0-16.2-95.263.931.7-19.2-76.24.966.3-14.8-65.475.248.4-36.4-51.361.228.0-38.0-49.536.716.7-19.6-49.450.8-4.512.5-77.870.449.8-8.4-95.388.134.9-54.8-70.571.538.98.1-36.123.9-5.229.3
us-gaap:IncreaseDecreaseInInventories ▅▆▆▅▅▅▅▅▅▄▄▄▄▆▆▅▄▆▅▄▅▄▇▅▅▇▆▄▃▅▅▃▆▆▅▄▆▅▆▃▂▆▁▄█▄3.47.06.90.5-3.55.03.8-0.81.9-9.1-12.4-14.8-12.312.27.7-3.0-8.87.7-1.5-19.7-1.0-10.231.0-4.25.823.913.1-11.5-26.04.00.1-25.212.37.70.0-17.36.9-3.37.3-27.6-50.016.1-57.5-16.242.6-14.1
us-gaap:NetCashProvidedByUsedInOperatingActivities ▇▁▇▇▇▆▇▇▆▆▇█▇▇█▇▆▆▇▇▆▆▇█▇▇▇▇▇▆▇▇▆▆██▇▇█▇▇▆▇▇▇▇172.4-940.2187.50000000000006261.99999999999994159.4103.9263.5289.299.928.9239.4357.5187.2167.0320.8266.3106.491.0217.7260.992.673.4256.3303.3166.2139.6255.1284.7158.623.2272.0271.320.759.2368.1396.5161.2120.3305.2282.2170.276.3195.6245.4225.5116.0
us-gaap:NetIncomeLoss █▁112.952.7NA177.485.9-491.8NA250.9100.247.1NA205.1110.755.0NA183.4104.836.057.9183.671.525.229.4111.287.543.258.4187.3100.849.357.6215.291.723.138.5185.593.937.136.4178.7103.024.830.7163.177.324.2
us-gaap:ProfitLoss ▆▆▆▇▆▁▆█▆▆▆▇▆▆█▇▆▆▆▇▆▆▆▆▆▆▆▇▆▆▆▇▆▆▆▇▆▆▆▇▆▆▆▇▆▆112.952.754.8177.485.9-491.835.4250.9100.247.154.7205.1110.755.0294.8183.4104.836.057.9183.671.525.229.4111.287.543.258.4187.3100.849.357.6215.293.028.043.5192.4101.647.543.2181.4109.329.733.8163.577.925.2
us-gaap:ShareBasedCompensation ▇▇▇▇▇▇▇█▇▇▇█▇▇█▆▇▇▇▆▇▇▇▇▇▆▇▇▇▂▇▇▇▂█▇▇▁█▇▇▅▇▇▇▆2.32.53.12.42.32.03.14.92.93.03.73.93.12.74.40.22.42.11.40.01.51.72.11.41.90.52.71.61.6-8.61.41.71.7-8.34.52.32.4-11.84.43.02.7-2.32.52.61.90.4
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▇▆▇▇█▇▇▇▇▇▇██▇▇▅▆▇██▇▇██████▇▆▆▆▅▄▅▆▅▁▅▄▇▆▅▇█-197.8-159.0-232.8-139.8-157.4-124.9-142.3-164.7-163.8-153.9-162.9-146.2-129.3-137.6-161.6-170.0-270.4-219.9-179.9-134.8-134.6-171.1-164.2-110.2-117.0-108.7-131.8-130.3-125.6-171.4-217.6-207.6-242.3-289.5-356.0-309.7-231.8-295.1-543.5-319.6-350.7-182.0-260.1-294.4-161.0-130.6
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity oge:OgAndE▁█-195.1-158.4NANA-153.6-127.2NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsToAcquireProductiveAssets ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇█▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇██▇█████▇▁█▇▇195.1158.4230.8138.9153.6127.2159.0162.0161.6152.9159.8140.0136.4137.4161.3171.7271.2219.9193.4135.6153.4177.7172.8147.3118.9108.8131.9139.8125.8171.8217.7207.9239.9325.1357.8234.3247.4311.1363.1335.5376.8195.0-1464.2306.3171.2135.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂█▂▁▁▃▁▁▂▂▁▁▂▂▁▁▃▃▂▁▂▂▂▁▂▂▁▁▂▃▂▂▃▃▂▁▂▃▃▂▃▂▂▂▂▂25.41098.114.4-157.7-80.4166.9-134.4-111.363.930.7-72.9-120.6-60.2-41.5-144.8-96.3164.0128.6-37.5-126.142.022.5-60.2-149.8-50.7-34.9-117.8-156.6-33.2143.8-47.6-63.7214.5235.6-20.5-78.370.7171.8237.337.9181.6107.458.350.2-62.9-37.8
us-gaap:ProceedsFromIssuanceOfLongTermDebt NANA0.0-0.1NANA0.10.5NANA0.0396.00.00.0-0.2295.8-0.6297.10.00.00.00.00.00.00.00.0342.40.0-0.4246.90.0-0.1247.50.00.0250.0NANA0.00.0NANA0.00.0NANA
us-gaap:RepaymentsOfLongTermDebt NANA0.00.10.00.00.10.00.0250.00.1250.00.00.0100.0125.00.00.10.10.00.0110.10.10.00.10.0100.1140.0NANA-0.10.1NANA0.00.0NANA0.00.00.00.00.00.00.0289.2
us-gaap:PaymentsOfDividendsCommonStock ███▇▇█▇▇▇▇▇▆▆▆▆▅▅▅▅▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁80.581.780.577.677.579.377.573.173.175.572.866.466.466.666.460.460.460.460.454.954.954.954.949.949.949.949.844.844.844.741.541.441.441.238.638.838.638.536.736.836.736.635.335.335.335.1
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:DebtInstrumentInterestRateStatedPercentage NANANA3.25e-063.25e-083.25e-08NA3.3000000000000004e-083.3000000000000004e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA5.25e-08NANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument,us-gaap:LongtermDebtType oge:OgAndE,oge:DueAugust312062,us-gaap:LongTermDebtNANA3.7999999999999996e-06NANANA3.7999999999999996e-08NANANA3.7999999999999996e-08NANANA3.7e-08NANANA3.7e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument,us-gaap:LongtermDebtType oge:OgAndE,oge:SeniorNotesDueMay152041,us-gaap:SeniorNotesNANA5.25e-06NANANA5.25e-08NANANA5.25e-08NANANA5.25e-08NANANA5.25e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument,us-gaap:LongtermDebtType oge:OgAndE,oge:SeriesDueApril12030,us-gaap:SeniorNotesNANA3.25e-06NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument,us-gaap:LongtermDebtType oge:OgAndE,oge:SeriesDueApril152028,us-gaap:SeniorNotesNANA6.5e-06NANANA6.5e-08NANANA6.5e-08NANANA6.5e-08NANANA6.5e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument,us-gaap:LongtermDebtType oge:OgAndE,oge:SeriesDueAugust152028Member,us-gaap:SeniorNotesNANA3.7999999999999996e-06NANANA3.7999999999999996e-08NANANA3.7999999999999996e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument,us-gaap:LongtermDebtType oge:OgAndE,oge:SeriesDueFebruary12038,us-gaap:SeniorNotesNANA6.45e-06NANANA6.45e-08NANANA6.45e-08NANANA6.45e-08NANANA6.45e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument,us-gaap:LongtermDebtType oge:OgAndE,oge:SeriesDueJanuary152036,us-gaap:SeniorNotesNANA5.75e-06NANANA5.7500000000000005e-08NANANA5.7500000000000005e-08NANANA5.7500000000000005e-08NANANA5.7500000000000005e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument,us-gaap:LongtermDebtType oge:OgAndE,oge:SeriesDueJuly152027,us-gaap:SeniorNotesNANA6.650000000000001e-06NANANA6.65e-08NANANA6.65e-08NANANA6.65e-08NANANA6.65e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument,us-gaap:LongtermDebtType oge:OgAndE,oge:SeriesDueJune12040,us-gaap:SeniorNotesNANA5.85e-06NANANA5.85e-08NANANA5.85e-08NANANA5.85e-08NANANA5.85e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument,us-gaap:LongtermDebtType oge:OgAndE,oge:SeriesDueMarch152030,us-gaap:SeniorNotesNANA3.2999999999999997e-06NANANA3.3000000000000004e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument,us-gaap:LongtermDebtType oge:OgAndE,oge:SeriesDueMay12043,us-gaap:SeniorNotesNANA3.9e-06NANANA3.9e-08NANANA3.9e-08NANANA3.9e-08NANANA3.9e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument,us-gaap:LongtermDebtType oge:OgAndE,oge:SeriesDueMay262023,us-gaap:SeniorNotes5.53e-07NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument,us-gaap:LongtermDebtType oge:OgAndE,oge:SeriesdueApril12047,us-gaap:SeniorNotesNANA4.15e-06NANANA4.15e-08NANANA4.15e-08NANANA4.15e-084.15e-084.15e-084.15e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument,us-gaap:LongtermDebtType oge:OgAndE,oge:SeriesdueAugust152047MemberDomain,us-gaap:SeniorNotesNANA3.85e-06NANANA3.85e-08NANANA3.85e-08NANANA3.85e-083.85e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument,us-gaap:LongtermDebtType oge:OgAndE,oge:SeriesdueDecember152044,us-gaap:SeniorNotesNANA4e-06NANANA4e-08NANANA4e-08NANANA4e-08NANANA4e-08NANANANANANANA4e-08NANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument,us-gaap:LongtermDebtType oge:OgAndE,oge:SeriesdueMarch152044,us-gaap:SeniorNotesNANA4.55e-06NANANA4.55e-08NANANA4.55e-08NANANA4.55e-08NANANA4.55e-08NANANANANANANA4.55e-084.55e-084.55e-08NANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument,us-gaap:LongtermDebtType oge:OgeEnergy,oge:SeriesDueMay262023,us-gaap:SeniorNotes7.03e-07NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:Range,us-gaap:DebtInstrument,us-gaap:ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTerms srt:Maximum,oge:GarfieldIndustrialAuthorityBond,us-gaap:DebenturesSubjectToMandatoryRedemption▁▁██▁▁▁▁▁▁▁▁▁2.7e-073.3e-075.35e-065.35e-062.2e-085.3499999999999996e-082.5000000000000002e-082.5000000000000002e-082.5000000000000002e-081.88e-082e-082e-082e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:Range,us-gaap:DebtInstrument,us-gaap:ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTerms srt:Maximum,oge:MuskogeeIndustrialAuthorityBondDue2025,us-gaap:DebenturesSubjectToMandatoryRedemption▂▁██▁▁▁▁▁▁▁▁▁3.3e-072.7e-074.309999999999999e-064.309999999999999e-061.5e-084.31e-082.35e-082.35e-082.35e-081.85e-081.8300000000000002e-081.8300000000000002e-081.8300000000000002e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:Range,us-gaap:DebtInstrument,us-gaap:ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTerms srt:Maximum,oge:MuskogeeIndustrialAuthorityBondDue2027,us-gaap:DebenturesSubjectToMandatoryRedemption▁▁██▁▁▁▁▁▁▁▁▁2.7e-072.7e-075.35e-065.35e-062.2e-085.3499999999999996e-082.48e-082.48e-082.48e-081.8599999999999998e-081.8599999999999998e-081.8599999999999998e-081.8599999999999998e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:Range,us-gaap:DebtInstrument,us-gaap:ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTerms srt:Minimum,oge:GarfieldIndustrialAuthorityBond,us-gaap:DebenturesSubjectToMandatoryRedemption▅▆██▁▁▁▁▁▁▁▁▁1.7000000000000001e-072.3000000000000002e-072.8e-073e-073.5e-091e-081.2e-081.2999999999999999e-081.46e-081.43e-081.01e-081.01e-081.06e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:Range,us-gaap:DebtInstrument,us-gaap:ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTerms srt:Minimum,oge:MuskogeeIndustrialAuthorityBondDue2025,us-gaap:DebenturesSubjectToMandatoryRedemption▄▅██▁▁▁▁▁▁▁▁▁1.6e-072.0000000000000002e-073.3e-073.3e-073.7e-091e-081.19e-081.3400000000000001e-081.43e-081.35e-081.01e-081.01e-081.0500000000000001e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:Range,us-gaap:DebtInstrument,us-gaap:ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTerms srt:Minimum,oge:MuskogeeIndustrialAuthorityBondDue2027,us-gaap:DebenturesSubjectToMandatoryRedemption▅▆██▁▁▁▁▁▁▁▁▁1.7000000000000001e-072.0000000000000002e-072.8e-073e-073.5e-091e-081.2e-081.36e-081.45e-081.36e-081.03e-081.03e-081.06e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value2.02.02.02.02.02.02.02.01.01.01.01.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Shares Authorized

us-gaap:CommonStockSharesAuthorized

us-gaap:CommonStockSharesAuthorized


Common
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312014-03-312013-12-312013-09-302013-06-302012-12-312010-12-312009-12-31
Value4504504504504504504504504504504502250.0001250.000125
Percentage of CommonStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value20020019919919919919919898989.76e-059.7e-05
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents

us-gaap:CommonStock


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value200200200200200200200200200200199199199199199199199199199199199
Percentage of CommonStockSharesOutstanding0.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value2002002002002002002002002002002002001992001991991991991991992002001991991999999989899999.91e-0599989.85e-05
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value2002002002002002002001991991991991991991991991991991991991991991991981981989898989898989.77e-0597979.709999999999999e-05
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.560.260.270.890.43-2.460.181.250.50.240.271.030.550.281.480.920.520.180.290.920.350.130.150.550.440.220.290.940.510.250.291.080.460.230.391.880.950.380.371.821.050.250.321.670.790.25
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.560.260.270.890.43-2.460.181.250.50.240.271.020.550.271.480.920.520.180.290.920.350.130.150.550.440.220.290.940.50.250.291.080.460.230.391.870.950.380.371.81.040.250.311.650.780.25
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense dei:LegalEntity, us-gaap:AwardType

us-gaap:AllocatedShareBasedCompensationExpense

oge:OgAndE, us-gaap:PerformanceShares


Allocated
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.50.40.60.8
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.10.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE us-gaap:PerformanceShares0.00.00.00.0

oge:OgAndE, us-gaap:StockCompensationPlan


Allocated
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.60.40.70.9
Percentage of AllocatedShareBasedCompensationExpense120.0100.0116.7112.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.10.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE us-gaap:StockCompensationPlan0.00.00.00.0

us-gaap:AllocatedShareBasedCompensationExpense dei:LegalEntity, us-gaap:AwardType, us-gaap:PlanName

oge:OgAndE, us-gaap:PerformanceShares, oge:TotalShareholderReturn


Allocated
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.50.40.60.7
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.087.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.10.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE us-gaap:PerformanceShares oge:TotalShareholderReturn0.00.00.00.0

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType

us-gaap:PerformanceShares


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value1.92.02.82.12.11.93.04.62.72.73.63.93.12.74.30.22.42.11.4-0.11.51.72.31.12.52.43.92.12.33.72.43.12.62.64.52.62.62.54.42.72.7
Percentage of AllocatedShareBasedCompensationExpense380.0500.00.00.0350.0237.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.10.00.30.40.50.60.60.50.60.70.60.60.60.90.00.00.00.3-0.00.30.40.50.20.50.50.70.30.40.70.50.40.40.30.50.20.30.30.50.20.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:PerformanceShares0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RestrictedStock


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312011-09-302011-06-30
Value0.40.50.30.30.20.10.10.30.20.30.10.00.00.00.00.10.00.00.00.00.10.00.00.00.10.0-0.10.00.00.10.10.10.10.10.10.10.20.30.20.2
Percentage of AllocatedShareBasedCompensationExpense80.0125.00.00.033.312.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.00.00.00.00.00.00.00.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RestrictedStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockCompensationPlan


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value2.32.53.12.42.32.03.14.92.93.03.73.93.12.74.30.32.42.11.4-0.11.61.72.31.12.62.43.82.12.33.82.53.22.72.74.62.72.82.74.72.92.9
Percentage of AllocatedShareBasedCompensationExpense460.0625.00.00.0383.3250.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.20.00.30.50.50.70.70.60.60.70.60.60.60.90.00.00.00.3-0.00.30.40.50.20.50.50.70.30.40.70.50.40.40.30.50.20.30.30.50.20.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StockCompensationPlan0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType, us-gaap:PlanName

us-gaap:PerformanceShares, oge:PerformanceUnitsRelatedToEarningsPerShare


Allocated
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value0.50.20.10.21.12.30.40.51.51.91.00.71.6-1.40.60.60.3-1.30.40.60.4-0.80.60.51.50.10.41.70.40.60.70.62.20.70.60.71.80.80.8
Percentage of AllocatedShareBasedCompensationExpense0.00.016.725.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.20.30.10.10.30.30.20.10.30.00.00.00.1-0.20.10.10.1-0.10.10.10.30.00.10.30.10.10.10.10.30.10.10.10.20.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:PerformanceShares oge:PerformanceUnitsRelatedToEarningsPerShare0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PerformanceShares, oge:TotalShareholderReturn


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value1.92.02.31.92.01.71.92.32.32.22.12.02.12.02.71.61.81.51.11.21.11.11.91.91.91.92.42.01.92.02.02.51.92.02.31.92.01.82.61.91.9
Percentage of AllocatedShareBasedCompensationExpense380.0500.00.00.0333.3212.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.10.00.30.40.40.40.30.50.50.40.30.40.40.50.00.00.00.20.20.20.30.40.30.30.40.50.30.30.40.40.30.30.20.30.20.20.20.30.20.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:PerformanceShares oge:TotalShareholderReturn0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1135617986-492.7251101532081115519110536184762530115884344187101498121686233018694353118410838391579022
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.13.526.117.6-117.234.020.211.330.520.311.60.00.00.024.713.95.96.816.116.09.08.424.916.58.916.030.011.82.73.516.711.14.23.515.311.14.54.814.010.22.6

us-gaap:ComprehensiveIncomeNetOfTax dei:LegalEntity

oge:OgAndE


Comprehensive
Period End2021-06-302021-03-312020-06-302020-03-31
Value85117819
Percentage of ComprehensiveIncomeNetOfTax74.919.990.9-4.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.10.716.04.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE15.10.716.04.7

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value2001346163209137135161234178212228244208210201255232208234269197177182259210211237305270293232273370553
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax35.483.10.030.427.932.134.231.735.744.544.735.738.144.040.10.00.00.044.236.335.941.140.936.138.444.145.040.544.352.445.637.750.561.3

us-gaap:CostOfGoodsAndServicesSold dei:LegalEntity

oge:OgAndE


Cost
Period End2021-06-302021-03-312020-06-302020-03-31
Value2001346137135
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax35.483.127.932.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE35.483.127.932.1

us-gaap:CostOfGoodsAndServicesSold us-gaap:StatementBusinessSegments

oge:ElectricUtility


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value2001346163209137135161234178212228244208210201255232208234269197177182259210211237305270293232273247213
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.066.838.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax35.483.10.030.427.932.134.231.735.744.544.735.738.144.040.10.00.00.044.236.335.941.140.936.138.444.145.040.544.352.445.637.733.723.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:ElectricUtility0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Cost Of Revenue

us-gaap:CostOfRevenue us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:CostOfRevenue

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value426519312250177226321263317
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax75.532.00.036.336.053.867.935.663.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees0.00.00.00.00.00.00.00.00.0

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1236378233113-726.439271111416823512865962651515676262112354214712256942581437377275126435626013765632611574249238118
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.83.90.033.923.1-172.88.336.822.28.713.434.423.513.619.20.00.00.014.335.320.38.29.520.522.311.717.934.223.513.015.338.117.34.86.523.416.17.87.121.616.15.05.921.213.3

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest dei:LegalEntity

oge:OgAndE


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value94128721
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest76.819.676.9-3.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.70.817.75.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE16.70.817.75.2

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1010235527-234.63.62011-5.813301710-198.382462018794010133635123570422320603315126835182080471215744030
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.80.70.08.15.6-55.80.82.82.2-1.22.74.43.32.1-39.50.00.00.03.410.67.42.42.95.16.42.76.89.47.04.23.98.44.61.71.46.14.22.22.36.64.91.51.96.64.53.5

us-gaap:IncomeTaxExpenseBenefit dei:LegalEntity

oge:OgAndE


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value9.41.28.42.0
Percentage of IncomeTaxExpenseBenefit93.111.330.4-0.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.70.11.70.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE1.70.11.70.5

us-gaap:IncomeTaxExpenseBenefit us-gaap:StatementBusinessSegments

oge:ElectricUtility


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value9.41.24.2208.42.05.29.74.30.97.118113.02571377.31269312.39.963256.31658297.61162
Percentage of IncomeTaxExpenseBenefit93.111.317.636.030.4-0.9144.446.638.4-15.551.162.062.029.7-12.787.080.936.565.987.276.622.576.2172.673.148.845.882.967.932.157.2102.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.70.10.02.91.70.51.11.30.90.21.42.72.00.65.00.00.00.02.39.35.60.52.28.84.71.33.17.84.71.42.38.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:ElectricUtility0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

oge:NaturalGasMidstreamOperations


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-0.6149.24.57.5-179.22.78.58.11.4109.96.79.8-233.81210159.0129.3107.7-26.810.08.119161418100.2
Percentage of IncomeTaxExpenseBenefit-5.9134.938.78.127.276.475.040.972.3-24.177.032.737.497.0117.915.322.777.049.515.322.999.059.2-73.428.662.854.822.934.978.151.70.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.10.90.00.71.5-42.60.61.11.60.32.11.41.22.1-46.60.00.00.01.71.61.72.31.7-3.71.81.73.72.12.43.32.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:NaturalGasMidstreamOperations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllOtherSegments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value1.3-4.9103111-57.4-4.32.6-1.2-8.1-3.91.60.1-2.710-1.9-1.7-2.7-2.8-2.00.2-2.2-4.60.3-0.6-1.5-0.2-4.1-1.2-2.4-1.7-1.6
Percentage of IncomeTaxExpenseBenefit12.9-46.243.755.942.424.5-119.412.5-10.7139.7-28.15.30.6-26.7-5.2-2.3-3.6-13.5-15.4-2.50.5-21.6-35.40.8-1.7-11.6-0.6-5.8-2.8-10.1-8.5-2.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.2-0.30.04.52.4-13.7-0.90.4-0.2-1.7-0.80.20.0-0.62.10.00.00.0-0.5-0.30.0-0.5-1.00.0-0.1-0.3-0.0-0.5-0.2-0.4-0.3-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value39393939403837393534373840383535373534353636363738373537393535333741424140403635343435363434
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.12.40.05.88.39.18.05.47.27.27.45.77.58.17.10.00.00.06.54.86.58.48.25.16.97.86.84.96.46.46.94.75.14.64.93.74.74.84.22.93.54.14.23.23.83.9

us-gaap:InterestExpense dei:LegalEntity

oge:OgAndE


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value37383936
Percentage of InterestExpense95.097.596.396.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.72.48.08.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE6.72.48.08.8

us-gaap:InterestExpense us-gaap:StatementBusinessSegments

oge:ElectricUtility


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value3738393939363638333237373937343435333334353536363736343537333331
Percentage of InterestExpense95.097.598.799.296.396.397.496.092.893.699.297.795.896.696.996.196.096.096.896.997.297.898.998.498.298.496.994.995.294.494.393.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.72.40.05.78.08.87.85.16.66.87.35.57.27.86.90.00.00.06.34.66.38.28.15.16.87.76.64.76.16.06.54.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:ElectricUtility0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllOtherSegments


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value2.61.20.70.51.72.42.42.83.22.62.82.92.61.91.71.61.51.51.11.11.10.90.50.70.80.61.12.01.92.02.02.1
Percentage of InterestExpense6.53.01.81.34.26.36.37.18.97.57.47.56.44.94.74.54.04.33.23.13.12.51.41.92.11.63.15.44.85.65.76.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.10.00.10.30.60.50.40.60.50.50.40.50.40.30.00.00.00.20.10.20.20.10.10.10.10.20.30.30.40.40.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IntersegmentElimination


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-0.6-0.2-0.2-0.2-0.2-1.0-1.4-1.2-0.6-0.4-2.5-2.0-0.9-0.6-0.6-0.20.0-0.10.00.0-0.1-0.1-0.1-0.1-0.10.00.0-0.10.00.00.00.0
Percentage of InterestExpense-1.5-0.5-0.5-0.5-0.5-2.6-3.7-3.0-1.7-1.2-6.6-5.2-2.2-1.6-1.7-0.60.0-0.30.00.0-0.3-0.3-0.3-0.3-0.30.00.0-0.30.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.00.0-0.0-0.0-0.2-0.3-0.2-0.1-0.1-0.5-0.3-0.2-0.1-0.10.00.00.00.00.0-0.0-0.0-0.0-0.0-0.00.00.0-0.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Expense Long Term Debt

us-gaap:InterestExpenseLongTermDebt

us-gaap:InterestExpenseLongTermDebt


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value37383838383636373132374039393938393535353535363737363536373534353639404038393737353536363333
Percentage of InterestExpenseLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.72.40.05.67.98.77.75.16.36.87.45.97.28.37.90.00.00.06.84.86.58.38.35.16.77.76.74.86.26.36.94.84.94.44.73.64.54.74.23.13.74.24.33.23.83.8

us-gaap:InterestExpenseLongTermDebt dei:LegalEntity

oge:OgAndE


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value37383836
Percentage of InterestExpenseLongTermDebt98.9100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.62.47.98.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE6.62.47.98.7

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1125217785-491.825010047205110551831043657183712529111874358187100495721591233818593373617810324301637724
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.03.325.817.5-117.033.920.09.930.020.211.50.00.00.010.924.713.05.86.615.415.99.011.124.816.58.811.329.812.52.64.516.711.04.44.114.710.53.03.714.58.72.8

us-gaap:NetIncomeLoss dei:LegalEntity

oge:OgAndE


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value85117819
Percentage of NetIncomeLoss75.421.391.9-4.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.10.716.04.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE15.10.716.04.7

us-gaap:NetIncomeLoss dei:LegalEntity, us-gaap:StatementEquityComponents

oge:OgAndE, us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value85117819
Percentage of NetIncomeLoss75.421.391.9-4.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.10.716.04.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE us-gaap:RetainedEarnings0.00.00.00.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3354351528-744.46.537372648463743525845472840223332-66.13337444741473948209.40.7-1.70.67.73.1-2.59.48.53.00.50.73.0
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.93.30.02.25.9-177.11.45.07.45.59.56.86.99.010.50.00.00.05.35.54.07.87.2-9.26.17.78.56.36.78.47.86.72.81.00.1-0.20.10.90.4-0.21.01.00.40.00.10.3

us-gaap:NonoperatingIncomeExpense dei:LegalEntity

oge:OgAndE


Nonoperating
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.21.70.51.8
Percentage of NonoperatingIncomeExpense3.63.11.7-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.10.10.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE0.20.10.10.4

Operating Expenses

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value247235239235240240240247225227224227226221221217210203213216227217217209211212204201199205203189219273280269268257252253245239248238229218
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax43.914.50.034.248.957.150.933.444.947.743.933.241.446.444.10.00.00.040.329.141.350.248.729.138.544.238.826.732.536.639.926.229.930.332.524.231.430.628.520.925.128.530.021.225.825.0

us-gaap:OperatingExpenses dei:LegalEntity

oge:OgAndE


Operating
Period End2021-06-302021-03-312020-06-302020-03-31
Value246234240239
Percentage of OperatingExpenses99.399.899.799.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax43.614.548.856.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE43.614.548.856.9

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1294882258125567027411049582271316079243143438225712537462501275685248141617326014375973041779896299182678127415186
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.93.00.037.525.513.414.937.122.010.411.333.224.012.715.90.00.00.015.534.622.88.810.534.823.111.716.232.923.211.014.436.119.68.411.327.320.711.710.924.718.68.19.824.417.19.9

us-gaap:OperatingIncomeLoss dei:LegalEntity

oge:OgAndE


Operating
Period End2021-06-302021-03-312020-06-302020-03-31
Value1314912657
Percentage of OperatingIncomeLoss101.3101.0100.6101.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.23.025.613.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE23.23.025.613.6

us-gaap:OperatingIncomeLoss us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Operating
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value12420610080146175167
Percentage of OperatingIncomeLoss95.8423.938.863.8259.363.8151.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.012.714.516.334.723.733.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees0.00.00.00.00.00.00.0

us-gaap:OperatingIncomeLoss us-gaap:StatementBusinessSegments

oge:ElectricUtility


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value13149832581265771275110505823013261802431434481257131385925512757852481426173261138526325812739542581332637231113
Percentage of OperatingIncomeLoss101.3101.0100.8100.2100.6101.2102.1100.3100.5101.2100.9101.3100.5100.8101.199.9100.3100.999.4100.0104.4101.8128.0102.0100.2101.6100.6100.1100.3100.0100.0100.096.070.265.684.972.140.556.086.373.238.346.484.274.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.23.00.037.625.613.615.237.222.110.511.433.624.212.816.10.00.00.015.434.623.88.913.435.523.211.916.332.923.211.014.436.118.85.97.423.214.94.76.121.313.63.14.620.512.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:ElectricUtility0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

oge:NaturalGasMidstreamOperations


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-1.7-0.5-0.5-0.5-0.4-0.7-1.5-0.7-0.4-0.6-0.4-0.6-0.5-0.5-0.80.3-0.5-0.30.20.1-7.8-0.2-1.6-4.9-0.2-0.8-0.5-0.3-0.40.00.00.09.024334548
Percentage of OperatingIncomeLoss-1.3-1.0-0.6-0.2-0.3-1.2-2.1-0.3-0.4-1.2-0.7-0.3-0.4-0.8-1.00.1-0.3-0.70.20.0-6.2-0.5-3.4-2.0-0.2-1.4-0.6-0.1-0.30.00.00.06.332.234.114.927.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3-0.00.0-0.1-0.1-0.2-0.3-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.20.00.00.00.00.0-1.4-0.0-0.4-0.7-0.0-0.2-0.1-0.0-0.10.00.00.01.22.73.94.15.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:NaturalGasMidstreamOperations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllOtherSegments


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-0.20.0-0.30.00.00.0-0.20.0-0.1-2.4-0.10.0-0.10.00.1-0.10.30.02.3-0.5-11.50.0-0.1-0.10.00.00.00.00.0-0.1-3.4-2.60.00.00.00.0-0.10.00.1-0.2-0.9-0.40.0
Percentage of OperatingIncomeLoss-0.20.0-0.20.00.00.0-0.20.0-0.2-1.1-0.10.0-0.10.00.1-0.20.40.01.8-1.3-24.60.0-0.1-0.20.00.00.00.00.0-0.0-2.4-3.40.00.00.00.0-0.10.00.1-0.3-1.1-0.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.10.00.00.0-0.00.0-0.0-0.4-0.00.0-0.00.00.00.00.10.00.4-0.1-2.60.0-0.0-0.00.00.00.00.00.0-0.0-0.5-0.30.00.00.00.0-0.00.00.0-0.0-0.1-0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value0.73.5-6.42.20.9-0.9-7.50.71.06.8-10.03.40.70.21.67.60.80.6-0.30.45.30.41.04.40.70.2-14.10.30.30.3231.41.10.9-10.70.50.6-2.4-6.97.76.4
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.00.30.2-0.2-1.60.10.21.4-2.00.50.10.00.30.00.00.0-0.10.11.00.10.20.60.10.0-2.70.00.00.14.70.20.10.1-1.20.00.1-0.3-0.80.60.7

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value0.73.52.20.9-0.90.71.06.8-10.03.40.70.21.67.60.80.6-0.30.45.30.41.04.40.70.2-14.10.30.30.3231.41.10.8-8.10.50.6-1.5-5.16.3
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.088.975.7100.0100.062.573.981.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.30.2-0.20.10.21.4-2.00.50.10.00.30.00.00.0-0.10.11.00.10.20.60.10.0-2.70.00.00.14.70.20.10.1-0.90.00.1-0.2-0.60.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-0.10.9-0.1-0.82.02.1-2.6-1.31.5-4.5-1.16.78.59.3202415116.06.35.55.54.75.85.15.44.12.51.8-0.82.32.7
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.00.10.0-0.10.40.5-0.6-0.20.3-0.9-0.21.01.61.94.00.00.00.01.10.81.01.31.10.80.91.10.80.30.3-0.10.50.4

us-gaap:OtherNonoperatingIncomeExpense us-gaap:StatementBusinessSegments

oge:ElectricUtility


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value1.21.71.19999999999999950.60.51.8-0.9-0.11.52.66.91010.010202415129.46.07.05.36.16.64.42.92.62.91.20.40.64.1
Percentage of OtherNonoperatingIncomeExpense-1200.0188.9-1200.0-75.025.085.734.67.7100.0-57.8-627.3152.2117.6114.0104.099.6100.0111.2156.795.2127.396.4129.8113.886.353.763.4116.066.7-50.026.1151.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.10.00.10.10.4-0.2-0.00.30.51.31.51.82.24.10.00.00.01.80.81.31.21.40.90.80.60.50.40.20.10.10.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:ElectricUtility0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

oge:NaturalGasMidstreamOperations


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-0.2-0.5-2.2-0.70.00.0-0.2-0.6-0.4-7.4-3.7-1.20.00.00.00.00.00.10.10.00.00.00.40.00.00.00.00.00.00.00.00.0
Percentage of OtherNonoperatingIncomeExpense200.0-55.62200.087.50.00.07.746.2-26.7164.4336.4-17.90.00.00.00.00.00.91.70.00.00.08.50.00.00.00.00.00.0-0.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.00.0-0.10.00.0-0.0-0.1-0.1-1.6-0.7-0.20.00.00.00.00.00.00.00.00.00.00.10.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:NaturalGasMidstreamOperations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllOtherSegments


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-0.5-0.11.1-0.51.71.3-0.10.61.00.7-1.8-0.3-0.6-0.7-0.20.30.0-1.3-3.50.3-1.40.3-1.7-0.70.82.51.5-0.30.6-1.21.7-1.4
Percentage of OtherNonoperatingIncomeExpense500.0-11.1-1100.062.585.061.93.8-46.266.7-15.6163.6-4.5-7.1-7.5-1.01.20.0-11.2-58.34.8-25.55.5-36.2-12.115.746.336.6-12.033.3150.073.9-51.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.00.0-0.10.30.3-0.00.10.20.1-0.4-0.0-0.1-0.1-0.00.00.00.0-0.70.0-0.30.1-0.4-0.10.10.50.3-0.00.1-0.20.3-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IntersegmentElimination


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-0.6-0.2-0.2-0.2-0.2-1.0-1.4-1.2-0.6-0.4-2.5-2.0-0.9-0.6-0.6-0.20.0-0.10.00.0-0.1-0.1-0.1-0.1-0.10.00.0-0.10.00.00.00.0
Percentage of OtherNonoperatingIncomeExpense600.0-22.2200.025.0-10.0-47.653.892.3-40.08.9227.3-29.9-10.6-6.5-3.0-0.80.0-0.90.00.0-1.8-1.8-2.1-1.7-2.00.00.0-4.00.0-0.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.00.0-0.0-0.0-0.2-0.3-0.2-0.1-0.1-0.5-0.3-0.2-0.1-0.10.00.00.00.00.0-0.0-0.0-0.0-0.0-0.00.00.0-0.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value112525417785-491.83525010047542051105529418310436571837125291118743581871004957215932843192101474318110929331637725
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.03.30.025.817.5-117.07.533.920.09.910.730.020.211.558.70.00.00.010.924.713.05.86.615.415.99.011.124.816.58.811.329.812.73.15.017.311.95.74.915.011.23.54.114.58.82.9

us-gaap:ProfitLoss us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value7915587-173.0351039.0123115
Percentage of ProfitLoss70.0294.1158.8-97.540.7-20.925.449.0114.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.09.60.0-25.27.124.51.916.622.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees0.00.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementBusinessSegments

oge:ElectricUtility


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value851141199781928227741920183923141161861645159726.119162691737157762029171
Percentage of ProfitLoss75.421.375.0112.591.9-4.081.690.674.441.638.089.783.156.914.188.182.345.079.187.1101.124.267.7146.578.939.663.584.076.342.050.579.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.10.70.029.016.04.76.130.714.94.14.126.916.86.58.30.00.00.08.621.513.11.44.522.612.53.67.120.812.63.75.723.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:ElectricUtility0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

oge:NaturalGasMidstreamOperations


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value3237231019-568.04.7282621342822232652118201322-0.41818-50.01822202824292745
Percentage of ProfitLoss28.571.943.65.722.1115.513.311.426.845.263.413.820.042.990.111.617.555.623.512.3-0.671.463.3-45.020.652.835.415.123.859.646.921.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.72.30.01.53.9-135.11.03.95.44.56.84.14.04.952.90.00.00.02.63.0-0.14.24.2-6.93.34.73.93.73.95.25.36.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:NaturalGasMidstreamOperations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllOtherSegments


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-4.43.6-10.2-32.2-12.0561.8-4.8-1.26.2-0.8-7.2-3.40.1-12.40.60.3-0.2-1.51.2-0.41.1-9.1-1.70.53.30.61.8-0.1-0.81.4-2.0
Percentage of ProfitLoss-3.96.8-18.6-18.2-14.0-11.45.1-1.9-1.213.2-1.5-3.5-3.10.2-4.20.30.3-0.6-2.60.7-0.64.4-31.0-1.50.67.61.01.0-0.1-1.62.4-0.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.80.20.0-4.7-2.413.40.4-0.6-0.21.3-0.2-1.1-0.60.0-2.50.00.00.0-0.30.2-0.10.3-2.0-0.20.10.70.10.2-0.0-0.10.3-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value112525417785-491.8352501004754205110552941831043657183712529111874358187100495721591233818593373617810324301637724
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.098.682.588.596.492.478.184.398.594.283.590.899.899.296.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.03.30.025.817.5-117.07.533.920.09.910.730.020.211.558.70.00.00.010.924.713.05.86.615.415.99.011.124.816.58.811.329.812.52.64.516.711.04.44.114.710.53.03.714.58.72.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value56416214696874924204727395014775116845474775010.00.00.0530743551433447719549480526754611560508723734901862111385584088512129788408281125887875
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax dei:LegalEntity

oge:OgAndE


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value5641621492420
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax oge:NonRetailRevenues

oge:IntegratedMarket


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value12830215188.57.28.612106.710.016138.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.718.63.42.61.71.71.81.72.11.42.02.52.41.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.718.63.42.61.71.71.81.72.11.42.02.52.41.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:IntegratedMarket100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oge:OtherContractswithCustomers


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value9.5-23.77.8105.27.06.19.17.66.36.1104.75.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.7-1.51.71.61.11.71.31.21.51.31.21.60.91.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.7-1.51.71.61.11.71.31.21.51.31.21.60.91.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OtherContractswithCustomers100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oge:ProvisionforRateRefund


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.64.8-1.0-0.62.0-2.3-0.5-0.10.213-16.5-3.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.7-0.2-0.10.4-0.3-0.1-0.00.02.0-3.0-0.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.7-0.2-0.10.4-0.3-0.1-0.00.02.0-3.0-0.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:ProvisionforRateRefund100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oge:Transmission


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3636343539343536393638334035
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.52.27.35.18.18.17.55.07.97.67.54.97.37.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.52.27.35.18.18.17.55.07.97.67.54.97.37.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:Transmission100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers

oge:Commercial


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10830710415611391102172115115133174152117
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.219.022.322.823.021.721.823.423.024.126.025.527.824.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.219.022.322.823.021.721.823.423.024.126.025.527.824.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:Commercial100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oge:Industrial


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value37146475944414566524345564741
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.69.010.08.69.19.99.79.010.69.08.98.28.78.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.69.010.08.69.19.99.79.010.69.08.98.28.78.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:Industrial100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oge:Oilfield


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value28160425038384358483839393733
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.19.98.97.47.89.19.27.99.88.17.75.86.97.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.19.98.97.47.89.19.27.99.88.17.75.86.97.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:Oilfield100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oge:PublicAuthority


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value37123395740344065444045585141
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.67.68.38.48.38.38.58.98.98.49.08.69.38.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.67.68.38.48.38.38.58.98.98.49.08.69.38.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:PublicAuthority100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oge:Residential


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value178568178294202166173318182191183281217196
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax31.635.137.942.941.239.736.743.136.440.135.841.139.741.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax31.635.137.942.941.239.736.743.136.440.135.841.139.741.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:Residential100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oge:TotalRetailCustomer


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3901306411619439372405682443428447610506431
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax69.180.687.590.089.388.685.992.488.689.787.489.192.490.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax69.180.687.590.089.388.685.992.488.689.787.489.192.490.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:TotalRetailCustomer100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5771630485702503431472755513490511698567492501716586456530743551433447719549480526754611560508723734901862111385584088512129788408281125887875
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax102.3100.6103.4102.1102.3102.6100.0102.2102.5102.6100.0102.1103.5103.1100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues dei:LegalEntity

oge:OgAndE


Revenuesdei:
Period End2021-06-302021-03-312020-06-302020-03-31
Value5771630503431
Percentage of Revenues100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax102.3100.6102.3102.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE102.3100.6102.3102.6

us-gaap:Revenues us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value787970704596515648731699735
Percentage of Revenues136.359.5145.084.9102.3150.2154.792.5143.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax139.459.8149.986.7104.7154.1154.794.6146.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees0.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:StatementBusinessSegments

oge:ElectricUtility


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value5771630485702503431472755513490511698567492501716586456530743551433447719549480526754611560508723574455465721528426445774568422430723512
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.078.350.554.064.861.850.850.463.958.150.251.964.257.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax102.3100.6103.4102.1102.3102.6100.0102.2102.5102.6100.0102.1103.5103.1100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.078.350.554.064.861.850.850.463.958.150.251.964.257.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:ElectricUtility0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value1189911788107181049710439103701102411083108861076110748107031054310436104121046310420101349939978496599523959796179593950295279462932492509134914488489981992297069351907489068378813576907669752772947266
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets dei:LegalEntity

oge:OgAndE


Assetsdei:
Period End2021-06-302021-03-312020-12-312019-12-31
Value11459112481048910076
Percentage of Assets96.395.497.991.4
Percentage of Assets96.395.497.991.4
Percentage of Assets oge:OgAndE100.0100.0100.0100.0

us-gaap:Assets us-gaap:StatementBusinessSegments

oge:ElectricUtility


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value114591124810489103231036710030100761001997339478970496529447930392559230919989508669851183808288854185708332823482668003790878267694770474537138722270826833663266206451629058265898588257755478
Percentage of Assets96.395.497.998.399.396.791.490.489.488.190.390.289.689.188.988.288.388.387.287.086.887.089.089.186.986.786.884.684.884.684.284.384.271.572.873.073.173.174.377.077.375.876.978.279.275.4
Percentage of Assets96.395.497.998.399.396.791.490.489.488.190.390.289.689.188.988.288.388.387.287.086.887.089.089.186.986.786.884.684.884.684.284.384.271.572.873.073.173.174.377.077.375.876.978.279.275.4
Percentage of Assets oge:ElectricUtility100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oge:NaturalGasMidstreamOperations


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value42741537835836035311351161116011731169115311471159115515031513152115211503148114671439154114861476146114271371136713481311126627292681256223952289
Percentage of Assets3.63.53.53.43.53.410.310.510.710.910.910.810.911.111.114.414.515.015.315.415.315.415.016.015.515.515.315.114.714.814.814.314.327.327.026.425.625.7
Percentage of Assets3.63.53.53.43.53.410.310.510.710.910.910.810.911.111.114.414.515.015.315.415.315.415.016.015.515.515.315.114.714.814.814.314.327.327.026.425.625.7
Percentage of Assets oge:NaturalGasMidstreamOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllOtherSegments


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value1275211161091092521071081042001841849598109878991899394981751341221231292041411272161721893872723003312571663149293712813528342691137
Percentage of Assets1.14.41.11.01.02.41.01.01.01.91.71.70.90.91.00.80.90.90.91.01.01.01.81.41.31.31.42.21.51.42.41.92.13.92.73.13.52.81.937.636.11.71.837.736.91.9
Percentage of Assets1.14.41.11.01.02.41.01.01.01.91.71.70.90.91.00.80.90.90.91.01.01.01.81.41.31.31.42.21.51.42.41.92.13.92.73.13.52.81.937.636.11.71.837.736.91.9
Percentage of Assets us-gaap:AllOtherSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value-115.0-396.5-264.7-294.0-397.8-266.1-294.7-205.8-112.1-90.4-310.5-286.9-147.7-124.2-107.3-358.2-381.6-428.3-340.4-323.9-297.7-331.8-559.0-628.4-348.0-332.4-328.8-171.7-96.5-71.4-125.0-43.3-61.3-1945.7-1772.2-1613.1-1535.5-1363.4-1245.3-4953.7-4576.5-712.2-678.8-3906.2-3771.0-499.5
Percentage of Assets-1.0-3.4-2.5-2.8-3.8-2.6-2.7-1.9-1.0-0.8-2.9-2.7-1.4-1.2-1.0-3.4-3.7-4.2-3.4-3.3-3.1-3.5-5.8-6.5-3.6-3.5-3.5-1.8-1.0-0.8-1.4-0.5-0.7-19.5-17.9-16.6-16.4-15.0-14.0-59.1-56.3-9.3-8.9-51.9-51.7-6.9
Percentage of Assets-1.0-3.4-2.5-2.8-3.8-2.6-2.7-1.9-1.0-0.8-2.9-2.7-1.4-1.2-1.0-3.4-3.7-4.2-3.4-3.3-3.1-3.5-5.8-6.5-3.6-3.5-3.5-1.8-1.0-0.8-1.4-0.5-0.7-19.5-17.9-16.6-16.4-15.0-14.0-59.1-56.3-9.3-8.9-51.9-51.7-6.9
Percentage of Assets us-gaap:IntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value82588183708768366874681868846897687967856743667366536594656168466928669064956338633762256271626463076260628362196224621260976149603769296849666964736264608656795587522152695205
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets69.469.466.165.165.965.762.562.263.263.162.762.463.163.263.065.466.566.065.464.865.665.465.365.165.765.965.965.766.867.266.867.368.269.469.068.769.269.068.367.868.767.968.771.6

us-gaap:Liabilities dei:LegalEntity

oge:OgAndE


Liabilitiesdei:
Period End2021-06-302021-03-312020-12-312019-12-31
Value6901673065136118
Percentage of Liabilities83.682.391.988.9
Percentage of Assets58.057.160.855.5
Percentage of Assets oge:OgAndE60.259.862.160.7

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value11899117881071810497104391037011024110831088610761107481070310543104361041210463104201013499399784965995239597961795939502952794629324925091349144884899819922970693519074890683788135769076697266
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity dei:LegalEntity

oge:OgAndE


Liabilities
Period End2021-06-302021-03-312020-12-312019-12-31
Value11459112481048910076
Percentage of LiabilitiesAndStockholdersEquity96.395.497.991.4
Percentage of Assets96.395.497.991.4
Percentage of Assets oge:OgAndE100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value364036053631366035643552413941864007397640054029389038423851361634923444344334453321329833263353328632413244324330372994281127452767276826152553256325402387231022892040
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets30.630.633.934.934.134.337.537.836.836.937.337.636.936.837.034.633.534.034.635.234.434.634.734.934.334.134.134.333.232.731.827.527.928.528.028.128.830.329.430.029.928.1

us-gaap:StockholdersEquity dei:LegalEntity

oge:OgAndE


Stockholders
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312018-12-312017-12-31
Value45584517397539833979395836033455
Percentage of StockholdersEquity125.2125.3109.5111.8112.095.690.089.7
Percentage of Assets38.338.337.138.238.435.933.533.2
Percentage of Assets oge:OgAndE39.840.237.90.00.039.30.00.0

us-gaap:StockholdersEquity dei:LegalEntity, us-gaap:StatementEquityComponents

oge:OgAndE, us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312018-12-312017-12-31
Value14691469938937936935930926
Percentage of StockholdersEquity40.440.725.826.326.422.623.224.1
Percentage of Assets12.412.58.89.09.08.58.78.9
Percentage of Assets oge:OgAndE us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.0

oge:OgAndE, us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312018-12-312017-12-31
Value29872947293629452941292125712428
Percentage of StockholdersEquity82.181.780.882.682.870.664.263.1
Percentage of Assets25.125.027.428.228.426.523.923.3
Percentage of Assets oge:OgAndE us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value484502428488499522430549455454557642560493497599632538549547527455570753682653705740696702694758607626794856727601652726705596632826
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.14.34.04.74.85.03.95.04.24.25.26.05.34.74.85.76.15.35.55.65.54.85.97.87.16.97.47.87.57.67.68.36.96.38.08.87.86.67.38.78.77.88.211.4

us-gaap:AssetsCurrent dei:LegalEntity

oge:OgAndE


Assets
Period End2021-06-302021-03-312020-12-312019-12-31
Value589485685719
Percentage of AssetsCurrent121.796.6160.0167.2
Percentage of Assets5.04.16.46.5
Percentage of Assets oge:OgAndE5.14.36.57.1

us-gaap:AssetsCurrent us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value475449381373374389
Percentage of AssetsCurrent98.089.388.976.474.990.4
Percentage of Assets4.03.83.63.63.63.5
Percentage of Assets us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees0.00.00.00.00.00.0

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1.132671450.0130.00.094900.02.3140.00.00.00.30.00.00.075430.01.55.50.02.22.46.80.00.07.11.8101.71.64.65.65.14.02.38.57.35.7581748.8
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.00.0100.00.00.0100.0100.00.0100.0100.00.00.00.0100.00.00.00.0100.0100.00.0100.0100.00.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.30.61.40.00.10.00.00.90.80.00.00.10.00.00.00.00.00.00.00.80.50.00.00.10.00.00.00.10.00.00.10.00.10.00.00.10.10.10.10.00.10.10.00.80.00.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value173139157209160143153226163163174245221177188261185136173224163135173222185169188238187191179257186286295390302269322396324269277291
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.21.52.01.51.41.42.01.51.51.62.32.11.71.82.51.81.31.72.31.71.41.82.31.91.82.02.52.02.12.02.82.12.93.04.03.23.03.64.74.03.53.64.0

us-gaap:AccountsReceivableNetCurrent dei:LegalEntity

oge:OgAndE


Accounts
Period End2021-06-302021-03-312020-12-312019-12-31
Value173136156153
Percentage of AccountsReceivableNetCurrent100.097.899.0100.0
Percentage of Assets1.51.21.51.4
Percentage of Assets oge:OgAndE1.51.21.51.5

Inventory Net

us-gaap:InventoryNet

us-gaap:InventoryNet


Inventory
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value39363642454643474857648195847777867987107105113868982584558827475989993841019610091122139158118
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.40.40.40.40.40.40.50.60.80.90.80.70.70.90.80.91.11.11.20.90.90.90.60.50.60.90.80.81.11.00.90.91.11.11.11.11.51.82.11.6

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value4743413035302423343529273245545776838168756555444736374635303430373935394337301721182419
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.40.30.30.30.20.20.30.30.30.30.30.40.50.50.70.80.80.70.80.70.60.50.50.40.40.50.40.30.40.30.40.40.40.40.50.40.30.20.30.20.30.3

us-gaap:OtherAssetsCurrent dei:LegalEntity

oge:OgAndE


Other
Period End2021-06-302021-03-312020-12-312019-12-31
Value38363619
Percentage of OtherAssetsCurrent81.382.989.680.3
Percentage of Assets0.30.30.30.2
Percentage of Assets oge:OgAndE0.30.30.40.2

Assets Noncurrent

us-gaap:AssetsNoncurrent us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:AssetsNoncurrent

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value112841131511348114021168711877
Percentage of AssetsNoncurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets94.896.0105.9108.6112.0107.7
Percentage of Assets us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees0.00.00.00.00.00.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value13763136061344213244131291301112912127871264312483123711223712110120001190811784116251140411185109651084210715105961042910295101681009810020986697739651943092711220011891115871131911099108141044410189983196488953
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets115.7115.4125.4126.2125.8125.5117.1115.4116.1116.0115.1114.3114.9115.0114.4112.6111.6112.5112.5112.1112.2112.5110.4108.4107.3107.0106.0105.9105.8105.6105.7103.1104.8122.2119.9119.4121.0122.3121.4124.6125.2127.8125.8123.2

us-gaap:PropertyPlantAndEquipmentGross dei:LegalEntity

oge:OgAndE


Property
Period End2021-06-302021-03-312020-12-312019-12-312011-12-312010-12-31
Value1375713599134361290681437371
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.075.376.4
Percentage of Assets115.6115.4125.4117.191.496.1
Percentage of Assets oge:OgAndE120.1120.9128.1128.10.00.0

oge:OgeEnergy


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value6.16.16.16.1117139151152142124111
Percentage of PropertyPlantAndEquipmentGross0.00.00.00.11.11.31.51.61.21.21.2
Percentage of Assets0.10.10.10.11.21.41.61.71.41.41.4
Percentage of Assets oge:OgeEnergy0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PropertyPlantAndEquipmentGross dei:LegalEntity, us-gaap:PropertyPlantAndEquipmentByType

oge:OgAndE, oge:FiniteLivedIntangibleAssetsMajorClassName


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value254225187181858167505043
Percentage of PropertyPlantAndEquipmentGross1.91.71.51.50.80.80.70.50.40.4
Percentage of Assets2.42.01.71.70.90.80.70.60.50.5
Percentage of Assets oge:OgAndE oge:FiniteLivedIntangibleAssetsMajorClassName0.00.00.00.00.00.00.00.00.00.0

oge:OgAndE, oge:TotalPropertyPlantAndEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1343612906123651190211067104579947949987498143
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.099.998.998.798.598.473.675.3
Percentage of Assets125.4117.1115.0114.3111.3109.0104.4104.088.291.4
Percentage of Assets oge:OgAndE oge:TotalPropertyPlantAndEquipment0.00.00.00.00.00.00.00.00.00.0

oge:OgAndE, us-gaap:ElectricDistribution


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value4809446842294057389637283559
Percentage of PropertyPlantAndEquipmentGross35.834.634.234.134.835.235.2
Percentage of Assets44.940.539.339.039.238.937.4
Percentage of Assets oge:OgAndE us-gaap:ElectricDistribution0.00.00.00.00.00.00.0

oge:OgAndE, us-gaap:ElectricGenerationEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value49324838465744754155383736203551344633603047
Percentage of PropertyPlantAndEquipmentGross36.737.537.637.637.236.235.836.829.031.131.6
Percentage of Assets46.043.943.343.041.840.038.038.934.737.739.7
Percentage of Assets oge:OgAndE us-gaap:ElectricGenerationEquipment0.00.00.00.00.00.00.00.00.00.00.0

oge:OgAndE, us-gaap:ElectricTransmission


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value29442901284627672548245423702163171214641221
Percentage of PropertyPlantAndEquipmentGross21.922.523.023.222.823.223.522.414.413.512.7
Percentage of Assets27.526.326.526.625.625.624.923.717.316.415.9
Percentage of Assets oge:OgAndE us-gaap:ElectricTransmission0.00.00.00.00.00.00.00.00.00.00.0

oge:OgAndE, us-gaap:PropertyPlantAndEquipmentOtherTypes


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value495473444421381356330330317293243
Percentage of PropertyPlantAndEquipmentGross3.73.73.63.53.43.43.33.42.72.72.5
Percentage of Assets4.64.34.14.03.83.73.53.63.23.33.2
Percentage of Assets oge:OgAndE us-gaap:PropertyPlantAndEquipmentOtherTypes0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PropertyPlantAndEquipmentGross us-gaap:JointlyOwnedUtilityPlant

oge:McclainPlant


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value257254227226234220207180182207
Percentage of PropertyPlantAndEquipmentGross1.92.01.81.92.12.12.11.91.51.9
Percentage of Assets2.42.32.12.22.42.32.22.01.82.3
Percentage of Assets oge:McclainPlant0.00.00.00.00.00.00.00.00.00.0

oge:RedbudPlant


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value531529493496489487484498458
Percentage of PropertyPlantAndEquipmentGross4.04.14.04.24.44.64.85.23.9
Percentage of Assets5.04.84.64.84.95.15.15.54.6
Percentage of Assets oge:RedbudPlant0.00.00.00.00.00.00.00.00.0

Construction In Progress Gross

us-gaap:ConstructionInProgressGross

us-gaap:ConstructionInProgressGross


Construction
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value181185145128124149141125126156376632566525867893797673495365319300278230168147115297222470468501421543387269363501499874774550460335
Percentage of ConstructionInProgressGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.61.41.21.21.41.31.11.21.53.55.95.45.08.38.57.76.65.03.73.33.22.92.41.81.61.23.12.45.15.15.54.85.43.92.83.95.55.610.49.57.26.04.6

us-gaap:ConstructionInProgressGross dei:LegalEntity

oge:OgAndE


Construction
Period End2021-06-302021-03-312020-12-312019-12-31
Value181185145141
Percentage of ConstructionInProgressGross100.0100.0100.0100.0
Percentage of Assets1.51.61.41.3
Percentage of Assets oge:OgAndE1.61.71.41.4

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value41884131406740103957392038683826376637133727368036373607356835843536350334883431337233283274326232093156311930933046301029782935288836203547349034553394334032953255323131833041
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets35.235.037.938.237.937.835.134.534.634.534.734.434.534.634.334.333.934.635.135.134.934.934.133.933.533.232.732.732.732.532.632.132.636.335.736.037.037.437.539.340.042.041.541.9

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment dei:LegalEntity

oge:OgAndE


Accumulated
Period End2021-06-302021-03-312020-12-312019-12-312011-12-312010-12-31
Value418841314067386825922494
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.077.678.4
Percentage of Assets35.235.037.935.129.132.5
Percentage of Assets oge:OgAndE36.636.738.838.40.00.0

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment dei:LegalEntity, us-gaap:PropertyPlantAndEquipmentByType

oge:OgAndE, oge:FiniteLivedIntangibleAssetsMajorClassName


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value153145135135433831272520
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment3.83.83.63.81.31.21.00.90.70.6
Percentage of Assets1.41.31.31.30.40.40.30.30.30.2
Percentage of Assets oge:OgAndE oge:FiniteLivedIntangibleAssetsMajorClassName0.00.00.00.00.00.00.00.00.00.0

oge:OgAndE, oge:TotalPropertyPlantAndEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value4067386837273568338531613005286427052592
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.097.096.696.496.276.377.6
Percentage of Assets37.935.134.734.334.132.931.531.427.329.1
Percentage of Assets oge:OgAndE oge:TotalPropertyPlantAndEquipment0.00.00.00.00.00.00.00.00.00.0

oge:OgAndE, us-gaap:ElectricDistribution


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1422138113241259122111521086
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment35.035.735.535.335.035.234.8
Percentage of Assets13.312.512.312.112.312.011.4
Percentage of Assets oge:OgAndE us-gaap:ElectricDistribution0.00.00.00.00.00.00.0

oge:OgAndE, us-gaap:ElectricGenerationEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value17131601157214931493140713451306124212151164
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment42.141.442.241.842.843.043.143.835.036.436.6
Percentage of Assets16.014.514.614.315.014.714.114.312.513.715.2
Percentage of Assets oge:OgAndE us-gaap:ElectricGenerationEquipment0.00.00.00.00.00.00.00.00.00.00.0

oge:OgAndE, us-gaap:ElectricTransmission


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value591565534506481440417385359339325
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment14.514.614.314.213.813.513.412.910.110.210.2
Percentage of Assets5.55.15.04.94.84.64.44.23.63.84.2
Percentage of Assets oge:OgAndE us-gaap:ElectricTransmission0.00.00.00.00.00.00.00.00.00.00.0

oge:OgAndE, us-gaap:PropertyPlantAndEquipmentOtherTypes


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value1861751601731451231251181089686
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment4.64.54.34.94.23.84.04.03.12.92.7
Percentage of Assets1.71.61.51.71.51.31.31.31.11.11.1
Percentage of Assets oge:OgAndE us-gaap:PropertyPlantAndEquipmentOtherTypes0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:JointlyOwnedUtilityPlant

oge:McclainPlant


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value96837871726246625673
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment2.42.22.12.02.11.91.52.11.62.2
Percentage of Assets0.90.80.70.70.70.70.50.70.60.8
Percentage of Assets oge:McclainPlant0.00.00.00.00.00.00.00.00.00.0

oge:RedbudPlant


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value181159145136121101818969
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment4.54.13.93.83.53.12.63.02.0
Percentage of Assets1.71.41.41.31.21.10.91.00.7
Percentage of Assets oge:RedbudPlant0.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value95759474937492349172909190448961887787698643855784738393833981998088790076967534746973877322716670857012697969276820676266726495638285808344809778637704747471486934659964645911
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets80.580.487.588.087.987.782.080.981.581.580.479.980.480.480.178.477.678.077.477.077.377.676.374.573.973.873.373.273.173.173.071.072.186.084.183.484.184.983.985.385.285.884.381.4

us-gaap:PropertyPlantAndEquipmentNet dei:LegalEntity

oge:OgAndE


Property
Period End2021-06-302021-03-312020-12-312019-12-312011-12-312010-12-31
Value956994689368903855504877
Percentage of PropertyPlantAndEquipmentNet99.999.999.999.974.375.4
Percentage of Assets80.480.387.482.062.363.6
Percentage of Assets oge:OgAndE83.584.289.389.70.00.0

oge:OgeEnergy


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value6.16.16.16.114263838383433
Percentage of PropertyPlantAndEquipmentNet0.10.10.10.10.20.40.60.60.50.50.5
Percentage of Assets0.10.10.10.10.10.30.40.40.40.40.4
Percentage of Assets oge:OgeEnergy0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PropertyPlantAndEquipmentNet dei:LegalEntity, us-gaap:PropertyPlantAndEquipmentByType

oge:OgAndE, oge:FiniteLivedIntangibleAssetsMajorClassName


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value100795246414336232522
Percentage of PropertyPlantAndEquipmentNet1.10.90.60.60.50.60.50.40.30.3
Percentage of Assets0.90.70.50.40.40.40.40.30.30.3
Percentage of Assets oge:OgAndE oge:FiniteLivedIntangibleAssetsMajorClassName0.00.00.00.00.00.00.00.00.00.0

oge:OgAndE, oge:TotalPropertyPlantAndEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value9368903886378333768172966941663460445550
Percentage of PropertyPlantAndEquipmentNet99.999.999.999.999.899.699.499.472.474.3
Percentage of Assets87.482.080.480.077.376.072.972.660.962.3
Percentage of Assets oge:OgAndE oge:TotalPropertyPlantAndEquipment0.00.00.00.00.00.00.00.00.00.0

oge:OgAndE, us-gaap:ElectricDistribution


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value3387308729042798267425762472
Percentage of PropertyPlantAndEquipmentNet36.134.133.633.534.835.235.4
Percentage of Assets31.628.027.026.926.926.826.0
Percentage of Assets oge:OgAndE us-gaap:ElectricDistribution0.00.00.00.00.00.00.0

oge:OgAndE, us-gaap:ElectricGenerationEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value32183237308429812662243022752244220421441882
Percentage of PropertyPlantAndEquipmentNet34.335.835.735.734.633.232.633.626.428.729.1
Percentage of Assets30.029.428.728.626.825.323.924.622.224.124.5
Percentage of Assets oge:OgAndE us-gaap:ElectricGenerationEquipment0.00.00.00.00.00.00.00.00.00.00.0

oge:OgAndE, us-gaap:ElectricTransmission


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value2352233523122261206720131952177813521124895
Percentage of PropertyPlantAndEquipmentNet25.125.826.827.126.927.528.026.716.215.013.9
Percentage of Assets22.021.221.521.720.821.020.519.513.612.611.7
Percentage of Assets oge:OgAndE us-gaap:ElectricTransmission0.00.00.00.00.00.00.00.00.00.00.0

oge:OgAndE, us-gaap:PropertyPlantAndEquipmentOtherTypes


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value309298283247235233205212208197157
Percentage of PropertyPlantAndEquipmentNet3.33.33.33.03.13.22.93.22.52.62.4
Percentage of Assets2.92.72.62.42.42.42.22.32.12.22.1
Percentage of Assets oge:OgAndE us-gaap:PropertyPlantAndEquipmentOtherTypes0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PropertyPlantAndEquipmentNet us-gaap:JointlyOwnedUtilityPlant

oge:McclainPlant


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value161170149155161157161118125133
Percentage of PropertyPlantAndEquipmentNet1.71.91.71.92.12.22.31.81.51.8
Percentage of Assets1.51.61.41.51.61.61.71.31.31.5
Percentage of Assets oge:McclainPlant0.00.00.00.00.00.00.00.00.00.0

oge:RedbudPlant


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value349370348360368386402409389
Percentage of PropertyPlantAndEquipmentNet3.74.14.04.34.85.35.86.14.7
Percentage of Assets3.33.43.23.53.74.04.24.53.9
Percentage of Assets oge:RedbudPlant0.00.00.00.00.00.00.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value374042434434
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.40.40.40.0

us-gaap:OperatingLeaseRightOfUseAsset dei:LegalEntity

oge:OgAndE


Operating
Period End2020-12-312019-12-31
Value3739
Percentage of OperatingLeaseRightOfUseAsset98.496.8
Percentage of Assets0.30.4
Percentage of Assets oge:OgAndE0.40.4

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value12971292431316312310315314300287296265279313338429464462461462420423439425443449453417432408407538535719731701711719732458449353732
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.911.04.03.03.03.02.92.82.82.72.82.52.63.03.34.14.54.64.64.74.44.44.64.44.64.74.84.44.64.44.55.96.17.27.47.27.67.98.25.55.50.50.50.4

us-gaap:OtherAssetsNoncurrent dei:LegalEntity

oge:OgAndE


Other
Period End2021-06-302021-03-312020-12-312019-12-31
Value12961290430314
Percentage of OtherAssetsNoncurrent99.999.899.899.6
Percentage of Assets10.910.94.02.8
Percentage of Assets oge:OgAndE11.311.54.13.1

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value189244251123144157194159151194239171161181230145188244205129159172262125145151179143174209251171219409396280274304388297372294321297
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.62.12.31.21.41.51.81.41.41.82.21.61.51.72.21.41.82.42.11.31.71.82.71.31.51.61.91.51.92.32.71.92.54.14.02.92.93.44.43.54.63.84.24.1

us-gaap:AccountsPayableCurrent dei:LegalEntity

oge:OgAndE


Accounts
Period End2021-06-302021-03-312020-12-312019-12-31
Value178229236175
Percentage of AccountsPayableCurrent94.393.794.189.8
Percentage of Assets1.51.92.21.6
Percentage of Assets oge:OgAndE1.62.02.31.7

Dividends Payable Current

us-gaap:DividendsPayableCurrent

us-gaap:DividendsPayableCurrent


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value8080808077777777737372726666666660606060545454544949494944444441414141383838383636363635
Percentage of DividendsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.70.80.80.70.70.70.70.70.70.70.70.60.60.60.60.60.60.60.60.60.60.60.60.50.50.50.50.50.50.50.50.50.40.40.40.40.40.40.40.50.50.50.5

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value9111836697517594855657696702884869840125012159509539269151027795773706752586662641573869109394910939411016148212761195126811159989349338388141275
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.715.66.54.95.78.26.06.36.58.28.17.911.911.69.19.18.99.010.38.18.07.47.86.16.96.86.09.211.710.312.010.311.514.812.912.313.612.311.211.111.510.910.617.6

us-gaap:LiabilitiesCurrent dei:LegalEntity

oge:OgAndE


Liabilities
Period End2021-06-302021-03-312020-12-312019-12-31
Value422750495437
Percentage of LiabilitiesCurrent46.440.871.166.5
Percentage of Assets3.56.44.64.0
Percentage of Assets oge:OgAndE3.76.74.74.3

us-gaap:LiabilitiesCurrent us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value13171334582644290780
Percentage of LiabilitiesCurrent144.572.683.5124.548.8118.6
Percentage of Assets11.111.35.46.12.87.1
Percentage of Assets us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees0.00.00.00.00.00.0

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value3734333941486576778287827646283663959662383743535652515952474756606364888467647171615532
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.40.40.50.60.70.70.80.80.80.70.40.30.30.60.91.00.60.40.40.50.60.60.60.50.60.60.50.50.60.70.60.70.90.90.70.70.90.90.80.70.4

us-gaap:OtherLiabilitiesCurrent dei:LegalEntity

oge:OgAndE


Other
Period End2021-06-302021-03-312020-12-312019-12-31
Value37343365
Percentage of OtherLiabilitiesCurrent99.7100.099.499.8
Percentage of Assets0.30.30.30.6
Percentage of Assets oge:OgAndE0.30.30.30.6

Taxes Payable Current

us-gaap:TaxesPayableCurrent

us-gaap:TaxesPayableCurrent


Taxes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value5637557857344160402644624231446040254158392445614124395638263957402848654526426142233937
Percentage of TaxesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.30.50.70.60.30.40.50.40.20.40.60.40.30.40.60.40.20.40.60.40.30.50.60.40.30.40.60.40.30.40.60.50.30.50.70.50.30.50.70.50.30.50.5

us-gaap:TaxesPayableCurrent dei:LegalEntity

oge:OgAndE


Taxes
Period End2021-06-302021-03-312020-12-312019-12-31
Value53345341
Percentage of TaxesPayableCurrent94.592.695.7100.0
Percentage of Assets0.40.30.50.4
Percentage of Assets oge:OgAndE0.50.30.50.4

Liabilities Noncurrent

us-gaap:LiabilitiesNoncurrent us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:LiabilitiesNoncurrent

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value324932494052405544544077
Percentage of LiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets27.327.637.838.642.737.0
Percentage of Assets us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees0.00.00.00.00.00.0

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value349431953146299926302755275524002848273723622378
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets32.629.029.328.826.528.728.926.328.730.730.832.7

us-gaap:LongTermDebt dei:LegalEntity

oge:OgAndE


Long
Period End2020-12-312019-12-31
Value34943195
Percentage of LongTermDebt100.0100.0
Percentage of Assets32.629.0
Percentage of Assets oge:OgAndE33.331.7

us-gaap:LongTermDebt us-gaap:DebtInstrument

oge:OgAndESeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value385033503349334933483050305030493048275230013001285528542854285426822683238523852384238425102510250925092509226424032403215421542154190419041904190419031903190319031655
Percentage of LongTermDebt0.00.095.90.00.00.095.50.00.00.095.40.00.00.095.20.00.00.090.70.00.00.091.10.00.00.091.10.00.00.089.80.00.00.066.80.00.00.069.60.00.070.0
Percentage of Assets32.428.431.231.932.129.427.727.528.025.627.928.027.127.427.427.325.726.524.024.424.725.026.226.126.226.426.323.925.826.023.623.624.319.119.219.620.421.021.422.723.421.6
Percentage of Assets oge:OgAndESeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

oge:OgAndETinkerDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-31
Value9.49.49.49.59.59.59.59.69.69.69.69.79.79.79.79.79.89.89.99.99.910.010.0101010101010101010101010100.0
Percentage of LongTermDebt0.00.00.30.00.00.00.30.00.00.00.30.00.00.00.30.00.00.00.40.00.00.00.40.00.00.00.40.00.00.00.40.00.00.00.40.00.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.0
Percentage of Assets oge:OgAndETinkerDebt0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

oge:OgeEnergy


Long
Period End2021-06-30
Value499
Percentage of LongTermDebt0.0
Percentage of Assets4.2
Percentage of Assets oge:OgeEnergy0.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value44953495349434933493319531953194319328972896289625002500274927492863270324052505262926292645264526452645275525092409254923002400240028482848284827372737273725862586233823622088
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets37.829.632.633.333.530.829.028.829.326.927.027.123.724.026.426.327.526.724.225.627.227.627.627.527.627.828.926.525.827.625.226.227.128.528.729.329.330.230.730.931.830.430.828.7

us-gaap:LongTermDebtNoncurrent dei:LegalEntity

oge:OgAndE


Long
Period End2021-06-302021-03-312020-12-312019-12-31
Value3995349534943195
Percentage of LongTermDebtNoncurrent88.9100.0100.0100.0
Percentage of Assets33.629.632.629.0
Percentage of Assets oge:OgAndE34.931.133.331.7

Deferred Tax Liabilities Noncurrent

us-gaap:DeferredTaxLiabilitiesNoncurrent

us-gaap:DeferredTaxLiabilitiesNoncurrent


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value12061287126812291165112913751362132513191310129112551232122724652379233223342314223221882178233322982279226822192130211921252105191618171948213015991512146314341246
Percentage of DeferredTaxLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.110.911.811.711.210.912.512.312.212.312.212.111.911.811.823.622.823.023.523.723.123.022.724.324.024.023.823.522.822.923.323.021.718.219.623.919.118.619.018.717.2

us-gaap:DeferredTaxLiabilitiesNoncurrent dei:LegalEntity

oge:OgAndE


Deferred
Period End2021-06-302021-03-312020-12-312019-12-31
Value95110301020951
Percentage of DeferredTaxLiabilitiesNoncurrent78.880.080.569.2
Percentage of Assets8.08.79.58.6
Percentage of Assets oge:OgAndE8.39.29.79.4

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value179182231194214217225205224227225172188190192185275276274280300298299311310313315247244242241367366399399336334365360241249285372369
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.52.21.92.12.12.01.92.12.12.11.61.81.81.91.82.62.72.82.93.13.13.13.23.23.33.32.62.62.62.64.04.14.04.03.53.64.04.12.93.13.74.95.1

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent dei:LegalEntity

oge:OgAndE


Pension
Period End2021-06-302021-03-312020-12-312019-12-31
Value98101135133
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent54.555.558.559.2
Percentage of Assets0.80.91.31.2
Percentage of Assets oge:OgAndE0.90.91.31.3

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value19519319519219319820019818219516918016316315716016215715315111712412211011110910810710511210089899389878788614844464544
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.61.81.81.91.91.81.81.71.81.61.71.51.61.51.51.61.61.51.51.21.31.31.11.21.21.11.11.11.21.11.01.00.90.90.90.91.00.70.60.50.60.60.6

us-gaap:OtherLiabilitiesNoncurrent dei:LegalEntity

oge:OgAndE


Other
Period End2021-06-302021-03-312020-12-312019-12-31
Value163165167170
Percentage of OtherLiabilitiesNoncurrent83.885.685.585.2
Percentage of Assets1.41.41.61.5
Percentage of Assets oge:OgAndE1.41.51.61.7

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-312019-12-312019-09-302019-06-302018-12-31
Value5700000.05800000.06200000.06200000.03900000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo dei:LegalEntity

oge:OgAndE


Lessee
Period End2020-12-31
Value5700000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets0.1
Percentage of Assets oge:OgAndE0.1

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-312019-12-312019-09-302019-06-302018-12-31
Value5100000.05200000.05900000.05900000.03500000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.10.10.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree dei:LegalEntity

oge:OgAndE


Lessee
Period End2020-12-31
Value5100000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets0.0
Percentage of Assets oge:OgAndE0.0

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-312019-12-312019-09-302019-06-302018-12-31
Value3200000.05200000.05200000.05200000.02900000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour dei:LegalEntity

oge:OgAndE


Lessee
Period End2020-12-31
Value3200000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets0.0
Percentage of Assets oge:OgAndE0.0

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-312019-12-312019-09-302019-06-302018-12-31
Value3000000.03100000.05100000.05100000.02900000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive dei:LegalEntity

oge:OgAndE


Lessee
Period End2020-12-31
Value3000000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.0
Percentage of Assets oge:OgAndE0.0

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-312019-12-312019-09-302019-06-302018-12-31
Value3134373737
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.30.3

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive dei:LegalEntity

oge:OgAndE


Lessee
Period End2020-12-31
Value31
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.3
Percentage of Assets oge:OgAndE0.3

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value424546474839
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.40.40.50.0

us-gaap:OperatingLeaseLiability dei:LegalEntity

oge:OgAndE


Operating
Period End2020-12-312019-12-31
Value4144
Percentage of OperatingLeaseLiability98.696.7
Percentage of Assets0.40.4
Percentage of Assets oge:OgAndE0.40.4

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-312019-12-312019-09-302019-06-302018-12-31
Value5560616172
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.60.60.7

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue dei:LegalEntity

oge:OgAndE


Lessee
Period End2020-12-31
Value54
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue98.9
Percentage of Assets0.5
Percentage of Assets oge:OgAndE0.5

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value12
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.1

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount dei:LegalEntity

oge:OgAndE


Lessee
Period End2020-12-31
Value12
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.1
Percentage of Assets oge:OgAndE0.1

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value364036053631366035643552413941864007397640054029389038423851361634923444344334453321329833263353328632413244324330372994281127452767276826152553256325402387231022892040
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets30.630.633.934.934.134.337.537.836.836.937.337.636.936.837.034.633.534.034.635.234.434.634.734.934.334.134.134.333.232.731.827.527.928.528.028.128.830.329.430.029.928.1

us-gaap:StockholdersEquity dei:LegalEntity

oge:OgAndE


Stockholders
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312018-12-312017-12-31
Value45584517397539833979395836033455
Percentage of StockholdersEquity125.2125.3109.5111.8112.095.690.089.7
Percentage of Assets38.338.337.138.238.435.933.533.2
Percentage of Assets oge:OgAndE39.840.237.90.00.039.30.00.0

us-gaap:StockholdersEquity dei:LegalEntity, us-gaap:StatementEquityComponents

oge:OgAndE, us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312018-12-312017-12-31
Value14691469938937936935930926
Percentage of StockholdersEquity40.440.725.826.326.422.623.224.1
Percentage of Assets12.412.58.89.09.08.58.78.9
Percentage of Assets oge:OgAndE us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.0

oge:OgAndE, us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312018-12-312017-12-31
Value29872947293629452941292125712428
Percentage of StockholdersEquity82.181.780.882.682.870.664.263.1
Percentage of Assets25.125.027.428.228.426.523.923.3
Percentage of Assets oge:OgAndE us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.0

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value3640360536313660356435524139418640073976400540293890384238513616349234443443344533213298332633533286324132443243309930373037299428113052307230362878281028192698254824682400224821192055206019141691
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets30.630.633.934.934.134.337.537.836.836.937.337.636.936.837.034.633.534.034.635.234.434.634.734.934.334.134.134.333.232.833.232.731.830.631.031.330.831.031.732.231.332.131.329.929.10.028.40.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value-27.9-28.6-32.1-25.7-27.9-28.8-27.9-20.4-21.1-22.1-28.9-18.9-22.3-23.0-23.2-20.3-27.9-28.7-29.3-29.0-29.4-34.7-35.1-36.1-40.5-41.2-41.4-27.3-27.6-27.9-28.2-51.9-53.3-48.3-49.1-41.0-41.5-42.1-40.6-35.5-41.8-46.9-60.2-68.9-62.9-76.2-74.7-13.7-81.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.8-0.8-0.9-0.7-0.8-0.8-0.7-0.5-0.5-0.6-0.7-0.5-0.6-0.6-0.6-0.6-0.8-0.8-0.9-0.8-0.9-1.1-1.1-1.1-1.2-1.3-1.3-0.8-0.9-0.9-0.9-1.7-1.9-1.6-1.6-1.4-1.4-1.5-1.4-1.3-1.6-1.9-2.5-3.1-3.0-3.7-3.6-0.7-4.8
Percentage of Assets-0.2-0.2-0.3-0.2-0.3-0.3-0.3-0.2-0.2-0.2-0.3-0.2-0.2-0.2-0.2-0.2-0.3-0.3-0.3-0.3-0.3-0.4-0.4-0.4-0.4-0.4-0.4-0.3-0.3-0.3-0.3-0.6-0.6-0.5-0.5-0.4-0.4-0.5-0.5-0.4-0.5-0.6-0.8-0.9-0.90.0-1.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value111811161122111911171114112911261121111811251122111811151112110811081105110311021102110010991102109510891085107810731067107110651057103810461033102710211034998993987968907901893886802755
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest30.731.030.930.631.331.427.326.928.028.128.127.828.729.028.930.631.732.132.132.033.233.433.132.933.333.633.533.334.635.135.335.637.634.034.134.035.736.336.737.039.040.040.340.442.543.443.041.944.7
Percentage of Assets9.49.510.510.710.710.710.210.210.310.410.510.510.610.710.710.610.610.911.111.311.411.611.511.511.411.511.411.411.511.511.711.712.010.410.510.611.011.311.611.912.212.812.612.112.40.012.20.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value2.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.01.01.01.01.01.01.01.01.01.01.01.01.01.01.00.90.9
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.10.10.10.10.10.10.00.00.00.10.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value2547251525442570247324653036307829042877290629242792274827592526240923652367236922462230225922852229219121982189205219961991197818041754177217751628157315741576143413681380138612581216122711071005
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest70.069.870.170.269.469.473.373.572.572.472.672.671.871.571.769.969.068.768.768.867.667.667.968.167.867.667.867.566.265.765.666.164.257.557.758.556.656.055.958.456.355.457.561.759.459.259.657.959.5
Percentage of Assets21.421.323.724.523.723.827.527.826.726.727.027.326.526.326.524.123.123.323.824.223.323.423.523.823.223.123.123.122.021.621.821.620.417.617.918.317.417.317.718.817.617.818.018.417.30.016.90.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312015-12-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value-0.1-0.1-5.3-5.3-0.3-0.30.00.00.00.00.00.00.00.00.00.00.00.00.0-3.5-0.1-0.1-0.3-6.20.00.00.00.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.0-0.0-0.1-0.1-0.0-0.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.1-0.0-0.0-0.0-0.20.00.00.00.00.00.0
Percentage of Assets-0.0-0.0-0.0-0.1-0.0-0.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.0-0.0-0.0-0.0-0.10.00.00.00.00.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value2.02.02.02.02.02.02.02.01.01.01.01.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value1122112911251112110310991085107110461034968886
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.510.210.510.711.111.511.411.710.511.612.612.2

us-gaap:AdditionalPaidInCapitalCommonStock dei:LegalEntity

oge:OgAndE


Additional
Period End2020-12-312019-12-31
Value938935
Percentage of AdditionalPaidInCapitalCommonStock83.682.9
Percentage of Assets8.88.5
Percentage of Assets oge:OgAndE8.99.3

Common Stocks Including Additional Paid In Capital

us-gaap:CommonStocksIncludingAdditionalPaidInCapital

us-gaap:CommonStocksIncludingAdditionalPaidInCapital


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value1120111811241121111911161131112811231120112711241120111711141110111011071105110411041102110111041097109110871080107510691073106710591047
Percentage of CommonStocksIncludingAdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.49.510.510.710.710.810.310.210.310.410.510.510.610.710.710.610.710.911.111.311.411.611.511.511.411.511.411.411.511.611.811.712.010.6

us-gaap:CommonStocksIncludingAdditionalPaidInCapital dei:LegalEntity

oge:OgAndE


Common
Period End2021-06-302021-03-312020-12-312019-12-31
Value1570157010391036
Percentage of CommonStocksIncludingAdditionalPaidInCapital140.1140.492.491.6
Percentage of Assets13.213.39.79.4
Percentage of Assets oge:OgAndE13.714.09.910.3

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value25472515254425702473246530363078290428772906292427922748275925262409236523672369224622302259228522292191219821892052199619911978180417541772177516281573157415761434136813801227
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets21.421.323.724.523.723.827.527.826.726.727.027.326.526.326.524.123.123.323.824.223.323.423.523.823.223.123.123.122.021.621.821.620.417.617.918.317.417.317.718.817.617.818.016.9

us-gaap:RetainedEarningsAccumulatedDeficit dei:LegalEntity

oge:OgAndE


Retained
Period End2021-06-302021-03-312020-12-312019-12-31
Value2987294729362921
Percentage of RetainedEarningsAccumulatedDeficit117.2117.2115.496.2
Percentage of Assets25.125.027.426.5
Percentage of Assets oge:OgAndE26.126.228.029.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value-27900000.0-28600000.0-32100000.0-25700000.0-27900000.0-28800000.0-27900000.0-20400000.0-21100000.0-22100000.0-28900000.0-18900000.0-22300000.0-23000000.0-23200000.0-20300000.0-27900000.0-28700000.0-29300000.0-29000000.0-29400000.0-34700000.0-35100000.0-36100000.0-40500000.0-41200000.0-41400000.0-27300000.0-27600000.0-27900000.0-28200000.0-51900000.0-53300000.0-48300000.0-49100000.0-41000000.0-41500000.0-42100000.0-40600000.0-35500000.0-41800000.0-46900000.0-60200000.0-74700000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.2-0.2-0.3-0.2-0.3-0.3-0.3-0.2-0.2-0.2-0.3-0.2-0.2-0.2-0.2-0.2-0.3-0.3-0.3-0.3-0.3-0.4-0.4-0.4-0.4-0.4-0.4-0.3-0.3-0.3-0.3-0.6-0.6-0.5-0.5-0.4-0.4-0.5-0.5-0.4-0.5-0.6-0.8-1.0

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2020-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value5300000.000003500000.0100000.0100000.0300000.06200000.00
Percentage of TreasuryStockValue100.00.00.00.00.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.10.0

Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.3-0.82.42.3-5.14.92.9-7.23.83.93.02.34.40.22.42.11.4-0.11.61.6-2.96.42.30.73.82.02.4-7.42.44.22.6-8.35.62.62.4-13.44.31.42.5-2.42.92.73.21.6
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue dei:LegalEntity

oge:OgAndE


Adjustments
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.60.50.70.9
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue26.1-62.530.4-17.6
Percentage of Assets0.00.00.00.0
Percentage of Assets oge:OgAndE0.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue dei:LegalEntity, us-gaap:StatementEquityComponents

oge:OgAndE, us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.60.50.70.9
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue26.1-62.530.4-17.6
Percentage of Assets0.00.00.00.0
Percentage of Assets oge:OgAndE us-gaap:AdditionalPaidInCapital0.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.3-6.02.42.3-14.54.92.9-7.23.83.93.02.34.40.22.42.11.4-0.11.61.6-2.96.42.30.73.82.02.4-7.42.44.22.5-10.92.92.52.6-16.74.31.42.5-2.42.92.73.21.6
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0750.0100.0100.0284.3100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.096.2131.351.896.2108.3124.6100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Adjustments
Period End2021-03-312020-06-302020-03-312019-06-302019-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value5.20.09.40.00.00.00.00.00.00.00.00.03.50.00.00.25.90.00.00.00.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue-650.00.0-184.30.0-0.00.00.00.0-0.00.00.00.0-42.20.00.08.3-44.00.00.00.0-0.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value172-940.2187261159103263289992823935718716732026610691217260927325630316613925528415823272271205936839616112030528217076195245225116
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax30.5-58.039.938.132.424.755.839.119.96.146.852.234.234.963.90.00.00.041.035.116.816.957.342.130.229.148.537.725.94.153.437.52.86.642.735.618.914.334.523.317.49.123.621.825.413.2

us-gaap:NetCashProvidedByUsedInOperatingActivities dei:LegalEntity

oge:OgAndE


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value157-939.913489
Percentage of NetCashProvidedByUsedInOperatingActivities91.1100.084.685.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.8-58.027.421.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE27.8-58.027.421.2

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-197800000.0-159000000.0-232800000.0-139800000.0-157400000.0-124900000.0-142300000.0-164700000.0-163800000.0-153900000.0-162900000.0-146200000.0-129300000.0-137600000.0-161600000.0-170000000.0-270400000.0-219900000.0-179900000.0-134800000.0-134600000.0-171100000.0-164200000.0-110200000.0-117000000.0-108700000.0-131800000.0-130300000.0-125600000.0-171400000.0-217600000.0-207600000.0-242300000.0-289500000.0-356000000.0-309700000.0-231800000.0-295100000.0-543500000.0-319600000.0-350700000.0-182000000.0-260100000.0-294400000.0-161000000.0-130600000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-35.0-9.8-49.6-20.3-32.0-29.7-30.1-22.3-32.7-32.2-31.8-21.4-23.6-28.8-32.20.00.00.0-33.9-18.1-24.4-39.5-36.7-15.3-21.3-22.6-25.0-17.3-20.5-30.6-42.8-28.7-33.0-32.1-41.3-27.8-27.1-35.1-61.4-26.4-35.9-21.7-31.4-26.2-18.1-14.9

us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity

oge:OgAndE


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value-195100000.0-158400000.0-153600000.0-127200000.0
Percentage of NetCashProvidedByUsedInInvestingActivities98.699.697.6101.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-34.6-9.8-31.2-30.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE-34.6-9.8-31.2-30.3

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value25109814-157.7-80.4166-134.4-111.36330-72.9-120.6-60.2-41.5-144.8-96.3164128-37.5-126.14222-60.2-149.8-50.7-34.9-117.8-156.6-33.2143-47.6-63.7214235-20.5-78.370171237371811075850-62.9-37.8
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.567.73.1-22.9-16.339.7-28.4-15.112.86.4-14.2-17.6-11.0-8.7-28.90.00.00.0-7.1-17.07.65.2-13.5-20.8-9.2-7.3-22.4-20.7-5.425.7-9.4-8.829.226.1-2.4-7.08.320.426.83.118.612.87.04.5-7.1-4.3

us-gaap:NetCashProvidedByUsedInFinancingActivities dei:LegalEntity

oge:OgAndE


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value3810988638
Percentage of NetCashProvidedByUsedInFinancingActivities149.6100.0-107.222.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.767.817.59.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE6.767.817.59.1

Cash And Cash Equivalents Period Increase Decrease

us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease

us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.0-1.1-30.9-35.5-78.4145-13.2130.0-94.33.690-2.3-12.1140.00.0-0.30.30.00.0-75.23143-1.5-4.05.5-2.2-0.2-4.46.80.0-7.15.3-8.48.50.1-3.0-1.00.51.11.7-6.21.21.6-52.4
Percentage of CashAndCashEquivalentsPeriodIncreaseDecrease0.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.00.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.1-6.6-5.2-15.934.7-2.81.80.0-19.80.713.3-0.4-2.52.90.00.00.00.10.00.0-17.47.16.0-0.3-0.81.0-0.3-0.0-0.81.30.0-1.00.6-1.00.80.0-0.4-0.10.00.10.2-0.70.10.2-6.0

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-42.4-28.7128-17.4-18.4-32.83414-40.8-42.66311-22.0-23.756-30.4-23.62445-33.8-12.7-44.188-17.0-25.6-15.136-39.7-31.4-29.672-11.4-20.41610611-33.4-59.275-34.837-43.172-18.535-30.4
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayable dei:LegalEntity

oge:OgAndE


Increase
Period End2021-06-302021-03-312020-06-302020-03-31
Value-37.300000000000004-29.1-18.6-27.0
Percentage of IncreaseDecreaseInAccountsPayable88.0101.4101.182.3

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value67-26.0-66.02752-16.2-95.26331-19.2-76.24.966-14.8-65.47548-36.4-51.36128-38.0-49.53616-19.6-49.450-4.512-77.87049-8.4-95.38834-54.8-70.571388.1-36.123-5.229
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsReceivable dei:LegalEntity

oge:OgAndE


Increase
Period End2021-06-302021-03-312020-06-302020-03-31
Value71-27.753-18.9
Percentage of IncreaseDecreaseInAccountsReceivable105.4106.5102.1116.7

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3.47.06.90.5-3.55.03.8-0.81.9-9.1-12.4-14.8-12.3127.7-3.0-8.87.7-1.5-19.7-1.0-10.231-4.25.82313-11.5-26.04.00.1-25.2127.70.0-17.36.9-3.37.3-27.6-50.016-57.5-16.242-14.1
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInInventories dei:LegalEntity

oge:OgAndE


Increase
Period End2021-06-302021-03-312020-06-302020-03-31
Value3.47.0-3.55.0
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value172-940.2187261159103263289992823935718716732026610691217260927325630316613925528415823272271205936839616112030528217076195245225116
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax30.5-58.039.938.132.424.755.839.119.96.146.852.234.234.963.90.00.00.041.035.116.816.957.342.130.229.148.537.725.94.153.437.52.86.642.735.618.914.334.523.317.49.123.621.825.413.2

us-gaap:NetCashProvidedByUsedInOperatingActivities dei:LegalEntity

oge:OgAndE


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value157-939.913489
Percentage of NetCashProvidedByUsedInOperatingActivities91.1100.084.685.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.8-58.027.421.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE27.8-58.027.421.2

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1125217785-491.825010047205110551831043657183712529111874358187100495721591233818593373617810324301637724
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.03.325.817.5-117.033.920.09.930.020.211.50.00.00.010.924.713.05.86.615.415.99.011.124.816.58.811.329.812.52.64.516.711.04.44.114.710.53.03.714.58.72.8

us-gaap:NetIncomeLoss dei:LegalEntity

oge:OgAndE


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value85117819
Percentage of NetIncomeLoss75.421.391.9-4.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.10.716.04.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE15.10.716.04.7

us-gaap:NetIncomeLoss dei:LegalEntity, us-gaap:StatementEquityComponents

oge:OgAndE, us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value85117819
Percentage of NetIncomeLoss75.421.391.9-4.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.10.716.04.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE us-gaap:RetainedEarnings0.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value112525417785-491.83525010047542051105529418310436571837125291118743581871004957215932843192101474318110929331637725
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.03.311.725.817.5-117.07.533.920.09.910.730.020.211.558.70.00.00.010.924.713.05.86.615.415.99.011.124.816.58.811.329.812.73.15.017.311.95.74.915.011.23.54.114.58.82.9

us-gaap:ProfitLoss us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value7915587-173.0351039.0123115
Percentage of ProfitLoss70.0294.1158.8-97.540.7-20.925.449.0114.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.09.618.5-25.27.124.51.916.622.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees0.00.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementBusinessSegments

oge:ElectricUtility


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value851141199781928227741920183923141161861645159726.119162691737157762029171
Percentage of ProfitLoss75.421.375.0112.591.9-4.081.690.674.441.638.089.783.156.914.188.182.345.079.187.1101.124.267.7146.578.939.663.584.076.342.050.579.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.10.78.829.016.04.76.130.714.94.14.126.916.86.58.30.00.00.08.621.513.11.44.522.612.53.67.120.812.63.75.723.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:ElectricUtility0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

oge:NaturalGasMidstreamOperations


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value3237231019-568.04.7282621342822232652118201322-0.41818-50.01822202824292745
Percentage of ProfitLoss28.571.943.65.722.1115.513.311.426.845.263.413.820.042.990.111.617.555.623.512.3-0.671.463.3-45.020.652.835.415.123.859.646.921.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.72.35.11.53.9-135.11.03.95.44.56.84.14.04.952.90.00.00.02.63.0-0.14.24.2-6.93.34.73.93.73.95.25.36.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:NaturalGasMidstreamOperations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllOtherSegments


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-4.43.6-10.2-32.2-12.0561.8-4.8-1.26.2-0.8-7.2-3.40.1-12.40.60.3-0.2-1.51.2-0.41.1-9.1-1.70.53.30.61.8-0.1-0.81.4-2.0
Percentage of ProfitLoss-3.96.8-18.6-18.2-14.0-11.45.1-1.9-1.213.2-1.5-3.5-3.10.2-4.20.30.3-0.6-2.60.7-0.64.4-31.0-1.50.67.61.01.0-0.1-1.62.4-0.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.80.2-2.2-4.7-2.413.40.4-0.6-0.21.3-0.2-1.1-0.60.0-2.50.00.00.0-0.30.2-0.10.3-2.0-0.20.10.70.10.2-0.0-0.10.3-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value112525417785-491.8352501004754205110552941831043657183712529111874358187100495721591233818593373617810324301637724
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.098.682.588.596.492.478.184.398.594.283.590.899.899.296.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.03.311.725.817.5-117.07.533.920.09.910.730.020.211.558.70.00.00.010.924.713.05.86.615.415.99.011.124.816.58.811.329.812.52.64.516.711.04.44.114.710.53.03.714.58.72.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.32.53.12.42.32.03.14.92.93.03.73.93.12.74.40.22.42.11.40.01.51.72.11.41.90.52.71.61.6-8.61.41.71.7-8.34.52.32.4-11.84.43.02.7-2.32.52.61.90.4
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensation dei:LegalEntity

oge:OgAndE


Share
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.60.40.70.9
Percentage of ShareBasedCompensation26.116.030.445.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-197800000.0-159000000.0-232800000.0-139800000.0-157400000.0-124900000.0-142300000.0-164700000.0-163800000.0-153900000.0-162900000.0-146200000.0-129300000.0-137600000.0-161600000.0-170000000.0-270400000.0-219900000.0-179900000.0-134800000.0-134600000.0-171100000.0-164200000.0-110200000.0-117000000.0-108700000.0-131800000.0-130300000.0-125600000.0-171400000.0-217600000.0-207600000.0-242300000.0-289500000.0-356000000.0-309700000.0-231800000.0-295100000.0-543500000.0-319600000.0-350700000.0-182000000.0-260100000.0-294400000.0-161000000.0-130600000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-35.0-9.8-49.6-20.3-32.0-29.7-30.1-22.3-32.7-32.2-31.8-21.4-23.6-28.8-32.20.00.00.0-33.9-18.1-24.4-39.5-36.7-15.3-21.3-22.6-25.0-17.3-20.5-30.6-42.8-28.7-33.0-32.1-41.3-27.8-27.1-35.1-61.4-26.4-35.9-21.7-31.4-26.2-18.1-14.9

us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity

oge:OgAndE


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value-195100000.0-158400000.0-153600000.0-127200000.0
Percentage of NetCashProvidedByUsedInInvestingActivities98.699.697.6101.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-34.6-9.8-31.2-30.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE-34.6-9.8-31.2-30.3

Payments To Acquire Productive Assets

us-gaap:PaymentsToAcquireProductiveAssets

us-gaap:PaymentsToAcquireProductiveAssets


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value195158230138153127159162161152159140136137161171271219193135153177172147118108131139125171217207239325357234247311363335376195-1464.2306171135
Percentage of PaymentsToAcquireProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireProductiveAssets dei:LegalEntity

oge:OgAndE


Payments
Period End2021-06-302021-03-312020-06-302020-03-31
Value195158153127
Percentage of PaymentsToAcquireProductiveAssets100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value25109814-157.7-80.4166-134.4-111.36330-72.9-120.6-60.2-41.5-144.8-96.3164128-37.5-126.14222-60.2-149.8-50.7-34.9-117.8-156.6-33.2143-47.6-63.7214235-20.5-78.370171237371811075850-62.9-37.8
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.567.73.1-22.9-16.339.7-28.4-15.112.86.4-14.2-17.6-11.0-8.7-28.90.00.00.0-7.1-17.07.65.2-13.5-20.8-9.2-7.3-22.4-20.7-5.425.7-9.4-8.829.226.1-2.4-7.08.320.426.83.118.612.87.04.5-7.1-4.3

us-gaap:NetCashProvidedByUsedInFinancingActivities dei:LegalEntity

oge:OgAndE


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value3810988638
Percentage of NetCashProvidedByUsedInFinancingActivities149.6100.0-107.222.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.767.817.59.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oge:OgAndE6.767.817.59.1

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2020-12-312020-09-302019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312011-09-302010-12-312010-09-30
Value0.0-0.10.10.50.03960.00.0-0.2295-0.62970.00.00.00.00.00.00.00.03420.0-0.42460.0-0.12470.00.02500.00.00.00.0
Percentage of ProceedsFromIssuanceOfLongTermDebt0.0100.0100.0100.00.0100.00.00.0100.0100.0100.0100.00.00.00.00.00.00.00.00.0100.00.0100.0100.00.0100.0100.00.00.0100.00.00.00.00.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


Repayments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312013-09-302012-12-312012-09-302011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.00.10.00.00.10.00.02500.12500.00.01001250.00.10.10.00.01100.10.00.10.0100140-0.10.10.00.00.00.00.00.00.00.00.0289
Percentage of RepaymentsOfLongTermDebt0.0100.00.00.0100.00.00.0100.0100.0100.00.00.0100.0100.00.0100.0100.00.00.0100.0100.00.0100.00.0100.0100.0100.0100.00.00.00.00.00.00.00.00.00.0100.0

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value80818077777977737375726666666660606060545454544949494944444441414141383838383636363635353535
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrumentInterestRateStatedPercentage

us-gaap:DebtInstrumentInterestRateStatedPercentage


Debt
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302011-12-31
Value3.250.03250.03250.0330.0330.0525
Percentage of DebtInstrumentInterestRateStatedPercentage100.0100.0100.0100.0100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.0

us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

oge:OgAndE, oge:DueAugust312062, us-gaap:LongTermDebt


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value3.80.0380.0380.0370.037
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations oge:OgAndE oge:DueAugust312062 us-gaap:LongTermDebt0.00.00.00.00.0

oge:OgAndE, oge:SeniorNotesDueMay152041, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5.250.05250.05250.05250.0525
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations oge:OgAndE oge:SeniorNotesDueMay152041 us-gaap:SeniorNotes0.00.00.00.00.0

oge:OgAndE, oge:SeriesDueApril12030, us-gaap:SeniorNotes


Debt
Period End2020-12-31
Value3.25
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations oge:OgAndE oge:SeriesDueApril12030 us-gaap:SeniorNotes0.0

oge:OgAndE, oge:SeriesDueApril152028, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value6.50.0650.0650.0650.065
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations oge:OgAndE oge:SeriesDueApril152028 us-gaap:SeniorNotes0.00.00.00.00.0

oge:OgAndE, oge:SeriesDueAugust152028Member, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-31
Value3.80.0380.038
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations oge:OgAndE oge:SeriesDueAugust152028Member us-gaap:SeniorNotes0.00.00.0

oge:OgAndE, oge:SeriesDueFebruary12038, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value6.450.06450.06450.06450.0645
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations oge:OgAndE oge:SeriesDueFebruary12038 us-gaap:SeniorNotes0.00.00.00.00.0

oge:OgAndE, oge:SeriesDueJanuary152036, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5.750.05750.05750.05750.0575
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations oge:OgAndE oge:SeriesDueJanuary152036 us-gaap:SeniorNotes0.00.00.00.00.0

oge:OgAndE, oge:SeriesDueJuly152027, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value6.650.06650.06650.06650.0665
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations oge:OgAndE oge:SeriesDueJuly152027 us-gaap:SeniorNotes0.00.00.00.00.0

oge:OgAndE, oge:SeriesDueJune12040, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5.850.05850.05850.05850.0585
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations oge:OgAndE oge:SeriesDueJune12040 us-gaap:SeniorNotes0.00.00.00.00.0

oge:OgAndE, oge:SeriesDueMarch152030, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-31
Value3.30.033
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations oge:OgAndE oge:SeriesDueMarch152030 us-gaap:SeniorNotes0.00.0

oge:OgAndE, oge:SeriesDueMay12043, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value3.90.0390.0390.0390.039
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations oge:OgAndE oge:SeriesDueMay12043 us-gaap:SeniorNotes0.00.00.00.00.0

oge:OgAndE, oge:SeriesDueMay262023, us-gaap:SeniorNotes


Debt
Period End2021-06-30
Value0.553
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations oge:OgAndE oge:SeriesDueMay262023 us-gaap:SeniorNotes0.0

oge:OgAndE, oge:SeriesdueApril12047, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312017-12-312017-09-302017-06-302017-03-31
Value4.150.04150.04150.04150.04150.04150.0415
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations oge:OgAndE oge:SeriesdueApril12047 us-gaap:SeniorNotes0.00.00.00.00.00.00.0

oge:OgAndE, oge:SeriesdueAugust152047MemberDomain, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312017-12-312017-09-30
Value3.850.03850.03850.03850.0385
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations oge:OgAndE oge:SeriesdueAugust152047MemberDomain us-gaap:SeniorNotes0.00.00.00.00.0

oge:OgAndE, oge:SeriesdueDecember152044, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312014-12-31
Value4.00.040.040.040.040.04
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations oge:OgAndE oge:SeriesdueDecember152044 us-gaap:SeniorNotes0.00.00.00.00.00.0

oge:OgAndE, oge:SeriesdueMarch152044, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312014-12-312014-09-302014-06-30
Value4.550.04550.04550.04550.04550.04550.04550.0455
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations oge:OgAndE oge:SeriesdueMarch152044 us-gaap:SeniorNotes0.00.00.00.00.00.00.00.0

oge:OgeEnergy, oge:SeriesDueMay262023, us-gaap:SeniorNotes


Debt
Period End2021-06-30
Value0.703
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations oge:OgeEnergy oge:SeriesDueMay262023 us-gaap:SeniorNotes0.0

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:Range, us-gaap:DebtInstrument, us-gaap:ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTerms

srt:Maximum, oge:GarfieldIndustrialAuthorityBond, us-gaap:DebenturesSubjectToMandatoryRedemption


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.270.335.355.350.0220.05350.0250.0250.0250.01880.020.020.02
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.0164.667.7164.60.075.875.80.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations srt:Maximum oge:GarfieldIndustrialAuthorityBond us-gaap:DebenturesSubjectToMandatoryRedemption0.00.00.00.00.00.00.00.00.00.00.00.00.0

srt:Maximum, oge:MuskogeeIndustrialAuthorityBondDue2025, us-gaap:DebenturesSubjectToMandatoryRedemption


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.330.274.314.310.0150.04310.02350.02350.02350.01850.01830.01830.0183
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.0132.646.2132.60.071.271.20.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations srt:Maximum oge:MuskogeeIndustrialAuthorityBondDue2025 us-gaap:DebenturesSubjectToMandatoryRedemption0.00.00.00.00.00.00.00.00.00.00.00.00.0

srt:Maximum, oge:MuskogeeIndustrialAuthorityBondDue2027, us-gaap:DebenturesSubjectToMandatoryRedemption


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.270.275.355.350.0220.05350.02480.02480.02480.01860.01860.01860.0186
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.0164.667.7164.60.075.275.20.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations srt:Maximum oge:MuskogeeIndustrialAuthorityBondDue2027 us-gaap:DebenturesSubjectToMandatoryRedemption0.00.00.00.00.00.00.00.00.00.00.00.00.0

srt:Minimum, oge:GarfieldIndustrialAuthorityBond, us-gaap:DebenturesSubjectToMandatoryRedemption


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.170.230.280.30.00350.010.0120.0130.01460.01430.01010.01010.0106
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.09.210.830.80.039.444.20.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations srt:Minimum oge:GarfieldIndustrialAuthorityBond us-gaap:DebenturesSubjectToMandatoryRedemption0.00.00.00.00.00.00.00.00.00.00.00.00.0

srt:Minimum, oge:MuskogeeIndustrialAuthorityBondDue2025, us-gaap:DebenturesSubjectToMandatoryRedemption


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.160.20.330.330.00370.010.01190.01340.01430.01350.01010.01010.0105
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.010.211.430.80.040.643.30.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations srt:Minimum oge:MuskogeeIndustrialAuthorityBondDue2025 us-gaap:DebenturesSubjectToMandatoryRedemption0.00.00.00.00.00.00.00.00.00.00.00.00.0

srt:Minimum, oge:MuskogeeIndustrialAuthorityBondDue2027, us-gaap:DebenturesSubjectToMandatoryRedemption


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.170.20.280.30.00350.010.0120.01360.01450.01360.01030.01030.0106
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.09.210.830.80.041.243.90.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations srt:Minimum oge:MuskogeeIndustrialAuthorityBondDue2027 us-gaap:DebenturesSubjectToMandatoryRedemption0.00.00.00.00.00.00.00.00.00.00.00.00.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value212020202013107.80.00.00.0
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:UnrecognizedTaxBenefits us-gaap:ValuationAllowanceByDeferredTaxAsset

oge:DeferredTaxAsset


Unrecognized
Period End2020-12-31
Value17
Percentage of UnrecognizedTaxBenefits80.4

Proceeds From Repayments Of Short Term Debt

us-gaap:ProceedsFromRepaymentsOfShortTermDebt

us-gaap:ProceedsFromRepaymentsOfShortTermDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-893.6118395-75.0-300.0263-56.8-38.7-158.93660.0-200.16.22521-46.765-108.023-71.2961870.0-105.5-4.411-313.4248.8-61.8-7.4-31.7-228.3276-24.7-141.1107212-11.977-26.192-79.0111-228.7166
Percentage of ProceedsFromRepaymentsOfShortTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oge:AdditionalPensionExpenseToMeetStateRequirements dei:EntityByLocation, us-gaap:RetirementPlanType

oge:AdditionalPensionExpenseToMeetStateRequirements

stpr:OK, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value0.10.1-1.00.40.60.20.10.10.50.30.10.12.22.12.31.91.01.11.92.0
Percentage of AdditionalPensionExpenseToMeetStateRequirements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stpr:OK, us-gaap:PensionPlansDefinedBenefit


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-06-302018-03-31
Value4.2-20.7-19.52.41.61.7-15.91.50.71.03.84.0
Percentage of AdditionalPensionExpenseToMeetStateRequirements4200.0-20700.01950.0600.0266.7850.0-15900.01500.0140.0333.3172.7190.5

oge:AdjustmentstoAdditionalPaidinCapitalSharebasedCompensationRequisiteServicePeriodRecognitionNumberofShares us-gaap:StatementEquityComponents

oge:AdjustmentstoAdditionalPaidinCapitalSharebasedCompensationRequisiteServicePeriodRecognitionNumberofShares

us-gaap:TreasuryStock


Adjustmentsto
Period End2021-03-312020-06-302020-03-312019-06-302019-03-31
Value-100000.00-200000.000
Percentage of AdjustmentstoAdditionalPaidinCapitalSharebasedCompensationRequisiteServicePeriodRecognitionNumberofShares100.00.0100.00.00.0

oge:AmountAttributableToParent dei:LegalEntity, us-gaap:RetirementPlanType

oge:AmountAttributableToParent

oge:OgAndE, us-gaap:OtherPensionPlansDefinedBenefit


Amount
Period End2021-06-302021-03-312020-06-302020-03-31
Value300000.0200000.0400000.0200000.0
Percentage of AmountAttributableToParent100.0100.0100.0100.0

oge:OgAndE, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Amount
Period End2021-06-302021-03-312020-06-302020-03-31
Value-100000.0-100000.0-200000.0-200000.0
Percentage of AmountAttributableToParent-33.3-50.0-50.0-100.0

oge:OgAndE, us-gaap:PensionPlansDefinedBenefit


Amount
Period End2021-06-302021-03-312020-06-302020-03-31
Value700000.03900000.0500000.0500000.0
Percentage of AmountAttributableToParent233.31950.0125.0250.0

oge:AmountAttributabletoUnconsolidatedAffiliates us-gaap:RetirementPlanType

oge:AmountAttributabletoUnconsolidatedAffiliates

us-gaap:OtherPensionPlansDefinedBenefit


Amount
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0100000.0000100000.0000100000.00000000100000.0200000.0
Percentage of AmountAttributabletoUnconsolidatedAffiliates0.0100.00.00.00.0100.00.00.00.0100.00.00.00.00.00.00.00.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Amount
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-200000.0-100000.0-100000.0-200000.0-200000.0-200000.0-100000.0-200000.0-100000.0-200000.0-100000.0-200000.0-100000.0-100000.0-200000.0-100000.0200000.0400000.0100000.000
Percentage of AmountAttributabletoUnconsolidatedAffiliates0.00.00.0-200.00.00.00.0-200.00.00.00.0-200.00.00.00.00.00.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Amount
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-200000.0100000.0400000.0500000.0600000.0500000.0700000.0500000.0800000.0900000.0600000.0700000.0700000.0500000.01400000.01200000.0900000.0800000.01300000.01300000.01200000.0
Percentage of AmountAttributabletoUnconsolidatedAffiliates0.00.00.0500.00.00.00.0500.00.00.00.0700.00.00.00.00.00.00.00.01300.0600.0

oge:CapitalizedPortionOfNetPeriodicBenefitCost dei:LegalEntity, us-gaap:RetirementPlanType

oge:CapitalizedPortionOfNetPeriodicBenefitCost

oge:OgAndE, us-gaap:PensionPlansDefinedBenefit


Capitalized
Period End2021-06-302021-03-312020-06-302020-03-31
Value700000.0700000.0600000.0900000.0
Percentage of CapitalizedPortionOfNetPeriodicBenefitCost100.0100.0100.0100.0

oge:CapitalizedPortionOfNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0100000.0100000.00100000.00100000.000100000.0100000.00100000.00-100000.0100000.0500000.0700000.0200000.0200000.0200000.0
Percentage of CapitalizedPortionOfNetPeriodicBenefitCost0.014.30.00.016.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value800000.0800000.01100000.0900000.0800000.01000000.0900000.0900000.0800000.01000000.01000000.0900000.0900000.01000000.01100000.01000000.01200000.01000000.01000000.01000000.0800000.0
Percentage of CapitalizedPortionOfNetPeriodicBenefitCost114.3114.30.00.0133.3111.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

oge:ChangesInAdvancesWithParent dei:LegalEntity

oge:ChangesInAdvancesWithParent

oge:OgAndE


Changes
Period End2021-06-302021-03-312020-06-302020-03-31
Value-461.8568-211.038
Percentage of ChangesInAdvancesWithParent100.0100.0100.0100.0

oge:DefinedBenefitPlanNetPeriodicBenefitCostCreditNetofUnconsolidatedAffiliates dei:LegalEntity, us-gaap:RetirementPlanType

oge:DefinedBenefitPlanNetPeriodicBenefitCostCreditNetofUnconsolidatedAffiliates

oge:OgAndE, us-gaap:OtherPensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-31
Value-0.7-0.2-0.6-0.4
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostCreditNetofUnconsolidatedAffiliates100.0100.0100.0100.0

oge:OgAndE, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.40.40.90.6
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostCreditNetofUnconsolidatedAffiliates-57.1-200.0-150.0-150.0

oge:OgAndE, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-31
Value-4.6-26.6-2.2-2.2
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostCreditNetofUnconsolidatedAffiliates657.113300.0366.7550.0

oge:DefinedBenefitPlanNetPeriodicBenefitCostCreditNetofUnconsolidatedAffiliates us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-0.7-0.2-0.7-0.70.4-0.60.30.30.90.50.30.30.2
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostCreditNetofUnconsolidatedAffiliates100.0100.00.0116.7-100.00.00.00.00.00.00.00.00.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value0.40.50.9-0.6-0.6-0.6-0.30.1-0.2-0.10.91.8
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostCreditNetofUnconsolidatedAffiliates-57.1-250.0-150.0150.00.00.00.00.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-4.7-27.2-14.0-2.22.25.24.023141.92.12.93.3
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostCreditNetofUnconsolidatedAffiliates671.413600.00.0366.7-550.00.00.00.00.00.00.00.00.0

us-gaap:PostretirementBenefitCosts


Defined
Period End2020-09-302020-06-302019-09-302019-06-30
Value0.80.90.60.6
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostCreditNetofUnconsolidatedAffiliates0.0-150.00.00.0

oge:EquityinEarningsAmortizationofBasisDifference

oge:EquityinEarningsAmortizationofBasisDifference


Equityin
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value13131359187.26.77.16.51.82.82.82.82.82.82.82.92.82.8-2.93.02.92.93.53.63.53.63.43.43.63.55.90.0
Percentage of EquityinEarningsAmortizationofBasisDifference100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

oge:EquityinEarningsAmortizationofBasisDifference dei:LegalEntity

oge:OgeEnergy


Equityin
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value14131459188.27.37.03.69.92.8
Percentage of EquityinEarningsAmortizationofBasisDifference108.9100.0102.9100.0100.0113.9109.098.655.4550.0100.0

oge:ExpectedSettlementCharge

oge:ExpectedSettlementCharge


Expected
Period End2021-06-302021-03-312020-12-31
Value-0.2183.7
Percentage of ExpectedSettlementCharge100.0100.0100.0

oge:Increasedecreaseindistributionsfromunconsolidatedaffiliates

oge:Increasedecreaseindistributionsfromunconsolidatedaffiliates


Increasedecreaseindistributionsfromunconsolidatedaffiliates
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1818181821331836353537402933323329352234162827-1.834343333443234170.00.0
Percentage of Increasedecreaseindistributionsfromunconsolidatedaffiliates100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

oge:InvestmentInGridEnhancement

oge:InvestmentInGridEnhancement


Investment
Period End2020-12-31
Value0.0
Percentage of InvestmentInGridEnhancement0.0

oge:LostRevenuesOnPlantInvestmentsForCustomers oge:OCCRuling, us-gaap:Range

oge:LostRevenuesOnPlantInvestmentsForCustomers

oge:InFavorCooperatives, srt:Maximum


Lost
Period End2021-06-302021-03-31
Value0.52.8
Percentage of LostRevenuesOnPlantInvestmentsForCustomers100.0100.0

oge:InFavorCooperatives, srt:Minimum


Lost
Period End2021-06-302021-03-31
Value0.31.8
Percentage of LostRevenuesOnPlantInvestmentsForCustomers60.064.3

oge:LostRevenuesOnPlantInvestmentsForCustomers us-gaap:Range

srt:Maximum


Lost
Period End2021-06-302021-03-31
Value2.927
Percentage of LostRevenuesOnPlantInvestmentsForCustomers580.0992.9

srt:Minimum


Lost
Period End2021-06-302021-03-31
Value2.120
Percentage of LostRevenuesOnPlantInvestmentsForCustomers420.0717.9

oge:OCCRevenueRequirement us-gaap:PublicUtilitiesRegulatoryProceeding

oge:OCCRevenueRequirement

oge:GridEnhancement


O
Period End2021-03-31
Value7000000.0
Percentage of OCCRevenueRequirement100.0

oge:OtherComprehensiveIncomeAmortizationOfDefinedBenefitPostretirementPlansNetPriorServiceCostRecognizedInNetPeriodicPostretirementCostNetOfTax

oge:OtherComprehensiveIncomeAmortizationOfDefinedBenefitPostretirementPlansNetPriorServiceCostRecognizedInNetPeriodicPostretirementCostNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-0.4-0.3-0.5-0.4-0.4-0.4-0.4-0.4-0.4-0.5-0.4-0.5-0.3-0.5-0.4-0.20.00.0-0.3-0.4-0.4-0.4-0.5-0.4-0.5-0.4-0.5-0.4-0.5-0.4-0.4-0.5-0.4-0.5-3.20.50.4-0.5-0.4-0.5-0.3100.20.00.0-0.2
Percentage of OtherComprehensiveIncomeAmortizationOfDefinedBenefitPostretirementPlansNetPriorServiceCostRecognizedInNetPeriodicPostretirementCostNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0

oge:OtherComprehensiveIncomeLossAmortizationDefinedBenefitPostretirementPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostTaxEffect

oge:OtherComprehensiveIncomeLossAmortizationDefinedBenefitPostretirementPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostTaxEffect


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-100000.0-100000.0-100000.0-200000.0-100000.0-200000.0-200000.0-200000.0-100000.0-100000.0-200000.0-100000.0-200000.0-100000.0-100000.0-200000.000-300000.0-200000.0-300000.0-200000.0-300000.0-300000.0-200000.0-300000.0-300000.0-200000.0-300000.0-300000.0-300000.0-300000.0-200000.0-300000.0-200000.0-300000.0-200000.0-300000.0-800000.0-200000.0300000.0-300000.0200000.000
Percentage of OtherComprehensiveIncomeLossAmortizationDefinedBenefitPostretirementPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostTaxEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

oge:OtherComprehensiveIncomeReclassificationOfDefinedBenefitPostretirementPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax

oge:OtherComprehensiveIncomeReclassificationOfDefinedBenefitPostretirementPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax


Other
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-100000.000100000.0100000.00100000.00006700000.0-6700000.00000-300000.0-300000.0-400000.0-200000.0-300000.0-100000.0300000.0200000.0400000.0600000.0500000.0500000.0500000.0500000.0500000.0500000.0500000.0500000.0600000.0200000.0-4100000.0300000.0300000.0600000.0
Percentage of OtherComprehensiveIncomeReclassificationOfDefinedBenefitPostretirementPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax100.00.00.0100.0100.00.0100.00.00.00.0100.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oge:OtherComprehensiveIncomeReclassificationOfDefinedBenefitPostretirementPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax

oge:OtherComprehensiveIncomeReclassificationOfDefinedBenefitPostretirementPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax


Other
Period End2021-06-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value00000000-4100000.04100000.000000200000.0200000.0200000.0200000.0100000.0100000.0200000.0100000.0400000.0300000.0300000.0300000.0-1900000.0200000.0300000.0300000.0-2400000.0200000.0100000.0500000.0-2000000.0200000.0200000.0400000.0
Percentage of OtherComprehensiveIncomeReclassificationOfDefinedBenefitPostretirementPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax0.00.00.00.00.00.00.00.0100.0100.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oge:PercentOfPrincipalAmountSubjectToOptionalTender

oge:PercentOfPrincipalAmountSubjectToOptionalTender


Percent
Period End2021-06-302021-03-312020-12-31
Value0100.00
Percentage of PercentOfPrincipalAmountSubjectToOptionalTender0.0100.00.0

oge:ProportionateUnconsolidatedAffiliateNetIncome

oge:ProportionateUnconsolidatedAffiliateNetIncome


Proportionate
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value203922-44.08.8262.4312928423322262526222813279.11917-257.2
Percentage of ProportionateUnconsolidatedAffiliateNetIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oge:RevenuesfromAlternativeRevenuePrograms

oge:RevenuesfromAlternativeRevenuePrograms


Revenuesfrom
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value129.61514111014161212101419140.00.00.00.0
Percentage of RevenuesfromAlternativeRevenuePrograms100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

oge:RevenuesfromAlternativeRevenuePrograms dei:LegalEntity

oge:OgAndE


Revenuesfrom
Period End2021-06-302021-03-312020-06-302020-03-31
Value129.61110
Percentage of RevenuesfromAlternativeRevenuePrograms100.0100.0100.0100.0

us-gaap:AssetImpairmentCharges

us-gaap:AssetImpairmentCharges


Asset
Period End2020-09-302020-06-302020-03-312019-06-302019-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value15600.0-780.00.00.00.00.00.00.00.10.00.10.21.35.00.00.01.10.0
Percentage of AssetImpairmentCharges100.00.0100.00.00.00.00.00.00.0100.00.0100.0100.0100.0100.00.00.0100.00.0

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:CommonStockDividendsPerShareDeclared


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.40250.40250.40250.40250.38751.5050.38750.38750.3650.3650.3650.3650.33250.33250.33250.33250.30250.30250.30250.30250.2750.2750.2750.2750.250.250.250.250.2250.2250.225050.208750.208750.41750.41750.39250.39250.39250.39250.3750.3750.3750.3750.36250.36250.3625
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxesAndTaxCredits

us-gaap:DeferredIncomeTaxesAndTaxCredits


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value6.88.7335828-254.72.427-1.4-0.51444127.3-202.184472019824110401435133581382219553515
Percentage of DeferredIncomeTaxesAndTaxCredits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxesAndTaxCredits dei:LegalEntity

oge:OgAndE


Deferred
Period End2021-06-302021-03-312020-06-302020-03-31
Value9.50.85.61.1
Percentage of DeferredIncomeTaxesAndTaxCredits139.79.220.0-0.4

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses dei:LegalEntity, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

oge:OgAndE, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-31
Value-700000.0-700000.0-400000.0-700000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.0

oge:OgAndE, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-31
Value-1500000.0-2000000.0-3200000.0-2800000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses214.3285.7800.0400.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0-100000.0-100000.0-100000.0-200000.0-100000.0-200000.0-100000.0-100000.0-100000.0-200000.0-100000.0-300000.0-100000.0-100000.0-100000.0-100000.0-100000.0-200000.0-200000.0-100000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses-0.014.30.00.050.014.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-700000.0-700000.0-500000.0-500000.0-400000.0-600000.0-500000.0-500000.0-400000.0-600000.0-900000.0-1000000.0-900000.0-1000000.0-700000.0-500000.0-200000.0-600000.0-700000.0-600000.0-800000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.00.00.0100.085.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-1900000.0-2800000.0-4400000.0-4300000.0-4600000.0-3800000.0-4300000.0-4400000.0-4800000.0-3800000.0-4000000.0-3900000.0-4400000.0-3900000.0-4300000.0-4400000.0-4700000.0-4000000.0-4200000.0-4100000.0-4000000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses271.4400.00.00.01150.0542.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit dei:LegalEntity, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

oge:OgAndE, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-31
Value-1200000.0-1300000.0-1600000.0-1500000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-1700000.0-1700000.0-2100000.0-2100000.0-2100000.0-2100000.0-2100000.0-2100000.0-2100000.0-2100000.0-2100000.0-2100000.0-2100000.0-2100000.0-2100000.0-1400000.000-2300000.0-2100000.0-2200000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit141.7130.80.00.0131.2140.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DefinedBenefitPlanContributionsByEmployer

us-gaap:DefinedBenefitPlanContributionsByEmployer


Defined
Period End2021-06-302021-03-312020-12-31
Value0.0400.0
Percentage of DefinedBenefitPlanContributionsByEmployer0.0100.00.0

us-gaap:DefinedBenefitPlanContributionsByEmployer dei:LegalEntity

oge:OgAndE


Defined
Period End2021-06-302021-03-31
Value0.030
Percentage of DefinedBenefitPlanContributionsByEmployer0.075.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets dei:LegalEntity, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

oge:OgAndE, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.50.40.40.4
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0

oge:OgAndE, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-31
Value6.26.16.87.1
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets1240.01525.01700.01775.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.50.50.40.50.40.50.50.50.40.50.50.50.50.50.50.60.50.60.60.60.5
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0125.00.00.0100.0125.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value8.78.49.69.49.29.49.09.58.98.71110111110101010101010
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets1740.02100.00.00.02300.02350.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DefinedBenefitPlanInterestCost dei:LegalEntity, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

oge:OgAndE, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.70.60.80.8
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0

oge:OgAndE, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-31
Value2.52.53.43.4
Percentage of DefinedBenefitPlanInterestCost357.1416.7425.0425.0

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansDefinedBenefit


Defined
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.10.00.10.00.10.10.10.10.10.00.10.10.10.10.10.00.10.10.10.1
Percentage of DefinedBenefitPlanInterestCost14.30.00.00.012.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.90.81.11.01.01.11.41.21.41.41.31.51.31.31.31.62.12.22.42.42.4
Percentage of DefinedBenefitPlanInterestCost128.6133.30.00.0125.0137.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value3.43.53.64.24.64.65.24.65.25.76.06.15.85.96.66.56.66.56.46.46.1
Percentage of DefinedBenefitPlanInterestCost485.7583.30.00.0575.0575.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost dei:LegalEntity, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

oge:OgAndE, us-gaap:OtherPensionPlansDefinedBenefit


Defined
Period End2021-06-302020-06-302020-03-31
Value0.40.20.2
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0

oge:OgAndE, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-31
Value-0.3-0.3-0.7-0.4
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost-75.00.0-350.0-200.0

oge:OgAndE, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-31
Value3.9221.71.7
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost975.00.0850.0850.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.70.22.50.80.70.40.60.70.30.30.71.00.50.30.30.30.20.30.30.49.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost175.00.00.00.0350.0200.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-0.6-0.6-1.1-0.8-0.7-0.8-0.7-0.5-0.3-0.1-0.3-0.2-0.50.82.02.40.40.50.6
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost-150.00.0-550.0-400.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value4.52711142.82.77.95.74.82415152.62.6194.14.24.04.14.03.4
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost1125.00.00.00.01400.01350.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PostretirementBenefitCosts


Defined
Period End2020-09-302020-06-302019-09-302019-06-30
Value-1.0-1.1-0.8-0.7
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost0.0-550.00.00.0

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1 dei:EntityByLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1

stpr:AR, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-30
Value-0.5-2.2-1.0-1.00.00.0-0.4-0.2-0.11.01.11.03.40.0-2.3
Percentage of DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0

stpr:OK, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-5.2-23.7-10.5-10.8-0.30.0-31.92.3-0.511-32.610
Percentage of DefinedBenefitPlanRecognizedNetGainLossDueToSettlements11040.01077.31050.01080.00.00.07975.0-1150.0500.01120.0-2963.61050.0

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1 dei:LegalEntity, us-gaap:RetirementPlanType

oge:OgAndE, us-gaap:OtherPensionPlansDefinedBenefit


Defined
Period End2021-06-30
Value-0.3
Percentage of DefinedBenefitPlanRecognizedNetGainLossDueToSettlements160.0

oge:OgAndE, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-31
Value-4.4-22.2
Percentage of DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1880.01009.1

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1 us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansDefinedBenefit


Defined
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-30
Value-0.4-2.0-0.4-0.30.0-0.1-0.40.00.0-0.4-0.60.00.00.00.00.00.10.0-8.7
Percentage of DefinedBenefitPlanRecognizedNetGainLossDueToSettlements180.0200.040.00.00.025.0200.0-0.00.0-36.4-60.00.00.00.00.0-0.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-30
Value-5.3-26.4-2.0-12.10.00.0-4.2-2.8-0.9-19.7-12.9-12.20.00.0-15.30.00.00.00.00.0
Percentage of DefinedBenefitPlanRecognizedNetGainLossDueToSettlements11060.01200.0200.01210.00.00.01050.01400.0900.0-1970.0-1172.7-1220.00.00.0-450.00.0-0.00.00.00.0

us-gaap:DefinedBenefitPlanServiceCost dei:LegalEntity, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

oge:OgAndE, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-30
Value0.00.10.1
Percentage of DefinedBenefitPlanServiceCost0.0100.0100.0

oge:OgAndE, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.72.11.92.6
Percentage of DefinedBenefitPlanServiceCost0.02100.01900.00.0

us-gaap:DefinedBenefitPlanServiceCost us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.20.10.20.20.20.20.20.10.10.10.10.10.10.10.10.00.10.10.10.00.1
Percentage of DefinedBenefitPlanServiceCost0.0100.00.00.0200.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.00.10.00.10.00.10.00.10.00.10.10.00.10.10.10.10.20.20.20.20.1
Percentage of DefinedBenefitPlanServiceCost0.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value2.63.03.43.32.83.73.23.42.83.53.83.63.44.13.93.93.54.23.94.03.5
Percentage of DefinedBenefitPlanServiceCost0.03000.00.00.02800.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DepreciationAmortizationAndAccretionNet

us-gaap:DepreciationAmortizationAndAccretionNet


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value102989910097949494848280818078767674558182807877777675747168676565749210195898781
Percentage of DepreciationAmortizationAndAccretionNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationAndAmortization

us-gaap:DepreciationAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value10298991009794949484828081807876767455818280787777767574716867656574911009390868177747477737170
Percentage of DepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationAndAmortization dei:LegalEntity

oge:OgAndE


Depreciation
Period End2021-06-302021-03-312020-06-302020-03-31
Value102989794
Percentage of DepreciationAndAmortization100.0100.0100.0100.0

us-gaap:DepreciationAndAmortization us-gaap:StatementBusinessSegments

oge:ElectricUtility


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value10298991009794949484828081807876767354808078767575747372696564626262616263625957545251555350
Percentage of DepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.198.798.498.498.397.997.797.497.497.597.297.296.895.295.795.495.683.366.762.268.369.368.970.571.269.770.071.672.071.1

us-gaap:DistributionMadeToLimitedPartnerDistributionsDeclaredPerUnit

us-gaap:DistributionMadeToLimitedPartnerDistributionsDeclaredPerUnit


Distribution
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312015-09-302015-06-302015-03-31
Value00.165250000.16525000.33050.3180.3160.30875
Percentage of DistributionMadeToLimitedPartnerDistributionsDeclaredPerUnit0.0100.00.00.00.0100.00.00.0100.0100.0100.0100.0

us-gaap:DividendsCommonStock dei:LegalEntity

us-gaap:DividendsCommonStock

oge:OgAndE


Dividends
Period End2021-06-302020-06-30
Value4575
Percentage of DividendsCommonStock100.0100.0

us-gaap:DividendsCommonStock dei:LegalEntity, us-gaap:StatementEquityComponents

oge:OgAndE, us-gaap:RetainedEarnings


Dividends
Period End2021-06-302020-06-30
Value4575
Percentage of DividendsCommonStock100.0100.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value80818077797773757272666666666060606054545455494949494444-293.0414141413838383836110-36.7-248.435105-35.3
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value80818077797773757272666666666060606054545455494949494444-293.0414141413838383836110-36.7-248.435105-35.3
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value600000.0600000.0800000.0600000.0600000.0500000.0800000.01300000.0700000.0800000.0900000.01000000.0800000.0700000.01600000.0100000.01000000.0800000.0500000.00700000.0600000.0800000.0500000.01000000.0800000.01100000.0600000.0600000.01000000.0500000.0700000.01000000.01000000.01700000.01000000.01100000.01100000.01800000.01100000.01100000.01500000.01100000.01100000.0900000.0
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense dei:LegalEntity

oge:OgAndE


Employee
Period End2021-06-302021-03-312020-06-302020-03-31
Value200000.0100000.0200000.0200000.0
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense33.316.733.340.0

us-gaap:EquityMethodInvestmentDividendsOrDistributions dei:LegalEntity

us-gaap:EquityMethodInvestmentDividendsOrDistributions

oge:EnableMidstreamPartners


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value181818181836363635353535353535353535353535353535343433334432
Percentage of EquityMethodInvestmentDividendsOrDistributions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value3353351526-746.59.138353049402933323329352234162827-71.92831404439473746180.00.00.00.0
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:IncomeLossFromEquityMethodInvestments us-gaap:StatementBusinessSegments

oge:NaturalGasMidstreamOperations


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value3353351526-746.59.138353049402933323329352234162827-71.9283140443947374618
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable dei:LegalEntity

us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable

oge:OgAndE


Increase
Period End2021-06-302021-03-312020-06-302020-03-31
Value1800000.0800000.04200000.0800000.0
Percentage of IncreaseDecreaseInAccruedIncomeTaxesPayable100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeferredFuelCosts

us-gaap:IncreaseDecreaseInDeferredFuelCosts


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-80.610411-2.4-21.6-50.3-11.8156.12240-0.511-48.2-37.2-71.93422500.50.00.0-1.6-2.1-23.3-41.3-16.02.2203526-1.71.30.4-0.80.10.7-1.8-31.410200.6-1.30.01.2-0.6
Percentage of IncreaseDecreaseInDeferredFuelCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:IncreaseDecreaseInDeferredFuelCosts dei:LegalEntity

oge:OgAndE


Increase
Period End2021-06-302021-03-312020-06-302020-03-31
Value-80.6104-21.6-50.3
Percentage of IncreaseDecreaseInDeferredFuelCosts100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInIncomeTaxesReceivable

us-gaap:IncreaseDecreaseInIncomeTaxesReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302013-12-312013-09-302012-12-312012-09-302011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-2.3-1.77.20.40.05.10.19.80.03.60.00.02949.4-232.381
Percentage of IncreaseDecreaseInIncomeTaxesReceivable100.0100.0100.0100.00.0100.0100.0100.00.0100.00.00.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherCurrentAssets

us-gaap:IncreaseDecreaseInOtherCurrentAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value3.12.510-4.514-3.6-1.7-7.9-6.511-5.82.7-13.7-8.3-0.4-21.1-1.4-4.313-4.67.710.08.3-1.311-1.3-3.14.84.7-3.74.3-7.23.34.1-3.6-4.76.76.314-3.62.7-6.2131.1
Percentage of IncreaseDecreaseInOtherCurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherCurrentAssets dei:LegalEntity

oge:OgAndE


Increase
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.9-0.62.34.5
Percentage of IncreaseDecreaseInOtherCurrentAssets61.3-24.016.0-125.0

us-gaap:IncreaseDecreaseInOtherCurrentLiabilities

us-gaap:IncreaseDecreaseInOtherCurrentLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value34-24.1-32.21330-38.8-20.51819-55.9-0.12359-9.5-11.6-13.91.9-43.134343.6-35.9-19.83429-26.4-18.51631-41.1-11.21545-56.6-18.31957-42.5-14.33.764-38.334-26.6
Percentage of IncreaseDecreaseInOtherCurrentLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherCurrentLiabilities dei:LegalEntity

oge:OgAndE


Increase
Period End2021-06-302021-03-312020-06-302020-03-31
Value30-22.426-45.5
Percentage of IncreaseDecreaseInOtherCurrentLiabilities90.092.986.0117.3

us-gaap:IncreaseDecreaseInOtherNoncurrentAssets

us-gaap:IncreaseDecreaseInOtherNoncurrentAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.35.55.55.01.3-2.6-0.51.1-0.63.8-4.15.2-6.7-0.6-1.3-1.5-0.54.02.6-11.2-4.3-2.52.1-8.2-5.20.7-2.3-9.0207.2-10.58.60.50.13.87.9-2.4-2.41.60.07.1-1.7-0.9-11.6
Percentage of IncreaseDecreaseInOtherNoncurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherNoncurrentAssets dei:LegalEntity

oge:OgAndE


Increase
Period End2021-06-302021-03-312020-06-302020-03-31
Value-3.04.42.20.1
Percentage of IncreaseDecreaseInOtherNoncurrentAssets-1000.080.0169.2-3.8

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value2.1-45.412-23.6-6.2-9.414-8.8-2.0152.4-0.8-1.50.95.3-82.55.56.20.9-25.53.62.18.52.5-2.2-0.24.85.3-6.726115.7-30.56.38.14.2-31.85.23.9-3.0-39.61.3-26.123
Percentage of IncreaseDecreaseInOtherNoncurrentLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities dei:LegalEntity

oge:OgAndE


Increase
Period End2021-06-302021-03-312020-06-302020-03-31
Value-3.5-34.8-4.5-2.5
Percentage of IncreaseDecreaseInOtherNoncurrentLiabilities-166.776.772.626.6

us-gaap:IncreaseDecreaseInOtherRegulatoryAssets

us-gaap:IncreaseDecreaseInOtherRegulatoryAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value198591032.46.4-0.3-1.022187.36.03.21.8-0.27.2-26.5
Percentage of IncreaseDecreaseInOtherRegulatoryAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherRegulatoryAssets dei:LegalEntity

oge:OgAndE


Increase
Period End2021-06-302021-03-312020-06-302020-03-31
Value198596.4-0.3
Percentage of IncreaseDecreaseInOtherRegulatoryAssets100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInRegulatoryLiabilities

us-gaap:IncreaseDecreaseInRegulatoryLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-18100000.0-16300000.0-15400000.0-21900000.0-15000000.0-11700000.0-13500000.0-11000000.0-14100000.0-7000000.0-12800000.0-5600000.0-700000.02600000.0-3100000.0-400000.0
Percentage of IncreaseDecreaseInRegulatoryLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInRegulatoryLiabilities dei:LegalEntity

oge:OgAndE


Increase
Period End2021-06-302021-03-312020-06-302020-03-31
Value-18100000.0-16300000.0-15000000.0-11700000.0
Percentage of IncreaseDecreaseInRegulatoryLiabilities100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToContingentlyIssuableShares

us-gaap:IncrementalCommonSharesAttributableToContingentlyIssuableShares


Incremental
Period End2021-06-302020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value200000.0300000.0300000.00100000.0600000.0400000.0600000.0100000.0900000.0800000.0500000.00400000.0200000.0300000.0100000.0200000.0100000.000000-100000.0900000.0800000.0700000.001300000.01100000.0500000.0100000.0400000.0300000.0500000.001300000.01300000.01400000.0100000.01600000.01400000.0
Percentage of IncrementalCommonSharesAttributableToContingentlyIssuableShares100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseShortTermBorrowings

us-gaap:InterestExpenseShortTermBorrowings


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.81.81.31.62.52.22.02.74.73.01.81.84.02.71.42.42.02.41.31.62.11.41.21.11.81.31.21.52.11.41.5-0.42.02.22.12.22.42.01.61.01.61.01.21.41.61.7
Percentage of InterestExpenseShortTermBorrowings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseShortTermBorrowings dei:LegalEntity

oge:OgAndE


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.20.81.00.8
Percentage of InterestExpenseShortTermBorrowings42.944.440.036.4

us-gaap:InvestmentsInAndAdvancesToAffiliatesAtFairValuePeriodIncreaseDecrease

us-gaap:InvestmentsInAndAdvancesToAffiliatesAtFairValuePeriodIncreaseDecrease


Investments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302014-12-312014-09-302013-12-312013-09-302012-12-312012-09-30
Value-2700000.0-600000.0-2000000.0-900000.0-600000.0-900000.0-1800000.0-2700000.0-2200000.0-1000000.0-600000.0-1400000.01100000.0-1600000.0-3300000.00-5200000.0000000000
Percentage of InvestmentsInAndAdvancesToAffiliatesAtFairValuePeriodIncreaseDecrease100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.00.00.00.00.00.00.00.0

us-gaap:LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest

us-gaap:LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest


Limited
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312014-06-302014-04-302014-03-31
Value25.525.5025.50.2550.25500.2550.2550.25500.2560.2560.2560.060.060.069
Percentage of LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest dei:LegalEntity

oge:OgeHoldings


Limited
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value025.5025.24500.2550000.25500.2560.2560.25600.2570.2570.257-0.0060.2630.2630.26300.263
Percentage of LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest0.0100.00.099.00.0100.00.00.00.0100.00.0100.0100.0100.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeFinalizationOfPensionAndNonPensionPostretirementPlanValuationTax us-gaap:RetirementPlanType

us-gaap:OtherComprehensiveIncomeFinalizationOfPensionAndNonPensionPostretirementPlanValuationTax

us-gaap:PensionPlansDefinedBenefit


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302017-09-30
Value600000.01000000.0500000.0100000.00300000.0100000.02200000.01100000.000
Percentage of OtherComprehensiveIncomeFinalizationOfPensionAndNonPensionPostretirementPlanValuationTax100.0100.0100.0100.00.0100.0100.0100.0100.00.00.0

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax us-gaap:RetirementPlanType

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value500000.0400000.0600000.0600000.0500000.0600000.0600000.0600000.0500000.0600000.0600000.0600000.0500000.0600000.0500000.0400000.000600000.0600000.0700000.0
Percentage of OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312017-12-31
Value0.20.1-7.2999999999999990.40.0-1.3-8.5-0.6
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax us-gaap:StatementEquityComponents

us-gaap:CommodityContract


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value0.20.10.40.0-1.3
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.00.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToNoncontrollingInterest

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToNoncontrollingInterest


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value100000.00100000.00-400000.0-200000.000
Percentage of OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToNoncontrollingInterest100.00.0100.00.0100.0100.00.00.0

us-gaap:OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationBeforeTax us-gaap:RetirementPlanType

us-gaap:OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationBeforeTax

us-gaap:PensionPlansDefinedBenefit


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-1200000.0-4100000.0-800000.0-1800000.0-300000.00-800000.0-1100000.0-600000.0-8800000.0-2100000.0-4200000.000-3600000.00
Percentage of OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationBeforeTax100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.00.0100.00.0

us-gaap:OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationNetOfTax

us-gaap:OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-312014-09-30
Value600000.03100000.0700000.01300000.0200000.00700000.0800000.0500000.06600000.01600000.03100000.0002200000.000005000000.0800000.03800000.00-100000.00
Percentage of OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationNetOfTax100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.00.0100.00.00.00.00.0100.0100.0100.00.0100.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-200000.0-100000.0-200000.0-400000.001300000.00600000.00000
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest100.0100.0100.0100.00.0100.00.0100.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:CommodityContract


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value0.2-1.20.20.40.0-1.90.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.00.0100.00.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax us-gaap:RetirementPlanType

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-30
Value400000.0400000.01000000.0600000.0600000.0600000.0700000.0600000.0600000.0600000.0600000.0600000.0500000.0600000.0500000.0-300000.00600000.0600000.0700000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-30
Value-1600000.0-4900000.0-2100000.0-3000000.0-1800000.0-1100000.0-1900000.0-2300000.0-1900000.0-9700000.0-3200000.0-5300000.0-1300000.0-900000.0-4100000.0-1100000.0-1200000.0-1000000.0-1200000.0-9300000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax-400.0-1225.0-210.0-500.0-300.0-183.3-271.4-383.3-316.7-1616.7-533.3-883.3-260.0-150.0-820.0366.70.0-166.7-200.0-1328.6

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax us-gaap:RetirementPlanType

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Other
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-30
Value100000.000-100000.0-100000.00-100000.0000
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax100.00.00.0100.0100.00.0100.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value400000.0800000.01300000.01200000.01500000.01100000.01100000.01200000.01300000.0900000.01100000.01100000.01300000.0900000.0600000.01100000.01200000.01000000.01000000.01200000.01100000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax400.00.00.00.0-1500.00.0-1100.00.0-1300.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-200000.0-600000.0-1000000.0-900000.0-1200000.0-800000.0-800000.0-900000.0-1000000.0-700000.0-800000.0-800000.0-1000000.0-700000.0-500000.0-600000.0-800000.0-600000.0-500000.0-800000.0-700000.0-800000.0-600000.0-700000.0-800000.0-400000.0-400000.0-500000.0-500000.0-400000.0-900000.0-900000.0-1000000.0-900000.0-700000.0-800000.0-700000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value200000.0200000.0300000.0300000.0300000.0300000.0300000.0300000.0300000.0200000.0300000.0300000.0300000.0200000.0100000.0500000.0400000.0400000.0500000.0400000.0400000.0400000.0500000.0300000.0600000.0800000.0300000.0300000.0300000.0300000.0600000.0600000.0800000.0400000.0400000.0400000.0500000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax us-gaap:RetirementPlanType

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value300000.0300000.0800000.0400000.0500000.0400000.0500000.0400000.0500000.0500000.0400000.0500000.0300000.0500000.0400000.0-300000.000300000.0400000.0400000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-800000.0-3700000.0-1700000.0-2200000.0-1400000.0-800000.0-1500000.0-1700000.0-1500000.0-7300000.0-2400000.0-3900000.0-1000000.0-700000.0-2600000.0-600000.0-800000.0-600000.0-500000.0-800000.0-5700000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax-266.7-1233.3-212.5-550.0-280.0-200.0-300.0-425.0-300.0-1460.0-600.0-780.0-333.3-140.0-650.0200.00.00.0-166.7-200.0-1425.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax us-gaap:RetirementPlanType

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value100000.0100000.0200000.0200000.0100000.0200000.0200000.0200000.0100000.0100000.0200000.0100000.0200000.0100000.0100000.0000300000.0200000.0300000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-800000.0-1200000.0-400000.0-800000.0-400000.0-300000.0-400000.0-600000.0-400000.0-2400000.0-800000.0-1400000.0-300000.0-200000.0-1500000.0-500000.0-400000.0-400000.0-500000.0-400000.0-3600000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax-800.0-1200.0-200.0-400.0-400.0-150.0-200.0-300.0-400.0-2400.0-400.0-1400.0-150.0-200.0-1500.00.00.00.0-166.7-200.0-1200.0

us-gaap:OtherCostAndExpenseOperating

us-gaap:OtherCostAndExpenseOperating


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value119109115109117120123129119119121123123118123117114124111113127113117109113111107108111112117102122148153147153147148147146138148142135123
Percentage of OtherCostAndExpenseOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherCostAndExpenseOperating dei:LegalEntity

oge:OgAndE


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value118110117121
Percentage of OtherCostAndExpenseOperating99.2100.9100.2100.8

us-gaap:OtherCostAndExpenseOperating us-gaap:StatementBusinessSegments

oge:ElectricUtility


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value118110115110117121122130120120121121123119123120116126113115124116107107115114110111115117120105107105112108114110111108110105112110101
Percentage of OtherCostAndExpenseOperating99.2100.9100.0100.4100.2100.899.2100.2100.2101.1100.298.2100.2100.899.6102.1101.5101.7102.3101.997.8102.191.498.2102.1102.3102.2102.7103.2104.2103.2103.687.771.073.173.875.074.975.073.575.276.575.477.875.0

oge:NaturalGasMidstreamOperations


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value1.60.40.50.30.30.61.50.60.30.40.30.50.30.30.8-0.80.20.1-0.2-0.17.80.21.64.90.20.80.50.30.40.00.00.01545454242
Percentage of OtherCostAndExpenseOperating1.30.40.40.30.30.51.20.50.30.30.20.40.20.30.6-0.70.20.1-0.2-0.16.10.21.44.50.20.70.50.30.40.00.00.012.930.529.628.827.9

us-gaap:AllOtherSegments


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-0.7-1.4-0.5-0.7-0.5-1.6-0.5-0.8-0.5-1.7-0.51.7-0.6-1.2-0.3-1.7-1.9-2.2-2.3-2.0-5.0-2.68.5-2.9-2.6-3.4-2.9-3.2-4.0-4.7-3.8-3.7-0.7-2.3-4.2-3.8-4.4-5.3-4.0-4.4-4.2-4.7-2.8-3.2-3.5
Percentage of OtherCostAndExpenseOperating-0.6-1.3-0.4-0.6-0.4-1.3-0.4-0.6-0.4-1.4-0.41.4-0.5-1.0-0.2-1.4-1.7-1.8-2.1-1.8-3.9-2.37.2-2.7-2.3-3.0-2.7-3.0-3.6-4.2-3.2-3.6-0.6-1.6-2.7-2.6-2.9-3.6-2.7-3.0-2.9-3.4-1.9-2.2-2.6

us-gaap:OtherNonoperatingExpense

us-gaap:OtherNonoperatingExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6.72.0115.4126.17.95.54.45.7123.43.34.44.82.03.24.16.13.35.81.75.85.32.21.03.25.82.13.36.35.24.26.55.45.63.61.99.56.43.52.39.12.75.02.4
Percentage of OtherNonoperatingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNonoperatingExpense dei:LegalEntity

oge:OgAndE


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.30.40.90.5
Percentage of OtherNonoperatingExpense4.520.07.38.2

us-gaap:OtherNonoperatingIncome

us-gaap:OtherNonoperatingIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6.33.0105.5147.45.64.65.06.77.54.14.75.41215108.87.15.77.65.67.68.95.64.96.17.23.11.46.46.24.5144.72.22.47.78.2-2.27.06.37.90.63.43.1
Percentage of OtherNonoperatingIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNonoperatingIncome dei:LegalEntity

oge:OgAndE


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.11.71.11.5
Percentage of OtherNonoperatingIncome17.556.77.820.3

us-gaap:PensionAndOtherPostretirementBenefitExpense

us-gaap:PensionAndOtherPostretirementBenefitExpense


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1.31.40.42.01.00.51.11.40.37.00.10.7-0.8-1.36.05.82.31.9
Percentage of PensionAndOtherPostretirementBenefitExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionAndOtherPostretirementBenefitExpense dei:LegalEntity

oge:OgAndE


Pension
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.20.91.00.5
Percentage of PensionAndOtherPostretirementBenefitExpense92.364.3100.0100.0

us-gaap:ProceedsFromContributedCapital

us-gaap:ProceedsFromContributedCapital


Proceeds
Period End2021-03-31
Value530
Percentage of ProceedsFromContributedCapital100.0

us-gaap:ProceedsFromContributedCapital dei:LegalEntity

oge:OgAndE


Proceeds
Period End2021-06-302021-03-31
Value0.0530
Percentage of ProceedsFromContributedCapital0.0100.0

us-gaap:ProceedsFromLoans dei:LegalEntity

us-gaap:ProceedsFromLoans

oge:OgAndE


Proceeds
Period End2021-06-302021-03-31
Value0.0470
Percentage of ProceedsFromLoans0.0100.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-30
Value-100000.0-3300000.07000000.0100000.0-100000.0-7100000.0-100000.000-10200000.00000
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.00.00.0100.00.00.00.00.0

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions


Public
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value0.70.80.40.50.50.50.60.60.61.01.93.32.83.75.45.24.13.32.82.01.80.91.51.10.80.80.70.60.50.61.10.9
Percentage of PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions dei:LegalEntity

oge:OgAndE


Public
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.70.80.50.5
Percentage of PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions100.0100.0100.0100.0

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity


Public
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.61.31.11.11.31.30.81.01.21.53.86.76.37.012118.56.95.03.93.71.62.92.21.71.51.21.10.81.12.21.71.51.21.31.31.71.94.35.95.84.44.22.62.32.3
Percentage of PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity dei:LegalEntity

oge:OgAndE


Public
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.61.31.31.3
Percentage of PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity100.0100.0100.0100.0

us-gaap:PublicUtilitiesRequestedRateIncreaseDecreaseAmount dei:EntityByLocation

us-gaap:PublicUtilitiesRequestedRateIncreaseDecreaseAmount

stpr:AR


Public
Period End2021-06-302021-03-312017-12-312017-09-302016-12-31
Value0.06.70.00.00.0
Percentage of PublicUtilitiesRequestedRateIncreaseDecreaseAmount0.0100.00.00.00.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-100000.0300000.0500000.0500000.0700000.0400000.0300000.0500000.0500000.0200000.0400000.0300000.0700000.0200000.00400000.0800000.0600000.0200000.0400000.0300000.0400000.01200000.04400000.0700000.0200000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

oge:SettlementCost


Reclassification
Period End2021-06-302021-03-312020-09-302019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312016-09-302015-12-31
Value600000.03100000.01300000.0700000.0800000.0500000.06600000.01600000.02200000.000800000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax-600.01033.3260.0233.3160.0100.03300.0400.00.00.00.066.7

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:RetirementPlanType, us-gaap:StatementEquityComponents

oge:SettlementCost, us-gaap:PensionPlansDefinedBenefit, us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLoss


Reclassification
Period End2021-06-302021-03-312020-09-302019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312016-09-30
Value600000.03100000.01300000.0700000.0800000.0500000.06600000.01600000.02200000.000
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax-600.01033.3260.0233.3160.0100.03300.0400.00.00.00.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax us-gaap:RetirementPlanType, us-gaap:StatementEquityComponents

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit, us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLoss


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-300000.0-300000.01200000.0-400000.0-500000.0-400000.0-100000.00-100000.000000000000
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax300.0-100.0240.0-80.0-71.4-100.0-33.30.0-20.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit, us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLoss


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value200000.0600000.01000000.0900000.01200000.0800000.0800000.0900000.01000000.0700000.0800000.0800000.01000000.0700000.0500000.0600000.0800000.0600000.0500000.0800000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax-200.0200.0200.0180.0171.4200.0266.7180.0200.0350.0200.0266.7142.9350.00.0150.0100.0100.0250.0200.0

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-03-312015-03-31
Value0.53.40.91.80.90.41.01.31.06.82.03.40.70.22.20.90.80.60.40.2
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RelatedPartyTransactionPurchasesFromRelatedParty dei:LegalEntity, us-gaap:AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyType, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:RelatedPartyTransactionPurchasesFromRelatedParty

oge:OgAndE, oge:NaturalGasPurchases, oge:EnableMidstreamPartners


Related
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-12.20.53.2-1.70.7-0.6-1.1-3.3-1.0-5.80.12.20.3-1.70.4-0.4-0.4-0.14.45.41.50.52.52.12.51.83.4-1.45.02.99.42.5
Percentage of RelatedPartyTransactionPurchasesFromRelatedParty100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oge:OgAndE, oge:NaturalGasTransportation, oge:EnableMidstreamPartners