0001326160--12-312023Q1false0000030371--12-310001094093--12-310000017797--12-310000037637--12-310000020290--12-310000081020--12-310000078460--12-31P3YP3YP3Y0.0084131http://fasb.org/us-gaap/2022#PrepaidExpenseAndOtherAssetsCurrenthttp://fasb.org/us-gaap/2022#OtherAssetsNoncurrenthttp://fasb.org/us-gaap/2022#OtherLiabilitiesCurrenthttp://fasb.org/us-gaap/2022#DeferredCreditsAndOtherLiabilitieshttp://fasb.org/us-gaap/2022#PrepaidExpenseAndOtherAssetsCurrenthttp://fasb.org/us-gaap/2022#OtherAssetsNoncurrenthttp://fasb.org/us-gaap/2022#OtherLiabilitiesCurrenthttp://fasb.org/us-gaap/2022#DeferredCreditsAndOtherLiabilities911119111191111911119111100013261602023-01-012023-03-310001326160duk:DukeEnergyCarolinasMember2023-01-012023-03-310001326160duk:ProgressEnergyMember2023-01-012023-03-310001326160duk:DukeEnergyProgressMember2023-01-012023-03-310001326160duk:DukeEnergyFloridaMember2023-01-012023-03-310001326160duk:DukeEnergyOhioMember2023-01-012023-03-310001326160duk:DukeEnergyIndianaMember2023-01-012023-03-310001326160duk:PiedmontNaturalGasMember2023-01-012023-03-310001326160us-gaap:CommonStockMember2023-01-012023-03-310001326160duk:JuniorSubordinatedDebentures5.625CouponDueSeptember2078Member2023-01-012023-03-310001326160duk:DepositaryShareMember2023-01-012023-03-310001326160duk:SeniorNotes310PercentDue2028Member2023-01-012023-03-310001326160duk:SeniorNotes385PercentDue2034Member2023-01-012023-03-3100013261602023-04-30xbrli:sharesiso4217:USD00013261602022-01-012022-03-310001326160us-gaap:ElectricityMember2023-01-012023-03-310001326160us-gaap:ElectricityMember2022-01-012022-03-310001326160srt:NaturalGasReservesMember2023-01-012023-03-310001326160srt:NaturalGasReservesMember2022-01-012022-03-31iso4217:USDxbrli:shares0001326160duk:DukeEnergyParentMember2023-03-3100013261602022-12-3100013261602023-03-310001326160duk:VariableInterestEntityMember2023-03-310001326160duk:VariableInterestEntityMember2022-12-310001326160us-gaap:SeriesAPreferredStockMember2023-03-310001326160us-gaap:SeriesAPreferredStockMember2022-12-310001326160us-gaap:SeriesBPreferredStockMember2022-12-310001326160us-gaap:SeriesBPreferredStockMember2023-03-3100013261602021-12-3100013261602022-03-310001326160us-gaap:PreferredStockMember2021-12-310001326160us-gaap:CommonStockMemberus-gaap:CommonStockMember2021-12-310001326160us-gaap:AdditionalPaidInCapitalMember2021-12-310001326160us-gaap:RetainedEarningsMember2021-12-310001326160duk:AccumulatedGainLossNetCashFlowHedgeAndAOCIDerivativeQualifyingAsHedgeExcludedComponentParentMember2021-12-310001326160us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2021-12-310001326160us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2021-12-310001326160us-gaap:ParentMember2021-12-310001326160us-gaap:NoncontrollingInterestMember2021-12-310001326160us-gaap:RetainedEarningsMember2022-01-012022-03-310001326160us-gaap:ParentMember2022-01-012022-03-310001326160us-gaap:NoncontrollingInterestMember2022-01-012022-03-310001326160duk:AccumulatedGainLossNetCashFlowHedgeAndAOCIDerivativeQualifyingAsHedgeExcludedComponentParentMember2022-01-012022-03-310001326160us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2022-01-012022-03-310001326160us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2022-01-012022-03-310001326160us-gaap:CommonStockMemberus-gaap:CommonStockMember2022-01-012022-03-310001326160us-gaap:AdditionalPaidInCapitalMemberus-gaap:CommonStockMember2022-01-012022-03-310001326160us-gaap:ParentMemberus-gaap:CommonStockMember2022-01-012022-03-310001326160us-gaap:CommonStockMember2022-01-012022-03-310001326160us-gaap:PreferredStockMember2022-03-310001326160us-gaap:CommonStockMemberus-gaap:CommonStockMember2022-03-310001326160us-gaap:AdditionalPaidInCapitalMember2022-03-310001326160us-gaap:RetainedEarningsMember2022-03-310001326160duk:AccumulatedGainLossNetCashFlowHedgeAndAOCIDerivativeQualifyingAsHedgeExcludedComponentParentMember2022-03-310001326160us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2022-03-310001326160us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2022-03-310001326160us-gaap:ParentMember2022-03-310001326160us-gaap:NoncontrollingInterestMember2022-03-310001326160us-gaap:PreferredStockMember2022-12-310001326160us-gaap:CommonStockMemberus-gaap:CommonStockMember2022-12-310001326160us-gaap:AdditionalPaidInCapitalMember2022-12-310001326160us-gaap:RetainedEarningsMember2022-12-310001326160duk:AccumulatedGainLossNetCashFlowHedgeAndAOCIDerivativeQualifyingAsHedgeExcludedComponentParentMember2022-12-310001326160us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2022-12-310001326160us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2022-12-310001326160us-gaap:ParentMember2022-12-310001326160us-gaap:NoncontrollingInterestMember2022-12-310001326160us-gaap:RetainedEarningsMember2023-01-012023-03-310001326160us-gaap:ParentMember2023-01-012023-03-310001326160us-gaap:NoncontrollingInterestMember2023-01-012023-03-310001326160duk:AccumulatedGainLossNetCashFlowHedgeAndAOCIDerivativeQualifyingAsHedgeExcludedComponentParentMember2023-01-012023-03-310001326160us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2023-01-012023-03-310001326160us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2023-01-012023-03-310001326160us-gaap:CommonStockMemberus-gaap:CommonStockMember2023-01-012023-03-310001326160us-gaap:AdditionalPaidInCapitalMemberus-gaap:CommonStockMember2023-01-012023-03-310001326160us-gaap:ParentMemberus-gaap:CommonStockMember2023-01-012023-03-310001326160us-gaap:AdditionalPaidInCapitalMember2023-01-012023-03-310001326160us-gaap:PreferredStockMember2023-03-310001326160us-gaap:CommonStockMemberus-gaap:CommonStockMember2023-03-310001326160us-gaap:AdditionalPaidInCapitalMember2023-03-310001326160us-gaap:RetainedEarningsMember2023-03-310001326160duk:AccumulatedGainLossNetCashFlowHedgeAndAOCIDerivativeQualifyingAsHedgeExcludedComponentParentMember2023-03-310001326160us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2023-03-310001326160us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2023-03-310001326160us-gaap:ParentMember2023-03-310001326160us-gaap:NoncontrollingInterestMember2023-03-310001326160duk:DukeEnergyCarolinasMember2022-01-012022-03-310001326160duk:DukeEnergyCarolinasMember2023-03-310001326160duk:DukeEnergyCarolinasMember2022-12-310001326160duk:DukeEnergyCarolinasMemberduk:VariableInterestEntityMember2022-12-310001326160duk:DukeEnergyCarolinasMemberduk:VariableInterestEntityMember2023-03-310001326160duk:DukeEnergyCarolinasMember2021-12-310001326160duk:DukeEnergyCarolinasMember2022-03-310001326160duk:DukeEnergyCarolinasMemberduk:MembersEquityMember2021-12-310001326160duk:DukeEnergyCarolinasMemberus-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2021-12-310001326160duk:DukeEnergyCarolinasMemberduk:MembersEquityMember2022-01-012022-03-310001326160duk:DukeEnergyCarolinasMemberduk:MembersEquityMember2022-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2022-03-310001326160duk:DukeEnergyCarolinasMemberduk:MembersEquityMember2022-12-310001326160duk:DukeEnergyCarolinasMemberus-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2022-12-310001326160duk:DukeEnergyCarolinasMemberduk:MembersEquityMember2023-01-012023-03-310001326160duk:DukeEnergyCarolinasMemberduk:MembersEquityMember2023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2023-03-310001326160duk:ProgressEnergyMember2022-01-012022-03-310001326160duk:ProgressEnergyMember2023-03-310001326160duk:ProgressEnergyMember2022-12-310001326160duk:VariableInterestEntityMemberduk:ProgressEnergyMember2023-03-310001326160duk:VariableInterestEntityMemberduk:ProgressEnergyMember2022-12-310001326160duk:ProgressEnergyMember2021-12-310001326160duk:ProgressEnergyMember2022-03-310001326160us-gaap:AdditionalPaidInCapitalMemberduk:ProgressEnergyMember2021-12-310001326160us-gaap:RetainedEarningsMemberduk:ProgressEnergyMember2021-12-310001326160us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMemberduk:ProgressEnergyMember2021-12-310001326160us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberduk:ProgressEnergyMember2021-12-310001326160us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMemberduk:ProgressEnergyMember2021-12-310001326160us-gaap:ParentMemberduk:ProgressEnergyMember2021-12-310001326160us-gaap:NoncontrollingInterestMemberduk:ProgressEnergyMember2021-12-310001326160us-gaap:RetainedEarningsMemberduk:ProgressEnergyMember2022-01-012022-03-310001326160us-gaap:ParentMemberduk:ProgressEnergyMember2022-01-012022-03-310001326160us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMemberduk:ProgressEnergyMember2022-01-012022-03-310001326160us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberduk:ProgressEnergyMember2022-01-012022-03-310001326160us-gaap:NoncontrollingInterestMemberduk:ProgressEnergyMember2022-01-012022-03-310001326160us-gaap:AdditionalPaidInCapitalMemberduk:ProgressEnergyMember2022-03-310001326160us-gaap:RetainedEarningsMemberduk:ProgressEnergyMember2022-03-310001326160us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMemberduk:ProgressEnergyMember2022-03-310001326160us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberduk:ProgressEnergyMember2022-03-310001326160us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMemberduk:ProgressEnergyMember2022-03-310001326160us-gaap:ParentMemberduk:ProgressEnergyMember2022-03-310001326160us-gaap:NoncontrollingInterestMemberduk:ProgressEnergyMember2022-03-310001326160us-gaap:AdditionalPaidInCapitalMemberduk:ProgressEnergyMember2022-12-310001326160us-gaap:RetainedEarningsMemberduk:ProgressEnergyMember2022-12-310001326160us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMemberduk:ProgressEnergyMember2022-12-310001326160us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberduk:ProgressEnergyMember2022-12-310001326160us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMemberduk:ProgressEnergyMember2022-12-310001326160us-gaap:ParentMemberduk:ProgressEnergyMember2022-12-310001326160us-gaap:RetainedEarningsMemberduk:ProgressEnergyMember2023-01-012023-03-310001326160us-gaap:ParentMemberduk:ProgressEnergyMember2023-01-012023-03-310001326160us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberduk:ProgressEnergyMember2023-01-012023-03-310001326160us-gaap:AdditionalPaidInCapitalMemberduk:ProgressEnergyMember2023-01-012023-03-310001326160us-gaap:AdditionalPaidInCapitalMemberduk:ProgressEnergyMember2023-03-310001326160us-gaap:RetainedEarningsMemberduk:ProgressEnergyMember2023-03-310001326160us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMemberduk:ProgressEnergyMember2023-03-310001326160us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberduk:ProgressEnergyMember2023-03-310001326160us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMemberduk:ProgressEnergyMember2023-03-310001326160us-gaap:ParentMemberduk:ProgressEnergyMember2023-03-310001326160duk:DukeEnergyProgressMember2022-01-012022-03-310001326160duk:DukeEnergyProgressMember2023-03-310001326160duk:DukeEnergyProgressMember2022-12-310001326160duk:DukeEnergyProgressMemberduk:VariableInterestEntityMember2023-03-310001326160duk:DukeEnergyProgressMemberduk:VariableInterestEntityMember2022-12-310001326160duk:DukeEnergyProgressMember2021-12-310001326160duk:DukeEnergyProgressMember2022-03-310001326160duk:DukeEnergyProgressMemberduk:MembersEquityMember2021-12-310001326160duk:DukeEnergyProgressMemberduk:MembersEquityMember2022-01-012022-03-310001326160duk:DukeEnergyProgressMemberduk:MembersEquityMember2022-03-310001326160duk:DukeEnergyProgressMemberduk:MembersEquityMember2022-12-310001326160duk:DukeEnergyProgressMemberduk:MembersEquityMember2023-01-012023-03-310001326160duk:DukeEnergyProgressMemberduk:MembersEquityMember2023-03-310001326160duk:DukeEnergyFloridaMember2022-01-012022-03-310001326160duk:DukeEnergyFloridaMember2023-03-310001326160duk:DukeEnergyFloridaMember2022-12-310001326160duk:VariableInterestEntityMemberduk:DukeEnergyFloridaMember2023-03-310001326160duk:VariableInterestEntityMemberduk:DukeEnergyFloridaMember2022-12-310001326160duk:DukeEnergyFloridaMember2021-12-310001326160duk:DukeEnergyFloridaMember2022-03-310001326160duk:MembersEquityMemberduk:DukeEnergyFloridaMember2021-12-310001326160us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberduk:DukeEnergyFloridaMember2021-12-310001326160duk:MembersEquityMemberduk:DukeEnergyFloridaMember2022-01-012022-03-310001326160us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberduk:DukeEnergyFloridaMember2022-01-012022-03-310001326160duk:MembersEquityMemberduk:DukeEnergyFloridaMember2022-03-310001326160us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberduk:DukeEnergyFloridaMember2022-03-310001326160duk:MembersEquityMemberduk:DukeEnergyFloridaMember2022-12-310001326160us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberduk:DukeEnergyFloridaMember2022-12-310001326160duk:MembersEquityMemberduk:DukeEnergyFloridaMember2023-01-012023-03-310001326160us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberduk:DukeEnergyFloridaMember2023-01-012023-03-310001326160duk:MembersEquityMemberduk:DukeEnergyFloridaMember2023-03-310001326160us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberduk:DukeEnergyFloridaMember2023-03-310001326160duk:DukeEnergyOhioMember2022-01-012022-03-310001326160us-gaap:ElectricityMemberduk:DukeEnergyOhioMember2023-01-012023-03-310001326160us-gaap:ElectricityMemberduk:DukeEnergyOhioMember2022-01-012022-03-310001326160srt:NaturalGasReservesMemberduk:DukeEnergyOhioMember2023-01-012023-03-310001326160srt:NaturalGasReservesMemberduk:DukeEnergyOhioMember2022-01-012022-03-310001326160duk:DukeEnergyOhioMember2023-03-310001326160duk:DukeEnergyOhioMember2022-12-310001326160duk:DukeEnergyOhioMember2021-12-310001326160duk:DukeEnergyOhioMember2022-03-310001326160duk:DukeEnergyOhioMemberus-gaap:CommonStockMember2021-12-310001326160duk:DukeEnergyOhioMemberus-gaap:AdditionalPaidInCapitalMember2021-12-310001326160us-gaap:RetainedEarningsMemberduk:DukeEnergyOhioMember2021-12-310001326160us-gaap:RetainedEarningsMemberduk:DukeEnergyOhioMember2022-01-012022-03-310001326160duk:DukeEnergyOhioMemberus-gaap:CommonStockMember2022-03-310001326160duk:DukeEnergyOhioMemberus-gaap:AdditionalPaidInCapitalMember2022-03-310001326160us-gaap:RetainedEarningsMemberduk:DukeEnergyOhioMember2022-03-310001326160duk:DukeEnergyOhioMemberus-gaap:CommonStockMember2022-12-310001326160duk:DukeEnergyOhioMemberus-gaap:AdditionalPaidInCapitalMember2022-12-310001326160us-gaap:RetainedEarningsMemberduk:DukeEnergyOhioMember2022-12-310001326160us-gaap:RetainedEarningsMemberduk:DukeEnergyOhioMember2023-01-012023-03-310001326160duk:DukeEnergyOhioMemberus-gaap:CommonStockMember2023-03-310001326160duk:DukeEnergyOhioMemberus-gaap:AdditionalPaidInCapitalMember2023-03-310001326160us-gaap:RetainedEarningsMemberduk:DukeEnergyOhioMember2023-03-310001326160duk:DukeEnergyIndianaMember2022-01-012022-03-310001326160duk:DukeEnergyIndianaMember2023-03-310001326160duk:DukeEnergyIndianaMember2022-12-310001326160duk:DukeEnergyIndianaMember2021-12-310001326160duk:DukeEnergyIndianaMember2022-03-310001326160duk:MembersEquityMemberduk:DukeEnergyIndianaMember2021-12-310001326160duk:MembersEquityMemberduk:DukeEnergyIndianaMember2022-01-012022-03-310001326160duk:MembersEquityMemberduk:DukeEnergyIndianaMember2022-03-310001326160duk:MembersEquityMemberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMemberduk:DukeEnergyIndianaMember2022-12-310001326160duk:MembersEquityMemberduk:DukeEnergyIndianaMember2023-01-012023-03-310001326160duk:MembersEquityMemberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMemberduk:DukeEnergyIndianaMember2023-03-310001326160duk:PiedmontNaturalGasMember2022-01-012022-03-310001326160duk:PiedmontNaturalGasMember2023-03-310001326160duk:PiedmontNaturalGasMember2022-12-310001326160duk:PiedmontNaturalGasMemberus-gaap:CommonStockMember2021-12-310001326160us-gaap:RetainedEarningsMemberduk:PiedmontNaturalGasMember2021-12-310001326160us-gaap:ParentMemberduk:PiedmontNaturalGasMember2021-12-310001326160duk:PiedmontNaturalGasMemberus-gaap:NoncontrollingInterestMember2021-12-310001326160duk:PiedmontNaturalGasMember2021-12-310001326160us-gaap:RetainedEarningsMemberduk:PiedmontNaturalGasMember2022-01-012022-03-310001326160us-gaap:ParentMemberduk:PiedmontNaturalGasMember2022-01-012022-03-310001326160duk:PiedmontNaturalGasMemberus-gaap:CommonStockMember2022-03-310001326160us-gaap:RetainedEarningsMemberduk:PiedmontNaturalGasMember2022-03-310001326160us-gaap:ParentMemberduk:PiedmontNaturalGasMember2022-03-310001326160duk:PiedmontNaturalGasMemberus-gaap:NoncontrollingInterestMember2022-03-310001326160duk:PiedmontNaturalGasMember2022-03-310001326160duk:PiedmontNaturalGasMemberus-gaap:CommonStockMember2022-12-310001326160us-gaap:RetainedEarningsMemberduk:PiedmontNaturalGasMember2022-12-310001326160us-gaap:ParentMemberduk:PiedmontNaturalGasMember2022-12-310001326160duk:PiedmontNaturalGasMemberus-gaap:NoncontrollingInterestMember2022-12-310001326160us-gaap:RetainedEarningsMemberduk:PiedmontNaturalGasMember2023-01-012023-03-310001326160us-gaap:ParentMemberduk:PiedmontNaturalGasMember2023-01-012023-03-310001326160duk:PiedmontNaturalGasMemberus-gaap:CommonStockMember2023-03-310001326160us-gaap:RetainedEarningsMemberduk:PiedmontNaturalGasMember2023-03-310001326160us-gaap:ParentMemberduk:PiedmontNaturalGasMember2023-03-310001326160duk:PiedmontNaturalGasMemberus-gaap:NoncontrollingInterestMember2023-03-310001326160duk:DukeEnergyParentMember2022-12-310001326160us-gaap:RenewableEnergyProgramMember2023-03-310001326160duk:DukeEnergyParentMember2021-12-310001326160duk:DukeEnergyParentMember2022-01-012022-03-310001326160duk:DukeEnergyParentMember2022-03-310001326160duk:DukeEnergyParentMember2023-01-012023-03-310001326160us-gaap:DiscontinuedOperationsHeldforsaleMemberduk:CommercialRenewablesDisposalGroupMember2022-11-012022-11-30duk:Units0001326160us-gaap:DiscontinuedOperationsHeldforsaleMemberduk:CommercialRenewablesDisposalGroupMember2023-01-012023-03-310001326160us-gaap:DiscontinuedOperationsHeldforsaleMemberduk:CommercialRenewablesDisposalGroupMember2023-03-310001326160us-gaap:DiscontinuedOperationsHeldforsaleMemberduk:CommercialRenewablesDisposalGroupMember2022-12-310001326160us-gaap:DiscontinuedOperationsHeldforsaleMemberduk:CommercialRenewablesDisposalGroupMember2022-01-012022-03-310001326160us-gaap:DiscontinuedOperationsHeldforsaleMemberduk:CommercialRenewablesDisposalGroupMember2022-01-012022-12-31duk:Segment0001326160duk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:GasUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:TotalReportableSegmentsMember2023-01-012023-03-310001326160duk:CorporateAndReconcilingItemsMember2023-01-012023-03-310001326160us-gaap:IntersegmentEliminationMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:GasUtilitiesandInfrastructureMemberus-gaap:IntersegmentEliminationMember2023-01-012023-03-310001326160duk:TotalReportableSegmentsMemberus-gaap:IntersegmentEliminationMember2023-01-012023-03-310001326160us-gaap:AllOtherSegmentsMemberus-gaap:IntersegmentEliminationMember2023-01-012023-03-310001326160us-gaap:IntersegmentEliminationMember2023-01-012023-03-310001326160us-gaap:OperatingSegmentsMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:GasUtilitiesandInfrastructureMemberus-gaap:OperatingSegmentsMember2023-01-012023-03-310001326160duk:TotalReportableSegmentsMemberus-gaap:OperatingSegmentsMember2023-01-012023-03-310001326160duk:CorporateAndEliminationsMember2023-01-012023-03-310001326160us-gaap:OperatingSegmentsMemberduk:ElectricUtilitiesandInfrastructureMember2023-03-310001326160duk:GasUtilitiesandInfrastructureMemberus-gaap:OperatingSegmentsMember2023-03-310001326160duk:TotalReportableSegmentsMemberus-gaap:OperatingSegmentsMember2023-03-310001326160us-gaap:CorporateNonSegmentMember2023-03-310001326160us-gaap:IntersegmentEliminationMember2023-03-310001326160duk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:GasUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:TotalReportableSegmentsMember2022-01-012022-03-310001326160duk:CorporateAndReconcilingItemsMember2022-01-012022-03-310001326160us-gaap:IntersegmentEliminationMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:GasUtilitiesandInfrastructureMemberus-gaap:IntersegmentEliminationMember2022-01-012022-03-310001326160duk:TotalReportableSegmentsMemberus-gaap:IntersegmentEliminationMember2022-01-012022-03-310001326160us-gaap:AllOtherSegmentsMemberus-gaap:IntersegmentEliminationMember2022-01-012022-03-310001326160us-gaap:IntersegmentEliminationMember2022-01-012022-03-310001326160us-gaap:OperatingSegmentsMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:GasUtilitiesandInfrastructureMemberus-gaap:OperatingSegmentsMember2022-01-012022-03-310001326160duk:TotalReportableSegmentsMemberus-gaap:OperatingSegmentsMember2022-01-012022-03-310001326160duk:CorporateAndEliminationsMember2022-01-012022-03-31duk:segment0001326160duk:DukeEnergyOhioMemberus-gaap:OperatingSegmentsMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:DukeEnergyOhioMemberduk:GasUtilitiesandInfrastructureMemberus-gaap:OperatingSegmentsMember2023-01-012023-03-310001326160duk:TotalReportableSegmentsMemberduk:DukeEnergyOhioMemberus-gaap:OperatingSegmentsMember2023-01-012023-03-310001326160duk:DukeEnergyOhioMemberus-gaap:CorporateNonSegmentMemberduk:CorporateAndReconcilingItemsMember2023-01-012023-03-310001326160duk:DukeEnergyOhioMemberus-gaap:OperatingSegmentsMemberduk:ElectricUtilitiesandInfrastructureMember2023-03-310001326160duk:DukeEnergyOhioMemberduk:GasUtilitiesandInfrastructureMemberus-gaap:OperatingSegmentsMember2023-03-310001326160duk:TotalReportableSegmentsMemberduk:DukeEnergyOhioMemberus-gaap:OperatingSegmentsMember2023-03-310001326160duk:DukeEnergyOhioMemberus-gaap:CorporateNonSegmentMemberduk:CorporateAndReconcilingItemsMember2023-03-310001326160duk:DukeEnergyOhioMemberus-gaap:IntersegmentEliminationMember2023-03-310001326160duk:DukeEnergyOhioMemberus-gaap:OperatingSegmentsMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:DukeEnergyOhioMemberduk:GasUtilitiesandInfrastructureMemberus-gaap:OperatingSegmentsMember2022-01-012022-03-310001326160duk:TotalReportableSegmentsMemberduk:DukeEnergyOhioMemberus-gaap:OperatingSegmentsMember2022-01-012022-03-310001326160duk:DukeEnergyOhioMemberus-gaap:CorporateNonSegmentMemberduk:CorporateAndReconcilingItemsMember2022-01-012022-03-310001326160duk:DukeEnergyCarolinasMemberduk:NuclearRegulatoryCommissionMemberduk:OconeeNuclearStationMemberduk:OconeeNuclearStationSubsequentLicenseRenewalMember2021-06-072021-06-070001326160duk:DukeEnergyCarolinasMemberduk:NuclearRegulatoryCommissionMemberduk:OconeeNuclearStationMemberduk:OconeeNuclearStationSubsequentLicenseRenewalMember2021-06-062021-06-060001326160duk:DukeEnergyCarolinasMemberduk:NuclearRegulatoryCommissionMemberduk:OconeeNuclearStationSubsequentLicenseRenewalMember2021-07-282021-07-280001326160duk:DukeEnergyCarolinasMemberduk:NuclearRegulatoryCommissionMemberduk:OconeeNuclearStationSubsequentLicenseRenewalMember2021-09-272021-09-27duk:contention0001326160duk:NuclearRegulatoryCommissionMember2023-01-012023-03-310001326160duk:PSCSCMemberduk:DukeEnergyProgressMemberduk:StormCostSecuritizationLegislationMember2022-08-050001326160duk:PSCSCMemberduk:DukeEnergyProgressMemberduk:StormCostSecuritizationLegislationMemberus-gaap:SubsequentEventMember2023-04-200001326160duk:DukeEnergyCarolinasMemberduk:NCUCMemberduk:A2023NorthCarolinaRateCaseMember2023-01-192023-01-190001326160duk:DukeEnergyCarolinasMembersrt:ScenarioForecastMemberus-gaap:SubsequentEventMemberduk:NCUCMemberduk:A2023NorthCarolinaRateCaseMember2023-01-192024-01-180001326160duk:DukeEnergyCarolinasMembersrt:ScenarioForecastMemberduk:NCUCMemberduk:A2023NorthCarolinaRateCaseMember2024-01-192025-01-180001326160duk:DukeEnergyCarolinasMembersrt:ScenarioForecastMemberduk:NCUCMemberduk:A2023NorthCarolinaRateCaseMember2025-01-192026-01-180001326160duk:DukeEnergyCarolinasMembersrt:ScenarioForecastMemberduk:NCUCMemberduk:A2023NorthCarolinaRateCaseMember2026-01-192026-12-31xbrli:pure0001326160duk:DukeEnergyProgressMemberduk:A2022NorthCarolinaRateCaseMemberduk:NCUCMember2022-10-062022-10-060001326160duk:DukeEnergyProgressMembersrt:ScenarioForecastMemberus-gaap:SubsequentEventMemberduk:A2022NorthCarolinaRateCaseMemberduk:NCUCMember2023-06-012024-05-310001326160duk:DukeEnergyProgressMembersrt:ScenarioForecastMemberduk:A2022NorthCarolinaRateCaseMemberduk:NCUCMember2024-06-012025-05-310001326160duk:DukeEnergyProgressMembersrt:ScenarioForecastMemberduk:A2022NorthCarolinaRateCaseMemberduk:NCUCMember2025-06-012026-05-310001326160duk:DukeEnergyProgressMembersrt:ScenarioForecastMemberduk:A2022NorthCarolinaRateCaseMemberduk:NCUCMember2025-06-012025-12-310001326160duk:DukeEnergyProgressMembersrt:ScenarioForecastMemberduk:A2022NorthCarolinaRateCaseMemberduk:NCUCMember2026-06-012027-05-310001326160duk:DukeEnergyProgressMembersrt:ScenarioForecastMemberus-gaap:SubsequentEventMemberduk:A2022NorthCarolinaRateCaseMemberduk:NCUCMember2023-04-012024-03-310001326160duk:DukeEnergyProgressMembersrt:ScenarioForecastMemberduk:A2022NorthCarolinaRateCaseMemberduk:NCUCMember2024-04-012025-03-310001326160duk:DukeEnergyProgressMembersrt:ScenarioForecastMemberduk:A2022NorthCarolinaRateCaseMemberduk:NCUCMember2025-04-012026-03-310001326160duk:DukeEnergyProgressMembersrt:ScenarioForecastMemberduk:A2022NorthCarolinaRateCaseMemberduk:NCUCMember2025-04-012025-12-310001326160duk:PSCSCMemberduk:DukeEnergyProgressMemberduk:A2022SouthCarolinaRateCaseMember2022-09-012022-09-010001326160duk:PSCSCMemberduk:A2022SouthCarolinaRateCaseRetailRateCaseMemberduk:DukeEnergyProgressMember2022-09-012022-09-010001326160duk:PSCSCMemberduk:A2022SouthCarolinaRateCaseRetailRateCaseMemberduk:DukeEnergyProgressMemberus-gaap:EquityMember2022-09-012022-09-010001326160duk:PSCSCMemberduk:A2022SouthCarolinaRateCaseRetailRateCaseMemberduk:DukeEnergyProgressMemberus-gaap:DebtMember2022-09-012022-09-010001326160duk:PSCSCMemberduk:DukeEnergyProgressMemberduk:A2022SouthCarolinaRateCaseCoalAshBasinClosureCostsMember2022-09-012022-09-010001326160duk:A2021SettlementMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2023-01-012023-03-310001326160srt:ScenarioForecastMemberduk:A2021SettlementMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2023-01-012023-12-310001326160srt:ScenarioForecastMemberduk:A2021SettlementMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2034-01-012034-12-310001326160srt:MinimumMemberduk:A2021SettlementMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2021-05-042021-05-040001326160srt:MaximumMemberduk:A2021SettlementMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2021-05-042021-05-040001326160srt:WeightedAverageMemberduk:A2021SettlementMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2021-05-042021-05-040001326160duk:A2021SettlementMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2021-05-042021-05-040001326160us-gaap:USTreasurySecuritiesMemberduk:A2021SettlementMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2021-05-042021-05-040001326160us-gaap:USTreasurySecuritiesMembersrt:MinimumMemberduk:A2021SettlementMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2021-05-042021-05-040001326160us-gaap:USTreasurySecuritiesMembersrt:MaximumMemberduk:A2021SettlementMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2021-05-042021-05-040001326160duk:A2021SettlementMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2021-05-040001326160duk:A2021SettlementMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2022-06-152022-06-150001326160duk:A2021SettlementMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2022-06-150001326160duk:A2021SettlementMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2023-03-310001326160srt:ScenarioForecastMemberduk:A2021SettlementMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2023-12-310001326160duk:A2021SettlementMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2022-10-172022-10-170001326160duk:DukeEnergyFloridaMemberduk:FPSCMember2020-07-01duk:plantutr:MW0001326160duk:SolarPlantMemberduk:DukeEnergyFloridaMember2020-07-012020-07-010001326160duk:DukeEnergyFloridaMemberduk:FPSCMemberduk:StormProtectionPlanMember2022-04-110001326160duk:DukeEnergyFloridaMemberduk:FPSCMemberduk:StormProtectionPlanMember2022-10-042022-10-040001326160us-gaap:NaturalDisastersAndOtherCasualtyEventsMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2022-09-28duk:outage0001326160us-gaap:NaturalDisastersAndOtherCasualtyEventsMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2023-03-310001326160us-gaap:NaturalDisastersAndOtherCasualtyEventsMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2022-09-270001326160us-gaap:NaturalDisastersAndOtherCasualtyEventsMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2022-12-310001326160us-gaap:NaturalDisastersAndOtherCasualtyEventsMemberduk:DukeEnergyFloridaMemberduk:FPSCMember2023-01-012023-03-310001326160duk:DukeEnergyOhioElectricBaseRateCaseMemberduk:DukeEnergyOhioMemberduk:PublicUtilitiesCommissionOfOhioMember2021-10-012021-10-010001326160duk:DukeEnergyOhioElectricBaseRateCaseMemberduk:DukeEnergyOhioMemberduk:PublicUtilitiesCommissionOfOhioMember2022-09-192022-09-190001326160duk:DukeEnergyOhioMemberduk:PublicUtilitiesCommissionOfOhioMemberduk:DukeEnergyOhioGasBaseRateCaseMember2023-01-012023-03-310001326160duk:DukeEnergyOhioMembersrt:MinimumMemberduk:PublicUtilitiesCommissionOfOhioMemberduk:DukeEnergyOhioGasBaseRateCaseMember2023-01-012023-03-310001326160srt:MaximumMemberduk:DukeEnergyOhioMemberduk:PublicUtilitiesCommissionOfOhioMemberduk:DukeEnergyOhioGasBaseRateCaseMember2023-01-012023-03-310001326160duk:DukeEnergyOhioMemberduk:PublicUtilitiesCommissionOfOhioMemberus-gaap:SubsequentEventMemberduk:DukeEnergyOhioGasBaseRateCaseMember2023-04-282023-04-280001326160srt:MaximumMemberduk:DukeEnergyOhioMemberduk:PublicUtilitiesCommissionOfOhioMemberus-gaap:SubsequentEventMemberduk:DukeEnergyOhioGasBaseRateCaseMember2023-04-282023-04-280001326160duk:DukeEnergyKentuckyElectricBaseRateCaseMemberduk:KPSCMemberduk:DukeEnergyOhioMember2022-12-012022-12-010001326160duk:DukeEnergyKentuckyElectricBaseRateCaseMemberduk:KPSCMemberduk:DukeEnergyOhioMember2023-01-012023-03-310001326160duk:DukeEnergyKentuckyElectricBaseRateCaseMemberduk:KPSCMemberduk:DukeEnergyOhioMember2023-03-102023-03-100001326160duk:DukeEnergyIndianaMemberduk:IndianaUtilityRegulatoryCommissionMemberduk:IndianaRateCase2019Member2019-07-022019-07-020001326160duk:DukeEnergyIndianaMemberduk:IndianaUtilityRegulatoryCommissionMemberduk:IndianaRateCase2019Member2019-12-042019-12-040001326160duk:DukeEnergyIndianaMemberduk:IndianaUtilityRegulatoryCommissionMemberduk:IndianaRateCase2019Member2020-06-292020-06-290001326160duk:DukeEnergyIndianaMemberduk:IndianaUtilityRegulatoryCommissionMemberduk:IndianaRateCase2019Member2020-12-310001326160duk:DukeEnergyIndianaMemberduk:IndianaUtilityRegulatoryCommissionMemberduk:IndianaRateCase2019Member2020-06-290001326160duk:DukeEnergyIndianaMemberduk:IndianaUtilityRegulatoryCommissionMemberduk:IndianaRateCase2019Member2021-07-282021-07-280001326160duk:DukeEnergyIndianaMemberduk:IndianaUtilityRegulatoryCommissionMemberduk:IndianaRateCase2019Member2022-01-012022-03-310001326160duk:DukeEnergyIndianaMemberduk:IndianaUtilityRegulatoryCommissionMemberduk:IndianaRateCase2019Member2023-02-030001326160duk:IndianaCoalAshRecoveryMemberduk:DukeEnergyIndianaMemberduk:IndianaUtilityRegulatoryCommissionMember2022-01-012022-12-310001326160duk:TDSIG20Memberduk:DukeEnergyIndianaMemberduk:IndianaUtilityRegulatoryCommissionMember2022-06-150001326160duk:TennesseeAnnualReviewMechanismMemberduk:PiedmontNaturalGasMemberduk:TPUCMember2022-10-102022-10-100001326160us-gaap:PendingLitigationMemberduk:TexasStormUriTortLitigationMember2023-03-31duk:case0001326160duk:RubenVillanoEtAlVDukeEnergyCarolinasLLCMemberus-gaap:PendingLitigationMemberduk:DukeEnergyCarolinasMember2021-06-162021-06-16duk:people0001326160duk:DukeEnergyCarolinasMemberus-gaap:AsbestosIssueMember2023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:AsbestosIssueMember2022-12-310001326160us-gaap:AccountingStandardsUpdate201613Memberduk:DukeEnergyandDukeEnergyCarolinasMember2023-03-310001326160us-gaap:AccountingStandardsUpdate201613Memberduk:DukeEnergyandDukeEnergyCarolinasMember2022-12-310001326160duk:A495January2023NotesDueJanuary2033Member2023-03-310001326160duk:A495January2023NotesDueJanuary2033Memberduk:DukeEnergyParentMember2023-03-310001326160duk:DukeEnergyCarolinasMemberduk:A495January2023NotesDueJanuary2033Member2023-03-310001326160duk:DukeEnergyProgressMemberduk:A495January2023NotesDueJanuary2033Member2023-03-310001326160duk:A495January2023NotesDueJanuary2033Memberduk:DukeEnergyIndianaMember2023-03-310001326160duk:A5350January2023NotesDueJanuary2053Member2023-03-310001326160duk:A5350January2023NotesDueJanuary2053Memberduk:DukeEnergyParentMember2023-03-310001326160duk:DukeEnergyCarolinasMemberduk:A5350January2023NotesDueJanuary2053Member2023-03-310001326160duk:DukeEnergyProgressMemberduk:A5350January2023NotesDueJanuary2053Member2023-03-310001326160duk:A5350January2023NotesDueJanuary2053Memberduk:DukeEnergyIndianaMember2023-03-310001326160duk:A5250March2023NotesDueApril2033Member2023-03-310001326160duk:A5250March2023NotesDueApril2033Memberduk:DukeEnergyParentMember2023-03-310001326160duk:DukeEnergyCarolinasMemberduk:A5250March2023NotesDueApril2033Member2023-03-310001326160duk:DukeEnergyProgressMemberduk:A5250March2023NotesDueApril2033Member2023-03-310001326160duk:A5250March2023NotesDueApril2033Memberduk:DukeEnergyIndianaMember2023-03-310001326160duk:A5350March2023NotesDueApril2053Member2023-03-310001326160duk:DukeEnergyParentMemberduk:A5350March2023NotesDueApril2053Member2023-03-310001326160duk:DukeEnergyCarolinasMemberduk:A5350March2023NotesDueApril2053Member2023-03-310001326160duk:DukeEnergyProgressMemberduk:A5350March2023NotesDueApril2053Member2023-03-310001326160duk:A5350March2023NotesDueApril2053Memberduk:DukeEnergyIndianaMember2023-03-310001326160duk:A5250March2023NotesDueApril20332Member2023-03-310001326160duk:DukeEnergyParentMemberduk:A5250March2023NotesDueApril20332Member2023-03-310001326160duk:DukeEnergyCarolinasMemberduk:A5250March2023NotesDueApril20332Member2023-03-310001326160duk:DukeEnergyProgressMemberduk:A5250March2023NotesDueApril20332Member2023-03-310001326160duk:DukeEnergyOhioMemberduk:A5250March2023NotesDueApril20332Member2023-03-310001326160duk:A5250March2023NotesDueApril20332Memberduk:DukeEnergyIndianaMember2023-03-310001326160duk:A5650March2023NotesDueApril2053Member2023-03-310001326160duk:A5650March2023NotesDueApril2053Memberduk:DukeEnergyParentMember2023-03-310001326160duk:DukeEnergyCarolinasMemberduk:A5650March2023NotesDueApril2053Member2023-03-310001326160duk:DukeEnergyProgressMemberduk:A5650March2023NotesDueApril2053Member2023-03-310001326160duk:DukeEnergyOhioMemberduk:A5650March2023NotesDueApril2053Member2023-03-310001326160duk:A5650March2023NotesDueApril2053Memberduk:DukeEnergyIndianaMember2023-03-310001326160duk:A5400March2023NotesDueApril2053Member2023-03-310001326160duk:DukeEnergyParentMemberduk:A5400March2023NotesDueApril2053Member2023-03-310001326160duk:DukeEnergyCarolinasMemberduk:A5400March2023NotesDueApril2053Member2023-03-310001326160duk:DukeEnergyProgressMemberduk:A5400March2023NotesDueApril2053Member2023-03-310001326160duk:A5400March2023NotesDueApril2053Memberduk:DukeEnergyIndianaMember2023-03-310001326160duk:MaturitiesDueMarch2023Member2023-01-012023-03-310001326160duk:MaturitiesDueSeptember2023Member2023-01-012023-03-310001326160duk:MaturitiesDueOctober2023Member2023-01-012023-03-310001326160duk:MaturitiesDueOctober20232Member2023-01-012023-03-310001326160duk:DukeEnergyParentMemberus-gaap:SubsequentEventMemberduk:A425ConvertibleSeniorNotesDueApril2026Member2023-04-300001326160us-gaap:SubsequentEventMemberduk:A425ConvertibleSeniorNotesDueApril2026Member2023-04-300001326160duk:DukeEnergyParentMemberus-gaap:SubsequentEventMemberduk:A425ConvertibleSeniorNotesDueApril2026Member2023-04-012023-04-300001326160duk:DukeEnergyParentMemberduk:DebtMaturingApril20232875CouponMemberus-gaap:UnsecuredDebtMember2023-03-310001326160duk:DukeEnergyParentMemberus-gaap:UnsecuredDebtMemberduk:DebtMaturingJune20232048CouponMember2023-03-310001326160duk:DukeEnergyParentMemberduk:DebtMaturingOctober20233950CouponMemberus-gaap:UnsecuredDebtMember2023-03-310001326160duk:DebtMaturingMarch20245385CouponMemberduk:DukeEnergyParentMemberus-gaap:UnsecuredDebtMember2023-03-310001326160duk:DebtMaturingOctober20234879CouponMemberduk:DukeEnergyOhioMemberus-gaap:UnsecuredDebtMember2023-03-310001326160duk:DebtMaturingSeptember20233375CouponMemberduk:DukeEnergyProgressMemberus-gaap:FirstMortgageMember2023-03-310001326160duk:DukeEnergyOhioMemberduk:DebtMaturingSeptember20233800CouponMemberus-gaap:FirstMortgageMember2023-03-310001326160us-gaap:OtherDebtSecuritiesMember2023-03-310001326160us-gaap:RevolvingCreditFacilityMember2023-03-310001326160srt:ParentCompanyMemberduk:DukeEnergyParentMemberus-gaap:RevolvingCreditFacilityMember2023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:RevolvingCreditFacilityMember2023-03-310001326160duk:DukeEnergyProgressMemberus-gaap:RevolvingCreditFacilityMember2023-03-310001326160us-gaap:RevolvingCreditFacilityMemberduk:DukeEnergyFloridaMember2023-03-310001326160duk:DukeEnergyOhioMemberus-gaap:RevolvingCreditFacilityMember2023-03-310001326160us-gaap:RevolvingCreditFacilityMemberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:RevolvingCreditFacilityMemberduk:PiedmontNaturalGasMember2023-03-310001326160duk:ProceedsLoanedToSubsidiaryRegistrantsMembersrt:ParentCompanyMemberus-gaap:RevolvingCreditFacilityMember2023-03-310001326160duk:DukeEnergyParentMemberus-gaap:RevolvingCreditFacilityMemberus-gaap:LineOfCreditMember2022-03-090001326160duk:DukeEnergyParentMemberus-gaap:RevolvingCreditFacilityMemberus-gaap:LineOfCreditMember2022-03-092022-03-090001326160duk:June2017ThreeYearRevolvingCreditFacilityMember2022-03-092022-03-090001326160duk:ElectricUtilitiesandInfrastructureMember2023-03-310001326160duk:ElectricUtilitiesandInfrastructureMember2022-12-310001326160duk:GasUtilitiesandInfrastructureMember2022-12-310001326160duk:GasUtilitiesandInfrastructureMember2023-03-310001326160duk:DukeEnergyOhioMemberduk:ElectricUtilitiesandInfrastructureMember2022-12-310001326160duk:DukeEnergyOhioMemberduk:ElectricUtilitiesandInfrastructureMember2023-03-310001326160duk:DukeEnergyOhioMemberduk:GasUtilitiesandInfrastructureMember2023-03-310001326160duk:DukeEnergyOhioMemberduk:GasUtilitiesandInfrastructureMember2022-12-310001326160duk:ProgressEnergyMemberduk:ElectricUtilitiesandInfrastructureMember2023-03-310001326160duk:ProgressEnergyMemberduk:ElectricUtilitiesandInfrastructureMember2022-12-310001326160duk:GasUtilitiesandInfrastructureMemberduk:PiedmontNaturalGasMember2023-03-310001326160duk:GasUtilitiesandInfrastructureMemberduk:PiedmontNaturalGasMember2022-12-310001326160duk:CorporateGovernanceAndSharedServiceExpensesMemberduk:DukeEnergyCarolinasMembersrt:AffiliatedEntityMember2023-01-012023-03-310001326160duk:CorporateGovernanceAndSharedServiceExpensesMemberduk:DukeEnergyCarolinasMembersrt:AffiliatedEntityMember2022-01-012022-03-310001326160duk:DukeEnergyCarolinasMemberduk:IndemnificationCoveragesMembersrt:AffiliatedEntityMember2023-01-012023-03-310001326160duk:DukeEnergyCarolinasMemberduk:IndemnificationCoveragesMembersrt:AffiliatedEntityMember2022-01-012022-03-310001326160duk:DukeEnergyCarolinasMemberduk:DukeEnergyProgressMemberduk:JointDispatchAgreementMember2023-01-012023-03-310001326160duk:DukeEnergyCarolinasMemberduk:DukeEnergyProgressMemberduk:JointDispatchAgreementMember2022-01-012022-03-310001326160duk:DukeEnergyCarolinasMemberduk:IntercompanyNaturalGasTransactionsMembersrt:AffiliatedEntityMember2023-01-012023-03-310001326160duk:DukeEnergyCarolinasMemberduk:IntercompanyNaturalGasTransactionsMembersrt:AffiliatedEntityMember2022-01-012022-03-310001326160duk:CorporateGovernanceAndSharedServiceExpensesMemberduk:ProgressEnergyMembersrt:AffiliatedEntityMember2023-01-012023-03-310001326160duk:CorporateGovernanceAndSharedServiceExpensesMemberduk:ProgressEnergyMembersrt:AffiliatedEntityMember2022-01-012022-03-310001326160duk:IndemnificationCoveragesMemberduk:ProgressEnergyMembersrt:AffiliatedEntityMember2023-01-012023-03-310001326160duk:IndemnificationCoveragesMemberduk:ProgressEnergyMembersrt:AffiliatedEntityMember2022-01-012022-03-310001326160duk:DukeEnergyCarolinasMemberduk:JointDispatchAgreementMemberduk:ProgressEnergyMember2023-01-012023-03-310001326160duk:DukeEnergyCarolinasMemberduk:JointDispatchAgreementMemberduk:ProgressEnergyMember2022-01-012022-03-310001326160duk:IntercompanyNaturalGasTransactionsMemberduk:ProgressEnergyMembersrt:AffiliatedEntityMember2023-01-012023-03-310001326160duk:IntercompanyNaturalGasTransactionsMemberduk:ProgressEnergyMembersrt:AffiliatedEntityMember2022-01-012022-03-310001326160duk:CorporateGovernanceAndSharedServiceExpensesMemberduk:DukeEnergyProgressMembersrt:AffiliatedEntityMember2023-01-012023-03-310001326160duk:CorporateGovernanceAndSharedServiceExpensesMemberduk:DukeEnergyProgressMembersrt:AffiliatedEntityMember2022-01-012022-03-310001326160duk:DukeEnergyProgressMemberduk:IndemnificationCoveragesMembersrt:AffiliatedEntityMember2023-01-012023-03-310001326160duk:DukeEnergyProgressMemberduk:IndemnificationCoveragesMembersrt:AffiliatedEntityMember2022-01-012022-03-310001326160duk:DukeEnergyProgressMemberduk:DukeEnergyCarolinasMemberduk:JointDispatchAgreementMember2023-01-012023-03-310001326160duk:DukeEnergyProgressMemberduk:DukeEnergyCarolinasMemberduk:JointDispatchAgreementMember2022-01-012022-03-310001326160duk:DukeEnergyProgressMemberduk:IntercompanyNaturalGasTransactionsMembersrt:AffiliatedEntityMember2023-01-012023-03-310001326160duk:DukeEnergyProgressMemberduk:IntercompanyNaturalGasTransactionsMembersrt:AffiliatedEntityMember2022-01-012022-03-310001326160duk:CorporateGovernanceAndSharedServiceExpensesMemberduk:DukeEnergyFloridaMembersrt:AffiliatedEntityMember2023-01-012023-03-310001326160duk:CorporateGovernanceAndSharedServiceExpensesMemberduk:DukeEnergyFloridaMembersrt:AffiliatedEntityMember2022-01-012022-03-310001326160duk:IndemnificationCoveragesMemberduk:DukeEnergyFloridaMembersrt:AffiliatedEntityMember2023-01-012023-03-310001326160duk:IndemnificationCoveragesMemberduk:DukeEnergyFloridaMembersrt:AffiliatedEntityMember2022-01-012022-03-310001326160duk:CorporateGovernanceAndSharedServiceExpensesMemberduk:DukeEnergyOhioMembersrt:AffiliatedEntityMember2023-01-012023-03-310001326160duk:CorporateGovernanceAndSharedServiceExpensesMemberduk:DukeEnergyOhioMembersrt:AffiliatedEntityMember2022-01-012022-03-310001326160duk:DukeEnergyOhioMemberduk:IndemnificationCoveragesMembersrt:AffiliatedEntityMember2023-01-012023-03-310001326160duk:DukeEnergyOhioMemberduk:IndemnificationCoveragesMembersrt:AffiliatedEntityMember2022-01-012022-03-310001326160duk:CorporateGovernanceAndSharedServiceExpensesMemberduk:DukeEnergyIndianaMembersrt:AffiliatedEntityMember2023-01-012023-03-310001326160duk:CorporateGovernanceAndSharedServiceExpensesMemberduk:DukeEnergyIndianaMembersrt:AffiliatedEntityMember2022-01-012022-03-310001326160duk:IndemnificationCoveragesMemberduk:DukeEnergyIndianaMembersrt:AffiliatedEntityMember2023-01-012023-03-310001326160duk:IndemnificationCoveragesMemberduk:DukeEnergyIndianaMembersrt:AffiliatedEntityMember2022-01-012022-03-310001326160duk:CorporateGovernanceAndSharedServiceExpensesMemberduk:PiedmontNaturalGasMembersrt:AffiliatedEntityMember2023-01-012023-03-310001326160duk:CorporateGovernanceAndSharedServiceExpensesMemberduk:PiedmontNaturalGasMembersrt:AffiliatedEntityMember2022-01-012022-03-310001326160duk:IndemnificationCoveragesMemberduk:PiedmontNaturalGasMembersrt:AffiliatedEntityMember2023-01-012023-03-310001326160duk:IndemnificationCoveragesMemberduk:PiedmontNaturalGasMembersrt:AffiliatedEntityMember2022-01-012022-03-310001326160duk:IntercompanyNaturalGasTransactionsMemberduk:PiedmontNaturalGasMembersrt:AffiliatedEntityMember2023-01-012023-03-310001326160duk:IntercompanyNaturalGasTransactionsMemberduk:PiedmontNaturalGasMembersrt:AffiliatedEntityMember2022-01-012022-03-310001326160duk:NaturalGasStorageAndTransportationCostsMemberduk:PiedmontNaturalGasMembersrt:AffiliatedEntityMember2023-01-012023-03-310001326160duk:NaturalGasStorageAndTransportationCostsMemberduk:PiedmontNaturalGasMembersrt:AffiliatedEntityMember2022-01-012022-03-310001326160duk:ProgressEnergyMembersrt:AffiliatedEntityMember2023-03-310001326160duk:DukeEnergyProgressMembersrt:AffiliatedEntityMember2023-03-310001326160duk:DukeEnergyFloridaMembersrt:AffiliatedEntityMember2023-03-310001326160duk:DukeEnergyOhioMembersrt:AffiliatedEntityMember2023-03-310001326160duk:DukeEnergyIndianaMembersrt:AffiliatedEntityMember2023-03-310001326160duk:PiedmontNaturalGasMembersrt:AffiliatedEntityMember2023-03-310001326160duk:ProgressEnergyMembersrt:AffiliatedEntityMember2022-12-310001326160duk:DukeEnergyProgressMembersrt:AffiliatedEntityMember2022-12-310001326160duk:DukeEnergyFloridaMembersrt:AffiliatedEntityMember2022-12-310001326160duk:DukeEnergyCarolinasMembersrt:AffiliatedEntityMember2022-12-310001326160duk:DukeEnergyOhioMembersrt:AffiliatedEntityMember2022-12-310001326160duk:DukeEnergyIndianaMembersrt:AffiliatedEntityMember2022-12-310001326160duk:PiedmontNaturalGasMembersrt:AffiliatedEntityMember2022-12-310001326160us-gaap:InterestRateContractMemberus-gaap:DesignatedAsHedgingInstrumentMember2023-03-310001326160us-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2023-03-310001326160us-gaap:InterestRateContractMemberus-gaap:NondesignatedMemberduk:ProgressEnergyMember2023-03-310001326160duk:DukeEnergyProgressMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2023-03-310001326160us-gaap:InterestRateContractMemberus-gaap:NondesignatedMemberduk:DukeEnergyFloridaMember2023-03-310001326160us-gaap:InterestRateContractMemberus-gaap:NondesignatedMemberduk:DukeEnergyIndianaMember2023-03-310001326160duk:DukeEnergyOhioMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2023-03-310001326160us-gaap:InterestRateContractMember2023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:InterestRateContractMember2023-03-310001326160us-gaap:InterestRateContractMemberduk:ProgressEnergyMember2023-03-310001326160duk:DukeEnergyProgressMemberus-gaap:InterestRateContractMember2023-03-310001326160us-gaap:InterestRateContractMemberduk:DukeEnergyFloridaMember2023-03-310001326160us-gaap:InterestRateContractMemberduk:DukeEnergyIndianaMember2023-03-310001326160duk:DukeEnergyOhioMemberus-gaap:InterestRateContractMember2023-03-310001326160us-gaap:InterestRateContractMemberus-gaap:DesignatedAsHedgingInstrumentMember2022-12-310001326160us-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2022-12-310001326160duk:DukeEnergyCarolinasMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2022-12-310001326160us-gaap:InterestRateContractMemberus-gaap:NondesignatedMemberduk:ProgressEnergyMember2022-12-310001326160duk:DukeEnergyProgressMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2022-12-310001326160us-gaap:InterestRateContractMemberus-gaap:NondesignatedMemberduk:DukeEnergyFloridaMember2022-12-310001326160us-gaap:InterestRateContractMemberus-gaap:NondesignatedMemberduk:DukeEnergyIndianaMember2022-12-310001326160duk:DukeEnergyOhioMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2022-12-310001326160us-gaap:InterestRateContractMember2022-12-310001326160duk:DukeEnergyCarolinasMemberus-gaap:InterestRateContractMember2022-12-310001326160us-gaap:InterestRateContractMemberduk:ProgressEnergyMember2022-12-310001326160duk:DukeEnergyProgressMemberus-gaap:InterestRateContractMember2022-12-310001326160us-gaap:InterestRateContractMemberduk:DukeEnergyFloridaMember2022-12-310001326160us-gaap:InterestRateContractMemberduk:DukeEnergyIndianaMember2022-12-310001326160duk:DukeEnergyOhioMemberus-gaap:InterestRateContractMember2022-12-310001326160us-gaap:ElectricTransmissionMemberus-gaap:PriceRiskDerivativeMember2023-01-012023-03-31utr:GWh0001326160duk:DukeEnergyOhioMemberus-gaap:ElectricTransmissionMemberus-gaap:PriceRiskDerivativeMember2023-01-012023-03-310001326160us-gaap:ElectricTransmissionMemberus-gaap:PriceRiskDerivativeMemberduk:DukeEnergyIndianaMember2023-01-012023-03-310001326160us-gaap:GasDistributionMemberus-gaap:PriceRiskDerivativeMember2023-01-012023-03-31utr:Mcf0001326160us-gaap:GasDistributionMemberduk:DukeEnergyCarolinasMemberus-gaap:PriceRiskDerivativeMember2023-01-012023-03-310001326160us-gaap:GasDistributionMemberus-gaap:PriceRiskDerivativeMemberduk:ProgressEnergyMember2023-01-012023-03-310001326160us-gaap:GasDistributionMemberduk:DukeEnergyProgressMemberus-gaap:PriceRiskDerivativeMember2023-01-012023-03-310001326160us-gaap:GasDistributionMemberus-gaap:PriceRiskDerivativeMemberduk:DukeEnergyIndianaMember2023-01-012023-03-310001326160us-gaap:GasDistributionMemberus-gaap:PriceRiskDerivativeMemberduk:PiedmontNaturalGasMember2023-01-012023-03-310001326160us-gaap:ElectricTransmissionMemberus-gaap:PriceRiskDerivativeMember2022-01-012022-12-310001326160duk:DukeEnergyOhioMemberus-gaap:ElectricTransmissionMemberus-gaap:PriceRiskDerivativeMember2022-01-012022-12-310001326160us-gaap:ElectricTransmissionMemberus-gaap:PriceRiskDerivativeMemberduk:DukeEnergyIndianaMember2022-01-012022-12-310001326160us-gaap:GasDistributionMemberus-gaap:PriceRiskDerivativeMember2022-01-012022-12-310001326160us-gaap:GasDistributionMemberduk:DukeEnergyCarolinasMemberus-gaap:PriceRiskDerivativeMember2022-01-012022-12-310001326160us-gaap:GasDistributionMemberus-gaap:PriceRiskDerivativeMemberduk:ProgressEnergyMember2022-01-012022-12-310001326160us-gaap:GasDistributionMemberduk:DukeEnergyProgressMemberus-gaap:PriceRiskDerivativeMember2022-01-012022-12-310001326160us-gaap:GasDistributionMemberus-gaap:PriceRiskDerivativeMemberduk:DukeEnergyIndianaMember2022-01-012022-12-310001326160us-gaap:GasDistributionMemberus-gaap:PriceRiskDerivativeMemberduk:PiedmontNaturalGasMember2022-01-012022-12-310001326160duk:SeniorNotes310DueJune2028Memberus-gaap:ForeignExchangeContractMemberus-gaap:DesignatedAsHedgingInstrumentMember2023-03-31iso4217:EUR0001326160duk:SeniorNotes310DueJune2028Memberus-gaap:ForeignExchangeContractMemberus-gaap:DesignatedAsHedgingInstrumentMember2023-01-012023-03-310001326160duk:SeniorNotes385DueJune2034Memberus-gaap:ForeignExchangeContractMemberus-gaap:DesignatedAsHedgingInstrumentMember2023-03-310001326160duk:SeniorNotes385DueJune2034Memberus-gaap:ForeignExchangeContractMemberus-gaap:DesignatedAsHedgingInstrumentMember2023-01-012023-03-310001326160us-gaap:ForeignExchangeContractMemberus-gaap:DesignatedAsHedgingInstrumentMember2023-03-310001326160us-gaap:ForeignExchangeContractMemberus-gaap:DesignatedAsHedgingInstrumentMember2023-01-012023-03-310001326160us-gaap:OtherCurrentAssetsMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMember2023-03-310001326160us-gaap:OtherCurrentAssetsMemberduk:DukeEnergyCarolinasMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMember2023-03-310001326160us-gaap:OtherCurrentAssetsMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMemberduk:ProgressEnergyMember2023-03-310001326160us-gaap:OtherCurrentAssetsMemberduk:DukeEnergyProgressMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMember2023-03-310001326160duk:DukeEnergyOhioMemberus-gaap:OtherCurrentAssetsMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMember2023-03-310001326160us-gaap:OtherCurrentAssetsMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMemberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:OtherCurrentAssetsMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMemberduk:PiedmontNaturalGasMember2023-03-310001326160us-gaap:OtherNoncurrentAssetsMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMember2023-03-310001326160us-gaap:OtherNoncurrentAssetsMemberduk:DukeEnergyCarolinasMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMember2023-03-310001326160us-gaap:OtherNoncurrentAssetsMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMemberduk:ProgressEnergyMember2023-03-310001326160us-gaap:OtherNoncurrentAssetsMemberduk:DukeEnergyProgressMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMember2023-03-310001326160us-gaap:CommodityContractMember2023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:CommodityContractMember2023-03-310001326160us-gaap:CommodityContractMemberduk:ProgressEnergyMember2023-03-310001326160duk:DukeEnergyProgressMemberus-gaap:CommodityContractMember2023-03-310001326160duk:DukeEnergyOhioMemberus-gaap:CommodityContractMember2023-03-310001326160us-gaap:CommodityContractMemberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:CommodityContractMemberduk:PiedmontNaturalGasMember2023-03-310001326160us-gaap:OtherCurrentAssetsMemberus-gaap:InterestRateContractMemberus-gaap:DesignatedAsHedgingInstrumentMember2023-03-310001326160us-gaap:OtherCurrentAssetsMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2023-03-310001326160us-gaap:OtherCurrentAssetsMemberduk:DukeEnergyCarolinasMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2023-03-310001326160us-gaap:OtherCurrentAssetsMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMemberduk:ProgressEnergyMember2023-03-310001326160us-gaap:OtherCurrentAssetsMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMemberduk:DukeEnergyFloridaMember2023-03-310001326160us-gaap:CommodityContractMemberus-gaap:NondesignatedMemberus-gaap:OtherCurrentLiabilitiesMember2023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMemberus-gaap:OtherCurrentLiabilitiesMember2023-03-310001326160us-gaap:CommodityContractMemberus-gaap:NondesignatedMemberduk:ProgressEnergyMemberus-gaap:OtherCurrentLiabilitiesMember2023-03-310001326160duk:DukeEnergyProgressMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMemberus-gaap:OtherCurrentLiabilitiesMember2023-03-310001326160us-gaap:CommodityContractMemberus-gaap:NondesignatedMemberduk:DukeEnergyIndianaMemberus-gaap:OtherCurrentLiabilitiesMember2023-03-310001326160us-gaap:CommodityContractMemberus-gaap:NondesignatedMemberduk:PiedmontNaturalGasMemberus-gaap:OtherCurrentLiabilitiesMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberduk:DukeEnergyCarolinasMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMemberduk:ProgressEnergyMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberduk:DukeEnergyProgressMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMemberduk:PiedmontNaturalGasMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberus-gaap:InterestRateContractMemberus-gaap:DesignatedAsHedgingInstrumentMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberduk:DukeEnergyCarolinasMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMemberduk:ProgressEnergyMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberduk:DukeEnergyProgressMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMemberduk:DukeEnergyFloridaMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberduk:DukeEnergyOhioMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMemberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:ForeignExchangeContractMemberus-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:OtherCurrentLiabilitiesMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberus-gaap:ForeignExchangeContractMemberus-gaap:DesignatedAsHedgingInstrumentMember2023-03-310001326160us-gaap:ForeignExchangeContractMember2023-03-310001326160us-gaap:OtherCurrentAssetsMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMember2022-12-310001326160us-gaap:OtherCurrentAssetsMemberduk:DukeEnergyCarolinasMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMember2022-12-310001326160us-gaap:OtherCurrentAssetsMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMemberduk:ProgressEnergyMember2022-12-310001326160us-gaap:OtherCurrentAssetsMemberduk:DukeEnergyProgressMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMember2022-12-310001326160duk:DukeEnergyOhioMemberus-gaap:OtherCurrentAssetsMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMember2022-12-310001326160us-gaap:OtherCurrentAssetsMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMemberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:OtherNoncurrentAssetsMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMember2022-12-310001326160us-gaap:OtherNoncurrentAssetsMemberduk:DukeEnergyCarolinasMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMember2022-12-310001326160us-gaap:OtherNoncurrentAssetsMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMemberduk:ProgressEnergyMember2022-12-310001326160us-gaap:OtherNoncurrentAssetsMemberduk:DukeEnergyProgressMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMember2022-12-310001326160us-gaap:CommodityContractMember2022-12-310001326160duk:DukeEnergyCarolinasMemberus-gaap:CommodityContractMember2022-12-310001326160us-gaap:CommodityContractMemberduk:ProgressEnergyMember2022-12-310001326160duk:DukeEnergyProgressMemberus-gaap:CommodityContractMember2022-12-310001326160duk:DukeEnergyOhioMemberus-gaap:CommodityContractMember2022-12-310001326160us-gaap:CommodityContractMemberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:InterestRateContractMemberus-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:OtherCurrentLiabilitiesMember2022-12-310001326160us-gaap:OtherCurrentAssetsMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2022-12-310001326160us-gaap:OtherCurrentAssetsMemberduk:DukeEnergyCarolinasMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2022-12-310001326160us-gaap:OtherCurrentAssetsMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMemberduk:ProgressEnergyMember2022-12-310001326160us-gaap:OtherCurrentAssetsMemberduk:DukeEnergyProgressMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2022-12-310001326160us-gaap:OtherCurrentAssetsMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMemberduk:DukeEnergyFloridaMember2022-12-310001326160us-gaap:OtherCurrentAssetsMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMemberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:CommodityContractMemberus-gaap:NondesignatedMemberus-gaap:OtherCurrentLiabilitiesMember2022-12-310001326160duk:DukeEnergyCarolinasMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMemberus-gaap:OtherCurrentLiabilitiesMember2022-12-310001326160us-gaap:CommodityContractMemberus-gaap:NondesignatedMemberduk:ProgressEnergyMemberus-gaap:OtherCurrentLiabilitiesMember2022-12-310001326160duk:DukeEnergyProgressMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMemberus-gaap:OtherCurrentLiabilitiesMember2022-12-310001326160us-gaap:CommodityContractMemberus-gaap:NondesignatedMemberduk:DukeEnergyFloridaMemberus-gaap:OtherCurrentLiabilitiesMember2022-12-310001326160us-gaap:CommodityContractMemberus-gaap:NondesignatedMemberduk:DukeEnergyIndianaMemberus-gaap:OtherCurrentLiabilitiesMember2022-12-310001326160us-gaap:CommodityContractMemberus-gaap:NondesignatedMemberduk:PiedmontNaturalGasMemberus-gaap:OtherCurrentLiabilitiesMember2022-12-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMember2022-12-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberduk:DukeEnergyCarolinasMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMember2022-12-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMemberduk:ProgressEnergyMember2022-12-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberduk:DukeEnergyProgressMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMember2022-12-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberus-gaap:CommodityContractMemberus-gaap:NondesignatedMemberduk:PiedmontNaturalGasMember2022-12-310001326160us-gaap:CommodityContractMemberduk:DukeEnergyFloridaMember2022-12-310001326160us-gaap:CommodityContractMemberduk:PiedmontNaturalGasMember2022-12-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2022-12-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberduk:DukeEnergyOhioMemberus-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2022-12-310001326160us-gaap:ForeignExchangeContractMemberus-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:OtherCurrentLiabilitiesMember2022-12-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberus-gaap:ForeignExchangeContractMemberus-gaap:DesignatedAsHedgingInstrumentMember2022-12-310001326160us-gaap:EquityContractMember2022-12-310001326160us-gaap:OtherCurrentAssetsMember2023-03-310001326160us-gaap:OtherCurrentAssetsMemberduk:DukeEnergyCarolinasMember2023-03-310001326160us-gaap:OtherCurrentAssetsMemberduk:ProgressEnergyMember2023-03-310001326160us-gaap:OtherCurrentAssetsMemberduk:DukeEnergyProgressMember2023-03-310001326160us-gaap:OtherCurrentAssetsMemberduk:DukeEnergyFloridaMember2023-03-310001326160duk:DukeEnergyOhioMemberus-gaap:OtherCurrentAssetsMember2023-03-310001326160us-gaap:OtherCurrentAssetsMemberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:OtherCurrentAssetsMemberduk:PiedmontNaturalGasMember2023-03-310001326160us-gaap:OtherNoncurrentAssetsMember2023-03-310001326160us-gaap:OtherNoncurrentAssetsMemberduk:DukeEnergyCarolinasMember2023-03-310001326160us-gaap:OtherNoncurrentAssetsMemberduk:ProgressEnergyMember2023-03-310001326160us-gaap:OtherNoncurrentAssetsMemberduk:DukeEnergyProgressMember2023-03-310001326160us-gaap:OtherCurrentLiabilitiesMember2023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:OtherCurrentLiabilitiesMember2023-03-310001326160duk:ProgressEnergyMemberus-gaap:OtherCurrentLiabilitiesMember2023-03-310001326160duk:DukeEnergyProgressMemberus-gaap:OtherCurrentLiabilitiesMember2023-03-310001326160duk:DukeEnergyIndianaMemberus-gaap:OtherCurrentLiabilitiesMember2023-03-310001326160duk:PiedmontNaturalGasMemberus-gaap:OtherCurrentLiabilitiesMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberduk:DukeEnergyCarolinasMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberduk:ProgressEnergyMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberduk:DukeEnergyProgressMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberduk:DukeEnergyFloridaMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberduk:DukeEnergyOhioMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberduk:PiedmontNaturalGasMember2023-03-310001326160us-gaap:OtherCurrentAssetsMember2022-12-310001326160us-gaap:OtherCurrentAssetsMemberduk:DukeEnergyCarolinasMember2022-12-310001326160us-gaap:OtherCurrentAssetsMemberduk:ProgressEnergyMember2022-12-310001326160us-gaap:OtherCurrentAssetsMemberduk:DukeEnergyProgressMember2022-12-310001326160us-gaap:OtherCurrentAssetsMemberduk:DukeEnergyFloridaMember2022-12-310001326160duk:DukeEnergyOhioMemberus-gaap:OtherCurrentAssetsMember2022-12-310001326160us-gaap:OtherCurrentAssetsMemberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:OtherNoncurrentAssetsMember2022-12-310001326160us-gaap:OtherNoncurrentAssetsMemberduk:DukeEnergyCarolinasMember2022-12-310001326160us-gaap:OtherNoncurrentAssetsMemberduk:ProgressEnergyMember2022-12-310001326160us-gaap:OtherNoncurrentAssetsMemberduk:DukeEnergyProgressMember2022-12-310001326160us-gaap:OtherCurrentLiabilitiesMember2022-12-310001326160duk:DukeEnergyCarolinasMemberus-gaap:OtherCurrentLiabilitiesMember2022-12-310001326160duk:ProgressEnergyMemberus-gaap:OtherCurrentLiabilitiesMember2022-12-310001326160duk:DukeEnergyProgressMemberus-gaap:OtherCurrentLiabilitiesMember2022-12-310001326160duk:DukeEnergyFloridaMemberus-gaap:OtherCurrentLiabilitiesMember2022-12-310001326160duk:DukeEnergyIndianaMemberus-gaap:OtherCurrentLiabilitiesMember2022-12-310001326160duk:PiedmontNaturalGasMemberus-gaap:OtherCurrentLiabilitiesMember2022-12-310001326160us-gaap:OtherNoncurrentLiabilitiesMember2022-12-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberduk:DukeEnergyCarolinasMember2022-12-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberduk:ProgressEnergyMember2022-12-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberduk:DukeEnergyProgressMember2022-12-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberduk:DukeEnergyOhioMember2022-12-310001326160us-gaap:OtherNoncurrentLiabilitiesMemberduk:PiedmontNaturalGasMember2022-12-310001326160duk:NdtfMember2023-03-310001326160duk:NdtfMember2022-12-310001326160us-gaap:CorporateDebtSecuritiesMemberduk:NdtfMember2023-03-310001326160us-gaap:CorporateDebtSecuritiesMemberduk:NdtfMember2022-12-310001326160us-gaap:MunicipalBondsMemberduk:NdtfMember2023-03-310001326160us-gaap:MunicipalBondsMemberduk:NdtfMember2022-12-310001326160us-gaap:USTreasuryAndGovernmentMemberduk:NdtfMember2023-03-310001326160us-gaap:USTreasuryAndGovernmentMemberduk:NdtfMember2022-12-310001326160us-gaap:OtherDebtSecuritiesMemberduk:NdtfMember2023-03-310001326160us-gaap:OtherDebtSecuritiesMemberduk:NdtfMember2022-12-310001326160duk:OtherClassificationMember2023-03-310001326160duk:OtherClassificationMember2022-12-310001326160us-gaap:CorporateDebtSecuritiesMemberduk:OtherClassificationMember2023-03-310001326160us-gaap:CorporateDebtSecuritiesMemberduk:OtherClassificationMember2022-12-310001326160duk:OtherClassificationMemberus-gaap:MunicipalBondsMember2023-03-310001326160duk:OtherClassificationMemberus-gaap:MunicipalBondsMember2022-12-310001326160duk:OtherClassificationMemberus-gaap:USTreasuryAndGovernmentMember2023-03-310001326160duk:OtherClassificationMemberus-gaap:USTreasuryAndGovernmentMember2022-12-310001326160duk:OtherClassificationMemberus-gaap:OtherDebtSecuritiesMember2023-03-310001326160duk:OtherClassificationMemberus-gaap:OtherDebtSecuritiesMember2022-12-310001326160duk:DukeEnergyCarolinasMemberduk:NdtfMember2023-03-310001326160duk:DukeEnergyCarolinasMemberduk:NdtfMember2022-12-310001326160duk:DukeEnergyCarolinasMemberus-gaap:CorporateDebtSecuritiesMemberduk:NdtfMember2023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:CorporateDebtSecuritiesMemberduk:NdtfMember2022-12-310001326160duk:DukeEnergyCarolinasMemberus-gaap:MunicipalBondsMemberduk:NdtfMember2023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:MunicipalBondsMemberduk:NdtfMember2022-12-310001326160duk:DukeEnergyCarolinasMemberus-gaap:USTreasuryAndGovernmentMemberduk:NdtfMember2023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:USTreasuryAndGovernmentMemberduk:NdtfMember2022-12-310001326160duk:DukeEnergyCarolinasMemberduk:NdtfMemberus-gaap:OtherDebtSecuritiesMember2023-03-310001326160duk:DukeEnergyCarolinasMemberduk:NdtfMemberus-gaap:OtherDebtSecuritiesMember2022-12-310001326160duk:NdtfMemberduk:ProgressEnergyMember2023-03-310001326160duk:NdtfMemberduk:ProgressEnergyMember2022-12-310001326160us-gaap:CorporateDebtSecuritiesMemberduk:NdtfMemberduk:ProgressEnergyMember2023-03-310001326160us-gaap:CorporateDebtSecuritiesMemberduk:NdtfMemberduk:ProgressEnergyMember2022-12-310001326160us-gaap:MunicipalBondsMemberduk:NdtfMemberduk:ProgressEnergyMember2023-03-310001326160us-gaap:MunicipalBondsMemberduk:NdtfMemberduk:ProgressEnergyMember2022-12-310001326160us-gaap:USTreasuryAndGovernmentMemberduk:NdtfMemberduk:ProgressEnergyMember2023-03-310001326160us-gaap:USTreasuryAndGovernmentMemberduk:NdtfMemberduk:ProgressEnergyMember2022-12-310001326160duk:NdtfMemberus-gaap:OtherDebtSecuritiesMemberduk:ProgressEnergyMember2023-03-310001326160duk:NdtfMemberus-gaap:OtherDebtSecuritiesMemberduk:ProgressEnergyMember2022-12-310001326160duk:OtherClassificationMemberduk:ProgressEnergyMember2023-03-310001326160duk:OtherClassificationMemberduk:ProgressEnergyMember2022-12-310001326160duk:OtherClassificationMemberus-gaap:MunicipalBondsMemberduk:ProgressEnergyMember2023-03-310001326160duk:OtherClassificationMemberus-gaap:MunicipalBondsMemberduk:ProgressEnergyMember2022-12-310001326160duk:DukeEnergyProgressMemberduk:NdtfMember2023-03-310001326160duk:DukeEnergyProgressMemberduk:NdtfMember2022-12-310001326160us-gaap:CorporateDebtSecuritiesMemberduk:DukeEnergyProgressMemberduk:NdtfMember2023-03-310001326160us-gaap:CorporateDebtSecuritiesMemberduk:DukeEnergyProgressMemberduk:NdtfMember2022-12-310001326160duk:DukeEnergyProgressMemberus-gaap:MunicipalBondsMemberduk:NdtfMember2023-03-310001326160duk:DukeEnergyProgressMemberus-gaap:MunicipalBondsMemberduk:NdtfMember2022-12-310001326160duk:DukeEnergyProgressMemberus-gaap:USTreasuryAndGovernmentMemberduk:NdtfMember2023-03-310001326160duk:DukeEnergyProgressMemberus-gaap:USTreasuryAndGovernmentMemberduk:NdtfMember2022-12-310001326160duk:DukeEnergyProgressMemberduk:NdtfMemberus-gaap:OtherDebtSecuritiesMember2023-03-310001326160duk:DukeEnergyProgressMemberduk:NdtfMemberus-gaap:OtherDebtSecuritiesMember2022-12-310001326160duk:DukeEnergyProgressMemberduk:OtherClassificationMember2023-03-310001326160duk:DukeEnergyProgressMemberduk:OtherClassificationMember2022-12-310001326160duk:NdtfMemberduk:DukeEnergyFloridaMember2023-03-310001326160duk:NdtfMemberduk:DukeEnergyFloridaMember2022-12-310001326160us-gaap:CorporateDebtSecuritiesMemberduk:NdtfMemberduk:DukeEnergyFloridaMember2023-03-310001326160us-gaap:CorporateDebtSecuritiesMemberduk:NdtfMemberduk:DukeEnergyFloridaMember2022-12-310001326160us-gaap:USTreasuryAndGovernmentMemberduk:NdtfMemberduk:DukeEnergyFloridaMember2023-03-310001326160us-gaap:USTreasuryAndGovernmentMemberduk:NdtfMemberduk:DukeEnergyFloridaMember2022-12-310001326160duk:NdtfMemberus-gaap:OtherDebtSecuritiesMemberduk:DukeEnergyFloridaMember2022-12-310001326160duk:OtherClassificationMemberduk:DukeEnergyFloridaMember2022-12-310001326160duk:OtherClassificationMemberus-gaap:MunicipalBondsMemberduk:DukeEnergyFloridaMember2023-03-310001326160duk:OtherClassificationMemberus-gaap:MunicipalBondsMemberduk:DukeEnergyFloridaMember2022-12-310001326160duk:OtherClassificationMemberduk:DukeEnergyFloridaMember2023-03-310001326160duk:OtherClassificationMemberduk:DukeEnergyIndianaMember2023-03-310001326160duk:OtherClassificationMemberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:CorporateDebtSecuritiesMemberduk:OtherClassificationMemberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:CorporateDebtSecuritiesMemberduk:OtherClassificationMemberduk:DukeEnergyIndianaMember2022-12-310001326160duk:OtherClassificationMemberus-gaap:MunicipalBondsMemberduk:DukeEnergyIndianaMember2023-03-310001326160duk:OtherClassificationMemberus-gaap:MunicipalBondsMemberduk:DukeEnergyIndianaMember2022-12-310001326160duk:OtherClassificationMemberus-gaap:USTreasuryAndGovernmentMemberduk:DukeEnergyIndianaMember2023-03-310001326160duk:OtherClassificationMemberus-gaap:USTreasuryAndGovernmentMemberduk:DukeEnergyIndianaMember2022-12-310001326160duk:NdtfMemberus-gaap:FairValueInputsLevel1Member2023-03-310001326160duk:NDTFEquitySecuritiesMember2023-03-310001326160duk:NDTFEquitySecuritiesMemberus-gaap:FairValueInputsLevel1Member2023-03-310001326160us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberduk:NDTFEquitySecuritiesMember2023-03-310001326160us-gaap:FairValueInputsLevel2Memberduk:NdtfMember2023-03-310001326160duk:OtherClassificationMemberus-gaap:FairValueInputsLevel1Member2023-03-310001326160duk:OtherClassificationMemberus-gaap:FairValueInputsLevel2Member2023-03-310001326160us-gaap:FairValueInputsLevel1Member2023-03-310001326160us-gaap:FairValueInputsLevel2Member2023-03-310001326160us-gaap:FairValueInputsLevel3Member2023-03-310001326160us-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-03-310001326160duk:NdtfMemberus-gaap:FairValueInputsLevel1Member2022-12-310001326160duk:NDTFEquitySecuritiesMember2022-12-310001326160duk:NDTFEquitySecuritiesMemberus-gaap:FairValueInputsLevel1Member2022-12-310001326160us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberduk:NDTFEquitySecuritiesMember2022-12-310001326160us-gaap:FairValueInputsLevel2Memberduk:NdtfMember2022-12-310001326160duk:OtherClassificationMemberus-gaap:FairValueInputsLevel1Member2022-12-310001326160duk:OtherClassificationMemberus-gaap:FairValueInputsLevel2Member2022-12-310001326160us-gaap:FairValueInputsLevel1Member2022-12-310001326160us-gaap:FairValueInputsLevel2Member2022-12-310001326160us-gaap:FairValueInputsLevel3Member2022-12-310001326160us-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-12-310001326160duk:DukeEnergyCarolinasMemberduk:NdtfMemberus-gaap:FairValueInputsLevel1Member2023-03-310001326160duk:DukeEnergyCarolinasMemberduk:NDTFEquitySecuritiesMember2023-03-310001326160duk:DukeEnergyCarolinasMemberduk:NDTFEquitySecuritiesMemberus-gaap:FairValueInputsLevel1Member2023-03-310001326160us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberduk:DukeEnergyCarolinasMemberduk:NDTFEquitySecuritiesMember2023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:FairValueInputsLevel2Memberduk:NdtfMember2023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:FairValueInputsLevel2Member2023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:FairValueInputsLevel1Member2023-03-310001326160us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberduk:DukeEnergyCarolinasMember2023-03-310001326160duk:DukeEnergyCarolinasMemberduk:NdtfMemberus-gaap:FairValueInputsLevel1Member2022-12-310001326160duk:DukeEnergyCarolinasMemberduk:NDTFEquitySecuritiesMember2022-12-310001326160duk:DukeEnergyCarolinasMemberduk:NDTFEquitySecuritiesMemberus-gaap:FairValueInputsLevel1Member2022-12-310001326160us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberduk:DukeEnergyCarolinasMemberduk:NDTFEquitySecuritiesMember2022-12-310001326160duk:DukeEnergyCarolinasMemberus-gaap:FairValueInputsLevel2Memberduk:NdtfMember2022-12-310001326160duk:DukeEnergyCarolinasMemberus-gaap:FairValueInputsLevel2Member2022-12-310001326160duk:DukeEnergyCarolinasMemberus-gaap:FairValueInputsLevel1Member2022-12-310001326160us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberduk:DukeEnergyCarolinasMember2022-12-310001326160duk:NdtfMemberus-gaap:FairValueInputsLevel1Memberduk:ProgressEnergyMember2023-03-310001326160duk:NdtfMemberus-gaap:FairValueInputsLevel1Memberduk:ProgressEnergyMember2022-12-310001326160duk:NDTFEquitySecuritiesMemberduk:ProgressEnergyMember2023-03-310001326160duk:NDTFEquitySecuritiesMemberus-gaap:FairValueInputsLevel1Memberduk:ProgressEnergyMember2023-03-310001326160duk:NDTFEquitySecuritiesMemberduk:ProgressEnergyMember2022-12-310001326160duk:NDTFEquitySecuritiesMemberus-gaap:FairValueInputsLevel1Memberduk:ProgressEnergyMember2022-12-310001326160us-gaap:FairValueInputsLevel2Memberduk:NdtfMemberduk:ProgressEnergyMember2023-03-310001326160us-gaap:FairValueInputsLevel2Memberduk:NdtfMemberduk:ProgressEnergyMember2022-12-310001326160duk:OtherClassificationMemberus-gaap:FairValueInputsLevel2Memberduk:ProgressEnergyMember2023-03-310001326160duk:OtherClassificationMemberus-gaap:FairValueInputsLevel2Memberduk:ProgressEnergyMember2022-12-310001326160duk:OtherClassificationMemberus-gaap:FairValueInputsLevel1Memberduk:ProgressEnergyMember2023-03-310001326160duk:OtherClassificationMemberus-gaap:FairValueInputsLevel1Memberduk:ProgressEnergyMember2022-12-310001326160us-gaap:FairValueInputsLevel2Memberduk:ProgressEnergyMember2023-03-310001326160us-gaap:FairValueInputsLevel2Memberduk:ProgressEnergyMember2022-12-310001326160us-gaap:FairValueInputsLevel1Memberduk:ProgressEnergyMember2023-03-310001326160us-gaap:FairValueInputsLevel1Memberduk:ProgressEnergyMember2022-12-310001326160duk:DukeEnergyProgressMemberduk:NdtfMemberus-gaap:FairValueInputsLevel1Member2023-03-310001326160duk:DukeEnergyProgressMemberduk:NdtfMemberus-gaap:FairValueInputsLevel1Member2022-12-310001326160duk:DukeEnergyProgressMemberduk:NDTFEquitySecuritiesMember2023-03-310001326160duk:DukeEnergyProgressMemberduk:NDTFEquitySecuritiesMemberus-gaap:FairValueInputsLevel1Member2023-03-310001326160duk:DukeEnergyProgressMemberduk:NDTFEquitySecuritiesMember2022-12-310001326160duk:DukeEnergyProgressMemberduk:NDTFEquitySecuritiesMemberus-gaap:FairValueInputsLevel1Member2022-12-310001326160duk:DukeEnergyProgressMemberus-gaap:FairValueInputsLevel2Memberduk:NdtfMember2023-03-310001326160duk:DukeEnergyProgressMemberus-gaap:FairValueInputsLevel2Memberduk:NdtfMember2022-12-310001326160duk:DukeEnergyProgressMemberduk:OtherClassificationMemberus-gaap:FairValueInputsLevel1Member2023-03-310001326160duk:DukeEnergyProgressMemberduk:OtherClassificationMemberus-gaap:FairValueInputsLevel1Member2022-12-310001326160duk:DukeEnergyProgressMemberus-gaap:FairValueInputsLevel2Member2023-03-310001326160duk:DukeEnergyProgressMemberus-gaap:FairValueInputsLevel2Member2022-12-310001326160duk:DukeEnergyProgressMemberus-gaap:FairValueInputsLevel1Member2023-03-310001326160duk:DukeEnergyProgressMemberus-gaap:FairValueInputsLevel1Member2022-12-310001326160duk:NdtfMemberduk:DukeEnergyFloridaMemberus-gaap:FairValueInputsLevel1Member2023-03-310001326160duk:NdtfMemberduk:DukeEnergyFloridaMemberus-gaap:FairValueInputsLevel1Member2022-12-310001326160duk:NDTFEquitySecuritiesMemberduk:DukeEnergyFloridaMember2023-03-310001326160duk:NDTFEquitySecuritiesMemberduk:DukeEnergyFloridaMemberus-gaap:FairValueInputsLevel1Member2023-03-310001326160duk:NDTFEquitySecuritiesMemberduk:DukeEnergyFloridaMember2022-12-310001326160duk:NDTFEquitySecuritiesMemberduk:DukeEnergyFloridaMemberus-gaap:FairValueInputsLevel1Member2022-12-310001326160us-gaap:FairValueInputsLevel2Memberduk:NdtfMemberduk:DukeEnergyFloridaMember2023-03-310001326160us-gaap:FairValueInputsLevel2Memberduk:NdtfMemberduk:DukeEnergyFloridaMember2022-12-310001326160duk:OtherClassificationMemberus-gaap:FairValueInputsLevel2Memberduk:DukeEnergyFloridaMember2023-03-310001326160duk:OtherClassificationMemberus-gaap:FairValueInputsLevel2Memberduk:DukeEnergyFloridaMember2022-12-310001326160duk:OtherClassificationMemberduk:DukeEnergyFloridaMemberus-gaap:FairValueInputsLevel1Member2022-12-310001326160us-gaap:FairValueInputsLevel2Memberduk:DukeEnergyFloridaMember2023-03-310001326160us-gaap:FairValueInputsLevel2Memberduk:DukeEnergyFloridaMember2022-12-310001326160duk:DukeEnergyFloridaMemberus-gaap:FairValueInputsLevel1Member2023-03-310001326160duk:DukeEnergyFloridaMemberus-gaap:FairValueInputsLevel1Member2022-12-310001326160duk:OtherClassificationMemberus-gaap:FairValueInputsLevel1Memberduk:DukeEnergyIndianaMember2023-03-310001326160duk:OtherClassificationMemberus-gaap:FairValueInputsLevel1Memberduk:DukeEnergyIndianaMember2022-12-310001326160duk:OtherClassificationMemberus-gaap:FairValueInputsLevel2Memberduk:DukeEnergyIndianaMember2023-03-310001326160duk:OtherClassificationMemberus-gaap:FairValueInputsLevel2Memberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:FairValueInputsLevel3Memberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:FairValueInputsLevel2Memberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:FairValueInputsLevel3Memberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:FairValueInputsLevel1Memberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:FairValueInputsLevel2Memberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:FairValueInputsLevel1Memberduk:DukeEnergyIndianaMember2022-12-310001326160duk:PiedmontNaturalGasMemberus-gaap:FairValueInputsLevel1Member2023-03-310001326160duk:PiedmontNaturalGasMemberus-gaap:FairValueInputsLevel1Member2022-12-310001326160us-gaap:FairValueInputsLevel2Memberduk:PiedmontNaturalGasMember2023-03-310001326160us-gaap:FairValueInputsLevel2Memberduk:PiedmontNaturalGasMember2022-12-310001326160us-gaap:MarketApproachValuationTechniqueMemberduk:DukeEnergyOhioMemberduk:DerivativeFinancialInstrumentsLiabilitiesFinancialTransmissionRightsMember2023-03-310001326160us-gaap:MarketApproachValuationTechniqueMemberduk:DukeEnergyOhioMemberduk:DerivativeFinancialInstrumentsLiabilitiesFinancialTransmissionRightsMembersrt:MinimumMember2023-03-31iso4217:USDutr:MWh0001326160srt:MaximumMemberus-gaap:MarketApproachValuationTechniqueMemberduk:DukeEnergyOhioMemberduk:DerivativeFinancialInstrumentsLiabilitiesFinancialTransmissionRightsMember2023-03-310001326160us-gaap:MarketApproachValuationTechniqueMemberduk:DukeEnergyOhioMemberduk:DerivativeFinancialInstrumentsLiabilitiesFinancialTransmissionRightsMembersrt:WeightedAverageMember2023-03-310001326160us-gaap:MarketApproachValuationTechniqueMemberduk:DerivativeFinancialInstrumentsLiabilitiesFinancialTransmissionRightsMemberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:MarketApproachValuationTechniqueMemberduk:DerivativeFinancialInstrumentsLiabilitiesFinancialTransmissionRightsMembersrt:MinimumMemberduk:DukeEnergyIndianaMember2023-03-310001326160srt:MaximumMemberus-gaap:MarketApproachValuationTechniqueMemberduk:DerivativeFinancialInstrumentsLiabilitiesFinancialTransmissionRightsMemberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:MarketApproachValuationTechniqueMemberduk:DerivativeFinancialInstrumentsLiabilitiesFinancialTransmissionRightsMembersrt:WeightedAverageMemberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:MarketApproachValuationTechniqueMemberduk:DukeEnergyOhioMemberduk:DerivativeFinancialInstrumentsLiabilitiesFinancialTransmissionRightsMember2022-12-310001326160us-gaap:MarketApproachValuationTechniqueMemberduk:DukeEnergyOhioMemberduk:DerivativeFinancialInstrumentsLiabilitiesFinancialTransmissionRightsMembersrt:MinimumMember2022-12-310001326160srt:MaximumMemberus-gaap:MarketApproachValuationTechniqueMemberduk:DukeEnergyOhioMemberduk:DerivativeFinancialInstrumentsLiabilitiesFinancialTransmissionRightsMember2022-12-310001326160us-gaap:MarketApproachValuationTechniqueMemberduk:DukeEnergyOhioMemberduk:DerivativeFinancialInstrumentsLiabilitiesFinancialTransmissionRightsMembersrt:WeightedAverageMember2022-12-310001326160us-gaap:MarketApproachValuationTechniqueMemberduk:DerivativeFinancialInstrumentsLiabilitiesFinancialTransmissionRightsMemberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:MarketApproachValuationTechniqueMemberduk:DerivativeFinancialInstrumentsLiabilitiesFinancialTransmissionRightsMembersrt:MinimumMemberduk:DukeEnergyIndianaMember2022-12-310001326160srt:MaximumMemberus-gaap:MarketApproachValuationTechniqueMemberduk:DerivativeFinancialInstrumentsLiabilitiesFinancialTransmissionRightsMemberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:MarketApproachValuationTechniqueMemberduk:DerivativeFinancialInstrumentsLiabilitiesFinancialTransmissionRightsMembersrt:WeightedAverageMemberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:CarryingReportedAmountFairValueDisclosureMember2023-03-310001326160us-gaap:EstimateOfFairValueFairValueDisclosureMember2023-03-310001326160us-gaap:CarryingReportedAmountFairValueDisclosureMember2022-12-310001326160us-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310001326160us-gaap:CarryingReportedAmountFairValueDisclosureMemberduk:DukeEnergyCarolinasMember2023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-03-310001326160us-gaap:CarryingReportedAmountFairValueDisclosureMemberduk:DukeEnergyCarolinasMember2022-12-310001326160duk:DukeEnergyCarolinasMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310001326160us-gaap:CarryingReportedAmountFairValueDisclosureMemberduk:ProgressEnergyMember2023-03-310001326160us-gaap:EstimateOfFairValueFairValueDisclosureMemberduk:ProgressEnergyMember2023-03-310001326160us-gaap:CarryingReportedAmountFairValueDisclosureMemberduk:ProgressEnergyMember2022-12-310001326160us-gaap:EstimateOfFairValueFairValueDisclosureMemberduk:ProgressEnergyMember2022-12-310001326160us-gaap:CarryingReportedAmountFairValueDisclosureMemberduk:DukeEnergyProgressMember2023-03-310001326160duk:DukeEnergyProgressMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-03-310001326160us-gaap:CarryingReportedAmountFairValueDisclosureMemberduk:DukeEnergyProgressMember2022-12-310001326160duk:DukeEnergyProgressMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310001326160us-gaap:CarryingReportedAmountFairValueDisclosureMemberduk:DukeEnergyFloridaMember2023-03-310001326160us-gaap:EstimateOfFairValueFairValueDisclosureMemberduk:DukeEnergyFloridaMember2023-03-310001326160us-gaap:CarryingReportedAmountFairValueDisclosureMemberduk:DukeEnergyFloridaMember2022-12-310001326160us-gaap:EstimateOfFairValueFairValueDisclosureMemberduk:DukeEnergyFloridaMember2022-12-310001326160us-gaap:CarryingReportedAmountFairValueDisclosureMemberduk:DukeEnergyOhioMember2023-03-310001326160duk:DukeEnergyOhioMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-03-310001326160us-gaap:CarryingReportedAmountFairValueDisclosureMemberduk:DukeEnergyOhioMember2022-12-310001326160duk:DukeEnergyOhioMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310001326160us-gaap:CarryingReportedAmountFairValueDisclosureMemberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:EstimateOfFairValueFairValueDisclosureMemberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:CarryingReportedAmountFairValueDisclosureMemberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:EstimateOfFairValueFairValueDisclosureMemberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:CarryingReportedAmountFairValueDisclosureMemberduk:PiedmontNaturalGasMember2023-03-310001326160us-gaap:EstimateOfFairValueFairValueDisclosureMemberduk:PiedmontNaturalGasMember2023-03-310001326160us-gaap:CarryingReportedAmountFairValueDisclosureMemberduk:PiedmontNaturalGasMember2022-12-310001326160us-gaap:EstimateOfFairValueFairValueDisclosureMemberduk:PiedmontNaturalGasMember2022-12-310001326160duk:PiedmontNaturalGasAndProgressEnergyMember2023-03-310001326160duk:PiedmontNaturalGasAndProgressEnergyMember2022-12-310001326160us-gaap:VariableInterestEntityPrimaryBeneficiaryMember2023-01-012023-03-310001326160us-gaap:VariableInterestEntityPrimaryBeneficiaryMemberduk:CinergyReceivablesMember2023-03-310001326160duk:DukeEnergyCarolinasMemberduk:DERFMemberus-gaap:VariableInterestEntityPrimaryBeneficiaryMember2023-03-310001326160duk:DukeEnergyProgressMemberus-gaap:VariableInterestEntityPrimaryBeneficiaryMemberduk:DeprMember2023-03-310001326160us-gaap:VariableInterestEntityPrimaryBeneficiaryMemberduk:DefrMemberduk:DukeEnergyFloridaMember2023-03-310001326160us-gaap:VariableInterestEntityPrimaryBeneficiaryMemberduk:CinergyReceivablesMember2022-12-310001326160duk:DukeEnergyCarolinasMemberduk:DERFMemberus-gaap:VariableInterestEntityPrimaryBeneficiaryMember2022-12-310001326160duk:DukeEnergyProgressMemberus-gaap:VariableInterestEntityPrimaryBeneficiaryMemberduk:DeprMember2022-12-310001326160us-gaap:VariableInterestEntityPrimaryBeneficiaryMemberduk:DefrMemberduk:DukeEnergyFloridaMember2022-12-310001326160us-gaap:VariableInterestEntityPrimaryBeneficiaryMemberduk:DEFPFMember2023-01-012023-03-310001326160us-gaap:VariableInterestEntityPrimaryBeneficiaryMemberduk:DukeEnergyFloridaMemberduk:DEFPFMember2023-03-310001326160us-gaap:VariableInterestEntityPrimaryBeneficiaryMemberduk:DukeEnergyFloridaMemberduk:DEFPFMember2022-12-310001326160duk:DECNCSFMemberduk:DukeEnergyCarolinasMemberus-gaap:VariableInterestEntityPrimaryBeneficiaryMember2021-11-012021-11-300001326160duk:DukeEnergyProgressMemberus-gaap:VariableInterestEntityPrimaryBeneficiaryMemberduk:DEPNCSFMember2021-11-012021-11-300001326160duk:DECNCSFAndDEPNCSFMemberus-gaap:VariableInterestEntityPrimaryBeneficiaryMember2023-01-012023-03-310001326160duk:DECNCSFMemberduk:DukeEnergyCarolinasMemberus-gaap:VariableInterestEntityPrimaryBeneficiaryMember2023-03-310001326160duk:DukeEnergyProgressMemberus-gaap:VariableInterestEntityPrimaryBeneficiaryMemberduk:DEPNCSFMember2023-03-310001326160duk:DECNCSFMemberduk:DukeEnergyCarolinasMemberus-gaap:VariableInterestEntityPrimaryBeneficiaryMember2022-12-310001326160duk:DukeEnergyProgressMemberus-gaap:VariableInterestEntityPrimaryBeneficiaryMemberduk:DEPNCSFMember2022-12-310001326160us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember2023-01-012023-03-310001326160us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberduk:DukeEnergyOhioMember2023-03-310001326160us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberduk:PipelineInvestmentsMember2023-03-310001326160us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberduk:DukeEnergyOhioMember2022-12-310001326160us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberduk:PipelineInvestmentsMember2022-12-310001326160us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberduk:CinergyReceivablesMember2023-01-012023-03-310001326160us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberduk:DukeEnergyOhioMemberduk:CinergyReceivablesMember2023-03-310001326160us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberduk:DukeEnergyOhioMemberduk:CinergyReceivablesMember2022-12-310001326160us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberduk:CinergyReceivablesMemberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberduk:CinergyReceivablesMemberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberduk:DukeEnergyOhioMemberduk:CinergyReceivablesMember2023-01-012023-03-310001326160us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberduk:DukeEnergyOhioMemberduk:CinergyReceivablesMember2022-01-012022-03-310001326160us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberduk:CinergyReceivablesMemberduk:DukeEnergyIndianaMember2023-01-012023-03-310001326160us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberduk:CinergyReceivablesMemberduk:DukeEnergyIndianaMember2022-01-012022-03-3100013261602023-04-01duk:ProgressEnergyMember2023-03-3100013261602024-01-01duk:ProgressEnergyMember2023-03-3100013261602025-01-01duk:ProgressEnergyMember2023-03-3100013261602026-01-01duk:ProgressEnergyMember2023-03-3100013261602027-01-01duk:ProgressEnergyMember2023-03-310001326160duk:ProgressEnergyMember2028-01-012023-03-3100013261602023-04-01duk:DukeEnergyProgressMember2023-03-3100013261602024-01-01duk:DukeEnergyProgressMember2023-03-3100013261602023-04-01duk:DukeEnergyFloridaMember2023-03-3100013261602024-01-01duk:DukeEnergyFloridaMember2023-03-3100013261602025-01-01duk:DukeEnergyFloridaMember2023-03-310001326160duk:DukeEnergyFloridaMember2026-01-012023-03-3100013261602027-01-01duk:DukeEnergyFloridaMember2023-03-310001326160duk:DukeEnergyFloridaMember2028-01-012023-03-3100013261602023-04-01duk:DukeEnergyIndianaMember2023-03-3100013261602024-01-01duk:DukeEnergyIndianaMember2023-03-3100013261602025-01-01duk:DukeEnergyIndianaMember2023-03-3100013261602026-01-01duk:DukeEnergyIndianaMember2023-03-3100013261602027-01-01duk:DukeEnergyIndianaMember2023-03-310001326160duk:DukeEnergyIndianaMember2028-01-012023-03-3100013261602023-04-01duk:PiedmontNaturalGasMember2023-03-3100013261602024-01-01duk:PiedmontNaturalGasMember2023-03-3100013261602025-01-01duk:PiedmontNaturalGasMember2023-03-310001326160duk:PiedmontNaturalGasMember2026-01-012023-03-3100013261602027-01-01duk:PiedmontNaturalGasMember2023-03-310001326160duk:PiedmontNaturalGasMember2028-01-012023-03-310001326160duk:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:ResidentialMemberduk:DukeEnergyCarolinasMemberus-gaap:ElectricityUsRegulatedMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberduk:ProgressEnergyMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:ResidentialMemberduk:DukeEnergyProgressMemberus-gaap:ElectricityUsRegulatedMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberduk:DukeEnergyFloridaMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:DukeEnergyOhioMemberduk:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberduk:DukeEnergyIndianaMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160us-gaap:ElectricityUsRegulatedMemberduk:GeneralMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:ElectricityUsRegulatedMemberduk:GeneralMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160us-gaap:ElectricityUsRegulatedMemberduk:ProgressEnergyMemberduk:GeneralMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:DukeEnergyProgressMemberus-gaap:ElectricityUsRegulatedMemberduk:GeneralMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160us-gaap:ElectricityUsRegulatedMemberduk:DukeEnergyFloridaMemberduk:GeneralMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:DukeEnergyOhioMemberus-gaap:ElectricityUsRegulatedMemberduk:GeneralMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160us-gaap:ElectricityUsRegulatedMemberduk:DukeEnergyIndianaMemberduk:GeneralMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:IndustrialMemberus-gaap:ElectricityUsRegulatedMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:IndustrialMemberduk:DukeEnergyCarolinasMemberus-gaap:ElectricityUsRegulatedMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:IndustrialMemberus-gaap:ElectricityUsRegulatedMemberduk:ProgressEnergyMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:IndustrialMemberduk:DukeEnergyProgressMemberus-gaap:ElectricityUsRegulatedMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:IndustrialMemberus-gaap:ElectricityUsRegulatedMemberduk:DukeEnergyFloridaMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:DukeEnergyOhioMemberduk:IndustrialMemberus-gaap:ElectricityUsRegulatedMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:IndustrialMemberus-gaap:ElectricityUsRegulatedMemberduk:DukeEnergyIndianaMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160us-gaap:ElectricityUsRegulatedMemberduk:WholesaleMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:ElectricityUsRegulatedMemberduk:WholesaleMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160us-gaap:ElectricityUsRegulatedMemberduk:WholesaleMemberduk:ProgressEnergyMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:DukeEnergyProgressMemberus-gaap:ElectricityUsRegulatedMemberduk:WholesaleMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160us-gaap:ElectricityUsRegulatedMemberduk:WholesaleMemberduk:DukeEnergyFloridaMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:DukeEnergyOhioMemberus-gaap:ElectricityUsRegulatedMemberduk:WholesaleMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160us-gaap:ElectricityUsRegulatedMemberduk:WholesaleMemberduk:DukeEnergyIndianaMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:OtherRevenuesMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:DukeEnergyCarolinasMemberduk:OtherRevenuesMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:OtherRevenuesMemberduk:ProgressEnergyMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:DukeEnergyProgressMemberduk:OtherRevenuesMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:DukeEnergyFloridaMemberduk:OtherRevenuesMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:DukeEnergyOhioMemberduk:OtherRevenuesMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:OtherRevenuesMemberduk:DukeEnergyIndianaMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:DukeEnergyCarolinasMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:ProgressEnergyMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:DukeEnergyProgressMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:DukeEnergyFloridaMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:DukeEnergyOhioMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:DukeEnergyIndianaMemberduk:ElectricUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:GasUtilitiesandInfrastructureMemberduk:ResidentialMemberus-gaap:NaturalGasUsRegulatedMember2023-01-012023-03-310001326160duk:DukeEnergyOhioMemberduk:GasUtilitiesandInfrastructureMemberduk:ResidentialMemberus-gaap:NaturalGasUsRegulatedMember2023-01-012023-03-310001326160duk:GasUtilitiesandInfrastructureMemberduk:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberduk:PiedmontNaturalGasMember2023-01-012023-03-310001326160duk:GasUtilitiesandInfrastructureMemberduk:CommercialMemberus-gaap:NaturalGasUsRegulatedMember2023-01-012023-03-310001326160duk:DukeEnergyOhioMemberduk:GasUtilitiesandInfrastructureMemberduk:CommercialMemberus-gaap:NaturalGasUsRegulatedMember2023-01-012023-03-310001326160duk:GasUtilitiesandInfrastructureMemberduk:CommercialMemberus-gaap:NaturalGasUsRegulatedMemberduk:PiedmontNaturalGasMember2023-01-012023-03-310001326160duk:GasUtilitiesandInfrastructureMemberduk:IndustrialMemberus-gaap:NaturalGasUsRegulatedMember2023-01-012023-03-310001326160duk:DukeEnergyOhioMemberduk:GasUtilitiesandInfrastructureMemberduk:IndustrialMemberus-gaap:NaturalGasUsRegulatedMember2023-01-012023-03-310001326160duk:GasUtilitiesandInfrastructureMemberduk:IndustrialMemberus-gaap:NaturalGasUsRegulatedMemberduk:PiedmontNaturalGasMember2023-01-012023-03-310001326160duk:GasUtilitiesandInfrastructureMemberus-gaap:NaturalGasUsRegulatedMemberduk:PowerGenerationMemberduk:PiedmontNaturalGasMember2023-01-012023-03-310001326160duk:GasUtilitiesandInfrastructureMemberduk:OtherRevenuesMember2023-01-012023-03-310001326160duk:DukeEnergyOhioMemberduk:GasUtilitiesandInfrastructureMemberduk:OtherRevenuesMember2023-01-012023-03-310001326160duk:GasUtilitiesandInfrastructureMemberduk:PiedmontNaturalGasMemberduk:OtherRevenuesMember2023-01-012023-03-310001326160duk:DukeEnergyOhioMemberduk:GasUtilitiesandInfrastructureMember2023-01-012023-03-310001326160duk:GasUtilitiesandInfrastructureMemberduk:PiedmontNaturalGasMember2023-01-012023-03-310001326160duk:CorporateAndReconcilingItemsMember2023-01-012023-03-310001326160duk:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:ResidentialMemberduk:DukeEnergyCarolinasMemberus-gaap:ElectricityUsRegulatedMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberduk:ProgressEnergyMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:ResidentialMemberduk:DukeEnergyProgressMemberus-gaap:ElectricityUsRegulatedMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberduk:DukeEnergyFloridaMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:DukeEnergyOhioMemberduk:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberduk:DukeEnergyIndianaMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160us-gaap:ElectricityUsRegulatedMemberduk:GeneralMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:ElectricityUsRegulatedMemberduk:GeneralMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160us-gaap:ElectricityUsRegulatedMemberduk:ProgressEnergyMemberduk:GeneralMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:DukeEnergyProgressMemberus-gaap:ElectricityUsRegulatedMemberduk:GeneralMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160us-gaap:ElectricityUsRegulatedMemberduk:DukeEnergyFloridaMemberduk:GeneralMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:DukeEnergyOhioMemberus-gaap:ElectricityUsRegulatedMemberduk:GeneralMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160us-gaap:ElectricityUsRegulatedMemberduk:DukeEnergyIndianaMemberduk:GeneralMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:IndustrialMemberus-gaap:ElectricityUsRegulatedMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:IndustrialMemberduk:DukeEnergyCarolinasMemberus-gaap:ElectricityUsRegulatedMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:IndustrialMemberus-gaap:ElectricityUsRegulatedMemberduk:ProgressEnergyMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:IndustrialMemberduk:DukeEnergyProgressMemberus-gaap:ElectricityUsRegulatedMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:IndustrialMemberus-gaap:ElectricityUsRegulatedMemberduk:DukeEnergyFloridaMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:DukeEnergyOhioMemberduk:IndustrialMemberus-gaap:ElectricityUsRegulatedMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:IndustrialMemberus-gaap:ElectricityUsRegulatedMemberduk:DukeEnergyIndianaMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160us-gaap:ElectricityUsRegulatedMemberduk:WholesaleMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:ElectricityUsRegulatedMemberduk:WholesaleMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160us-gaap:ElectricityUsRegulatedMemberduk:WholesaleMemberduk:ProgressEnergyMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:DukeEnergyProgressMemberus-gaap:ElectricityUsRegulatedMemberduk:WholesaleMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160us-gaap:ElectricityUsRegulatedMemberduk:WholesaleMemberduk:DukeEnergyFloridaMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:DukeEnergyOhioMemberus-gaap:ElectricityUsRegulatedMemberduk:WholesaleMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160us-gaap:ElectricityUsRegulatedMemberduk:WholesaleMemberduk:DukeEnergyIndianaMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:OtherRevenuesMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:DukeEnergyCarolinasMemberduk:OtherRevenuesMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:OtherRevenuesMemberduk:ProgressEnergyMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:DukeEnergyProgressMemberduk:OtherRevenuesMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:DukeEnergyFloridaMemberduk:OtherRevenuesMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:DukeEnergyOhioMemberduk:OtherRevenuesMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:OtherRevenuesMemberduk:DukeEnergyIndianaMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:DukeEnergyCarolinasMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:ProgressEnergyMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:DukeEnergyProgressMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:DukeEnergyFloridaMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:DukeEnergyOhioMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:DukeEnergyIndianaMemberduk:ElectricUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:GasUtilitiesandInfrastructureMemberduk:ResidentialMemberus-gaap:NaturalGasUsRegulatedMember2022-01-012022-03-310001326160duk:DukeEnergyOhioMemberduk:GasUtilitiesandInfrastructureMemberduk:ResidentialMemberus-gaap:NaturalGasUsRegulatedMember2022-01-012022-03-310001326160duk:GasUtilitiesandInfrastructureMemberduk:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberduk:PiedmontNaturalGasMember2022-01-012022-03-310001326160duk:GasUtilitiesandInfrastructureMemberduk:CommercialMemberus-gaap:NaturalGasUsRegulatedMember2022-01-012022-03-310001326160duk:DukeEnergyOhioMemberduk:GasUtilitiesandInfrastructureMemberduk:CommercialMemberus-gaap:NaturalGasUsRegulatedMember2022-01-012022-03-310001326160duk:GasUtilitiesandInfrastructureMemberduk:CommercialMemberus-gaap:NaturalGasUsRegulatedMemberduk:PiedmontNaturalGasMember2022-01-012022-03-310001326160duk:GasUtilitiesandInfrastructureMemberduk:IndustrialMemberus-gaap:NaturalGasUsRegulatedMember2022-01-012022-03-310001326160duk:DukeEnergyOhioMemberduk:GasUtilitiesandInfrastructureMemberduk:IndustrialMemberus-gaap:NaturalGasUsRegulatedMember2022-01-012022-03-310001326160duk:GasUtilitiesandInfrastructureMemberduk:IndustrialMemberus-gaap:NaturalGasUsRegulatedMemberduk:PiedmontNaturalGasMember2022-01-012022-03-310001326160duk:GasUtilitiesandInfrastructureMemberus-gaap:NaturalGasUsRegulatedMemberduk:PowerGenerationMemberduk:PiedmontNaturalGasMember2022-01-012022-03-310001326160duk:GasUtilitiesandInfrastructureMemberduk:OtherRevenuesMember2022-01-012022-03-310001326160duk:DukeEnergyOhioMemberduk:GasUtilitiesandInfrastructureMemberduk:OtherRevenuesMember2022-01-012022-03-310001326160duk:GasUtilitiesandInfrastructureMemberduk:PiedmontNaturalGasMemberduk:OtherRevenuesMember2022-01-012022-03-310001326160duk:DukeEnergyOhioMemberduk:GasUtilitiesandInfrastructureMember2022-01-012022-03-310001326160duk:GasUtilitiesandInfrastructureMemberduk:PiedmontNaturalGasMember2022-01-012022-03-310001326160duk:CorporateAndReconcilingItemsMember2022-01-012022-03-310001326160duk:DukeEnergyProgressMember2025-01-012023-03-310001326160duk:DukeEnergyProgressMember2026-01-012023-03-310001326160duk:DukeEnergyProgressMember2027-01-012023-03-310001326160duk:DukeEnergyProgressMember2028-01-012023-03-310001326160us-gaap:FinancingReceivables1To29DaysPastDueMember2023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:FinancingReceivables1To29DaysPastDueMember2023-03-310001326160us-gaap:FinancingReceivables1To29DaysPastDueMemberduk:ProgressEnergyMember2023-03-310001326160duk:DukeEnergyProgressMemberus-gaap:FinancingReceivables1To29DaysPastDueMember2023-03-310001326160us-gaap:FinancingReceivables1To29DaysPastDueMemberduk:DukeEnergyFloridaMember2023-03-310001326160duk:DukeEnergyOhioMemberus-gaap:FinancingReceivables1To29DaysPastDueMember2023-03-310001326160us-gaap:FinancingReceivables1To29DaysPastDueMemberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:FinancingReceivables1To29DaysPastDueMemberduk:PiedmontNaturalGasMember2023-03-310001326160us-gaap:FinancingReceivables30To59DaysPastDueMember2023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2023-03-310001326160us-gaap:FinancingReceivables30To59DaysPastDueMemberduk:ProgressEnergyMember2023-03-310001326160duk:DukeEnergyProgressMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2023-03-310001326160us-gaap:FinancingReceivables30To59DaysPastDueMemberduk:DukeEnergyFloridaMember2023-03-310001326160duk:DukeEnergyOhioMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2023-03-310001326160us-gaap:FinancingReceivables30To59DaysPastDueMemberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:FinancingReceivables30To59DaysPastDueMemberduk:PiedmontNaturalGasMember2023-03-310001326160us-gaap:FinancingReceivables60To89DaysPastDueMember2023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:FinancingReceivables60To89DaysPastDueMember2023-03-310001326160us-gaap:FinancingReceivables60To89DaysPastDueMemberduk:ProgressEnergyMember2023-03-310001326160duk:DukeEnergyProgressMemberus-gaap:FinancingReceivables60To89DaysPastDueMember2023-03-310001326160us-gaap:FinancingReceivables60To89DaysPastDueMemberduk:DukeEnergyFloridaMember2023-03-310001326160duk:DukeEnergyOhioMemberus-gaap:FinancingReceivables60To89DaysPastDueMember2023-03-310001326160us-gaap:FinancingReceivables60To89DaysPastDueMemberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:FinancingReceivables60To89DaysPastDueMemberduk:PiedmontNaturalGasMember2023-03-310001326160us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2023-03-310001326160duk:DukeEnergyCarolinasMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2023-03-310001326160us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberduk:ProgressEnergyMember2023-03-310001326160duk:DukeEnergyProgressMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2023-03-310001326160us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberduk:DukeEnergyFloridaMember2023-03-310001326160duk:DukeEnergyOhioMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2023-03-310001326160us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberduk:DukeEnergyIndianaMember2023-03-310001326160us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberduk:PiedmontNaturalGasMember2023-03-310001326160us-gaap:FinancingReceivables1To29DaysPastDueMember2022-12-310001326160duk:DukeEnergyCarolinasMemberus-gaap:FinancingReceivables1To29DaysPastDueMember2022-12-310001326160us-gaap:FinancingReceivables1To29DaysPastDueMemberduk:ProgressEnergyMember2022-12-310001326160duk:DukeEnergyProgressMemberus-gaap:FinancingReceivables1To29DaysPastDueMember2022-12-310001326160us-gaap:FinancingReceivables1To29DaysPastDueMemberduk:DukeEnergyFloridaMember2022-12-310001326160duk:DukeEnergyOhioMemberus-gaap:FinancingReceivables1To29DaysPastDueMember2022-12-310001326160us-gaap:FinancingReceivables1To29DaysPastDueMemberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:FinancingReceivables1To29DaysPastDueMemberduk:PiedmontNaturalGasMember2022-12-310001326160us-gaap:FinancingReceivables30To59DaysPastDueMember2022-12-310001326160duk:DukeEnergyCarolinasMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-12-310001326160us-gaap:FinancingReceivables30To59DaysPastDueMemberduk:ProgressEnergyMember2022-12-310001326160duk:DukeEnergyProgressMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-12-310001326160us-gaap:FinancingReceivables30To59DaysPastDueMemberduk:DukeEnergyFloridaMember2022-12-310001326160duk:DukeEnergyOhioMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-12-310001326160us-gaap:FinancingReceivables30To59DaysPastDueMemberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:FinancingReceivables30To59DaysPastDueMemberduk:PiedmontNaturalGasMember2022-12-310001326160us-gaap:FinancingReceivables60To89DaysPastDueMember2022-12-310001326160duk:DukeEnergyCarolinasMemberus-gaap:FinancingReceivables60To89DaysPastDueMember2022-12-310001326160us-gaap:FinancingReceivables60To89DaysPastDueMemberduk:ProgressEnergyMember2022-12-310001326160duk:DukeEnergyProgressMemberus-gaap:FinancingReceivables60To89DaysPastDueMember2022-12-310001326160us-gaap:FinancingReceivables60To89DaysPastDueMemberduk:DukeEnergyFloridaMember2022-12-310001326160duk:DukeEnergyOhioMemberus-gaap:FinancingReceivables60To89DaysPastDueMember2022-12-310001326160us-gaap:FinancingReceivables60To89DaysPastDueMemberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:FinancingReceivables60To89DaysPastDueMemberduk:PiedmontNaturalGasMember2022-12-310001326160us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2022-12-310001326160duk:DukeEnergyCarolinasMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2022-12-310001326160us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberduk:ProgressEnergyMember2022-12-310001326160duk:DukeEnergyProgressMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2022-12-310001326160us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberduk:DukeEnergyFloridaMember2022-12-310001326160duk:DukeEnergyOhioMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2022-12-310001326160us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberduk:PiedmontNaturalGasMember2022-12-310001326160duk:DukeEnergyOhioMemberduk:CinergyReceivablesMember2023-03-310001326160duk:CinergyReceivablesMemberduk:DukeEnergyIndianaMember2023-03-310001326160duk:DukeEnergyOhioMemberduk:CinergyReceivablesMember2022-12-310001326160duk:CinergyReceivablesMemberduk:DukeEnergyIndianaMember2022-12-310001326160us-gaap:SeriesAPreferredStockMember2023-01-012023-03-310001326160us-gaap:SeriesAPreferredStockMember2022-01-012022-03-310001326160us-gaap:SeriesBPreferredStockMember2023-01-012023-03-310001326160us-gaap:SeriesBPreferredStockMember2022-01-012022-03-310001326160us-gaap:PensionPlansDefinedBenefitMember2023-01-012023-03-310001326160us-gaap:PensionPlansDefinedBenefitMemberduk:DukeEnergyCarolinasMember2023-01-012023-03-310001326160us-gaap:PensionPlansDefinedBenefitMemberduk:ProgressEnergyMember2023-01-012023-03-310001326160us-gaap:PensionPlansDefinedBenefitMemberduk:DukeEnergyProgressMember2023-01-012023-03-310001326160us-gaap:PensionPlansDefinedBenefitMemberduk:DukeEnergyFloridaMember2023-01-012023-03-310001326160us-gaap:PensionPlansDefinedBenefitMemberduk:DukeEnergyOhioMember2023-01-012023-03-310001326160us-gaap:PensionPlansDefinedBenefitMemberduk:DukeEnergyIndianaMember2023-01-012023-03-310001326160us-gaap:PensionPlansDefinedBenefitMemberduk:PiedmontNaturalGasMember2023-01-012023-03-310001326160us-gaap:PensionPlansDefinedBenefitMember2022-01-012022-03-310001326160us-gaap:PensionPlansDefinedBenefitMemberduk:DukeEnergyCarolinasMember2022-01-012022-03-310001326160us-gaap:PensionPlansDefinedBenefitMemberduk:ProgressEnergyMember2022-01-012022-03-310001326160us-gaap:PensionPlansDefinedBenefitMemberduk:DukeEnergyProgressMember2022-01-012022-03-310001326160us-gaap:PensionPlansDefinedBenefitMemberduk:DukeEnergyFloridaMember2022-01-012022-03-310001326160us-gaap:PensionPlansDefinedBenefitMemberduk:DukeEnergyOhioMember2022-01-012022-03-310001326160us-gaap:PensionPlansDefinedBenefitMemberduk:DukeEnergyIndianaMember2022-01-012022-03-310001326160us-gaap:PensionPlansDefinedBenefitMemberduk:PiedmontNaturalGasMember2022-01-012022-03-31

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 10-Q
(Mark One)
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended March 31, 2023
OR
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from _________to_________
Commission File NumberRegistrant, State of Incorporation or Organization,
Address of Principal Executive Offices, Zip Code and Telephone Number
IRS Employer Identification No.
dukeenergylogo4ca65.jpg
1-32853
DUKE ENERGY CORPORATION
20-2777218
(a Delaware corporation)
526 South Church Street
Charlotte, North Carolina 28202-1803
704-382-3853
1-4928
DUKE ENERGY CAROLINAS, LLC
56-0205520
(a North Carolina limited liability company)
526 South Church Street
Charlotte, North Carolina 28202-1803
704-382-3853
1-15929
PROGRESS ENERGY, INC.
56-2155481
(a North Carolina corporation)
410 South Wilmington Street
Raleigh, North Carolina 27601-1748
704-382-3853
1-3382
DUKE ENERGY PROGRESS, LLC
56-0165465
(a North Carolina limited liability company)
410 South Wilmington Street
Raleigh, North Carolina 27601-1748
704-382-3853
1-3274
DUKE ENERGY FLORIDA, LLC
59-0247770
(a Florida limited liability company)
299 First Avenue North
St. Petersburg, Florida 33701
704-382-3853
1-1232
DUKE ENERGY OHIO, INC.
31-0240030
(an Ohio corporation)
139 East Fourth Street
Cincinnati, Ohio 45202
704-382-3853
1-3543
DUKE ENERGY INDIANA, LLC
35-0594457
(an Indiana limited liability company)
1000 East Main Street
Plainfield, Indiana 46168
704-382-3853
1-6196
PIEDMONT NATURAL GAS COMPANY, INC.
56-0556998
(a North Carolina corporation)
4720 Piedmont Row Drive
Charlotte, North Carolina 28210
704-364-3120





SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:
Name of each exchange on
Registrant    Title of each class    Trading symbols        which registered
Duke Energy    Common Stock, $0.001 par value    DUK    New York Stock Exchange LLC

Duke Energy    5.625% Junior Subordinated Debentures due    DUKB    New York Stock Exchange LLC
September 15, 2078
Duke Energy    Depositary Shares, each representing a 1/1,000th    DUK PR A    New York Stock Exchange LLC
interest in a share of 5.75% Series A Cumulative
Redeemable Perpetual Preferred Stock, par value
$0.001 per share
Duke Energy    3.10% Senior Notes due 2028    DUK 28A    New York Stock Exchange LLC        
Duke Energy    3.85% Senior Notes due 2034    DUK 34    New York Stock Exchange LLC
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.
Duke Energy Corporation (Duke Energy)YesNoDuke Energy Florida, LLC (Duke Energy Florida)YesNo
Duke Energy Carolinas, LLC (Duke Energy Carolinas)YesNoDuke Energy Ohio, Inc. (Duke Energy Ohio)YesNo
Progress Energy, Inc. (Progress Energy)YesNoDuke Energy Indiana, LLC (Duke Energy Indiana)YesNo
Duke Energy Progress, LLC (Duke Energy Progress)YesNoPiedmont Natural Gas Company, Inc. (Piedmont)YesNo
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).
Duke EnergyYesNoDuke Energy FloridaYesNo
Duke Energy CarolinasYesNoDuke Energy OhioYesNo
Progress EnergyYesNoDuke Energy IndianaYesNo
Duke Energy ProgressYesNoPiedmontYesNo
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and "emerging growth company" in Rule 12b-2 of the Exchange Act.
Duke EnergyLarge Accelerated FilerAccelerated filerNon-accelerated FilerSmaller reporting companyEmerging growth company
Duke Energy CarolinasLarge Accelerated FilerAccelerated filerNon-accelerated FilerSmaller reporting companyEmerging growth company
Progress EnergyLarge Accelerated FilerAccelerated filerNon-accelerated FilerSmaller reporting companyEmerging growth company
Duke Energy ProgressLarge Accelerated FilerAccelerated filerNon-accelerated FilerSmaller reporting companyEmerging growth company
Duke Energy FloridaLarge Accelerated FilerAccelerated filerNon-accelerated FilerSmaller reporting companyEmerging growth company
Duke Energy OhioLarge Accelerated FilerAccelerated filerNon-accelerated FilerSmaller reporting companyEmerging growth company
Duke Energy IndianaLarge Accelerated FilerAccelerated filerNon-accelerated FilerSmaller reporting companyEmerging growth company
PiedmontLarge Accelerated FilerAccelerated filerNon-accelerated FilerSmaller reporting companyEmerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).
Duke EnergyYes
NoDuke Energy FloridaYes
No
Duke Energy CarolinasYes
NoDuke Energy OhioYes
No
Progress EnergyYes
NoDuke Energy IndianaYes
No
Duke Energy ProgressYes
NoPiedmontYes
No



Number of shares of common stock outstanding at April 30, 2023:
RegistrantDescriptionShares
Duke EnergyCommon stock, $0.001 par value770,651,719
This combined Form 10-Q is filed separately by eight registrants: Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont (collectively the Duke Energy Registrants). Information contained herein relating to any individual registrant is filed by such registrant solely on its own behalf. Each registrant makes no representation as to information relating exclusively to the other registrants.
Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont meet the conditions set forth in General Instructions H(1)(a) and (b) of Form 10-Q and are therefore filing this form with the reduced disclosure format specified in General Instructions H(2) of Form 10-Q.



TABLE OF CONTENTS
PART I. FINANCIAL INFORMATION
Piedmont Natural Gas Company, Inc. Financial Statements
Note 1 – Organization and Basis of Presentation
Note 2 – Dispositions
Note 3 – Business Segments
Note 4 – Regulatory Matters
Note 5 – Commitments and Contingencies
Note 6 – Debt and Credit Facilities
Note 7 – Goodwill
Note 8 – Related Party Transactions
Note 9 – Derivatives and Hedging
Note 10 – Investments in Debt and Equity Securities
Note 11 – Fair Value Measurements
Note 12 – Variable Interest Entities
Note 13 – Revenue
Note 14 – Stockholders' Equity
Note 15 – Employee Benefit Plans
Note 16 – Income Taxes
Note 17 – Subsequent Events
PART II. OTHER INFORMATION



GLOSSARY OF TERMS

Glossary of Terms 
The following terms or acronyms used in this Form 10-Q are defined below:
Term or AcronymDefinition
2021 SettlementSettlement Agreement in 2021 among Duke Energy Florida, the Florida Office of Public Counsel, the Florida Industrial Power Users Group, White Springs Agricultural Chemicals, Inc. d/b/a PSC Phosphate and NUCOR Steel Florida, Inc.
AFUDCAllowance for funds used during construction
AROAsset retirement obligations
BisonBison Insurance Company Limited
BoardDuke Energy Board of Directors
CEPCapital Expenditure Program
the companyDuke Energy Corporation and its subsidiaries
Commercial Renewables Disposal GroupsCommercial Renewables business segment, excluding the offshore wind contract for Carolina Long Bay, marketed as three separate disposal groups
COVID-19Coronavirus Disease 2019
CRCCinergy Receivables Company, LLC
Crystal River Unit 3Crystal River Unit 3 Nuclear Plant
DEFPFDuke Energy Florida Project Finance, LLC
DEFRDuke Energy Florida Receivables, LLC
DEPRDuke Energy Progress Receivables, LLC
DERFDuke Energy Receivables Finance Company, LLC
Duke EnergyDuke Energy Corporation (collectively with its subsidiaries)
Duke Energy OhioDuke Energy Ohio, Inc.
Duke Energy ProgressDuke Energy Progress, LLC
Duke Energy CarolinasDuke Energy Carolinas, LLC
Duke Energy FloridaDuke Energy Florida, LLC
Duke Energy IndianaDuke Energy Indiana, LLC
Duke Energy RegistrantsDuke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont
EDITExcess deferred income tax
EPSEarnings Per Share
ERCOTElectric Reliability Council of Texas
ETREffective tax rate
EU&IElectric Utilities and Infrastructure
Exchange ActSecurities Exchange Act of 1934
FERCFederal Energy Regulatory Commission
FPSCFlorida Public Service Commission
FTRFinancial transmission rights
GAAPGenerally accepted accounting principles in the U.S.
GAAP Reported EarningsNet Income Available to Duke Energy Corporation Common Stockholders
GAAP Reported EPSBasic Earnings Per Share Available to Duke Energy Corporation common stockholders
GU&IGas Utilities and Infrastructure
GWhGigawatt-hours
HB 951The Energy Solutions for North Carolina, or House Bill 951, passed in October 2021
IMRIntegrity Management Rider


GLOSSARY OF TERMS

IRAInflation Reduction Act
IRSInternal Revenue Service
IURCIndiana Utility Regulatory Commission
KPSCKentucky Public Service Commission
LLCLimited Liability Company
MGPManufactured gas plant
MGP SettlementStipulation and Recommendation filed jointly by Duke Energy Ohio the staff of the PUCO, the Office of the Ohio Consumers' Counsel and the Ohio Energy Group on August 31, 2021
MWMegawatt
MWhMegawatt-hour
MYRPMultiyear rate plans
NCUCNorth Carolina Utilities Commission
NDTFNuclear decommissioning trust funds
NPNSNormal purchase/normal sale
OPEBOther Post-Retirement Benefit Obligations
the ParentDuke Energy Corporation holding company
PBRPerformance-based regulation
PiedmontPiedmont Natural Gas Company, Inc.
Progress EnergyProgress Energy, Inc.
PSCSCPublic Service Commission of South Carolina
PTCProduction Tax Credits
PUCOPublic Utilities Commission of Ohio
RTORegional Transmission Organization
Subsidiary RegistrantsDuke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont
TPUCTennessee Public Utility Commission
U.S.United States
VIEVariable Interest Entity



FORWARD-LOOKING STATEMENTS

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION
This document includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Forward-looking statements are based on management’s beliefs and assumptions and can often be identified by terms and phrases that include “anticipate,” “believe,” “intend,” “estimate,” “expect,” “continue,” “should,” “could,” “may,” “plan,” “project,” “predict,” “will,” “potential,” “forecast,” “target,” “guidance,” “outlook” or other similar terminology. Various factors may cause actual results to be materially different than the suggested outcomes within forward-looking statements; accordingly, there is no assurance that such results will be realized. These factors include, but are not limited to:
The ability to implement our business strategy, including our carbon emission reduction goals;
State, federal and foreign legislative and regulatory initiatives, including costs of compliance with existing and future environmental requirements, including those related to climate change, as well as rulings that affect cost and investment recovery or have an impact on rate structures or market prices;
The extent and timing of costs and liabilities to comply with federal and state laws, regulations and legal requirements related to coal ash remediation, including amounts for required closure of certain ash impoundments, are uncertain and difficult to estimate;
The ability to recover eligible costs, including amounts associated with coal ash impoundment retirement obligations, asset retirement and construction costs related to carbon emissions reductions, and costs related to significant weather events, and to earn an adequate return on investment through rate case proceedings and the regulatory process;
The costs of decommissioning nuclear facilities could prove to be more extensive than amounts estimated and all costs may not be fully recoverable through the regulatory process;
The impact of extraordinary external events, such as the pandemic health event resulting from COVID-19, and their collateral consequences, including the disruption of global supply chains or the economic activity in our service territories;
Costs and effects of legal and administrative proceedings, settlements, investigations and claims;
Industrial, commercial and residential growth or decline in service territories or customer bases resulting from sustained downturns of the economy, reduced customer usage due to cost pressures from inflation or fuel costs, and the economic health of our service territories or variations in customer usage patterns, including energy efficiency efforts, natural gas building and appliance electrification, and use of alternative energy sources, such as self-generation and distributed generation technologies;
Federal and state regulations, laws and other efforts designed to promote and expand the use of energy efficiency measures, natural gas electrification, and distributed generation technologies, such as private solar and battery storage, in Duke Energy service territories could result in a reduced number of customers, excess generation resources as well as stranded costs;
Advancements in technology;
Additional competition in electric and natural gas markets and continued industry consolidation;
The influence of weather and other natural phenomena on operations, including the economic, operational and other effects of severe storms, hurricanes, droughts, earthquakes and tornadoes, including extreme weather associated with climate change;
Changing investor, customer and other stakeholder expectations and demands including heightened emphasis on environmental, social and governance concerns and costs related thereto;
The ability to successfully operate electric generating facilities and deliver electricity to customers including direct or indirect effects to the company resulting from an incident that affects the United States electric grid or generating resources;
Operational interruptions to our natural gas distribution and transmission activities;
The availability of adequate interstate pipeline transportation capacity and natural gas supply;
The impact on facilities and business from a terrorist or other attack, war, vandalism, cybersecurity threats, data security breaches, operational events, information technology failures or other catastrophic events, such as fires, explosions, pandemic health events or other similar occurrences;
The inherent risks associated with the operation of nuclear facilities, including environmental, health, safety, regulatory and financial risks, including the financial stability of third-party service providers;
The timing and extent of changes in commodity prices and interest rates and the ability to recover such costs through the regulatory process, where appropriate, and their impact on liquidity positions and the value of underlying assets;
The results of financing efforts, including the ability to obtain financing on favorable terms, which can be affected by various factors, including credit ratings, interest rate fluctuations, compliance with debt covenants and conditions, an individual utility’s generation mix, and general market and economic conditions;
Credit ratings of the Duke Energy Registrants may be different from what is expected;
Declines in the market prices of equity and fixed-income securities and resultant cash funding requirements for defined benefit pension plans, other post-retirement benefit plans and nuclear decommissioning trust funds;


FORWARD-LOOKING STATEMENTS

Construction and development risks associated with the completion of the Duke Energy Registrants’ capital investment projects, including risks related to financing, timing and receipt of necessary regulatory approvals, obtaining and complying with terms of permits, meeting construction budgets and schedules and satisfying operating and environmental performance standards, as well as the ability to recover costs from customers in a timely manner, or at all;
Changes in rules for regional transmission organizations, including changes in rate designs and new and evolving capacity markets, and risks related to obligations created by the default of other participants;
The ability to control operation and maintenance costs;
The level of creditworthiness of counterparties to transactions;
The ability to obtain adequate insurance at acceptable costs;
Employee workforce factors, including the potential inability to attract and retain key personnel;
The ability of subsidiaries to pay dividends or distributions to Duke Energy Corporation holding company (the Parent);
The performance of projects undertaken by our nonregulated businesses and the success of efforts to invest in and develop new opportunities, as well as the successful sale of the Commercial Renewables Disposal Groups;
The effect of accounting and reporting pronouncements issued periodically by accounting standard-setting bodies and the SEC;
The impact of United States tax legislation to our financial condition, results of operations or cash flows and our credit ratings;
The impacts from potential impairments of goodwill or equity method investment carrying values;
Asset or business acquisitions and dispositions may not yield the anticipated benefits; and
The actions of activist shareholders could disrupt our operations, impact our ability to execute on our business strategy, or cause fluctuations in the trading price of our common stock.
Additional risks and uncertainties are identified and discussed in the Duke Energy Registrants' reports filed with the SEC and available at the SEC's website at sec.gov. In light of these risks, uncertainties and assumptions, the events described in the forward-looking statements might not occur or might occur to a different extent or at a different time than described. Forward-looking statements speak only as of the date they are made and the Duke Energy Registrants expressly disclaim any obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.


FINANCIAL STATEMENTS

ITEM 1. FINANCIAL STATEMENTS

DUKE ENERGY CORPORATION
Condensed Consolidated Statements of Operations
(Unaudited)
Three Months Ended
March 31,
(in millions, except per share amounts)20232022
Operating Revenues
Regulated electric$6,324 $5,933 
Regulated natural gas882 1,002 
Nonregulated electric and other70 76 
Total operating revenues7,276 7,011 
Operating Expenses
Fuel used in electric generation and purchased power2,377 1,817 
Cost of natural gas298 481 
Operation, maintenance and other1,310 1,548 
Depreciation and amortization1,227 1,257 
Property and other taxes389 382 
Impairment of assets and other charges8 215 
Total operating expenses5,609 5,700 
Gains on Sales of Other Assets and Other, net7 3 
Operating Income1,674 1,314 
Other Income and Expenses
Equity in earnings of unconsolidated affiliates20