0000936340--12-312024Q1FALSE0000028385P9MP1YP1YP1YP1YP9MP9MP1YP1YP1YP1YP1YP1YP1YP1Y00009363402024-01-012024-03-310000936340dte:DTEElectricMember2024-01-012024-03-310000936340us-gaap:CommonStockMember2024-01-012024-03-310000936340dte:SeriesE20175.25JuniorSubordinatedDebenturesDue2077Member2024-01-012024-03-310000936340dte:SeriesG20204375JuniorSubordinatedDebenturesDue2080Member2024-01-012024-03-310000936340dte:SeriesE20214375JuniorSubordinatedDebenturesDue2081Member2024-01-012024-03-3100009363402024-03-31xbrli:shares0000936340dte:DTEElectricMember2024-03-31iso4217:USD00009363402023-01-012023-03-31iso4217:USDxbrli:shares00009363402023-12-3100009363402022-12-3100009363402023-03-310000936340us-gaap:CommonStockMember2023-12-310000936340us-gaap:RetainedEarningsMember2023-12-310000936340us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-12-310000936340us-gaap:NoncontrollingInterestMember2023-12-310000936340us-gaap:RetainedEarningsMember2024-01-012024-03-310000936340us-gaap:CommonStockMember2024-01-012024-03-310000936340us-gaap:AccumulatedOtherComprehensiveIncomeMember2024-01-012024-03-310000936340us-gaap:CommonStockMember2024-03-310000936340us-gaap:RetainedEarningsMember2024-03-310000936340us-gaap:AccumulatedOtherComprehensiveIncomeMember2024-03-310000936340us-gaap:NoncontrollingInterestMember2024-03-310000936340us-gaap:CommonStockMember2022-12-310000936340us-gaap:RetainedEarningsMember2022-12-310000936340us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-12-310000936340us-gaap:NoncontrollingInterestMember2022-12-310000936340us-gaap:RetainedEarningsMember2023-01-012023-03-310000936340us-gaap:CommonStockMember2023-01-012023-03-310000936340us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-01-012023-03-310000936340us-gaap:CommonStockMember2023-03-310000936340us-gaap:RetainedEarningsMember2023-03-310000936340us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-03-310000936340us-gaap:NoncontrollingInterestMember2023-03-310000936340dte:DTEElectricMember2023-01-012023-03-310000936340dte:DTEElectricMember2023-12-310000936340us-gaap:NonrelatedPartyMemberdte:DTEElectricMember2024-03-310000936340us-gaap:NonrelatedPartyMemberdte:DTEElectricMember2023-12-310000936340srt:AffiliatedEntityMemberdte:DTEElectricMember2024-03-310000936340srt:AffiliatedEntityMemberdte:DTEElectricMember2023-12-310000936340srt:AffiliatedEntityMemberdte:DTEElectricMember2024-01-012024-03-310000936340srt:AffiliatedEntityMemberdte:DTEElectricMember2023-01-012023-03-310000936340us-gaap:NonrelatedPartyMemberdte:DTEElectricMember2024-01-012024-03-310000936340us-gaap:NonrelatedPartyMemberdte:DTEElectricMember2023-01-012023-03-310000936340dte:DTEElectricMember2022-12-310000936340dte:DTEElectricMember2023-03-310000936340dte:DTEElectricMemberus-gaap:CommonStockMember2023-12-310000936340us-gaap:AdditionalPaidInCapitalMemberdte:DTEElectricMember2023-12-310000936340us-gaap:RetainedEarningsMemberdte:DTEElectricMember2023-12-310000936340us-gaap:RetainedEarningsMemberdte:DTEElectricMember2024-01-012024-03-310000936340dte:DTEElectricMemberus-gaap:CommonStockMember2024-03-310000936340us-gaap:AdditionalPaidInCapitalMemberdte:DTEElectricMember2024-03-310000936340us-gaap:RetainedEarningsMemberdte:DTEElectricMember2024-03-310000936340dte:DTEElectricMemberus-gaap:CommonStockMember2022-12-310000936340us-gaap:AdditionalPaidInCapitalMemberdte:DTEElectricMember2022-12-310000936340us-gaap:RetainedEarningsMemberdte:DTEElectricMember2022-12-310000936340us-gaap:RetainedEarningsMemberdte:DTEElectricMember2023-01-012023-03-310000936340dte:DTEElectricMemberus-gaap:CommonStockMember2023-03-310000936340us-gaap:AdditionalPaidInCapitalMemberdte:DTEElectricMember2023-03-310000936340us-gaap:RetainedEarningsMemberdte:DTEElectricMember2023-03-31dte:customer0000936340us-gaap:VariableInterestEntityPrimaryBeneficiaryMember2024-03-310000936340dte:DTEElectricMemberus-gaap:VariableInterestEntityPrimaryBeneficiaryMember2024-03-310000936340us-gaap:VariableInterestEntityPrimaryBeneficiaryMember2023-12-310000936340dte:DTEElectricMemberus-gaap:VariableInterestEntityPrimaryBeneficiaryMember2023-12-310000936340dte:DTEVantageMemberus-gaap:VariableInterestEntityPrimaryBeneficiaryMember2024-01-012024-03-310000936340us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember2024-03-310000936340us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember2023-12-31xbrli:pure0000936340srt:ParentCompanyMemberdte:DTEElectricMemberdte:FederalAndStateIncomeTaxesMember2024-03-310000936340srt:ParentCompanyMemberdte:DTEElectricMemberdte:FederalIncomeTaxesMember2024-03-310000936340srt:ParentCompanyMemberdte:StateIncomeTaxesMemberdte:DTEElectricMember2024-03-310000936340srt:ParentCompanyMemberdte:DTEElectricMemberdte:FederalIncomeTaxesMember2023-12-310000936340srt:ParentCompanyMemberdte:DTEElectricMember2024-01-012024-03-310000936340srt:ParentCompanyMemberdte:DTEElectricMember2023-01-012023-03-310000936340us-gaap:NotesReceivableMemberdte:InternalGradeOneMember2024-03-310000936340us-gaap:NotesReceivableMemberdte:DTEElectricMemberdte:InternalGradeOneMember2024-03-310000936340us-gaap:NotesReceivableMemberdte:InternalGradeTwoMember2024-03-310000936340us-gaap:NotesReceivableMemberdte:DTEElectricMemberdte:InternalGradeTwoMember2024-03-310000936340us-gaap:NotesReceivableMember2024-03-310000936340us-gaap:NotesReceivableMemberdte:DTEElectricMember2024-03-310000936340dte:FinanceLeaseReceivableMemberdte:InternalGradeOneMember2024-03-310000936340dte:DTEElectricMemberdte:FinanceLeaseReceivableMemberdte:InternalGradeOneMember2024-03-310000936340dte:FinanceLeaseReceivableMemberdte:InternalGradeTwoMember2024-03-310000936340dte:DTEElectricMemberdte:FinanceLeaseReceivableMemberdte:InternalGradeTwoMember2024-03-310000936340dte:FinanceLeaseReceivableMember2024-03-310000936340dte:DTEElectricMemberdte:FinanceLeaseReceivableMember2024-03-310000936340dte:DTEElectricandDTEGasMemberus-gaap:AccountsReceivableMember2024-03-310000936340dte:DTEElectricandDTEGasMember2024-01-012024-03-310000936340us-gaap:NotesReceivableMemberdte:DTEElectricMembersrt:MinimumMember2024-03-310000936340us-gaap:NotesReceivableMembersrt:MinimumMember2024-03-310000936340us-gaap:NotesReceivableMembersrt:MaximumMember2024-03-310000936340us-gaap:NotesReceivableMembersrt:MaximumMemberdte:DTEElectricMember2024-03-310000936340us-gaap:TradeAccountsReceivableMember2023-12-310000936340dte:OtherFinancingReceivablesMember2023-12-310000936340us-gaap:TradeAccountsReceivableMember2024-01-012024-03-310000936340dte:OtherFinancingReceivablesMember2024-01-012024-03-310000936340us-gaap:TradeAccountsReceivableMember2024-03-310000936340dte:OtherFinancingReceivablesMember2024-03-310000936340us-gaap:TradeAccountsReceivableMember2022-12-310000936340dte:OtherFinancingReceivablesMember2022-12-310000936340us-gaap:TradeAccountsReceivableMember2023-01-012023-12-310000936340dte:OtherFinancingReceivablesMember2023-01-012023-12-3100009363402023-01-012023-12-310000936340dte:DTEElectricMember2023-01-012023-12-310000936340us-gaap:FinancialAssetPastDueMember2024-03-310000936340dte:ElectricMemberdte:ResidentialMemberus-gaap:OperatingSegmentsMember2024-01-012024-03-310000936340dte:ElectricMemberdte:ResidentialMemberus-gaap:OperatingSegmentsMember2023-01-012023-03-310000936340dte:ElectricMemberdte:CommercialMemberus-gaap:OperatingSegmentsMember2024-01-012024-03-310000936340dte:ElectricMemberdte:CommercialMemberus-gaap:OperatingSegmentsMember2023-01-012023-03-310000936340dte:ElectricMemberdte:IndustrialMemberus-gaap:OperatingSegmentsMember2024-01-012024-03-310000936340dte:ElectricMemberdte:IndustrialMemberus-gaap:OperatingSegmentsMember2023-01-012023-03-310000936340dte:ElectricMemberus-gaap:OperatingSegmentsMemberdte:OtherMember2024-01-012024-03-310000936340dte:ElectricMemberus-gaap:OperatingSegmentsMemberdte:OtherMember2023-01-012023-03-310000936340dte:ElectricMemberus-gaap:OperatingSegmentsMember2024-01-012024-03-310000936340dte:ElectricMemberus-gaap:OperatingSegmentsMember2023-01-012023-03-310000936340dte:GasMemberdte:GasSalesMemberus-gaap:OperatingSegmentsMember2024-01-012024-03-310000936340dte:GasMemberdte:GasSalesMemberus-gaap:OperatingSegmentsMember2023-01-012023-03-310000936340dte:GasMemberdte:EndUserTransportationMemberus-gaap:OperatingSegmentsMember2024-01-012024-03-310000936340dte:GasMemberdte:EndUserTransportationMemberus-gaap:OperatingSegmentsMember2023-01-012023-03-310000936340dte:GasMemberus-gaap:OperatingSegmentsMemberdte:IntermediateTransportationMember2024-01-012024-03-310000936340dte:GasMemberus-gaap:OperatingSegmentsMemberdte:IntermediateTransportationMember2023-01-012023-03-310000936340dte:GasMemberus-gaap:OperatingSegmentsMemberdte:OtherMember2024-01-012024-03-310000936340dte:GasMemberus-gaap:OperatingSegmentsMemberdte:OtherMember2023-01-012023-03-310000936340dte:GasMemberus-gaap:OperatingSegmentsMember2024-01-012024-03-310000936340dte:GasMemberus-gaap:OperatingSegmentsMember2023-01-012023-03-310000936340dte:DTEVantageMemberus-gaap:OperatingSegmentsMember2024-01-012024-03-310000936340dte:DTEVantageMemberus-gaap:OperatingSegmentsMember2023-01-012023-03-310000936340dte:EnergyTradingMemberus-gaap:OperatingSegmentsMember2024-01-012024-03-310000936340dte:EnergyTradingMemberus-gaap:OperatingSegmentsMember2023-01-012023-03-310000936340dte:DTESustainableGenerationMemberdte:ElectricMemberus-gaap:OperatingSegmentsMemberdte:OtherMember2024-01-012024-03-310000936340dte:DTESustainableGenerationMemberdte:ElectricMemberus-gaap:OperatingSegmentsMemberdte:OtherMember2023-01-012023-03-3100009363402024-04-01dte:ContractWithCustomerLiabilityMember2024-03-3100009363402025-01-01dte:ContractWithCustomerLiabilityMember2024-03-3100009363402026-01-01dte:ContractWithCustomerLiabilityMember2024-03-3100009363402027-01-01dte:ContractWithCustomerLiabilityMember2024-03-3100009363402028-01-01dte:ContractWithCustomerLiabilityMember2024-03-3100009363402029-01-01dte:ContractWithCustomerLiabilityMember2024-03-310000936340dte:ContractWithCustomerLiabilityMember2024-03-310000936340us-gaap:FixedPriceContractMember2024-04-012024-03-310000936340us-gaap:FixedPriceContractMemberdte:DTEElectricMember2024-04-012024-03-310000936340us-gaap:FixedPriceContractMember2025-01-012024-03-310000936340us-gaap:FixedPriceContractMemberdte:DTEElectricMember2025-01-012024-03-3100009363402026-01-01us-gaap:FixedPriceContractMember2024-03-3100009363402026-01-01us-gaap:FixedPriceContractMemberdte:DTEElectricMember2024-03-310000936340us-gaap:FixedPriceContractMember2027-01-012024-03-310000936340us-gaap:FixedPriceContractMemberdte:DTEElectricMember2027-01-012024-03-310000936340us-gaap:FixedPriceContractMember2028-01-012024-03-310000936340us-gaap:FixedPriceContractMemberdte:DTEElectricMember2028-01-012024-03-3100009363402029-01-01us-gaap:FixedPriceContractMember2024-03-3100009363402029-01-01us-gaap:FixedPriceContractMemberdte:DTEElectricMember2024-03-310000936340us-gaap:FixedPriceContractMember2024-03-310000936340us-gaap:FixedPriceContractMemberdte:DTEElectricMember2024-03-310000936340dte:MPSCMemberdte:A2024DTEGasRateCaseFilingMemberdte:DTEGasMember2024-01-082024-01-080000936340dte:MPSCMemberdte:A2024DTEGasRateCaseFilingMemberdte:RecoveryMechanismCustomerRateIncreaseMemberdte:DTEGasMember2024-01-082024-01-080000936340dte:MPSCMemberdte:A2024DTEGasRateCaseFilingMemberdte:DTEGasMemberdte:RecoveryMechanismInfrastructureRecoveryMember2024-01-082024-01-080000936340dte:A2024DTEElectricRateCaseFilingMemberdte:MPSCMemberdte:DTEElectricMember2024-03-282024-03-280000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:EquitySecuritiesMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:EquitySecuritiesMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:EquitySecuritiesMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:EquitySecuritiesMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:EquitySecuritiesMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:EquitySecuritiesMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:EquitySecuritiesMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:EquitySecuritiesMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:EquitySecuritiesMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:EquitySecuritiesMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FixedIncomeSecuritiesMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FixedIncomeSecuritiesMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FixedIncomeSecuritiesMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FixedIncomeSecuritiesMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FixedIncomeSecuritiesMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FixedIncomeSecuritiesMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000936340us-gaap:PrivateEquityFundsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2024-03-310000936340us-gaap:PrivateEquityFundsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2024-03-310000936340us-gaap:PrivateEquityFundsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2024-03-310000936340us-gaap:PrivateEquityFundsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2024-03-310000936340us-gaap:PrivateEquityFundsMemberus-gaap:FairValueMeasurementsRecurringMember2024-03-310000936340us-gaap:PrivateEquityFundsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000936340us-gaap:PrivateEquityFundsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2023-12-310000936340us-gaap:PrivateEquityFundsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000936340us-gaap:PrivateEquityFundsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-12-310000936340us-gaap:PrivateEquityFundsMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:HedgeFundsMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:HedgeFundsMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:HedgeFundsMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:HedgeFundsMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:HedgeFundsMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:HedgeFundsMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:HedgeFundsMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:HedgeFundsMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CashEquivalentsMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:CashEquivalentsMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CashEquivalentsMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:CashEquivalentsMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CashEquivalentsMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:CashEquivalentsMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CashEquivalentsMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:CashEquivalentsMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:OtherInvestmentsMemberus-gaap:FairValueMeasurementsRecurringMember2024-03-310000936340us-gaap:OtherInvestmentsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:OtherInvestmentsMemberus-gaap:FairValueMeasurementsRecurringMember2024-03-310000936340us-gaap:OtherInvestmentsMemberus-gaap:FairValueMeasurementsRecurringMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:OtherInvestmentsMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000936340us-gaap:OtherInvestmentsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:OtherInvestmentsMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000936340us-gaap:OtherInvestmentsMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:NaturalGasCommodityContractMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:NaturalGasCommodityContractMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:NaturalGasCommodityContractMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:NaturalGasCommodityContractMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:NaturalGasCommodityContractMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:NaturalGasCommodityContractMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:NaturalGasCommodityContractMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:NaturalGasCommodityContractMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:ElectricityCommodityContractMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:ElectricityCommodityContractMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:ElectricityCommodityContractMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:ElectricityCommodityContractMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:ElectricityCommodityContractMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:ElectricityCommodityContractMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:ElectricityCommodityContractMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:ElectricityCommodityContractMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:EnvironmentalandOtherCommodityContractMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:EnvironmentalandOtherCommodityContractMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:EnvironmentalandOtherCommodityContractMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:EnvironmentalandOtherCommodityContractMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:EnvironmentalandOtherCommodityContractMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:EnvironmentalandOtherCommodityContractMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:EnvironmentalandOtherCommodityContractMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:EnvironmentalandOtherCommodityContractMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherContractMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:OtherContractMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherContractMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherContractMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherContractMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:OtherContractMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherContractMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherContractMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:CurrentAssetMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:CurrentAssetMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:CurrentAssetMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:CurrentAssetMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:CurrentAssetMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:CurrentAssetMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:CurrentAssetMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:CurrentAssetMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:NoncurrentAssetMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:NoncurrentAssetMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:NoncurrentAssetMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:NoncurrentAssetMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:NoncurrentAssetMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:NoncurrentAssetMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:NoncurrentAssetMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:NoncurrentAssetMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:NoncurrentAssetMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:NoncurrentAssetMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberdte:CurrentDerivativeLiabilityMemberus-gaap:FairValueMeasurementsRecurringMember2024-03-310000936340dte:CurrentDerivativeLiabilityMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2024-03-310000936340us-gaap:FairValueInputsLevel3Memberdte:CurrentDerivativeLiabilityMemberus-gaap:FairValueMeasurementsRecurringMember2024-03-310000936340dte:CurrentDerivativeLiabilityMemberus-gaap:FairValueMeasurementsRecurringMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberdte:CurrentDerivativeLiabilityMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000936340dte:CurrentDerivativeLiabilityMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2023-12-310000936340us-gaap:FairValueInputsLevel3Memberdte:CurrentDerivativeLiabilityMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000936340dte:CurrentDerivativeLiabilityMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:NoncurrentDerivativeLiabilityMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:NoncurrentDerivativeLiabilityMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:NoncurrentDerivativeLiabilityMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:NoncurrentDerivativeLiabilityMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:NoncurrentDerivativeLiabilityMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:NoncurrentDerivativeLiabilityMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:NoncurrentDerivativeLiabilityMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:NoncurrentDerivativeLiabilityMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:RestrictedCashMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:RestrictedCashMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:DTEElectricMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:DTEElectricMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:EquitySecuritiesMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:DTEElectricMemberus-gaap:EquitySecuritiesMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:EquitySecuritiesMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:EquitySecuritiesMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:EquitySecuritiesMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:EquitySecuritiesMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:DTEElectricMemberus-gaap:EquitySecuritiesMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:EquitySecuritiesMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:EquitySecuritiesMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:EquitySecuritiesMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:FixedIncomeSecuritiesMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:DTEElectricMemberus-gaap:FixedIncomeSecuritiesMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:FixedIncomeSecuritiesMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FixedIncomeSecuritiesMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:FixedIncomeSecuritiesMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:DTEElectricMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000936340us-gaap:PrivateEquityFundsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMember2024-03-310000936340us-gaap:PrivateEquityFundsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:DTEElectricMember2024-03-310000936340us-gaap:PrivateEquityFundsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMember2024-03-310000936340us-gaap:PrivateEquityFundsMemberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2024-03-310000936340us-gaap:PrivateEquityFundsMemberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMember2024-03-310000936340us-gaap:PrivateEquityFundsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMember2023-12-310000936340us-gaap:PrivateEquityFundsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:DTEElectricMember2023-12-310000936340us-gaap:PrivateEquityFundsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMember2023-12-310000936340us-gaap:PrivateEquityFundsMemberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-12-310000936340us-gaap:PrivateEquityFundsMemberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:HedgeFundsMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:DTEElectricMemberus-gaap:HedgeFundsMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:HedgeFundsMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:HedgeFundsMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:HedgeFundsMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:DTEElectricMemberus-gaap:HedgeFundsMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:HedgeFundsMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:HedgeFundsMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:CashEquivalentsMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:DTEElectricMemberus-gaap:CashEquivalentsMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:CashEquivalentsMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:CashEquivalentsMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:CashEquivalentsMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:DTEElectricMemberus-gaap:CashEquivalentsMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:CashEquivalentsMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:CashEquivalentsMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberdte:FinancialTransmissionRightsMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:DTEElectricMemberdte:FinancialTransmissionRightsMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberdte:FinancialTransmissionRightsMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberdte:FinancialTransmissionRightsMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberdte:FinancialTransmissionRightsMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:DTEElectricMemberdte:FinancialTransmissionRightsMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberdte:FinancialTransmissionRightsMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberdte:FinancialTransmissionRightsMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberdte:CurrentAssetMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:DTEElectricMemberdte:CurrentAssetMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberdte:CurrentAssetMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberdte:CurrentAssetMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberdte:CurrentAssetMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:DTEElectricMemberdte:CurrentAssetMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberdte:CurrentAssetMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberdte:CurrentAssetMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberdte:NoncurrentAssetMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:DTEElectricMemberdte:NoncurrentAssetMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberdte:NoncurrentAssetMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberdte:NoncurrentAssetMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberdte:NoncurrentAssetMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberdte:NoncurrentAssetMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberdte:DTEElectricMemberdte:NoncurrentAssetMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberdte:NoncurrentAssetMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberdte:NoncurrentAssetMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMemberdte:NoncurrentAssetMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:RestrictedCashMemberdte:DTEElectricMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:RestrictedCashMemberdte:DTEElectricMember2023-12-310000936340dte:EquityOrDebtSecuritiesMembersrt:MinimumMember2024-01-012024-03-310000936340srt:MaximumMemberdte:EquityOrDebtSecuritiesMember2024-01-012024-03-310000936340us-gaap:PrivateEquityFundsMembersrt:MinimumMember2024-01-012024-03-310000936340us-gaap:PrivateEquityFundsMembersrt:MaximumMember2024-01-012024-03-310000936340us-gaap:PrivateEquityFundsMember2024-03-310000936340us-gaap:PrivateEquityFundsMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:OtherCommodityContractMember2023-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:NaturalGasCommodityContractMember2022-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:ElectricityCommodityContractMember2022-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:OtherCommodityContractMember2022-12-310000936340us-gaap:FairValueMeasurementsRecurringMember2022-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:NaturalGasCommodityContractMember2024-01-012024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:ElectricityCommodityContractMember2024-01-012024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:OtherCommodityContractMember2024-01-012024-03-310000936340us-gaap:FairValueMeasurementsRecurringMember2024-01-012024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:NaturalGasCommodityContractMember2023-01-012023-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:ElectricityCommodityContractMember2023-01-012023-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:OtherCommodityContractMember2023-01-012023-03-310000936340us-gaap:FairValueMeasurementsRecurringMember2023-01-012023-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:OtherCommodityContractMember2024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:NaturalGasCommodityContractMember2023-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:ElectricityCommodityContractMember2023-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:OtherCommodityContractMember2023-03-310000936340us-gaap:FairValueMeasurementsRecurringMember2023-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMember2022-12-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMember2024-01-012024-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMember2023-01-012023-03-310000936340us-gaap:FairValueMeasurementsRecurringMemberdte:DTEElectricMember2023-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputCommodityForwardPriceMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberdte:NaturalGasCommodityContractMembersrt:MinimumMember2024-03-31iso4217:USDutr:MMBTU0000936340us-gaap:FairValueInputsLevel3Membersrt:MaximumMemberus-gaap:MeasurementInputCommodityForwardPriceMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberdte:NaturalGasCommodityContractMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputCommodityForwardPriceMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberdte:NaturalGasCommodityContractMembersrt:WeightedAverageMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputCommodityForwardPriceMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberdte:ElectricityCommodityContractMembersrt:MinimumMember2024-03-31iso4217:USDutr:MWh0000936340us-gaap:FairValueInputsLevel3Membersrt:MaximumMemberus-gaap:MeasurementInputCommodityForwardPriceMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberdte:ElectricityCommodityContractMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputCommodityForwardPriceMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberdte:ElectricityCommodityContractMembersrt:WeightedAverageMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputCommodityForwardPriceMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberdte:NaturalGasCommodityContractMembersrt:MinimumMember2023-12-310000936340us-gaap:FairValueInputsLevel3Membersrt:MaximumMemberus-gaap:MeasurementInputCommodityForwardPriceMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberdte:NaturalGasCommodityContractMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputCommodityForwardPriceMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberdte:NaturalGasCommodityContractMembersrt:WeightedAverageMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputCommodityForwardPriceMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberdte:ElectricityCommodityContractMembersrt:MinimumMember2023-12-310000936340us-gaap:FairValueInputsLevel3Membersrt:MaximumMemberus-gaap:MeasurementInputCommodityForwardPriceMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberdte:ElectricityCommodityContractMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputCommodityForwardPriceMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberdte:ElectricityCommodityContractMembersrt:WeightedAverageMember2023-12-310000936340us-gaap:CarryingReportedAmountFairValueDisclosureMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2024-03-310000936340us-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel2Member2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2024-03-310000936340us-gaap:CarryingReportedAmountFairValueDisclosureMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-12-310000936340us-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel2Member2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-12-310000936340us-gaap:CarryingReportedAmountFairValueDisclosureMemberdte:DTEElectricMember2024-03-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:EstimateOfFairValueFairValueDisclosureMemberdte:DTEElectricMember2024-03-310000936340us-gaap:FairValueInputsLevel2Memberus-gaap:EstimateOfFairValueFairValueDisclosureMemberdte:DTEElectricMember2024-03-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:EstimateOfFairValueFairValueDisclosureMemberdte:DTEElectricMember2024-03-310000936340us-gaap:CarryingReportedAmountFairValueDisclosureMemberdte:DTEElectricMember2023-12-310000936340us-gaap:FairValueInputsLevel1Memberus-gaap:EstimateOfFairValueFairValueDisclosureMemberdte:DTEElectricMember2023-12-310000936340us-gaap:FairValueInputsLevel2Memberus-gaap:EstimateOfFairValueFairValueDisclosureMemberdte:DTEElectricMember2023-12-310000936340us-gaap:FairValueInputsLevel3Memberus-gaap:EstimateOfFairValueFairValueDisclosureMemberdte:DTEElectricMember2023-12-310000936340dte:DTEElectricMemberdte:NuclearDecommissioningTrustFundMemberus-gaap:NuclearPlantMember2024-03-310000936340dte:DTEElectricMemberdte:NuclearDecommissioningTrustFundMemberus-gaap:NuclearPlantMember2023-12-310000936340dte:NuclearPlant1Memberdte:DTEElectricMemberdte:NuclearDecommissioningTrustFundMember2024-03-310000936340dte:NuclearPlant1Memberdte:DTEElectricMemberdte:NuclearDecommissioningTrustFundMember2023-12-310000936340dte:LowLevelRadioactiveWasteMemberdte:DTEElectricMemberdte:NuclearDecommissioningTrustFundMember2024-03-310000936340dte:LowLevelRadioactiveWasteMemberdte:DTEElectricMemberdte:NuclearDecommissioningTrustFundMember2023-12-310000936340dte:DTEElectricMemberdte:NuclearDecommissioningTrustFundMember2024-03-310000936340dte:DTEElectricMemberdte:NuclearDecommissioningTrustFundMember2023-12-310000936340dte:DTEElectricMemberdte:NuclearDecommissioningTrustFundMember2024-01-012024-03-310000936340dte:DTEElectricMemberdte:NuclearDecommissioningTrustFundMember2023-01-012023-03-310000936340dte:DTEElectricMemberus-gaap:EquitySecuritiesMember2024-03-310000936340dte:DTEElectricMemberus-gaap:EquitySecuritiesMember2023-12-310000936340dte:DTEElectricMemberus-gaap:FixedIncomeSecuritiesMember2024-03-310000936340dte:DTEElectricMemberus-gaap:FixedIncomeSecuritiesMember2023-12-310000936340us-gaap:PrivateEquityFundsMemberdte:DTEElectricMember2024-03-310000936340us-gaap:PrivateEquityFundsMemberdte:DTEElectricMember2023-12-310000936340dte:DTEElectricMemberus-gaap:HedgeFundsMember2024-03-310000936340dte:DTEElectricMemberus-gaap:HedgeFundsMember2023-12-310000936340dte:DTEElectricMemberus-gaap:CashEquivalentsMember2024-03-310000936340dte:DTEElectricMemberus-gaap:CashEquivalentsMember2023-12-310000936340dte:NuclearDecommissioningTrustFundMemberus-gaap:FixedIncomeSecuritiesMember2024-03-310000936340us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:InterestRateContractMember2024-03-310000936340us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:InterestRateContractMember2023-12-310000936340us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:ForeignExchangeContractMember2024-03-310000936340us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:ForeignExchangeContractMember2023-12-310000936340us-gaap:DesignatedAsHedgingInstrumentMember2024-03-310000936340us-gaap:DesignatedAsHedgingInstrumentMember2023-12-310000936340us-gaap:NondesignatedMemberdte:NaturalGasCommodityContractMember2024-03-310000936340us-gaap:NondesignatedMemberdte:NaturalGasCommodityContractMember2023-12-310000936340us-gaap:NondesignatedMemberdte:ElectricityCommodityContractMember2024-03-310000936340us-gaap:NondesignatedMemberdte:ElectricityCommodityContractMember2023-12-310000936340dte:EnvironmentalandOtherCommodityContractMemberus-gaap:NondesignatedMember2024-03-310000936340dte:EnvironmentalandOtherCommodityContractMemberus-gaap:NondesignatedMember2023-12-310000936340us-gaap:NondesignatedMemberus-gaap:ForeignExchangeContractMember2024-03-310000936340us-gaap:NondesignatedMemberus-gaap:ForeignExchangeContractMember2023-12-310000936340us-gaap:NondesignatedMember2024-03-310000936340us-gaap:NondesignatedMember2023-12-310000936340dte:CurrentDerivativeAssetMember2024-03-310000936340dte:CurrentDerivativeLiabilityMember2024-03-310000936340dte:CurrentDerivativeAssetMember2023-12-310000936340dte:CurrentDerivativeLiabilityMember2023-12-310000936340dte:NoncurrentDerivativeAssetMember2024-03-310000936340dte:NoncurrentDerivativeLiabilityMember2024-03-310000936340dte:NoncurrentDerivativeAssetMember2023-12-310000936340dte:NoncurrentDerivativeLiabilityMember2023-12-310000936340us-gaap:OtherCurrentAssetsMemberus-gaap:NondesignatedMemberdte:DTEElectricMemberdte:FinancialTransmissionRightsMember2024-03-310000936340us-gaap:OtherCurrentAssetsMemberus-gaap:NondesignatedMemberdte:DTEElectricMemberdte:FinancialTransmissionRightsMember2023-12-310000936340dte:NaturalGasCommodityContractMember2024-03-310000936340dte:NaturalGasCommodityContractMember2023-12-310000936340dte:ElectricityCommodityContractMember2024-03-310000936340dte:ElectricityCommodityContractMember2023-12-310000936340dte:EnvironmentalandOtherCommodityContractMember2024-03-310000936340dte:EnvironmentalandOtherCommodityContractMember2023-12-310000936340us-gaap:InterestRateContractMember2024-03-310000936340us-gaap:InterestRateContractMember2023-12-310000936340us-gaap:ForeignExchangeContractMember2024-03-310000936340us-gaap:ForeignExchangeContractMember2023-12-310000936340dte:NaturalGasCommodityContractMemberus-gaap:SalesMember2024-01-012024-03-310000936340dte:NaturalGasCommodityContractMemberus-gaap:SalesMember2023-01-012023-03-310000936340srt:FuelMemberdte:NaturalGasCommodityContractMember2024-01-012024-03-310000936340srt:FuelMemberdte:NaturalGasCommodityContractMember2023-01-012023-03-310000936340us-gaap:SalesMemberdte:ElectricityCommodityContractMember2024-01-012024-03-310000936340us-gaap:SalesMemberdte:ElectricityCommodityContractMember2023-01-012023-03-310000936340dte:EnvironmentalandOtherCommodityContractMemberus-gaap:SalesMember2024-01-012024-03-310000936340dte:EnvironmentalandOtherCommodityContractMemberus-gaap:SalesMember2023-01-012023-03-310000936340us-gaap:SalesMemberus-gaap:ForeignExchangeContractMember2024-01-012024-03-310000936340us-gaap:SalesMemberus-gaap:ForeignExchangeContractMember2023-01-012023-03-310000936340dte:NaturalGasCommodityContractMember2024-01-012024-03-31utr:MMBTU0000936340dte:ElectricityCommodityContractMember2024-01-012024-03-31utr:MWh0000936340dte:OilCommodityContractMember2024-01-012024-03-31utr:galiso4217:CAD0000936340dte:FinancialTransmissionRightsCommodityContractMember2024-01-012024-03-310000936340dte:RenewableEnergyCommodityContractMember2024-01-012024-03-310000936340dte:CarbonEmissionsCommodityContractMember2024-01-012024-03-31utr:T0000936340dte:February20245.10SeniorNotesMaturingIn2029Memberus-gaap:SeniorNotesMember2024-02-290000936340us-gaap:MortgagesMemberdte:DTEElectricMemberdte:February20244.85MortgageBondsMaturingIn2026Member2024-02-290000936340dte:February20245.20MortgageBondsMaturingIn2034Memberus-gaap:MortgagesMemberdte:DTEElectricMember2024-02-290000936340dte:February20245.20MortgageBondsMaturingIn2034Memberus-gaap:MortgagesMember2024-02-290000936340us-gaap:MortgagesMemberdte:DTEElectricMemberdte:A2013SeriesBMortgageBondsMember2024-01-012024-03-310000936340us-gaap:MortgagesMemberdte:DTEElectricMemberdte:A2013SeriesBMortgageBondsMember2024-03-310000936340srt:ParentCompanyMemberdte:DTEEnergyRevolverMemberus-gaap:LetterOfCreditMember2024-03-310000936340srt:ParentCompanyMembersrt:MaximumMember2024-03-310000936340srt:MaximumMemberdte:DTEGasMember2024-03-310000936340srt:MaximumMemberdte:DTEElectricMember2024-03-310000936340srt:ParentCompanyMember2024-03-310000936340dte:DTEGasMember2024-03-310000936340srt:ParentCompanyMemberdte:UnsecuredRevolvingCreditFacilityExpiringInOctober2028Memberus-gaap:RevolvingCreditFacilityMember2024-03-310000936340dte:UnsecuredRevolvingCreditFacilityExpiringInOctober2028Memberdte:DTEElectricMemberus-gaap:RevolvingCreditFacilityMember2024-03-310000936340dte:UnsecuredRevolvingCreditFacilityExpiringInOctober2028Memberdte:DTEGasMemberus-gaap:RevolvingCreditFacilityMember2024-03-310000936340dte:UnsecuredRevolvingCreditFacilityExpiringInOctober2028Memberus-gaap:RevolvingCreditFacilityMember2024-03-310000936340dte:UnsecuredLetterOfCreditFacilityExpiringInJune2024Membersrt:ParentCompanyMemberus-gaap:LetterOfCreditMember2024-03-310000936340dte:UnsecuredLetterOfCreditFacilityExpiringInJune2024Memberdte:DTEElectricMemberus-gaap:LetterOfCreditMember2024-03-310000936340dte:UnsecuredLetterOfCreditFacilityExpiringInJune2024Memberdte:DTEGasMemberus-gaap:LetterOfCreditMember2024-03-310000936340dte:UnsecuredLetterOfCreditFacilityExpiringInJune2024Memberus-gaap:LetterOfCreditMember2024-03-310000936340srt:ParentCompanyMemberdte:UnsecuredLetterOfCreditFacilityExpiringInFebruary2025Memberus-gaap:LetterOfCreditMember2024-03-310000936340dte:UnsecuredLetterOfCreditFacilityExpiringInFebruary2025Memberdte:DTEElectricMemberus-gaap:LetterOfCreditMember2024-03-310000936340dte:UnsecuredLetterOfCreditFacilityExpiringInFebruary2025Memberdte:DTEGasMemberus-gaap:LetterOfCreditMember2024-03-310000936340dte:UnsecuredLetterOfCreditFacilityExpiringInFebruary2025Memberus-gaap:LetterOfCreditMember2024-03-310000936340srt:ParentCompanyMemberus-gaap:LetterOfCreditMemberdte:A150MillionUnsecuredLetterOfCreditFacilityMember2024-03-310000936340dte:DTEElectricMemberus-gaap:LetterOfCreditMemberdte:A150MillionUnsecuredLetterOfCreditFacilityMember2024-03-310000936340dte:DTEGasMemberus-gaap:LetterOfCreditMemberdte:A150MillionUnsecuredLetterOfCreditFacilityMember2024-03-310000936340us-gaap:LetterOfCreditMemberdte:A150MillionUnsecuredLetterOfCreditFacilityMember2024-03-310000936340srt:ParentCompanyMemberus-gaap:LetterOfCreditMemberdte:A100MillionUnsecuredLetterOfCreditFacilityMember2024-03-310000936340dte:DTEElectricMemberus-gaap:LetterOfCreditMemberdte:A100MillionUnsecuredLetterOfCreditFacilityMember2024-03-310000936340dte:DTEGasMemberus-gaap:LetterOfCreditMemberdte:A100MillionUnsecuredLetterOfCreditFacilityMember2024-03-310000936340us-gaap:LetterOfCreditMemberdte:A100MillionUnsecuredLetterOfCreditFacilityMember2024-03-310000936340srt:ParentCompanyMemberus-gaap:CommercialPaperMember2024-03-310000936340dte:DTEElectricMemberus-gaap:CommercialPaperMember2024-03-310000936340dte:DTEGasMemberus-gaap:CommercialPaperMember2024-03-310000936340us-gaap:CommercialPaperMember2024-03-310000936340srt:ParentCompanyMemberus-gaap:LetterOfCreditMember2024-03-310000936340dte:DTEElectricMemberus-gaap:LetterOfCreditMember2024-03-310000936340dte:DTEGasMemberus-gaap:LetterOfCreditMember2024-03-310000936340us-gaap:LetterOfCreditMember2024-03-310000936340srt:ParentCompanyMemberdte:DemandFinancingAgreementMember2024-03-310000936340srt:ParentCompanyMemberdte:DemandFinancingAgreementMember2023-12-310000936340dte:EnergyInfrastructureAssetsTwentyYearTermEndingIn2044Member2024-03-310000936340dte:DTEElectricMemberdte:EPARegulationsAndCleanWaterActSection316bCapitalExpendituresMember2024-03-31dte:sitedte:facility0000936340dte:CoalCombustionResidualAndEffluentLimitationsGuidelinesRulesCapitalExpendituresMemberdte:DTEElectricMember2024-03-310000936340dte:DTEGasMember2024-01-012024-03-310000936340dte:CleanUpCompletedandSiteClosedMemberdte:DTEGasMember2024-01-012024-03-310000936340dte:PartialClosureCompleteMemberdte:DTEGasMember2024-01-012024-03-310000936340dte:DTEGasMember2023-12-310000936340dte:ReducedEmissionsFuelGuaranteesMember2024-01-012024-03-310000936340dte:ReducedEmissionsFuelGuaranteesMember2024-03-310000936340us-gaap:GuaranteeTypeOtherMember2024-03-310000936340us-gaap:SuretyBondMember2024-03-310000936340dte:DTEElectricMemberus-gaap:SuretyBondMember2024-03-310000936340dte:EnergyTradingMemberus-gaap:SuretyBondMember2024-03-310000936340dte:EnergyTradingMemberus-gaap:SuretyBondMembersrt:MinimumMember2024-01-012024-03-310000936340srt:MaximumMemberdte:EnergyTradingMemberus-gaap:SuretyBondMember2024-01-012024-03-310000936340us-gaap:WorkforceSubjectToCollectiveBargainingArrangementsMemberus-gaap:LaborForceConcentrationRiskMember2024-03-31dte:employee0000936340us-gaap:WorkforceSubjectToCollectiveBargainingArrangementsMemberdte:DTEElectricMemberus-gaap:LaborForceConcentrationRiskMember2024-03-310000936340us-gaap:WorkforceSubjectToCollectiveBargainingArrangementsMemberus-gaap:LaborForceConcentrationRiskMember2024-01-012024-03-310000936340us-gaap:WorkforceSubjectToCollectiveBargainingArrangementsMemberdte:DTEElectricMemberus-gaap:LaborForceConcentrationRiskMember2024-01-012024-03-310000936340us-gaap:WorkforceSubjectToCollectiveBargainingArrangementsExpiringWithinOneYearMemberdte:DTEElectricMemberus-gaap:LaborForceConcentrationRiskMember2024-01-012024-03-310000936340us-gaap:WorkforceSubjectToCollectiveBargainingArrangementsExpiringWithinOneYearMemberus-gaap:LaborForceConcentrationRiskMember2024-01-012024-03-310000936340dte:DTEElectricAndConsumersEnergyCompanyMemberdte:LudingtonPlantContractDisputeMemberdte:ToshibaAmericaEnergySystemsAndToshibaCorporationMemberus-gaap:PendingLitigationMember2022-06-012022-06-300000936340dte:LudingtonPlantContractDisputeMemberdte:DTEElectricMemberus-gaap:PendingLitigationMember2022-06-012022-06-300000936340us-gaap:PensionPlansDefinedBenefitMember2024-01-012024-03-310000936340us-gaap:PensionPlansDefinedBenefitMember2023-01-012023-03-310000936340us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2024-01-012024-03-310000936340us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2023-01-012023-03-310000936340dte:DTEElectricMemberus-gaap:PensionPlansDefinedBenefitMember2024-01-012024-03-310000936340dte:DTEElectricMemberus-gaap:PensionPlansDefinedBenefitMember2023-01-012023-03-310000936340us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberdte:DTEElectricMember2024-01-012024-03-310000936340us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberdte:DTEElectricMember2023-01-012023-03-310000936340us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2024-03-310000936340us-gaap:PensionPlansDefinedBenefitMember2024-03-310000936340us-gaap:IntersegmentEliminationMemberdte:ElectricMember2024-01-012024-03-310000936340us-gaap:IntersegmentEliminationMemberdte:ElectricMember2023-01-012023-03-310000936340us-gaap:IntersegmentEliminationMemberdte:GasMember2024-01-012024-03-310000936340us-gaap:IntersegmentEliminationMemberdte:GasMember2023-01-012023-03-310000936340us-gaap:IntersegmentEliminationMemberdte:DTEVantageMember2024-01-012024-03-310000936340us-gaap:IntersegmentEliminationMemberdte:DTEVantageMember2023-01-012023-03-310000936340us-gaap:IntersegmentEliminationMemberdte:EnergyTradingMember2024-01-012024-03-310000936340us-gaap:IntersegmentEliminationMemberdte:EnergyTradingMember2023-01-012023-03-310000936340us-gaap:IntersegmentEliminationMemberus-gaap:CorporateAndOtherMember2024-01-012024-03-310000936340us-gaap:IntersegmentEliminationMemberus-gaap:CorporateAndOtherMember2023-01-012023-03-310000936340us-gaap:IntersegmentEliminationMember2024-01-012024-03-310000936340us-gaap:IntersegmentEliminationMember2023-01-012023-03-310000936340us-gaap:OperatingSegmentsMemberus-gaap:CorporateAndOtherMember2024-01-012024-03-310000936340us-gaap:OperatingSegmentsMemberus-gaap:CorporateAndOtherMember2023-01-012023-03-310000936340dte:ElectricMember2024-01-012024-03-310000936340dte:ElectricMember2023-01-012023-03-310000936340dte:GasMember2024-01-012024-03-310000936340dte:GasMember2023-01-012023-03-310000936340dte:DTEVantageMember2024-01-012024-03-310000936340dte:DTEVantageMember2023-01-012023-03-310000936340dte:EnergyTradingMember2024-01-012024-03-310000936340dte:EnergyTradingMember2023-01-012023-03-310000936340us-gaap:CorporateAndOtherMember2024-01-012024-03-310000936340us-gaap:CorporateAndOtherMember2023-01-012023-03-31

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

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.

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 during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

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.

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).

Number of shares of Common Stock outstanding at March 31, 2024:

This combined Form 10-Q is filed separately by two registrants: DTE Energy and DTE Electric. Information contained herein relating to any individual registrant is filed by such registrant solely on its own behalf. DTE Electric makes no representation as to information relating exclusively to DTE Energy.

DTE Electric, an indirect wholly-owned subsidiary of DTE Energy, meets the conditions set forth in General Instructions H(1)(a) and (b) of Form 10-Q and is therefore filing this form with the reduced disclosure format specified in General Instructions H(2) of Form 10-Q.

This combined Form 10-Q is separately filed by DTE Energy and DTE Electric. Information in this combined Form 10-Q relating to each individual Registrant is filed by such Registrant on its own behalf. DTE Electric makes no representation regarding information relating to any other companies affiliated with DTE Energy other than its own subsidiaries. Neither DTE Energy, nor any of DTE Energy’s other subsidiaries (other than DTE Electric), has any obligation in respect of DTE Electric's debt securities, and holders of such debt securities should not consider the financial resources or results of operations of DTE Energy nor any of DTE Energy’s other subsidiaries (other than DTE Electric and its own subsidiaries (in relevant circumstances)) in making a decision with respect to DTE Electric's debt securities. Similarly, none of DTE Electric nor any other subsidiary of DTE Energy has any obligation in respect to debt securities of DTE Energy. This combined Form 10-Q should be read in its entirety. No one section of this combined Form 10-Q deals with all aspects of the subject matter of this combined Form 10-Q. This combined Form 10-Q should be read in conjunction with the Consolidated Financial Statements and Combined Notes to Consolidated Financial Statements and with Management's Discussion and Analysis included in the combined DTE Energy and DTE Electric 2023 Annual Report on Form 10-K.

Certain information presented herein includes "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 with respect to the financial condition, results of operations, and businesses of the Registrants. Words such as "anticipate," "believe," "expect," "may," "could," "projected," "aspiration," "plans," and "goals" signify forward-looking statements. Forward-looking statements are not guarantees of future results and conditions, but rather are subject to numerous assumptions, risks, and uncertainties that may cause actual future results to be materially different from those contemplated, projected, estimated, or budgeted. Many factors may impact forward-looking statements of the Registrants including, but not limited to, the following:

•impact of regulation by the EPA, EGLE, the FERC, the MPSC, the NRC, and for DTE Energy, the CFTC and CARB, as well as other applicable governmental proceedings and regulations, including any associated impact on rate structures;

•the amount and timing of cost recovery allowed as a result of regulatory proceedings, related appeals, or new legislation, including legislative amendments and retail access programs;

•economic conditions and population changes in the Registrants' geographic area resulting in changes in demand, customer conservation, and thefts of electricity and, for DTE Energy, natural gas;

•the operational failure of electric or gas distribution systems or infrastructure;

•impact of volatility in prices in international steel markets and in prices of environmental attributes generated from renewable natural gas investments on the operations of DTE Vantage;

•the risk of a major safety incident;

•environmental issues, laws, regulations, and the increasing costs of remediation and compliance, including actual and potential new federal and state requirements;

•the cost of protecting assets and customer data against, or damage due to, cyber incidents and terrorism;

•health, safety, financial, environmental, and regulatory risks associated with ownership and operation of nuclear facilities;

•volatility in commodity markets, deviations in weather, and related risks impacting the results of DTE Energy's energy trading operations;

•changes in the cost and availability of coal and other raw materials, purchased power, and natural gas;

•advances in technology that produce power, store power, or reduce power consumption;

•changes in the financial condition of significant customers and strategic partners;

•the potential for losses on investments, including nuclear decommissioning trust and benefit plan assets and the related increases in future expense and contributions;

•access to capital markets and the results of other financing efforts which can be affected by credit agency ratings;

•instability in capital markets which could impact availability of short and long-term financing;

•impacts of inflation and the timing and extent of changes in interest rates;

•the level of borrowings;

•the potential for increased costs or delays in completion of significant capital projects;

•changes in, and application of, federal, state, and local tax laws and their interpretations, including the Internal Revenue Code, regulations, rulings, court proceedings, and audits;

•the effects of weather and other natural phenomena, including climate change, on operations and sales to customers, and purchases from suppliers;

•unplanned outages at our generation plants;

•employee relations and the impact of collective bargaining agreements;

•the availability, cost, coverage, and terms of insurance and stability of insurance providers;

•cost reduction efforts and the maximization of generation and distribution system performance;

•the effects of competition;

•changes in and application of accounting standards and financial reporting regulations;

•changes in federal or state laws and their interpretation with respect to regulation, energy policy, and other business issues;

•successful execution of new business development and future growth plans;

•contract disputes, binding arbitration, litigation, and related appeals;

•the ability of the electric and gas utilities to achieve goals for carbon emission reductions; and

•the risks discussed in the Registrants' public filings with the Securities and Exchange Commission.

New factors emerge from time to time. The Registrants cannot predict what factors may arise or how such factors may cause results to differ materially from those contained in any forward-looking statement. Any forward-looking statements speak only as of the date on which such statements are made. The Registrants undertake no obligation to update any forward-looking statement to reflect events or circumstances after the date on which such statement is made or to reflect the occurrence of unanticipated events.

Item 1. Financial Statements