Cumulative Preferred Security, Series DSeptember 30, 2023false2023Q3December 31000110935700000226060000078100000000946600011359710000079732000002787900000081920.250.250.250.250.25111111111111111111110000——————————————————————00011093572023-01-012023-09-300001109357exc:CommonwealthEdisonCoMember2023-01-012023-09-300001109357exc:PecoEnergyCoMember2023-01-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMember2023-01-012023-09-300001109357exc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357stpr:DCexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357stpr:VAexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMember2023-01-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberstpr:DE2023-01-012023-09-300001109357stpr:VAexc:DelmarvaPowerandLightCompanyMember2023-01-012023-09-300001109357exc:AtlanticCityElectricCompanyMember2023-01-012023-09-3000011093572023-09-30xbrli:shares0001109357exc:CommonwealthEdisonCoMember2023-09-300001109357exc:PecoEnergyCoMember2023-09-300001109357exc:BaltimoreGasAndElectricCompanyMember2023-09-300001109357exc:PotomacElectricPowerCompanyMember2023-09-300001109357exc:DelmarvaPowerandLightCompanyMember2023-09-300001109357exc:AtlanticCityElectricCompanyMember2023-09-300001109357us-gaap:ElectricityUsRegulatedMember2023-07-012023-09-30iso4217:USD0001109357us-gaap:ElectricityUsRegulatedMember2022-07-012022-09-300001109357us-gaap:ElectricityUsRegulatedMember2023-01-012023-09-300001109357us-gaap:ElectricityUsRegulatedMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMember2022-01-012022-09-3000011093572023-07-012023-09-3000011093572022-07-012022-09-3000011093572022-01-012022-09-300001109357us-gaap:RelatedPartyMember2023-07-012023-09-300001109357us-gaap:RelatedPartyMember2022-07-012022-09-300001109357us-gaap:RelatedPartyMember2023-01-012023-09-300001109357us-gaap:RelatedPartyMember2022-01-012022-09-30iso4217:USDxbrli:shares00011093572022-12-3100011093572021-12-3100011093572022-09-300001109357us-gaap:NonrelatedPartyMember2023-09-300001109357us-gaap:NonrelatedPartyMember2022-12-310001109357us-gaap:RelatedPartyMember2023-09-300001109357us-gaap:RelatedPartyMember2022-12-310001109357us-gaap:CommonStockMember2022-12-310001109357us-gaap:TreasuryStockCommonMember2022-12-310001109357us-gaap:RetainedEarningsMember2022-12-310001109357us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-12-310001109357us-gaap:NoncontrollingInterestMember2022-12-310001109357us-gaap:RetainedEarningsMember2023-01-012023-03-310001109357us-gaap:NoncontrollingInterestMember2023-01-012023-03-3100011093572023-01-012023-03-310001109357us-gaap:CommonStockMember2023-01-012023-03-310001109357us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-01-012023-03-3100011093572023-03-310001109357us-gaap:CommonStockMember2023-03-310001109357us-gaap:TreasuryStockCommonMember2023-03-310001109357us-gaap:RetainedEarningsMember2023-03-310001109357us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-03-310001109357us-gaap:NoncontrollingInterestMember2023-03-310001109357us-gaap:RetainedEarningsMember2023-04-012023-06-300001109357us-gaap:NoncontrollingInterestMember2023-04-012023-06-3000011093572023-04-012023-06-300001109357us-gaap:CommonStockMember2023-04-012023-06-300001109357us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-04-012023-06-3000011093572023-06-300001109357us-gaap:CommonStockMember2023-06-300001109357us-gaap:TreasuryStockCommonMember2023-06-300001109357us-gaap:RetainedEarningsMember2023-06-300001109357us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-06-300001109357us-gaap:NoncontrollingInterestMember2023-06-300001109357us-gaap:RetainedEarningsMember2023-07-012023-09-300001109357us-gaap:CommonStockMember2023-07-012023-09-300001109357us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-07-012023-09-300001109357us-gaap:CommonStockMember2023-09-300001109357us-gaap:TreasuryStockCommonMember2023-09-300001109357us-gaap:RetainedEarningsMember2023-09-300001109357us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-09-300001109357us-gaap:NoncontrollingInterestMember2023-09-300001109357us-gaap:CommonStockMember2021-12-310001109357us-gaap:TreasuryStockCommonMember2021-12-310001109357us-gaap:RetainedEarningsMember2021-12-310001109357us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-12-310001109357us-gaap:NoncontrollingInterestMember2021-12-310001109357us-gaap:RetainedEarningsMember2022-01-012022-03-310001109357us-gaap:NoncontrollingInterestMember2022-01-012022-03-3100011093572022-01-012022-03-310001109357us-gaap:CommonStockMembersrt:RevisionOfPriorPeriodErrorCorrectionAdjustmentMember2022-01-012022-03-310001109357srt:RevisionOfPriorPeriodErrorCorrectionAdjustmentMember2022-01-012022-03-310001109357us-gaap:CommonStockMember2022-01-012022-03-310001109357us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-01-012022-03-3100011093572022-03-310001109357us-gaap:CommonStockMember2022-03-310001109357us-gaap:TreasuryStockCommonMember2022-03-310001109357us-gaap:RetainedEarningsMember2022-03-310001109357us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-03-310001109357us-gaap:NoncontrollingInterestMember2022-03-310001109357us-gaap:RetainedEarningsMember2022-04-012022-06-300001109357us-gaap:NoncontrollingInterestMember2022-04-012022-06-3000011093572022-04-012022-06-300001109357us-gaap:CommonStockMember2022-04-012022-06-300001109357srt:RevisionOfPriorPeriodErrorCorrectionAdjustmentMember2022-04-012022-06-300001109357us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-04-012022-06-3000011093572022-06-300001109357us-gaap:CommonStockMember2022-06-300001109357us-gaap:TreasuryStockCommonMember2022-06-300001109357us-gaap:RetainedEarningsMember2022-06-300001109357us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-06-300001109357us-gaap:NoncontrollingInterestMember2022-06-300001109357us-gaap:RetainedEarningsMember2022-07-012022-09-300001109357us-gaap:NoncontrollingInterestMember2022-07-012022-09-300001109357us-gaap:CommonStockMember2022-07-012022-09-300001109357us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-07-012022-09-300001109357us-gaap:CommonStockMember2022-09-300001109357us-gaap:TreasuryStockCommonMember2022-09-300001109357us-gaap:RetainedEarningsMember2022-09-300001109357us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-09-300001109357us-gaap:NoncontrollingInterestMember2022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMember2022-12-310001109357exc:CommonwealthEdisonCoMember2021-12-310001109357exc:CommonwealthEdisonCoMember2022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:RelatedPartyMember2023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:RelatedPartyMember2022-12-310001109357exc:CommonwealthEdisonCoMemberus-gaap:NonrelatedPartyMember2023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NonrelatedPartyMember2022-12-310001109357exc:CommonwealthEdisonCoMemberus-gaap:CommonStockMember2022-12-310001109357exc:CommonwealthEdisonCoMemberus-gaap:OtherAdditionalCapitalMember2022-12-310001109357exc:CommonwealthEdisonCoMemberus-gaap:RetainedEarningsMember2022-12-310001109357exc:CommonwealthEdisonCoMemberus-gaap:RetainedEarningsMember2023-01-012023-03-310001109357exc:CommonwealthEdisonCoMember2023-01-012023-03-310001109357exc:CommonwealthEdisonCoMemberus-gaap:OtherAdditionalCapitalMember2023-01-012023-03-310001109357exc:CommonwealthEdisonCoMemberus-gaap:CommonStockMember2023-03-310001109357exc:CommonwealthEdisonCoMemberus-gaap:OtherAdditionalCapitalMember2023-03-310001109357exc:CommonwealthEdisonCoMemberus-gaap:RetainedEarningsMember2023-03-310001109357exc:CommonwealthEdisonCoMember2023-03-310001109357exc:CommonwealthEdisonCoMemberus-gaap:RetainedEarningsMember2023-04-012023-06-300001109357exc:CommonwealthEdisonCoMember2023-04-012023-06-300001109357exc:CommonwealthEdisonCoMemberus-gaap:OtherAdditionalCapitalMember2023-04-012023-06-300001109357exc:CommonwealthEdisonCoMemberus-gaap:CommonStockMember2023-06-300001109357exc:CommonwealthEdisonCoMemberus-gaap:OtherAdditionalCapitalMember2023-06-300001109357exc:CommonwealthEdisonCoMemberus-gaap:RetainedEarningsMember2023-06-300001109357exc:CommonwealthEdisonCoMember2023-06-300001109357exc:CommonwealthEdisonCoMemberus-gaap:RetainedEarningsMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:OtherAdditionalCapitalMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:CommonStockMember2023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:OtherAdditionalCapitalMember2023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:RetainedEarningsMember2023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:CommonStockMember2021-12-310001109357exc:CommonwealthEdisonCoMemberus-gaap:OtherAdditionalCapitalMember2021-12-310001109357exc:CommonwealthEdisonCoMemberus-gaap:RetainedEarningsMember2021-12-310001109357exc:CommonwealthEdisonCoMemberus-gaap:RetainedEarningsMember2022-01-012022-03-310001109357exc:CommonwealthEdisonCoMember2022-01-012022-03-310001109357exc:CommonwealthEdisonCoMemberus-gaap:OtherAdditionalCapitalMember2022-01-012022-03-310001109357exc:CommonwealthEdisonCoMemberus-gaap:CommonStockMember2022-03-310001109357exc:CommonwealthEdisonCoMemberus-gaap:OtherAdditionalCapitalMember2022-03-310001109357exc:CommonwealthEdisonCoMemberus-gaap:RetainedEarningsMember2022-03-310001109357exc:CommonwealthEdisonCoMember2022-03-310001109357exc:CommonwealthEdisonCoMemberus-gaap:RetainedEarningsMember2022-04-012022-06-300001109357exc:CommonwealthEdisonCoMember2022-04-012022-06-300001109357exc:CommonwealthEdisonCoMemberus-gaap:OtherAdditionalCapitalMember2022-04-012022-06-300001109357exc:CommonwealthEdisonCoMemberus-gaap:CommonStockMember2022-06-300001109357exc:CommonwealthEdisonCoMemberus-gaap:OtherAdditionalCapitalMember2022-06-300001109357exc:CommonwealthEdisonCoMemberus-gaap:RetainedEarningsMember2022-06-300001109357exc:CommonwealthEdisonCoMember2022-06-300001109357exc:CommonwealthEdisonCoMemberus-gaap:RetainedEarningsMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:OtherAdditionalCapitalMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:CommonStockMember2022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:OtherAdditionalCapitalMember2022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:RetainedEarningsMember2022-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357exc:PecoEnergyCoMember2023-07-012023-09-300001109357exc:PecoEnergyCoMember2022-07-012022-09-300001109357exc:PecoEnergyCoMember2022-01-012022-09-300001109357exc:PecoEnergyCoMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357exc:PecoEnergyCoMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357exc:PecoEnergyCoMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357exc:PecoEnergyCoMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357exc:PecoEnergyCoMember2022-12-310001109357exc:PecoEnergyCoMember2021-12-310001109357exc:PecoEnergyCoMember2022-09-300001109357exc:PecoEnergyCoMemberus-gaap:RelatedPartyMember2023-09-300001109357exc:PecoEnergyCoMemberus-gaap:RelatedPartyMember2022-12-310001109357us-gaap:NonrelatedPartyMemberexc:PecoEnergyCoMember2023-09-300001109357us-gaap:NonrelatedPartyMemberexc:PecoEnergyCoMember2022-12-310001109357us-gaap:CommonStockMemberexc:PecoEnergyCoMember2022-12-310001109357us-gaap:RetainedEarningsMemberexc:PecoEnergyCoMember2022-12-310001109357us-gaap:RetainedEarningsMemberexc:PecoEnergyCoMember2023-01-012023-03-310001109357exc:PecoEnergyCoMember2023-01-012023-03-310001109357us-gaap:CommonStockMemberexc:PecoEnergyCoMember2023-01-012023-03-310001109357us-gaap:CommonStockMemberexc:PecoEnergyCoMember2023-03-310001109357us-gaap:RetainedEarningsMemberexc:PecoEnergyCoMember2023-03-310001109357exc:PecoEnergyCoMember2023-03-310001109357us-gaap:RetainedEarningsMemberexc:PecoEnergyCoMember2023-04-012023-06-300001109357exc:PecoEnergyCoMember2023-04-012023-06-300001109357us-gaap:CommonStockMemberexc:PecoEnergyCoMember2023-06-300001109357us-gaap:RetainedEarningsMemberexc:PecoEnergyCoMember2023-06-300001109357exc:PecoEnergyCoMember2023-06-300001109357us-gaap:RetainedEarningsMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357us-gaap:CommonStockMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357us-gaap:CommonStockMemberexc:PecoEnergyCoMember2023-09-300001109357us-gaap:RetainedEarningsMemberexc:PecoEnergyCoMember2023-09-300001109357us-gaap:CommonStockMemberexc:PecoEnergyCoMember2021-12-310001109357us-gaap:RetainedEarningsMemberexc:PecoEnergyCoMember2021-12-310001109357us-gaap:RetainedEarningsMemberexc:PecoEnergyCoMember2022-01-012022-03-310001109357exc:PecoEnergyCoMember2022-01-012022-03-310001109357us-gaap:CommonStockMemberexc:PecoEnergyCoMember2022-01-012022-03-310001109357us-gaap:CommonStockMemberexc:PecoEnergyCoMember2022-03-310001109357us-gaap:RetainedEarningsMemberexc:PecoEnergyCoMember2022-03-310001109357exc:PecoEnergyCoMember2022-03-310001109357us-gaap:RetainedEarningsMemberexc:PecoEnergyCoMember2022-04-012022-06-300001109357exc:PecoEnergyCoMember2022-04-012022-06-300001109357us-gaap:CommonStockMemberexc:PecoEnergyCoMember2022-06-300001109357us-gaap:RetainedEarningsMemberexc:PecoEnergyCoMember2022-06-300001109357exc:PecoEnergyCoMember2022-06-300001109357us-gaap:RetainedEarningsMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357us-gaap:CommonStockMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357us-gaap:CommonStockMemberexc:PecoEnergyCoMember2022-09-300001109357us-gaap:RetainedEarningsMemberexc:PecoEnergyCoMember2022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMember2023-07-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMember2022-07-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMember2023-01-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMember2022-01-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMember2023-07-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMember2022-07-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMember2022-01-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMember2022-12-310001109357exc:BaltimoreGasAndElectricCompanyMember2021-12-310001109357exc:BaltimoreGasAndElectricCompanyMember2022-09-300001109357us-gaap:NonrelatedPartyMemberexc:BaltimoreGasAndElectricCompanyMember2023-09-300001109357us-gaap:NonrelatedPartyMemberexc:BaltimoreGasAndElectricCompanyMember2022-12-310001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:RelatedPartyMember2023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:RelatedPartyMember2022-12-310001109357us-gaap:CommonStockMemberexc:BaltimoreGasAndElectricCompanyMember2022-12-310001109357us-gaap:RetainedEarningsMemberexc:BaltimoreGasAndElectricCompanyMember2022-12-310001109357us-gaap:RetainedEarningsMemberexc:BaltimoreGasAndElectricCompanyMember2023-01-012023-03-310001109357exc:BaltimoreGasAndElectricCompanyMember2023-01-012023-03-310001109357us-gaap:CommonStockMemberexc:BaltimoreGasAndElectricCompanyMember2023-01-012023-03-310001109357us-gaap:CommonStockMemberexc:BaltimoreGasAndElectricCompanyMember2023-03-310001109357us-gaap:RetainedEarningsMemberexc:BaltimoreGasAndElectricCompanyMember2023-03-310001109357exc:BaltimoreGasAndElectricCompanyMember2023-03-310001109357us-gaap:RetainedEarningsMemberexc:BaltimoreGasAndElectricCompanyMember2023-04-012023-06-300001109357exc:BaltimoreGasAndElectricCompanyMember2023-04-012023-06-300001109357us-gaap:CommonStockMemberexc:BaltimoreGasAndElectricCompanyMember2023-06-300001109357us-gaap:RetainedEarningsMemberexc:BaltimoreGasAndElectricCompanyMember2023-06-300001109357exc:BaltimoreGasAndElectricCompanyMember2023-06-300001109357us-gaap:RetainedEarningsMemberexc:BaltimoreGasAndElectricCompanyMember2023-07-012023-09-300001109357us-gaap:CommonStockMemberexc:BaltimoreGasAndElectricCompanyMember2023-09-300001109357us-gaap:RetainedEarningsMemberexc:BaltimoreGasAndElectricCompanyMember2023-09-300001109357us-gaap:CommonStockMemberexc:BaltimoreGasAndElectricCompanyMember2021-12-310001109357us-gaap:RetainedEarningsMemberexc:BaltimoreGasAndElectricCompanyMember2021-12-310001109357us-gaap:RetainedEarningsMemberexc:BaltimoreGasAndElectricCompanyMember2022-01-012022-03-310001109357exc:BaltimoreGasAndElectricCompanyMember2022-01-012022-03-310001109357us-gaap:CommonStockMemberexc:BaltimoreGasAndElectricCompanyMember2022-03-310001109357us-gaap:RetainedEarningsMemberexc:BaltimoreGasAndElectricCompanyMember2022-03-310001109357exc:BaltimoreGasAndElectricCompanyMember2022-03-310001109357us-gaap:RetainedEarningsMemberexc:BaltimoreGasAndElectricCompanyMember2022-04-012022-06-300001109357exc:BaltimoreGasAndElectricCompanyMember2022-04-012022-06-300001109357us-gaap:CommonStockMemberexc:BaltimoreGasAndElectricCompanyMember2022-04-012022-06-300001109357us-gaap:CommonStockMemberexc:BaltimoreGasAndElectricCompanyMember2022-06-300001109357us-gaap:RetainedEarningsMemberexc:BaltimoreGasAndElectricCompanyMember2022-06-300001109357exc:BaltimoreGasAndElectricCompanyMember2022-06-300001109357us-gaap:RetainedEarningsMemberexc:BaltimoreGasAndElectricCompanyMember2022-07-012022-09-300001109357us-gaap:CommonStockMemberexc:BaltimoreGasAndElectricCompanyMember2022-09-300001109357us-gaap:RetainedEarningsMemberexc:BaltimoreGasAndElectricCompanyMember2022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMember2022-12-310001109357exc:PepcoHoldingsLLCMember2021-12-310001109357exc:PepcoHoldingsLLCMember2023-09-300001109357exc:PepcoHoldingsLLCMember2022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:RelatedPartyMember2023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:RelatedPartyMember2022-12-310001109357exc:PepcoHoldingsLLCMemberus-gaap:NonrelatedPartyMember2023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NonrelatedPartyMember2022-12-310001109357exc:PepcoHoldingsLLCMemberexc:MembershipInterestMember2022-12-310001109357us-gaap:RetainedEarningsMemberexc:PepcoHoldingsLLCMember2022-12-310001109357us-gaap:RetainedEarningsMemberexc:PepcoHoldingsLLCMember2023-01-012023-03-310001109357exc:PepcoHoldingsLLCMember2023-01-012023-03-310001109357exc:PepcoHoldingsLLCMemberexc:MembershipInterestMember2023-01-012023-03-310001109357exc:PepcoHoldingsLLCMemberexc:MembershipInterestMember2023-03-310001109357us-gaap:RetainedEarningsMemberexc:PepcoHoldingsLLCMember2023-03-310001109357exc:PepcoHoldingsLLCMember2023-03-310001109357us-gaap:RetainedEarningsMemberexc:PepcoHoldingsLLCMember2023-04-012023-06-300001109357exc:PepcoHoldingsLLCMember2023-04-012023-06-300001109357exc:PepcoHoldingsLLCMemberexc:MembershipInterestMember2023-06-300001109357us-gaap:RetainedEarningsMemberexc:PepcoHoldingsLLCMember2023-06-300001109357exc:PepcoHoldingsLLCMember2023-06-300001109357us-gaap:RetainedEarningsMemberexc:PepcoHoldingsLLCMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberexc:MembershipInterestMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberexc:MembershipInterestMember2023-09-300001109357us-gaap:RetainedEarningsMemberexc:PepcoHoldingsLLCMember2023-09-300001109357exc:PepcoHoldingsLLCMemberexc:MembershipInterestMember2021-12-310001109357us-gaap:RetainedEarningsMemberexc:PepcoHoldingsLLCMember2021-12-310001109357us-gaap:RetainedEarningsMemberexc:PepcoHoldingsLLCMember2022-01-012022-03-310001109357exc:PepcoHoldingsLLCMember2022-01-012022-03-310001109357exc:PepcoHoldingsLLCMemberexc:MembershipInterestMember2022-01-012022-03-310001109357exc:PepcoHoldingsLLCMemberexc:MembershipInterestMember2022-03-310001109357us-gaap:RetainedEarningsMemberexc:PepcoHoldingsLLCMember2022-03-310001109357exc:PepcoHoldingsLLCMember2022-03-310001109357us-gaap:RetainedEarningsMemberexc:PepcoHoldingsLLCMember2022-04-012022-06-300001109357exc:PepcoHoldingsLLCMember2022-04-012022-06-300001109357exc:PepcoHoldingsLLCMemberexc:MembershipInterestMember2022-06-300001109357us-gaap:RetainedEarningsMemberexc:PepcoHoldingsLLCMember2022-06-300001109357exc:PepcoHoldingsLLCMember2022-06-300001109357us-gaap:RetainedEarningsMemberexc:PepcoHoldingsLLCMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberexc:MembershipInterestMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberexc:MembershipInterestMember2022-09-300001109357us-gaap:RetainedEarningsMemberexc:PepcoHoldingsLLCMember2022-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357exc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357exc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357exc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357exc:PotomacElectricPowerCompanyMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357exc:PotomacElectricPowerCompanyMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357exc:PotomacElectricPowerCompanyMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357exc:PotomacElectricPowerCompanyMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357exc:PotomacElectricPowerCompanyMember2022-12-310001109357exc:PotomacElectricPowerCompanyMember2021-12-310001109357exc:PotomacElectricPowerCompanyMember2022-09-300001109357exc:PotomacElectricPowerCompanyMemberus-gaap:RelatedPartyMember2023-09-300001109357exc:PotomacElectricPowerCompanyMemberus-gaap:RelatedPartyMember2022-12-310001109357us-gaap:NonrelatedPartyMemberexc:PotomacElectricPowerCompanyMember2023-09-300001109357us-gaap:NonrelatedPartyMemberexc:PotomacElectricPowerCompanyMember2022-12-310001109357us-gaap:CommonStockMemberexc:PotomacElectricPowerCompanyMember2022-12-310001109357us-gaap:RetainedEarningsMemberexc:PotomacElectricPowerCompanyMember2022-12-310001109357us-gaap:RetainedEarningsMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-03-310001109357exc:PotomacElectricPowerCompanyMember2023-01-012023-03-310001109357us-gaap:CommonStockMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-03-310001109357us-gaap:CommonStockMemberexc:PotomacElectricPowerCompanyMember2023-03-310001109357us-gaap:RetainedEarningsMemberexc:PotomacElectricPowerCompanyMember2023-03-310001109357exc:PotomacElectricPowerCompanyMember2023-03-310001109357us-gaap:RetainedEarningsMemberexc:PotomacElectricPowerCompanyMember2023-04-012023-06-300001109357exc:PotomacElectricPowerCompanyMember2023-04-012023-06-300001109357us-gaap:CommonStockMemberexc:PotomacElectricPowerCompanyMember2023-06-300001109357us-gaap:RetainedEarningsMemberexc:PotomacElectricPowerCompanyMember2023-06-300001109357exc:PotomacElectricPowerCompanyMember2023-06-300001109357us-gaap:RetainedEarningsMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357us-gaap:CommonStockMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357us-gaap:CommonStockMemberexc:PotomacElectricPowerCompanyMember2023-09-300001109357us-gaap:RetainedEarningsMemberexc:PotomacElectricPowerCompanyMember2023-09-300001109357us-gaap:CommonStockMemberexc:PotomacElectricPowerCompanyMember2021-12-310001109357us-gaap:RetainedEarningsMemberexc:PotomacElectricPowerCompanyMember2021-12-310001109357us-gaap:RetainedEarningsMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-03-310001109357exc:PotomacElectricPowerCompanyMember2022-01-012022-03-310001109357us-gaap:CommonStockMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-03-310001109357us-gaap:CommonStockMemberexc:PotomacElectricPowerCompanyMember2022-03-310001109357us-gaap:RetainedEarningsMemberexc:PotomacElectricPowerCompanyMember2022-03-310001109357exc:PotomacElectricPowerCompanyMember2022-03-310001109357us-gaap:RetainedEarningsMemberexc:PotomacElectricPowerCompanyMember2022-04-012022-06-300001109357exc:PotomacElectricPowerCompanyMember2022-04-012022-06-300001109357us-gaap:CommonStockMemberexc:PotomacElectricPowerCompanyMember2022-06-300001109357us-gaap:RetainedEarningsMemberexc:PotomacElectricPowerCompanyMember2022-06-300001109357exc:PotomacElectricPowerCompanyMember2022-06-300001109357us-gaap:RetainedEarningsMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357us-gaap:CommonStockMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357us-gaap:CommonStockMemberexc:PotomacElectricPowerCompanyMember2022-09-300001109357us-gaap:RetainedEarningsMemberexc:PotomacElectricPowerCompanyMember2022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMember2023-07-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMember2022-07-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMember2023-01-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMember2022-01-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMember2023-07-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMember2022-07-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMember2022-01-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMember2022-12-310001109357exc:DelmarvaPowerandLightCompanyMember2021-12-310001109357exc:DelmarvaPowerandLightCompanyMember2022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:RelatedPartyMember2023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:RelatedPartyMember2022-12-310001109357us-gaap:NonrelatedPartyMemberexc:DelmarvaPowerandLightCompanyMember2023-09-300001109357us-gaap:NonrelatedPartyMemberexc:DelmarvaPowerandLightCompanyMember2022-12-310001109357us-gaap:CommonStockMemberexc:DelmarvaPowerandLightCompanyMember2022-12-310001109357us-gaap:RetainedEarningsMemberexc:DelmarvaPowerandLightCompanyMember2022-12-310001109357us-gaap:RetainedEarningsMemberexc:DelmarvaPowerandLightCompanyMember2023-01-012023-03-310001109357exc:DelmarvaPowerandLightCompanyMember2023-01-012023-03-310001109357us-gaap:CommonStockMemberexc:DelmarvaPowerandLightCompanyMember2023-01-012023-03-310001109357us-gaap:CommonStockMemberexc:DelmarvaPowerandLightCompanyMember2023-03-310001109357us-gaap:RetainedEarningsMemberexc:DelmarvaPowerandLightCompanyMember2023-03-310001109357exc:DelmarvaPowerandLightCompanyMember2023-03-310001109357us-gaap:RetainedEarningsMemberexc:DelmarvaPowerandLightCompanyMember2023-04-012023-06-300001109357exc:DelmarvaPowerandLightCompanyMember2023-04-012023-06-300001109357us-gaap:CommonStockMemberexc:DelmarvaPowerandLightCompanyMember2023-06-300001109357us-gaap:RetainedEarningsMemberexc:DelmarvaPowerandLightCompanyMember2023-06-300001109357exc:DelmarvaPowerandLightCompanyMember2023-06-300001109357us-gaap:RetainedEarningsMemberexc:DelmarvaPowerandLightCompanyMember2023-07-012023-09-300001109357us-gaap:CommonStockMemberexc:DelmarvaPowerandLightCompanyMember2023-09-300001109357us-gaap:RetainedEarningsMemberexc:DelmarvaPowerandLightCompanyMember2023-09-300001109357us-gaap:CommonStockMemberexc:DelmarvaPowerandLightCompanyMember2021-12-310001109357us-gaap:RetainedEarningsMemberexc:DelmarvaPowerandLightCompanyMember2021-12-310001109357us-gaap:RetainedEarningsMemberexc:DelmarvaPowerandLightCompanyMember2022-01-012022-03-310001109357exc:DelmarvaPowerandLightCompanyMember2022-01-012022-03-310001109357us-gaap:CommonStockMemberexc:DelmarvaPowerandLightCompanyMember2022-01-012022-03-310001109357us-gaap:CommonStockMemberexc:DelmarvaPowerandLightCompanyMember2022-03-310001109357us-gaap:RetainedEarningsMemberexc:DelmarvaPowerandLightCompanyMember2022-03-310001109357exc:DelmarvaPowerandLightCompanyMember2022-03-310001109357us-gaap:RetainedEarningsMemberexc:DelmarvaPowerandLightCompanyMember2022-04-012022-06-300001109357exc:DelmarvaPowerandLightCompanyMember2022-04-012022-06-300001109357us-gaap:CommonStockMemberexc:DelmarvaPowerandLightCompanyMember2022-06-300001109357us-gaap:RetainedEarningsMemberexc:DelmarvaPowerandLightCompanyMember2022-06-300001109357exc:DelmarvaPowerandLightCompanyMember2022-06-300001109357us-gaap:RetainedEarningsMemberexc:DelmarvaPowerandLightCompanyMember2022-07-012022-09-300001109357us-gaap:CommonStockMemberexc:DelmarvaPowerandLightCompanyMember2022-07-012022-09-300001109357us-gaap:CommonStockMemberexc:DelmarvaPowerandLightCompanyMember2022-09-300001109357us-gaap:RetainedEarningsMemberexc:DelmarvaPowerandLightCompanyMember2022-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:AtlanticCityElectricCompanyMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357exc:AtlanticCityElectricCompanyMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357exc:AtlanticCityElectricCompanyMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357exc:AtlanticCityElectricCompanyMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357exc:AtlanticCityElectricCompanyMember2022-12-310001109357exc:AtlanticCityElectricCompanyMember2021-12-310001109357exc:AtlanticCityElectricCompanyMember2022-09-300001109357exc:AtlanticCityElectricCompanyMemberus-gaap:RelatedPartyMember2023-09-300001109357exc:AtlanticCityElectricCompanyMemberus-gaap:RelatedPartyMember2022-12-310001109357us-gaap:NonrelatedPartyMemberexc:AtlanticCityElectricCompanyMember2023-09-300001109357us-gaap:NonrelatedPartyMemberexc:AtlanticCityElectricCompanyMember2022-12-310001109357us-gaap:CommonStockMemberexc:AtlanticCityElectricCompanyMember2022-12-310001109357us-gaap:RetainedEarningsMemberexc:AtlanticCityElectricCompanyMember2022-12-310001109357us-gaap:RetainedEarningsMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-03-310001109357exc:AtlanticCityElectricCompanyMember2023-01-012023-03-310001109357us-gaap:CommonStockMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-03-310001109357us-gaap:CommonStockMemberexc:AtlanticCityElectricCompanyMember2023-03-310001109357us-gaap:RetainedEarningsMemberexc:AtlanticCityElectricCompanyMember2023-03-310001109357exc:AtlanticCityElectricCompanyMember2023-03-310001109357us-gaap:RetainedEarningsMemberexc:AtlanticCityElectricCompanyMember2023-04-012023-06-300001109357exc:AtlanticCityElectricCompanyMember2023-04-012023-06-300001109357us-gaap:CommonStockMemberexc:AtlanticCityElectricCompanyMember2023-06-300001109357us-gaap:RetainedEarningsMemberexc:AtlanticCityElectricCompanyMember2023-06-300001109357exc:AtlanticCityElectricCompanyMember2023-06-300001109357us-gaap:RetainedEarningsMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357us-gaap:CommonStockMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357us-gaap:CommonStockMemberexc:AtlanticCityElectricCompanyMember2023-09-300001109357us-gaap:RetainedEarningsMemberexc:AtlanticCityElectricCompanyMember2023-09-300001109357us-gaap:CommonStockMemberexc:AtlanticCityElectricCompanyMember2021-12-310001109357us-gaap:RetainedEarningsMemberexc:AtlanticCityElectricCompanyMember2021-12-310001109357us-gaap:RetainedEarningsMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-03-310001109357exc:AtlanticCityElectricCompanyMember2022-01-012022-03-310001109357us-gaap:CommonStockMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-03-310001109357us-gaap:CommonStockMemberexc:AtlanticCityElectricCompanyMember2022-03-310001109357us-gaap:RetainedEarningsMemberexc:AtlanticCityElectricCompanyMember2022-03-310001109357exc:AtlanticCityElectricCompanyMember2022-03-310001109357us-gaap:RetainedEarningsMemberexc:AtlanticCityElectricCompanyMember2022-04-012022-06-300001109357exc:AtlanticCityElectricCompanyMember2022-04-012022-06-300001109357us-gaap:CommonStockMemberexc:AtlanticCityElectricCompanyMember2022-06-300001109357us-gaap:RetainedEarningsMemberexc:AtlanticCityElectricCompanyMember2022-06-300001109357exc:AtlanticCityElectricCompanyMember2022-06-300001109357us-gaap:RetainedEarningsMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357us-gaap:CommonStockMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357us-gaap:CommonStockMemberexc:AtlanticCityElectricCompanyMember2022-09-300001109357us-gaap:RetainedEarningsMemberexc:AtlanticCityElectricCompanyMember2022-09-300001109357exc:ExelonGenerationCoLLCMember2023-07-012023-09-300001109357exc:ExelonGenerationCoLLCMember2023-01-012023-09-300001109357exc:ExelonGenerationCoLLCMember2022-07-012022-09-3000011093572022-02-012022-09-300001109357exc:ExelonGenerationCoLLCMember2022-02-012022-09-300001109357us-gaap:RelatedPartyMemberexc:ExelonGenerationCoLLCMember2023-07-012023-09-300001109357us-gaap:RelatedPartyMemberexc:ExelonGenerationCoLLCMember2023-01-012023-09-300001109357us-gaap:RelatedPartyMemberexc:ExelonGenerationCoLLCMember2022-07-012022-09-300001109357exc:ExelonGenerationCoLLCMember2022-01-012022-09-300001109357us-gaap:RelatedPartyMemberexc:ExelonGenerationCoLLCMember2022-01-012022-09-300001109357exc:ExelonGenerationCoLLCMember2022-12-310001109357exc:ExelonGenerationCoLLCMember2023-09-300001109357exc:ExelonGenerationCoLLCMember2022-02-010001109357exc:Illinois2022ElectricDistributionBaseRateCaseMemberexc:CommonwealthEdisonCoMember2022-04-152022-04-150001109357exc:Illinois2022ElectricDistributionBaseRateCaseMemberexc:CommonwealthEdisonCoMember2022-11-172022-11-17xbrli:pure0001109357exc:PecoEnergyCoMemberexc:Pennsylvania2022NaturalGasDistributionBaseRateCaseMember2022-03-312022-03-310001109357exc:PecoEnergyCoMemberexc:Pennsylvania2022NaturalGasDistributionBaseRateCaseMember2022-10-272022-10-270001109357exc:BaltimoreGasAndElectricCompanyMemberexc:Maryland2020ElectricDistributionBaseRateCaseMember2020-09-112020-09-110001109357exc:BaltimoreGasAndElectricCompanyMemberexc:Maryland2020ElectricDistributionBaseRateCaseMember2020-12-162020-12-160001109357exc:BaltimoreGasAndElectricCompanyMemberexc:Maryland2020GasDistributionBaseRateCaseMember2020-09-112020-09-110001109357exc:BaltimoreGasAndElectricCompanyMemberexc:Maryland2020GasDistributionBaseRateCaseMember2020-12-162020-12-160001109357exc:Maryland2020ElectricDistributionBaseRateCaseMemberexc:PotomacElectricPowerCompanyMember2021-03-312021-03-310001109357exc:Maryland2020ElectricDistributionBaseRateCaseMemberexc:PotomacElectricPowerCompanyMember2021-06-282021-06-280001109357exc:Maryland2022ElectricDistributionBaseRateCaseMemberexc:DelmarvaPowerandLightCompanyMember2022-05-192022-05-190001109357exc:Maryland2022ElectricDistributionBaseRateCaseMemberexc:DelmarvaPowerandLightCompanyMember2022-12-142022-12-140001109357exc:Illinois2022ElectricDistributionBaseRateCaseMemberexc:CommonwealthEdisonCoMemberexc:A2023Member2022-11-172022-11-170001109357exc:Illinois2022ElectricDistributionBaseRateCaseMemberexc:CommonwealthEdisonCoMemberexc:A2021Member2022-11-172022-11-170001109357exc:Illinois2022ElectricDistributionBaseRateCaseMemberexc:CommonwealthEdisonCoMemberexc:A2021Memberexc:PerformanceMetricsPenaltyMember2022-11-172022-11-170001109357exc:A2021Memberexc:BaltimoreGasAndElectricCompanyMemberexc:Maryland2020ElectricDistributionBaseRateCaseMember2020-12-162020-12-160001109357exc:A2022Memberexc:BaltimoreGasAndElectricCompanyMemberexc:Maryland2020ElectricDistributionBaseRateCaseMember2020-12-162020-12-160001109357exc:BaltimoreGasAndElectricCompanyMemberexc:A2023Memberexc:Maryland2020ElectricDistributionBaseRateCaseMember2020-12-162020-12-160001109357exc:A2021Memberexc:BaltimoreGasAndElectricCompanyMemberexc:Maryland2020GasDistributionBaseRateCaseMember2020-12-162020-12-160001109357exc:A2022Memberexc:BaltimoreGasAndElectricCompanyMemberexc:Maryland2020GasDistributionBaseRateCaseMember2020-12-162020-12-160001109357exc:BaltimoreGasAndElectricCompanyMemberexc:A2023Memberexc:Maryland2020GasDistributionBaseRateCaseMember2020-12-162020-12-160001109357exc:A2022Memberexc:OffsetsMemberexc:BaltimoreGasAndElectricCompanyMemberexc:Maryland2020ElectricDistributionBaseRateCaseMember2021-12-222021-12-220001109357exc:A2022Memberexc:OffsetsMemberexc:BaltimoreGasAndElectricCompanyMemberexc:Maryland2020GasDistributionBaseRateCaseMember2021-12-222021-12-220001109357exc:A2022Memberexc:Maryland2020ElectricDistributionBaseRateCaseMemberexc:PotomacElectricPowerCompanyMember2021-06-282021-06-280001109357exc:A2023Memberexc:Maryland2020ElectricDistributionBaseRateCaseMemberexc:PotomacElectricPowerCompanyMember2021-06-282021-06-280001109357exc:A2024Memberexc:Maryland2020ElectricDistributionBaseRateCaseMemberexc:PotomacElectricPowerCompanyMember2021-06-282021-06-280001109357exc:A2022Memberexc:OffsetsMemberexc:Maryland2020ElectricDistributionBaseRateCaseMemberexc:PotomacElectricPowerCompanyMember2022-02-232022-02-230001109357exc:Maryland2022ElectricDistributionBaseRateCaseMemberexc:DelmarvaPowerandLightCompanyMemberexc:A2023Member2022-12-142022-12-140001109357exc:Maryland2022ElectricDistributionBaseRateCaseMemberexc:A2024Memberexc:DelmarvaPowerandLightCompanyMember2022-12-142022-12-140001109357exc:Maryland2022ElectricDistributionBaseRateCaseMemberexc:DelmarvaPowerandLightCompanyMemberexc:A2025Member2022-12-142022-12-140001109357exc:CommonwealthEdisonCoMemberexc:Illinois2023ElectricDistributionBaseRateCaseMember2023-01-172023-01-170001109357exc:CommonwealthEdisonCoMemberexc:A2024Memberexc:Illinois2023ElectricDistributionBaseRateCaseMember2023-01-172023-01-170001109357exc:CommonwealthEdisonCoMemberexc:Illinois2023ElectricDistributionBaseRateCaseMemberexc:A2027Member2023-01-172023-01-170001109357exc:CommonwealthEdisonCoMemberexc:Illinois2023ElectricDistributionReconciliationRateCaseMember2023-04-212023-04-210001109357exc:BaltimoreGasAndElectricCompanyMemberexc:Maryland2023ElectricDistributionBaseRateCaseMember2023-02-172023-02-170001109357exc:BaltimoreGasAndElectricCompanyMemberexc:Maryland2023GasDistributionBaseRateCaseMember2023-02-172023-02-170001109357exc:DistrictOfColumbia2023ElectricDistributionBaseRateCaseMemberexc:PotomacElectricPowerCompanyMember2023-04-132023-04-130001109357exc:PotomacElectricPowerCompanyMemberexc:PepcoMaryland2023ElectricDistributionBaseRateCaseMember2023-05-162023-05-160001109357exc:DelmarvaPowerandLightCompanyMemberexc:DelawareDE2022ElectricDistributionBaseRateCaseMember2023-09-292023-09-290001109357exc:NewJersey2023ElectricDistributionBaseRateCaseMemberexc:AtlanticCityElectricCompanyMember2023-08-212023-08-210001109357exc:CommonwealthEdisonCoMemberexc:A2025Memberexc:Illinois2023ElectricDistributionBaseRateCaseMember2023-01-172023-01-170001109357exc:CommonwealthEdisonCoMemberexc:A2026Memberexc:Illinois2023ElectricDistributionBaseRateCaseMember2023-01-172023-01-170001109357exc:CommonwealthEdisonCoMemberexc:Illinois2023ElectricDistributionBaseRateCaseMembersrt:MinimumMember2023-01-172023-01-170001109357exc:CommonwealthEdisonCoMembersrt:MaximumMemberexc:Illinois2023ElectricDistributionBaseRateCaseMember2023-01-172023-01-170001109357exc:CommonwealthEdisonCoMemberexc:A2028Memberexc:Illinois2023ElectricDistributionBaseRateCaseMember2023-01-172023-01-170001109357exc:A2024Memberexc:BaltimoreGasAndElectricCompanyMemberexc:Maryland2023ElectricDistributionBaseRateCaseMember2023-02-172023-02-170001109357exc:BaltimoreGasAndElectricCompanyMemberexc:Maryland2023ElectricDistributionBaseRateCaseMemberexc:A2025Member2023-02-172023-02-170001109357exc:BaltimoreGasAndElectricCompanyMemberexc:Maryland2023ElectricDistributionBaseRateCaseMemberexc:A2026Member2023-02-172023-02-170001109357exc:A2024Memberexc:BaltimoreGasAndElectricCompanyMemberexc:Maryland2023GasDistributionBaseRateCaseMember2023-02-172023-02-170001109357exc:BaltimoreGasAndElectricCompanyMemberexc:Maryland2023GasDistributionBaseRateCaseMemberexc:A2025Member2023-02-172023-02-170001109357exc:BaltimoreGasAndElectricCompanyMemberexc:A2026Memberexc:Maryland2023GasDistributionBaseRateCaseMember2023-02-172023-02-170001109357exc:Maryland2023ElectricDistributionReconciliationRateCaseMemberexc:A2021Memberexc:BaltimoreGasAndElectricCompanyMember2022-07-012022-09-300001109357exc:A2021Memberexc:BaltimoreGasAndElectricCompanyMemberexc:Maryland2023GasDistributionReconciliationRateCaseMember2022-07-012022-09-300001109357exc:A2022Memberexc:Maryland2023ElectricDistributionReconciliationRateCaseMemberexc:BaltimoreGasAndElectricCompanyMember2023-07-012023-09-300001109357exc:A2022Memberexc:BaltimoreGasAndElectricCompanyMemberexc:Maryland2023GasDistributionReconciliationRateCaseMember2023-07-012023-09-300001109357exc:A2022Memberexc:BaltimoreGasAndElectricCompanyMemberexc:Maryland2023GasDistributionReconciliationRateCaseMember2023-01-012023-09-300001109357exc:A2024Memberexc:DistrictOfColumbia2023ElectricDistributionBaseRateCaseMemberexc:PotomacElectricPowerCompanyMember2023-04-132023-04-130001109357exc:DistrictOfColumbia2023ElectricDistributionBaseRateCaseMemberexc:A2025Memberexc:PotomacElectricPowerCompanyMember2023-04-132023-04-130001109357exc:DistrictOfColumbia2023ElectricDistributionBaseRateCaseMemberexc:A2026Memberexc:PotomacElectricPowerCompanyMember2023-04-132023-04-130001109357exc:A2024Memberexc:PotomacElectricPowerCompanyMemberexc:PepcoMaryland2023ElectricDistributionBaseRateCaseMember2023-05-162023-05-160001109357exc:A2025Memberexc:PotomacElectricPowerCompanyMemberexc:PepcoMaryland2023ElectricDistributionBaseRateCaseMember2023-05-162023-05-160001109357exc:A2026Memberexc:PotomacElectricPowerCompanyMemberexc:PepcoMaryland2023ElectricDistributionBaseRateCaseMember2023-05-162023-05-160001109357exc:PotomacElectricPowerCompanyMemberexc:PepcoMaryland2023ElectricDistributionBaseRateCaseMemberexc:A2027Member2023-05-162023-05-160001109357exc:CommonwealthEdisonCoMemberexc:A2023TransmissionFormulaRateAnnualUpdateMember2023-05-122023-05-120001109357exc:A2023TransmissionFormulaRateAnnualUpdateMemberexc:PecoEnergyCoMember2023-04-252023-04-250001109357exc:BaltimoreGasAndElectricCompanyMemberexc:A2023TransmissionFormulaRateAnnualUpdateMember2023-04-252023-04-250001109357exc:A2023TransmissionFormulaRateAnnualUpdateMemberexc:PotomacElectricPowerCompanyMember2023-05-122023-05-120001109357exc:DelmarvaPowerandLightCompanyMemberexc:A2023TransmissionFormulaRateAnnualUpdateMember2023-05-122023-05-120001109357exc:A2023TransmissionFormulaRateAnnualUpdateMemberexc:AtlanticCityElectricCompanyMember2023-05-122023-05-120001109357exc:A2023TransmissionFormulaRateAnnualUpdateMemberexc:PecoEnergyCoMember2023-05-302023-05-300001109357exc:BaltimoreGasAndElectricCompanyMemberexc:A2023TransmissionFormulaRateRevenueReductionMember2023-04-252023-04-250001109357exc:CommonwealthEdisonCoMember2022-02-032022-02-030001109357exc:CommonwealthEdisonCoMembersrt:ScenarioForecastMember2024-01-012027-12-310001109357exc:CommonwealthEdisonCoMemberus-gaap:SubsequentEventMemberexc:A2023Memberexc:Illinois2023ElectricDistributionBaseRateCaseMember2024-01-012027-12-310001109357exc:CommonwealthEdisonCoMember2022-09-272022-09-270001109357exc:CommonwealthEdisonCoMemberexc:CarbonMitigationCreditRiderMember2023-09-300001109357exc:CommonwealthEdisonCoMembersrt:ScenarioForecastMember2023-01-012025-12-310001109357exc:CommonwealthEdisonCoMemberexc:ComEd2023EnergyEfficiencyFormulaRateDomain2023-05-262023-05-260001109357exc:CommonwealthEdisonCoMemberexc:ComEd2022EnergyEfficiencyFormulaRateDomain2022-01-012022-12-310001109357us-gaap:OtherCurrentLiabilitiesMemberexc:AtlanticCityElectricCompanyMember2023-09-300001109357us-gaap:OtherNoncurrentLiabilitiesMemberexc:AtlanticCityElectricCompanyMember2023-09-300001109357srt:ScenarioForecastMemberexc:AtlanticCityElectricCompanyMember2023-07-012027-06-300001109357exc:CommonwealthEdisonCoMemberexc:ElectricDistributionFormulaRateAnnualReconciliationsMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberexc:CarbonMitigationCreditRiderMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberexc:ZECRegulatoryAssetMember2023-01-012023-09-300001109357us-gaap:DeferredIncomeTaxChargesMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357exc:ElectricEnergyAndNaturalGasCostsMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357exc:PecoEnergyCoMemberexc:NuclearDecommissioningMember2023-01-012023-09-300001109357us-gaap:RemovalCostsMemberexc:BaltimoreGasAndElectricCompanyMember2023-01-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberexc:UnderRecoveredRevenueDecouplingMember2023-01-012023-09-300001109357exc:ElectricEnergyCostsMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357us-gaap:DeferredIncomeTaxChargesMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357exc:ElectricEnergyAndNaturalGasCostsMemberexc:DelmarvaPowerandLightCompanyMember2023-01-012023-09-300001109357us-gaap:DeferredIncomeTaxChargesMemberexc:DelmarvaPowerandLightCompanyMember2023-01-012023-09-300001109357exc:ElectricEnergyAndNaturalGasCostsMemberexc:DelmarvaPowerandLightCompanyMember2023-01-012023-09-300001109357exc:AtlanticCityElectricCompanyMemberexc:ElectricEnergyCostsMember2023-01-012023-09-300001109357exc:OverRecoveredRevenueDecouplingMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357us-gaap:StrandedCostsMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-3000011093572023-10-012023-09-300001109357exc:PepcoHoldingsLLCMember2023-10-012023-09-300001109357exc:PotomacElectricPowerCompanyMember2023-10-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMember2023-10-012023-09-300001109357exc:AtlanticCityElectricCompanyMember2023-10-012023-09-3000011093572024-01-012023-09-3000011093572024-01-01exc:PepcoHoldingsLLCMember2023-09-3000011093572024-01-01exc:PotomacElectricPowerCompanyMember2023-09-3000011093572024-01-01exc:DelmarvaPowerandLightCompanyMember2023-09-3000011093572024-01-01exc:AtlanticCityElectricCompanyMember2023-09-3000011093572025-01-012023-09-300001109357exc:PepcoHoldingsLLCMember2025-01-012023-09-300001109357exc:PotomacElectricPowerCompanyMember2025-01-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMember2025-01-012023-09-3000011093572025-01-01exc:AtlanticCityElectricCompanyMember2023-09-3000011093572026-01-012023-09-300001109357exc:PepcoHoldingsLLCMember2026-01-012023-09-3000011093572026-01-01exc:PotomacElectricPowerCompanyMember2023-09-300001109357exc:DelmarvaPowerandLightCompanyMember2026-01-012023-09-3000011093572026-01-01exc:AtlanticCityElectricCompanyMember2023-09-3000011093572027-01-012023-09-300001109357exc:PepcoHoldingsLLCMember2027-01-012023-09-3000011093572027-01-01exc:PotomacElectricPowerCompanyMember2023-09-3000011093572027-01-01exc:DelmarvaPowerandLightCompanyMember2023-09-3000011093572027-01-01exc:AtlanticCityElectricCompanyMember2023-09-30exc:Reportable_segment0001109357us-gaap:OperatingSegmentsMemberexc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMember2023-07-012023-09-300001109357exc:PecoEnergyCoMemberus-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMember2023-07-012023-09-300001109357us-gaap:CorporateAndOtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:CorporateNonSegmentMember2023-07-012023-09-300001109357us-gaap:IntersegmentEliminationMemberus-gaap:ElectricityUsRegulatedMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:CommonwealthEdisonCoMember2023-07-012023-09-300001109357exc:PecoEnergyCoMemberus-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:PepcoHoldingsLLCMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:IntersegmentEliminationMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:CommonwealthEdisonCoMember2023-07-012023-09-300001109357exc:PecoEnergyCoMemberus-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:BaltimoreGasAndElectricCompanyMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:PepcoHoldingsLLCMember2023-07-012023-09-300001109357us-gaap:ServiceOtherMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2023-07-012023-09-300001109357us-gaap:ServiceOtherMemberus-gaap:IntersegmentEliminationMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:CommonwealthEdisonCoMember2023-07-012023-09-300001109357exc:PecoEnergyCoMemberus-gaap:OperatingSegmentsMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:BaltimoreGasAndElectricCompanyMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:PepcoHoldingsLLCMember2023-07-012023-09-300001109357us-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2023-07-012023-09-300001109357us-gaap:IntersegmentEliminationMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMember2022-07-012022-09-300001109357exc:PecoEnergyCoMemberus-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMember2022-07-012022-09-300001109357us-gaap:CorporateAndOtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:CorporateNonSegmentMember2022-07-012022-09-300001109357us-gaap:IntersegmentEliminationMemberus-gaap:ElectricityUsRegulatedMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:CommonwealthEdisonCoMember2022-07-012022-09-300001109357exc:PecoEnergyCoMemberus-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:PepcoHoldingsLLCMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:IntersegmentEliminationMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:CommonwealthEdisonCoMember2022-07-012022-09-300001109357exc:PecoEnergyCoMemberus-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:BaltimoreGasAndElectricCompanyMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:PepcoHoldingsLLCMember2022-07-012022-09-300001109357us-gaap:ServiceOtherMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2022-07-012022-09-300001109357us-gaap:ServiceOtherMemberus-gaap:IntersegmentEliminationMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:CommonwealthEdisonCoMember2022-07-012022-09-300001109357exc:PecoEnergyCoMemberus-gaap:OperatingSegmentsMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:BaltimoreGasAndElectricCompanyMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:PepcoHoldingsLLCMember2022-07-012022-09-300001109357us-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2022-07-012022-09-300001109357us-gaap:IntersegmentEliminationMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357exc:PecoEnergyCoMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357us-gaap:IntersegmentEliminationMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357us-gaap:IntersegmentEliminationMemberexc:PepcoHoldingsLLCMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357us-gaap:CorporateAndOtherMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357us-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357exc:PecoEnergyCoMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357us-gaap:IntersegmentEliminationMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357us-gaap:IntersegmentEliminationMemberexc:PepcoHoldingsLLCMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357us-gaap:CorporateAndOtherMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357us-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:PotomacElectricPowerCompanyMemberus-gaap:ElectricityUsRegulatedMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:CorporateAndOtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:CorporateNonSegmentMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:IntersegmentEliminationMemberus-gaap:ElectricityUsRegulatedMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:IntersegmentEliminationMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:DelmarvaPowerandLightCompanyMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ServiceOtherMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ServiceOtherMemberus-gaap:IntersegmentEliminationMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:DelmarvaPowerandLightCompanyMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:IntersegmentEliminationMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:PotomacElectricPowerCompanyMemberus-gaap:ElectricityUsRegulatedMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:CorporateAndOtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:CorporateNonSegmentMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:IntersegmentEliminationMemberus-gaap:ElectricityUsRegulatedMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:IntersegmentEliminationMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:DelmarvaPowerandLightCompanyMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ServiceOtherMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ServiceOtherMemberus-gaap:IntersegmentEliminationMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:DelmarvaPowerandLightCompanyMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:IntersegmentEliminationMember2022-07-012022-09-300001109357exc:PotomacElectricPowerCompanyMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357us-gaap:IntersegmentEliminationMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357us-gaap:IntersegmentEliminationMemberexc:AtlanticCityElectricCompanyMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:CorporateAndOtherMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357exc:PotomacElectricPowerCompanyMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357us-gaap:IntersegmentEliminationMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357us-gaap:IntersegmentEliminationMemberexc:AtlanticCityElectricCompanyMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:CorporateAndOtherMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberexc:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357exc:ResidentialMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:ResidentialMemberexc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357exc:ResidentialMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2023-07-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2023-07-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2023-07-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberexc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357exc:PublicAuthoritiesElectricRailroadsMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberexc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberexc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberexc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberexc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberexc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberexc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberexc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357exc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:ResidentialMemberexc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357exc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NaturalGasUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:TransportationMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMemberexc:TransportationMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMemberexc:TransportationMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:TransportationMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMemberexc:TransportationMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMemberexc:TransportationMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:TransportationMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NaturalGasUsRegulatedMemberexc:OtherMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:OtherMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberexc:OtherMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberexc:OtherMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:OtherMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberexc:OtherMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:OtherMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberexc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357exc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberexc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357exc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMember2023-07-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberexc:OtherRegulatedRevenueMember2023-07-012023-09-300001109357exc:OtherRegulatedRevenueMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357exc:OtherRegulatedRevenueMemberexc:BaltimoreGasAndElectricCompanyMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberexc:OtherRegulatedRevenueMember2023-07-012023-09-300001109357exc:OtherRegulatedRevenueMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357exc:OtherRegulatedRevenueMemberexc:DelmarvaPowerandLightCompanyMember2023-07-012023-09-300001109357exc:OtherRegulatedRevenueMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberexc:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357exc:ResidentialMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:ResidentialMemberexc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357exc:ResidentialMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2022-07-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2022-07-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2022-07-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberexc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357exc:PublicAuthoritiesElectricRailroadsMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberexc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberexc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberexc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberexc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberexc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberexc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberexc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357exc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:ResidentialMemberexc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357exc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NaturalGasUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:TransportationMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMemberexc:TransportationMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMemberexc:TransportationMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:TransportationMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMemberexc:TransportationMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMemberexc:TransportationMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:TransportationMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NaturalGasUsRegulatedMemberexc:OtherMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:OtherMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberexc:OtherMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberexc:OtherMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:OtherMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberexc:OtherMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:OtherMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberexc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357exc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberexc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357exc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberexc:OtherRegulatedRevenueMember2022-07-012022-09-300001109357exc:OtherRegulatedRevenueMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357exc:OtherRegulatedRevenueMemberexc:BaltimoreGasAndElectricCompanyMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberexc:OtherRegulatedRevenueMember2022-07-012022-09-300001109357exc:OtherRegulatedRevenueMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357exc:OtherRegulatedRevenueMemberexc:DelmarvaPowerandLightCompanyMember2022-07-012022-09-300001109357exc:OtherRegulatedRevenueMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMember2023-01-012023-09-300001109357exc:PecoEnergyCoMemberus-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMember2023-01-012023-09-300001109357us-gaap:CorporateAndOtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:CorporateNonSegmentMember2023-01-012023-09-300001109357us-gaap:IntersegmentEliminationMemberus-gaap:ElectricityUsRegulatedMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:CommonwealthEdisonCoMember2023-01-012023-09-300001109357exc:PecoEnergyCoMemberus-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:PepcoHoldingsLLCMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:IntersegmentEliminationMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:CommonwealthEdisonCoMember2023-01-012023-09-300001109357exc:PecoEnergyCoMemberus-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:BaltimoreGasAndElectricCompanyMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:PepcoHoldingsLLCMember2023-01-012023-09-300001109357us-gaap:ServiceOtherMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2023-01-012023-09-300001109357us-gaap:ServiceOtherMemberus-gaap:IntersegmentEliminationMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:CommonwealthEdisonCoMember2023-01-012023-09-300001109357exc:PecoEnergyCoMemberus-gaap:OperatingSegmentsMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:BaltimoreGasAndElectricCompanyMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:PepcoHoldingsLLCMember2023-01-012023-09-300001109357us-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2023-01-012023-09-300001109357us-gaap:IntersegmentEliminationMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMember2022-01-012022-09-300001109357exc:PecoEnergyCoMemberus-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMember2022-01-012022-09-300001109357us-gaap:CorporateAndOtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:CorporateNonSegmentMember2022-01-012022-09-300001109357us-gaap:IntersegmentEliminationMemberus-gaap:ElectricityUsRegulatedMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:CommonwealthEdisonCoMember2022-01-012022-09-300001109357exc:PecoEnergyCoMemberus-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:PepcoHoldingsLLCMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:IntersegmentEliminationMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:CommonwealthEdisonCoMember2022-01-012022-09-300001109357exc:PecoEnergyCoMemberus-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:BaltimoreGasAndElectricCompanyMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:PepcoHoldingsLLCMember2022-01-012022-09-300001109357us-gaap:ServiceOtherMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2022-01-012022-09-300001109357us-gaap:ServiceOtherMemberus-gaap:IntersegmentEliminationMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:CommonwealthEdisonCoMember2022-01-012022-09-300001109357exc:PecoEnergyCoMemberus-gaap:OperatingSegmentsMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:BaltimoreGasAndElectricCompanyMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:PepcoHoldingsLLCMember2022-01-012022-09-300001109357us-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2022-01-012022-09-300001109357us-gaap:IntersegmentEliminationMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357exc:PecoEnergyCoMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357us-gaap:IntersegmentEliminationMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357us-gaap:IntersegmentEliminationMemberexc:PepcoHoldingsLLCMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357us-gaap:CorporateAndOtherMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357us-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357exc:PecoEnergyCoMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357us-gaap:IntersegmentEliminationMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357us-gaap:IntersegmentEliminationMemberexc:PepcoHoldingsLLCMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357us-gaap:CorporateAndOtherMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357us-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:CommonwealthEdisonCoMember2023-09-300001109357exc:PecoEnergyCoMemberus-gaap:OperatingSegmentsMember2023-09-300001109357us-gaap:OperatingSegmentsMemberexc:BaltimoreGasAndElectricCompanyMember2023-09-300001109357us-gaap:OperatingSegmentsMemberexc:PepcoHoldingsLLCMember2023-09-300001109357us-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2023-09-300001109357us-gaap:IntersegmentEliminationMember2023-09-300001109357us-gaap:OperatingSegmentsMember2023-09-300001109357us-gaap:OperatingSegmentsMemberexc:CommonwealthEdisonCoMember2022-12-310001109357exc:PecoEnergyCoMemberus-gaap:OperatingSegmentsMember2022-12-310001109357us-gaap:OperatingSegmentsMemberexc:BaltimoreGasAndElectricCompanyMember2022-12-310001109357us-gaap:OperatingSegmentsMemberexc:PepcoHoldingsLLCMember2022-12-310001109357us-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2022-12-310001109357us-gaap:IntersegmentEliminationMember2022-12-310001109357us-gaap:OperatingSegmentsMember2022-12-310001109357us-gaap:OperatingSegmentsMemberexc:PotomacElectricPowerCompanyMemberus-gaap:ElectricityUsRegulatedMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:CorporateAndOtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:CorporateNonSegmentMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:IntersegmentEliminationMemberus-gaap:ElectricityUsRegulatedMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:IntersegmentEliminationMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:DelmarvaPowerandLightCompanyMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ServiceOtherMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ServiceOtherMemberus-gaap:IntersegmentEliminationMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:DelmarvaPowerandLightCompanyMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:IntersegmentEliminationMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:PotomacElectricPowerCompanyMemberus-gaap:ElectricityUsRegulatedMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:CorporateAndOtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:CorporateNonSegmentMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:IntersegmentEliminationMemberus-gaap:ElectricityUsRegulatedMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:IntersegmentEliminationMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:DelmarvaPowerandLightCompanyMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ServiceOtherMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ServiceOtherMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ServiceOtherMemberus-gaap:IntersegmentEliminationMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:DelmarvaPowerandLightCompanyMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:IntersegmentEliminationMember2022-01-012022-09-300001109357exc:PotomacElectricPowerCompanyMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357us-gaap:IntersegmentEliminationMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357us-gaap:IntersegmentEliminationMemberexc:AtlanticCityElectricCompanyMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:CorporateAndOtherMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357exc:PotomacElectricPowerCompanyMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357us-gaap:IntersegmentEliminationMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357us-gaap:IntersegmentEliminationMemberexc:AtlanticCityElectricCompanyMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:CorporateAndOtherMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:IntersegmentEliminationMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:PotomacElectricPowerCompanyMember2023-09-300001109357us-gaap:OperatingSegmentsMemberexc:DelmarvaPowerandLightCompanyMember2023-09-300001109357us-gaap:OperatingSegmentsMemberexc:AtlanticCityElectricCompanyMember2023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:IntersegmentEliminationMember2023-09-300001109357us-gaap:OperatingSegmentsMemberexc:PotomacElectricPowerCompanyMember2022-12-310001109357us-gaap:OperatingSegmentsMemberexc:DelmarvaPowerandLightCompanyMember2022-12-310001109357us-gaap:OperatingSegmentsMemberexc:AtlanticCityElectricCompanyMember2022-12-310001109357exc:PepcoHoldingsLLCMemberus-gaap:CorporateAndOtherMemberus-gaap:CorporateNonSegmentMember2022-12-310001109357exc:PepcoHoldingsLLCMemberus-gaap:IntersegmentEliminationMember2022-12-310001109357exc:CommonwealthEdisonCoMemberexc:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357exc:ResidentialMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:ResidentialMemberexc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357exc:ResidentialMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2023-01-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2023-01-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2023-01-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberexc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357exc:PublicAuthoritiesElectricRailroadsMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberexc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberexc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberexc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberexc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberexc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberexc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberexc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357exc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:ResidentialMemberexc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357exc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NaturalGasUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:TransportationMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMemberexc:TransportationMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMemberexc:TransportationMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:TransportationMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMemberexc:TransportationMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMemberexc:TransportationMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:TransportationMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NaturalGasUsRegulatedMemberexc:OtherMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:OtherMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberexc:OtherMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberexc:OtherMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:OtherMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberexc:OtherMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:OtherMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberexc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357exc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberexc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357exc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMember2023-01-012023-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberexc:OtherRegulatedRevenueMember2023-01-012023-09-300001109357exc:OtherRegulatedRevenueMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357exc:OtherRegulatedRevenueMemberexc:BaltimoreGasAndElectricCompanyMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberexc:OtherRegulatedRevenueMember2023-01-012023-09-300001109357exc:OtherRegulatedRevenueMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357exc:OtherRegulatedRevenueMemberexc:DelmarvaPowerandLightCompanyMember2023-01-012023-09-300001109357exc:OtherRegulatedRevenueMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberexc:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357exc:ResidentialMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:ResidentialMemberexc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357exc:ResidentialMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:ResidentialMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2022-01-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2022-01-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2022-01-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberexc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357exc:PublicAuthoritiesElectricRailroadsMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberexc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberexc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:PublicAuthoritiesElectricRailroadsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberexc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberexc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberexc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberexc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:OtherMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberexc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357exc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:ResidentialMemberexc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357exc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:ResidentialMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NaturalGasUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:SmallCommercialIndustrialMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:LargeCommercialIndustrialMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:TransportationMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMemberexc:TransportationMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMemberexc:TransportationMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:TransportationMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMemberexc:TransportationMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMemberexc:TransportationMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:TransportationMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NaturalGasUsRegulatedMemberexc:OtherMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:OtherMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberexc:OtherMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberexc:OtherMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:OtherMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberexc:OtherMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:OtherMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberexc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357exc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberexc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357exc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:AlternativeRevenueProgramsMemberus-gaap:OperatingSegmentsMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberexc:DelmarvaPowerandLightCompanyMemberus-gaap:RegulatedOperationMember2022-01-012022-09-300001109357us-gaap:OperatingSegmentsMemberus-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberexc:OtherRegulatedRevenueMember2022-01-012022-09-300001109357exc:OtherRegulatedRevenueMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357exc:OtherRegulatedRevenueMemberexc:BaltimoreGasAndElectricCompanyMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberexc:OtherRegulatedRevenueMember2022-01-012022-09-300001109357exc:OtherRegulatedRevenueMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357exc:OtherRegulatedRevenueMemberexc:DelmarvaPowerandLightCompanyMember2022-01-012022-09-300001109357exc:OtherRegulatedRevenueMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PotomacElectricPowerCompanyMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMemberus-gaap:RelatedPartyMember2023-01-012023-09-300001109357us-gaap:NaturalGasUsRegulatedMemberexc:BaltimoreGasAndElectricCompanyMemberus-gaap:RegulatedOperationMemberus-gaap:RelatedPartyMember2022-01-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357us-gaap:NaturalGasUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:PecoEnergyCoMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMemberus-gaap:RelatedPartyMember2023-07-012023-09-300001109357us-gaap:ElectricityUsRegulatedMemberus-gaap:RegulatedOperationMemberexc:AtlanticCityElectricCompanyMemberus-gaap:RelatedPartyMember2022-07-012022-09-300001109357us-gaap:TradeAccountsReceivableMember2023-06-300001109357exc:CommonwealthEdisonCoMemberus-gaap:TradeAccountsReceivableMember2023-06-300001109357us-gaap:TradeAccountsReceivableMemberexc:PecoEnergyCoMember2023-06-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:TradeAccountsReceivableMember2023-06-300001109357exc:PepcoHoldingsLLCMemberus-gaap:TradeAccountsReceivableMember2023-06-300001109357us-gaap:TradeAccountsReceivableMemberexc:PotomacElectricPowerCompanyMember2023-06-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:TradeAccountsReceivableMember2023-06-300001109357us-gaap:TradeAccountsReceivableMemberexc:AtlanticCityElectricCompanyMember2023-06-300001109357us-gaap:TradeAccountsReceivableMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:TradeAccountsReceivableMember2023-07-012023-09-300001109357us-gaap:TradeAccountsReceivableMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:TradeAccountsReceivableMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:TradeAccountsReceivableMember2023-07-012023-09-300001109357us-gaap:TradeAccountsReceivableMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:TradeAccountsReceivableMember2023-07-012023-09-300001109357us-gaap:TradeAccountsReceivableMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357us-gaap:TradeAccountsReceivableMember2023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:TradeAccountsReceivableMember2023-09-300001109357us-gaap:TradeAccountsReceivableMemberexc:PecoEnergyCoMember2023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:TradeAccountsReceivableMember2023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:TradeAccountsReceivableMember2023-09-300001109357us-gaap:TradeAccountsReceivableMemberexc:PotomacElectricPowerCompanyMember2023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:TradeAccountsReceivableMember2023-09-300001109357us-gaap:TradeAccountsReceivableMemberexc:AtlanticCityElectricCompanyMember2023-09-300001109357us-gaap:TradeAccountsReceivableMember2022-06-300001109357exc:CommonwealthEdisonCoMemberus-gaap:TradeAccountsReceivableMember2022-06-300001109357us-gaap:TradeAccountsReceivableMemberexc:PecoEnergyCoMember2022-06-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:TradeAccountsReceivableMember2022-06-300001109357exc:PepcoHoldingsLLCMemberus-gaap:TradeAccountsReceivableMember2022-06-300001109357us-gaap:TradeAccountsReceivableMemberexc:PotomacElectricPowerCompanyMember2022-06-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:TradeAccountsReceivableMember2022-06-300001109357us-gaap:TradeAccountsReceivableMemberexc:AtlanticCityElectricCompanyMember2022-06-300001109357us-gaap:TradeAccountsReceivableMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:TradeAccountsReceivableMember2022-07-012022-09-300001109357us-gaap:TradeAccountsReceivableMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:TradeAccountsReceivableMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:TradeAccountsReceivableMember2022-07-012022-09-300001109357us-gaap:TradeAccountsReceivableMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:TradeAccountsReceivableMember2022-07-012022-09-300001109357us-gaap:TradeAccountsReceivableMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357us-gaap:TradeAccountsReceivableMember2022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:TradeAccountsReceivableMember2022-09-300001109357us-gaap:TradeAccountsReceivableMemberexc:PecoEnergyCoMember2022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:TradeAccountsReceivableMember2022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:TradeAccountsReceivableMember2022-09-300001109357us-gaap:TradeAccountsReceivableMemberexc:PotomacElectricPowerCompanyMember2022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:TradeAccountsReceivableMember2022-09-300001109357us-gaap:TradeAccountsReceivableMemberexc:AtlanticCityElectricCompanyMember2022-09-300001109357us-gaap:TradeAccountsReceivableMember2022-12-310001109357exc:CommonwealthEdisonCoMemberus-gaap:TradeAccountsReceivableMember2022-12-310001109357us-gaap:TradeAccountsReceivableMemberexc:PecoEnergyCoMember2022-12-310001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:TradeAccountsReceivableMember2022-12-310001109357exc:PepcoHoldingsLLCMemberus-gaap:TradeAccountsReceivableMember2022-12-310001109357us-gaap:TradeAccountsReceivableMemberexc:PotomacElectricPowerCompanyMember2022-12-310001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:TradeAccountsReceivableMember2022-12-310001109357us-gaap:TradeAccountsReceivableMemberexc:AtlanticCityElectricCompanyMember2022-12-310001109357us-gaap:TradeAccountsReceivableMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:TradeAccountsReceivableMember2023-01-012023-09-300001109357us-gaap:TradeAccountsReceivableMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:TradeAccountsReceivableMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:TradeAccountsReceivableMember2023-01-012023-09-300001109357us-gaap:TradeAccountsReceivableMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:TradeAccountsReceivableMember2023-01-012023-09-300001109357us-gaap:TradeAccountsReceivableMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357us-gaap:TradeAccountsReceivableMember2021-12-310001109357exc:CommonwealthEdisonCoMemberus-gaap:TradeAccountsReceivableMember2021-12-310001109357us-gaap:TradeAccountsReceivableMemberexc:PecoEnergyCoMember2021-12-310001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:TradeAccountsReceivableMember2021-12-310001109357exc:PepcoHoldingsLLCMemberus-gaap:TradeAccountsReceivableMember2021-12-310001109357us-gaap:TradeAccountsReceivableMemberexc:PotomacElectricPowerCompanyMember2021-12-310001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:TradeAccountsReceivableMember2021-12-310001109357us-gaap:TradeAccountsReceivableMemberexc:AtlanticCityElectricCompanyMember2021-12-310001109357us-gaap:TradeAccountsReceivableMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:TradeAccountsReceivableMember2022-01-012022-09-300001109357us-gaap:TradeAccountsReceivableMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:TradeAccountsReceivableMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:TradeAccountsReceivableMember2022-01-012022-09-300001109357us-gaap:TradeAccountsReceivableMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:TradeAccountsReceivableMember2022-01-012022-09-300001109357us-gaap:TradeAccountsReceivableMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:OtherReceivablesMember2023-06-300001109357exc:CommonwealthEdisonCoMemberexc:OtherReceivablesMember2023-06-300001109357exc:OtherReceivablesMemberexc:PecoEnergyCoMember2023-06-300001109357exc:BaltimoreGasAndElectricCompanyMemberexc:OtherReceivablesMember2023-06-300001109357exc:PepcoHoldingsLLCMemberexc:OtherReceivablesMember2023-06-300001109357exc:OtherReceivablesMemberexc:PotomacElectricPowerCompanyMember2023-06-300001109357exc:DelmarvaPowerandLightCompanyMemberexc:OtherReceivablesMember2023-06-300001109357exc:OtherReceivablesMemberexc:AtlanticCityElectricCompanyMember2023-06-300001109357exc:OtherReceivablesMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberexc:OtherReceivablesMember2023-07-012023-09-300001109357exc:OtherReceivablesMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberexc:OtherReceivablesMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberexc:OtherReceivablesMember2023-07-012023-09-300001109357exc:OtherReceivablesMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberexc:OtherReceivablesMember2023-07-012023-09-300001109357exc:OtherReceivablesMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:OtherReceivablesMember2023-09-300001109357exc:CommonwealthEdisonCoMemberexc:OtherReceivablesMember2023-09-300001109357exc:OtherReceivablesMemberexc:PecoEnergyCoMember2023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberexc:OtherReceivablesMember2023-09-300001109357exc:PepcoHoldingsLLCMemberexc:OtherReceivablesMember2023-09-300001109357exc:OtherReceivablesMemberexc:PotomacElectricPowerCompanyMember2023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberexc:OtherReceivablesMember2023-09-300001109357exc:OtherReceivablesMemberexc:AtlanticCityElectricCompanyMember2023-09-300001109357exc:OtherReceivablesMember2022-06-300001109357exc:CommonwealthEdisonCoMemberexc:OtherReceivablesMember2022-06-300001109357exc:OtherReceivablesMemberexc:PecoEnergyCoMember2022-06-300001109357exc:BaltimoreGasAndElectricCompanyMemberexc:OtherReceivablesMember2022-06-300001109357exc:PepcoHoldingsLLCMemberexc:OtherReceivablesMember2022-06-300001109357exc:OtherReceivablesMemberexc:PotomacElectricPowerCompanyMember2022-06-300001109357exc:DelmarvaPowerandLightCompanyMemberexc:OtherReceivablesMember2022-06-300001109357exc:OtherReceivablesMemberexc:AtlanticCityElectricCompanyMember2022-06-300001109357exc:OtherReceivablesMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberexc:OtherReceivablesMember2022-07-012022-09-300001109357exc:OtherReceivablesMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberexc:OtherReceivablesMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberexc:OtherReceivablesMember2022-07-012022-09-300001109357exc:OtherReceivablesMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberexc:OtherReceivablesMember2022-07-012022-09-300001109357exc:OtherReceivablesMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:OtherReceivablesMember2022-09-300001109357exc:CommonwealthEdisonCoMemberexc:OtherReceivablesMember2022-09-300001109357exc:OtherReceivablesMemberexc:PecoEnergyCoMember2022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberexc:OtherReceivablesMember2022-09-300001109357exc:PepcoHoldingsLLCMemberexc:OtherReceivablesMember2022-09-300001109357exc:OtherReceivablesMemberexc:PotomacElectricPowerCompanyMember2022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberexc:OtherReceivablesMember2022-09-300001109357exc:OtherReceivablesMemberexc:AtlanticCityElectricCompanyMember2022-09-300001109357exc:OtherReceivablesMember2022-12-310001109357exc:CommonwealthEdisonCoMemberexc:OtherReceivablesMember2022-12-310001109357exc:OtherReceivablesMemberexc:PecoEnergyCoMember2022-12-310001109357exc:BaltimoreGasAndElectricCompanyMemberexc:OtherReceivablesMember2022-12-310001109357exc:PepcoHoldingsLLCMemberexc:OtherReceivablesMember2022-12-310001109357exc:OtherReceivablesMemberexc:PotomacElectricPowerCompanyMember2022-12-310001109357exc:DelmarvaPowerandLightCompanyMemberexc:OtherReceivablesMember2022-12-310001109357exc:OtherReceivablesMemberexc:AtlanticCityElectricCompanyMember2022-12-310001109357exc:OtherReceivablesMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberexc:OtherReceivablesMember2023-01-012023-09-300001109357exc:OtherReceivablesMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberexc:OtherReceivablesMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberexc:OtherReceivablesMember2023-01-012023-09-300001109357exc:OtherReceivablesMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberexc:OtherReceivablesMember2023-01-012023-09-300001109357exc:OtherReceivablesMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:OtherReceivablesMember2021-12-310001109357exc:CommonwealthEdisonCoMemberexc:OtherReceivablesMember2021-12-310001109357exc:OtherReceivablesMemberexc:PecoEnergyCoMember2021-12-310001109357exc:BaltimoreGasAndElectricCompanyMemberexc:OtherReceivablesMember2021-12-310001109357exc:PepcoHoldingsLLCMemberexc:OtherReceivablesMember2021-12-310001109357exc:OtherReceivablesMemberexc:PotomacElectricPowerCompanyMember2021-12-310001109357exc:DelmarvaPowerandLightCompanyMemberexc:OtherReceivablesMember2021-12-310001109357exc:OtherReceivablesMemberexc:AtlanticCityElectricCompanyMember2021-12-310001109357exc:OtherReceivablesMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberexc:OtherReceivablesMember2022-01-012022-09-300001109357exc:OtherReceivablesMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberexc:OtherReceivablesMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberexc:OtherReceivablesMember2022-01-012022-09-300001109357exc:OtherReceivablesMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberexc:OtherReceivablesMember2022-01-012022-09-300001109357exc:OtherReceivablesMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:ExelonGenerationCoLlcAffiliateMemberexc:BaltimoreGasAndElectricCompanyMember2022-01-012022-09-300001109357exc:ExelonGenerationCoLlcAffiliateMember2022-01-012022-09-300001109357exc:FederalAndStateMember2023-07-012023-09-300001109357exc:FederalAndStateMember2023-01-012023-09-300001109357exc:FederalAndStateMember2022-01-012022-09-300001109357us-gaap:IndemnificationGuaranteeMember2022-01-012022-09-300001109357us-gaap:StateAndLocalJurisdictionMemberexc:AtlanticCityElectricCompanyMember2023-09-300001109357us-gaap:UsTreasuryUstInterestRateMember2022-08-162022-08-160001109357us-gaap:PensionPlansDefinedBenefitMember2023-01-012023-09-300001109357us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2023-01-012023-09-300001109357us-gaap:PensionPlansDefinedBenefitMember2023-07-012023-09-300001109357us-gaap:PensionPlansDefinedBenefitMember2022-07-012022-09-300001109357us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2023-07-012023-09-300001109357us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2022-07-012022-09-300001109357us-gaap:PensionPlansDefinedBenefitMember2022-01-012022-09-300001109357us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2022-01-012022-09-300001109357exc:PensionandotherpostretirementbenefitMember2023-07-012023-09-300001109357exc:PensionandotherpostretirementbenefitMember2022-07-012022-09-300001109357exc:PensionandotherpostretirementbenefitMember2023-01-012023-09-300001109357exc:PensionandotherpostretirementbenefitMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMemberexc:PensionandotherpostretirementbenefitMember2023-07-012023-09-300001109357exc:CommonwealthEdisonCoMemberexc:PensionandotherpostretirementbenefitMember2022-07-012022-09-300001109357exc:CommonwealthEdisonCoMemberexc:PensionandotherpostretirementbenefitMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberexc:PensionandotherpostretirementbenefitMember2022-01-012022-09-300001109357exc:PensionandotherpostretirementbenefitMemberexc:PecoEnergyCoMember2023-07-012023-09-300001109357exc:PensionandotherpostretirementbenefitMemberexc:PecoEnergyCoMember2022-07-012022-09-300001109357exc:PensionandotherpostretirementbenefitMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357exc:PensionandotherpostretirementbenefitMemberexc:PecoEnergyCoMember2022-01-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberexc:PensionandotherpostretirementbenefitMember2023-07-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberexc:PensionandotherpostretirementbenefitMember2022-07-012022-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberexc:PensionandotherpostretirementbenefitMember2023-01-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberexc:PensionandotherpostretirementbenefitMember2022-01-012022-09-300001109357exc:PepcoHoldingsLLCMemberexc:PensionandotherpostretirementbenefitMember2023-07-012023-09-300001109357exc:PepcoHoldingsLLCMemberexc:PensionandotherpostretirementbenefitMember2022-07-012022-09-300001109357exc:PepcoHoldingsLLCMemberexc:PensionandotherpostretirementbenefitMember2023-01-012023-09-300001109357exc:PepcoHoldingsLLCMemberexc:PensionandotherpostretirementbenefitMember2022-01-012022-09-300001109357exc:PensionandotherpostretirementbenefitMemberexc:PotomacElectricPowerCompanyMember2023-07-012023-09-300001109357exc:PensionandotherpostretirementbenefitMemberexc:PotomacElectricPowerCompanyMember2022-07-012022-09-300001109357exc:PensionandotherpostretirementbenefitMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357exc:PensionandotherpostretirementbenefitMemberexc:PotomacElectricPowerCompanyMember2022-01-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberexc:PensionandotherpostretirementbenefitMember2023-07-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberexc:PensionandotherpostretirementbenefitMember2022-07-012022-09-300001109357exc:DelmarvaPowerandLightCompanyMemberexc:PensionandotherpostretirementbenefitMember2023-01-012023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberexc:PensionandotherpostretirementbenefitMember2022-01-012022-09-300001109357exc:PensionandotherpostretirementbenefitMemberexc:AtlanticCityElectricCompanyMember2023-07-012023-09-300001109357exc:PensionandotherpostretirementbenefitMemberexc:AtlanticCityElectricCompanyMember2022-07-012022-09-300001109357exc:PensionandotherpostretirementbenefitMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357exc:PensionandotherpostretirementbenefitMemberexc:AtlanticCityElectricCompanyMember2022-01-012022-09-300001109357exc:CommonwealthEdisonCoMember2012-06-012012-06-30utr:MWh0001109357exc:BaltimoreGasAndElectricCompanyMembersrt:MinimumMember2023-07-012023-09-300001109357exc:BaltimoreGasAndElectricCompanyMembersrt:MaximumMember2023-07-012023-09-300001109357us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:InterestRateContractMember2023-09-300001109357us-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2023-09-300001109357us-gaap:InterestRateContractMember2023-09-300001109357us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:InterestRateContractMember2022-12-310001109357us-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2022-12-310001109357us-gaap:InterestRateContractMember2022-12-310001109357us-gaap:CashFlowHedgingMemberexc:InterestRateSwapNotional5YRMember2023-01-310001109357exc:InterestRateSwapNotional10YRMemberus-gaap:CashFlowHedgingMember2023-01-310001109357us-gaap:InterestRateSwapMemberus-gaap:CashFlowHedgingMember2023-01-310001109357exc:InterestRateSwapTerminatedMemberus-gaap:CashFlowHedgingMember2023-01-310001109357us-gaap:CorporateNonSegmentMemberus-gaap:NotesPayableToBanksMember2023-09-300001109357us-gaap:InterestRateSwapMemberus-gaap:CashFlowHedgingMember2023-07-012023-09-300001109357us-gaap:CashFlowHedgingMemberexc:InterestRateSwapNotional5YRMember2023-09-300001109357us-gaap:CashFlowHedgingMemberexc:InterestRateSwapNotional5YRMember2022-12-310001109357exc:InterestRateSwapNotional10YRMemberus-gaap:CashFlowHedgingMember2023-09-300001109357exc:InterestRateSwapNotional10YRMemberus-gaap:CashFlowHedgingMember2022-12-310001109357us-gaap:InterestRateSwapMemberus-gaap:CashFlowHedgingMember2023-09-300001109357us-gaap:InterestRateSwapMemberus-gaap:CashFlowHedgingMember2022-12-310001109357us-gaap:InterestRateSwapMemberus-gaap:CashFlowHedgingMember2023-01-012023-09-300001109357us-gaap:NotDesignatedAsHedgingInstrumentEconomicHedgeMemberexc:InterestRateCap18monthMember2022-12-310001109357us-gaap:NotDesignatedAsHedgingInstrumentEconomicHedgeMemberexc:InterestRateCapNotional6monthMember2022-12-310001109357us-gaap:InterestRateCapMemberus-gaap:NotDesignatedAsHedgingInstrumentEconomicHedgeMember2022-12-310001109357us-gaap:InterestRateCapMemberus-gaap:NotDesignatedAsHedgingInstrumentEconomicHedgeMember2023-09-300001109357us-gaap:NotDesignatedAsHedgingInstrumentEconomicHedgeMemberexc:ConstantMaturityTreasuryInterestRateSwapsMember2023-09-300001109357us-gaap:NotDesignatedAsHedgingInstrumentEconomicHedgeMemberexc:ConstantMaturityTreasuryInterestRateSwapsMember2022-12-310001109357us-gaap:NotDesignatedAsHedgingInstrumentEconomicHedgeMemberexc:EconomicHedgesMember2023-09-300001109357us-gaap:NotDesignatedAsHedgingInstrumentEconomicHedgeMemberexc:EconomicHedgesMember2022-12-310001109357us-gaap:InterestRateCapMemberus-gaap:NotDesignatedAsHedgingInstrumentEconomicHedgeMemberexc:ElectricOperatingRevenuesMember2023-07-012023-09-300001109357us-gaap:InterestRateCapMemberus-gaap:NotDesignatedAsHedgingInstrumentEconomicHedgeMemberexc:ElectricOperatingRevenuesMember2023-01-012023-09-300001109357us-gaap:InterestRateCapMemberus-gaap:InterestExpenseMemberus-gaap:NotDesignatedAsHedgingInstrumentEconomicHedgeMember2023-07-012023-09-300001109357us-gaap:InterestRateCapMemberus-gaap:InterestExpenseMemberus-gaap:NotDesignatedAsHedgingInstrumentEconomicHedgeMember2023-01-012023-09-300001109357us-gaap:InterestRateCapMemberus-gaap:NotDesignatedAsHedgingInstrumentEconomicHedgeMember2023-07-012023-09-300001109357us-gaap:InterestRateCapMemberus-gaap:NotDesignatedAsHedgingInstrumentEconomicHedgeMember2023-01-012023-09-300001109357us-gaap:CommodityContractMemberexc:CollateralMemberexc:ExternalCounterpartiesMember2023-09-300001109357us-gaap:CommodityContractMemberexc:CollateralMemberexc:ExternalCounterpartiesMember2022-12-310001109357exc:CommonwealthEdisonCoMemberus-gaap:CommodityContractMemberexc:CollateralMemberexc:ExternalCounterpartiesMember2023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:CommodityContractMemberexc:CollateralMemberexc:ExternalCounterpartiesMember2022-12-310001109357us-gaap:CommodityContractMemberexc:PecoEnergyCoMemberexc:CollateralMemberexc:ExternalCounterpartiesMember2023-09-300001109357us-gaap:CommodityContractMemberexc:PecoEnergyCoMemberexc:CollateralMemberexc:ExternalCounterpartiesMember2022-12-310001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:CommodityContractMemberexc:CollateralMemberexc:ExternalCounterpartiesMember2023-09-300001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:CommodityContractMemberexc:CollateralMemberexc:ExternalCounterpartiesMember2022-12-310001109357exc:PepcoHoldingsLLCMemberus-gaap:CommodityContractMemberexc:CollateralMemberexc:ExternalCounterpartiesMember2023-09-300001109357exc:PepcoHoldingsLLCMemberus-gaap:CommodityContractMemberexc:CollateralMemberexc:ExternalCounterpartiesMember2022-12-310001109357us-gaap:CommodityContractMemberexc:PotomacElectricPowerCompanyMemberexc:CollateralMemberexc:ExternalCounterpartiesMember2023-09-300001109357us-gaap:CommodityContractMemberexc:PotomacElectricPowerCompanyMemberexc:CollateralMemberexc:ExternalCounterpartiesMember2022-12-310001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:CommodityContractMemberexc:CollateralMemberexc:ExternalCounterpartiesMember2023-09-300001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:CommodityContractMemberexc:CollateralMemberexc:ExternalCounterpartiesMember2022-12-310001109357us-gaap:CommodityContractMemberexc:CollateralMemberexc:AtlanticCityElectricCompanyMemberexc:ExternalCounterpartiesMember2023-09-300001109357us-gaap:CommodityContractMemberexc:CollateralMemberexc:AtlanticCityElectricCompanyMemberexc:ExternalCounterpartiesMember2022-12-310001109357us-gaap:CommercialPaperMember2023-09-300001109357us-gaap:CommercialPaperMember2022-12-310001109357us-gaap:CommercialPaperMemberexc:CommonwealthEdisonCoMember2023-09-300001109357us-gaap:CommercialPaperMemberexc:CommonwealthEdisonCoMember2022-12-310001109357us-gaap:CommercialPaperMemberexc:PecoEnergyCoMember2023-09-300001109357us-gaap:CommercialPaperMemberexc:PecoEnergyCoMember2022-12-310001109357us-gaap:CommercialPaperMemberexc:BaltimoreGasAndElectricCompanyMember2023-09-300001109357us-gaap:CommercialPaperMemberexc:BaltimoreGasAndElectricCompanyMember2022-12-310001109357us-gaap:CommercialPaperMemberexc:PepcoHoldingsLLCMember2023-09-300001109357us-gaap:CommercialPaperMemberexc:PepcoHoldingsLLCMember2022-12-310001109357us-gaap:CommercialPaperMemberexc:PotomacElectricPowerCompanyMember2023-09-300001109357us-gaap:CommercialPaperMemberexc:PotomacElectricPowerCompanyMember2022-12-310001109357us-gaap:CommercialPaperMemberexc:DelmarvaPowerandLightCompanyMember2023-09-300001109357us-gaap:CommercialPaperMemberexc:DelmarvaPowerandLightCompanyMember2022-12-310001109357us-gaap:CommercialPaperMemberexc:AtlanticCityElectricCompanyMember2023-09-300001109357us-gaap:CommercialPaperMemberexc:AtlanticCityElectricCompanyMember2022-12-310001109357us-gaap:CommercialPaperMemberus-gaap:CorporateNonSegmentMember2023-09-300001109357us-gaap:CommercialPaperMemberus-gaap:CorporateNonSegmentMember2022-12-310001109357us-gaap:RevolvingCreditFacilityMemberus-gaap:CorporateNonSegmentMember2023-09-300001109357us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberus-gaap:RevolvingCreditFacilityMemberus-gaap:CorporateNonSegmentMember2023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:RevolvingCreditFacilityMember2023-09-300001109357us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberexc:CommonwealthEdisonCoMemberus-gaap:RevolvingCreditFacilityMember2023-09-300001109357us-gaap:RevolvingCreditFacilityMemberexc:PecoEnergyCoMember2023-09-300001109357us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberus-gaap:RevolvingCreditFacilityMemberexc:PecoEnergyCoMember2023-09-300001109357us-gaap:RevolvingCreditFacilityMemberexc:BaltimoreGasAndElectricCompanyMember2023-09-300001109357us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberus-gaap:RevolvingCreditFacilityMemberexc:BaltimoreGasAndElectricCompanyMember2023-09-300001109357us-gaap:RevolvingCreditFacilityMemberexc:PotomacElectricPowerCompanyMember2023-09-300001109357us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberus-gaap:RevolvingCreditFacilityMemberexc:PotomacElectricPowerCompanyMember2023-09-300001109357us-gaap:RevolvingCreditFacilityMemberexc:DelmarvaPowerandLightCompanyMember2023-09-300001109357us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberus-gaap:RevolvingCreditFacilityMemberexc:DelmarvaPowerandLightCompanyMember2023-09-300001109357us-gaap:RevolvingCreditFacilityMemberexc:AtlanticCityElectricCompanyMember2023-09-300001109357us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberus-gaap:RevolvingCreditFacilityMemberexc:AtlanticCityElectricCompanyMember2023-09-300001109357us-gaap:RevolvingCreditFacilityMemberus-gaap:CorporateNonSegmentMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:RevolvingCreditFacilityMember2023-01-012023-09-300001109357us-gaap:RevolvingCreditFacilityMemberexc:PecoEnergyCoMember2023-01-012023-09-300001109357us-gaap:RevolvingCreditFacilityMemberexc:PotomacElectricPowerCompanyMember2023-01-012023-09-300001109357us-gaap:RevolvingCreditFacilityMemberexc:DelmarvaPowerandLightCompanyMember2023-01-012023-09-300001109357us-gaap:RevolvingCreditFacilityMemberexc:AtlanticCityElectricCompanyMember2023-01-012023-09-300001109357us-gaap:RevolvingCreditFacilityMemberexc:BaltimoreGasAndElectricCompanyMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberus-gaap:LetterOfCreditMember2022-10-070001109357us-gaap:LetterOfCreditMemberexc:PecoEnergyCoMember2022-10-070001109357exc:BaltimoreGasAndElectricCompanyMemberus-gaap:LetterOfCreditMember2022-10-070001109357us-gaap:LetterOfCreditMemberexc:PotomacElectricPowerCompanyMember2022-10-070001109357exc:DelmarvaPowerandLightCompanyMemberus-gaap:LetterOfCreditMember2022-10-070001109357us-gaap:LetterOfCreditMemberexc:AtlanticCityElectricCompanyMember2022-10-070001109357exc:ShortTermDebt03232017Memberus-gaap:CorporateNonSegmentMember2017-03-230001109357us-gaap:CorporateNonSegmentMemberexc:ShortTermDebt03142023Member2023-03-140001109357us-gaap:CorporateNonSegmentMemberexc:ShortTermDebt03242023Member2023-03-240001109357us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberexc:ShortTermDebt03232017Memberus-gaap:CorporateNonSegmentMember2023-01-012023-09-300001109357exc:CommonwealthEdisonCoMemberexc:ShortTermDebtSOFRplus075Oct2023Member2022-10-040001109357us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberexc:CommonwealthEdisonCoMemberexc:ShortTermDebtSOFRplus075Oct2023Member2022-10-042022-10-040001109357exc:CommonwealthEdisonCoMemberus-gaap:FirstMortgageMemberexc:FMB490Feb2033Member2023-01-130001109357exc:CommonwealthEdisonCoMemberus-gaap:FirstMortgageMemberexc:FMB530Feb2053Member2023-01-130001109357exc:CommonwealthEdisonCoMemberexc:ShortTermDebtSOFRplus100May72024Member2023-05-090001109357us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberexc:CommonwealthEdisonCoMemberexc:ShortTermDebtSOFRplus100May72024Member2023-05-092023-05-090001109357exc:Notes515Mar2028Memberus-gaap:CorporateNonSegmentMemberus-gaap:NotesPayableToBanksMember2023-09-300001109357exc:Notes530Mar2033Memberus-gaap:CorporateNonSegmentMemberus-gaap:NotesPayableToBanksMember2023-09-300001109357us-gaap:CorporateNonSegmentMemberexc:Notes560Mar2053Memberus-gaap:NotesPayableToBanksMember2023-09-300001109357exc:CommonwealthEdisonCoMemberexc:ComEdFMB490Feb2033Memberexc:FirstMortgageBondsMember2023-09-300001109357exc:CommonwealthEdisonCoMemberexc:FirstMortgageBondsMemberexc:FMB530Feb2053Member2023-09-300001109357exc:PECOFMB575MMemberexc:FirstMortgageBondsMemberexc:PecoEnergyCoMember2023-09-300001109357us-gaap:SeniorNotesMemberexc:BaltimoreGasAndElectricCompanyMemberexc:SeniorNotes540June2053Member2023-09-300001109357exc:FirstMortgageBondsMemberexc:PotomacElectricPowerCompanyMemberexc:PepcoFMB530Mar2033Member2023-09-300001109357exc:FirstMortgageBondsMemberexc:PotomacElectricPowerCompanyMemberexc:FMB540Mar2038Member2023-09-300001109357exc:FirstMortgageBondsMemberexc:PotomacElectricPowerCompanyMemberexc:PepcoFMB557Mar2053Member2023-09-30