Document
0.004.670.000.700.000.100.480.820.010.370.700.590.120.150.050.020.041012000000479000000135800000029220000004P3Y2060000000P3Y3000000false--12-31FY20180000874761YesfalseLarge Accelerated FilerAES CORP0falseNoYesAES20000004000000100000002300000020000000.130.130.130.01120000000012000000008163129138172036916603881286622980960.01750.030.020.01750.030.020.04880.07380.081.42560.52690.9610229000000210000002000000266000000044000000000280000001300000001500000001500000031106000000100000006000000600000010000001000000100000010000001700000011000000200000020000000000006000000500000010000001000000100000010000008000000100000010000001000000240000001300000030000002000000135000000126000000200000020000007000000500000010000000130000002700000016000000P72YP40YP25YP44YP5YP7YP3YP5Y118100 0000874761 2018-12-31 0000874761 2018-01-01 2018-12-31 0000874761 2019-02-21 0000874761 2017-06-30 0000874761 2018-06-30 0000874761 2017-12-31 0000874761 us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2017-12-31 0000874761 us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2018-12-31 0000874761 2016-01-01 2016-12-31 0000874761 us-gaap:ElectricityGenerationMember 2016-01-01 2016-12-31 0000874761 2017-01-01 2017-12-31 0000874761 us-gaap:ElectricDistributionMember 2017-01-01 2017-12-31 0000874761 srt:ParentCompanyMember 2018-01-01 2018-12-31 0000874761 us-gaap:ElectricDistributionMember 2016-01-01 2016-12-31 0000874761 us-gaap:ElectricityGenerationMember 2017-01-01 2017-12-31 0000874761 us-gaap:ElectricityGenerationMember 2018-01-01 2018-12-31 0000874761 us-gaap:ElectricDistributionMember 2018-01-01 2018-12-31 0000874761 us-gaap:NoncontrollingInterestMember 2017-01-01 2017-12-31 0000874761 us-gaap:AdditionalPaidInCapitalMember 2018-12-31 0000874761 us-gaap:TreasuryStockMember 2017-01-01 2017-12-31 0000874761 us-gaap:TreasuryStockMember 2018-01-01 2018-12-31 0000874761 us-gaap:CommonStockMember 2017-01-01 2017-12-31 0000874761 us-gaap:TreasuryStockMember 2016-01-01 2016-12-31 0000874761 us-gaap:NoncontrollingInterestMember 2016-01-01 2016-12-31 0000874761 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2018-01-01 2018-12-31 0000874761 us-gaap:CommonStockMember 2016-01-01 2016-12-31 0000874761 us-gaap:TreasuryStockMember 2016-12-31 0000874761 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2016-01-01 2016-12-31 0000874761 us-gaap:RetainedEarningsMember 2016-01-01 2016-12-31 0000874761 us-gaap:CommonStockMember 2018-01-01 2018-12-31 0000874761 us-gaap:NoncontrollingInterestMember 2018-01-01 2018-12-31 0000874761 us-gaap:AdditionalPaidInCapitalMember 2018-01-01 2018-12-31 0000874761 us-gaap:RetainedEarningsMember 2018-01-01 2018-12-31 0000874761 us-gaap:AdditionalPaidInCapitalMember 2017-01-01 2017-12-31 0000874761 us-gaap:TreasuryStockMember 2017-12-31 0000874761 us-gaap:AdditionalPaidInCapitalMember 2016-01-01 2016-12-31 0000874761 us-gaap:RetainedEarningsMember 2017-01-01 2017-12-31 0000874761 us-gaap:RetainedEarningsMember 2018-12-31 0000874761 us-gaap:CommonStockMember 2016-12-31 0000874761 us-gaap:CommonStockMember 2018-12-31 0000874761 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2017-12-31 0000874761 us-gaap:AdditionalPaidInCapitalMember 2015-12-31 0000874761 us-gaap:RetainedEarningsMember 2015-12-31 0000874761 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2017-01-01 2017-12-31 0000874761 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2018-12-31 0000874761 us-gaap:CommonStockMember 2015-12-31 0000874761 us-gaap:NoncontrollingInterestMember 2016-12-31 0000874761 us-gaap:AdditionalPaidInCapitalMember 2016-12-31 0000874761 us-gaap:TreasuryStockMember 2018-12-31 0000874761 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2016-12-31 0000874761 us-gaap:CommonStockMember 2017-12-31 0000874761 us-gaap:NoncontrollingInterestMember 2018-12-31 0000874761 us-gaap:RetainedEarningsMember 2016-12-31 0000874761 us-gaap:AdditionalPaidInCapitalMember 2017-12-31 0000874761 aes:IPALCOEnterprisesInc.Member us-gaap:RetainedEarningsMember 2017-01-01 2017-12-31 0000874761 aes:IPALCOEnterprisesInc.Member us-gaap:RetainedEarningsMember 2018-01-01 2018-12-31 0000874761 us-gaap:NoncontrollingInterestMember 2017-12-31 0000874761 us-gaap:TreasuryStockMember 2015-12-31 0000874761 us-gaap:NoncontrollingInterestMember 2015-12-31 0000874761 aes:IPALCOEnterprisesInc.Member us-gaap:RetainedEarningsMember 2016-01-01 2016-12-31 0000874761 us-gaap:RetainedEarningsMember 2017-12-31 0000874761 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2015-12-31 0000874761 2015-12-31 0000874761 aes:FluenceMember aes:NoncashMember 2017-01-01 2017-12-31 0000874761 2016-12-31 0000874761 aes:FluenceMember aes:NoncashMember 2016-01-01 2016-12-31 0000874761 aes:DistributedEnergyMember 2018-01-01 2018-12-31 0000874761 aes:DistributedEnergyMember 2017-01-01 2017-12-31 0000874761 aes:FluenceMember aes:NoncashMember 2018-01-01 2018-12-31 0000874761 aes:DistributedEnergyMember 2016-01-01 2016-12-31 0000874761 aes:BalanceWithouttheAdoptionofASC606Member 2018-01-01 2018-12-31 0000874761 aes:ASC606ImpactMember 2018-01-01 2018-12-31 0000874761 srt:MinimumMember 2018-01-01 2018-12-31 0000874761 srt:MaximumMember 2018-01-01 2018-12-31 0000874761 2019-01-01 0000874761 2018-01-01 0000874761 aes:ASC606ImpactMember 2018-01-01 0000874761 aes:BalanceWithouttheAdoptionofASC606Member 2018-12-31 0000874761 aes:ASC606ImpactMember 2018-12-31 0000874761 aes:IncDecinCashprovidedbyOperatingActitvitiesDomain us-gaap:AccountingStandardsUpdate201618Member 2016-12-31 0000874761 aes:DecIncInNetCashUsedbyInvestingActivitiesDomain us-gaap:AccountingStandardsUpdate201618Member 2016-12-31 0000874761 aes:IncDecinCashprovidedbyOperatingActitvitiesDomain us-gaap:AccountingStandardsUpdate201618Member 2017-12-31 0000874761 aes:DecIncInNetCashUsedbyFinancingActivitiesDomain us-gaap:AccountingStandardsUpdate201618Member 2017-12-31 0000874761 us-gaap:AccountingStandardsUpdate201707Member us-gaap:OtherExpenseMember 2017-01-01 2017-12-31 0000874761 us-gaap:AccountingStandardsUpdate201707Member us-gaap:OtherExpenseMember 2016-01-01 2016-12-31 0000874761 aes:DecIncInNetCashUsedbyInvestingActivitiesDomain us-gaap:AccountingStandardsUpdate201618Member 2017-12-31 0000874761 aes:DecIncInNetCashUsedbyFinancingActivitiesDomain us-gaap:AccountingStandardsUpdate201618Member 2016-12-31 0000874761 aes:DplSubsidiaryMember 2018-01-01 2018-12-31 0000874761 aes:IplSubsidiaryMember 2018-01-01 2018-12-31 0000874761 us-gaap:ElectricGenerationTransmissionAndDistributionEquipmentMember 2017-12-31 0000874761 us-gaap:PropertyPlantAndEquipmentOtherTypesMember 2018-12-31 0000874761 us-gaap:BuildingAndBuildingImprovementsMember 2017-12-31 0000874761 us-gaap:FurnitureAndFixturesMember 2018-12-31 0000874761 us-gaap:ElectricGenerationTransmissionAndDistributionEquipmentMember 2018-12-31 0000874761 us-gaap:PropertyPlantAndEquipmentOtherTypesMember 2017-12-31 0000874761 us-gaap:FurnitureAndFixturesMember 2017-12-31 0000874761 us-gaap:BuildingAndBuildingImprovementsMember 2018-12-31 0000874761 us-gaap:RegulatedOperationMember 2018-12-31 0000874761 us-gaap:UnregulatedOperationMember 2018-12-31 0000874761 us-gaap:UnregulatedOperationMember 2017-12-31 0000874761 us-gaap:RegulatedOperationMember 2017-12-31 0000874761 srt:MaximumMember us-gaap:PropertyPlantAndEquipmentOtherTypesMember 2018-01-01 2018-12-31 0000874761 srt:MinimumMember us-gaap:BuildingAndBuildingImprovementsMember 2018-01-01 2018-12-31 0000874761 srt:MinimumMember us-gaap:ElectricGenerationTransmissionAndDistributionEquipmentMember 2018-01-01 2018-12-31 0000874761 srt:MaximumMember us-gaap:BuildingAndBuildingImprovementsMember 2018-01-01 2018-12-31 0000874761 srt:MaximumMember us-gaap:ElectricGenerationTransmissionAndDistributionEquipmentMember 2018-01-01 2018-12-31 0000874761 srt:MinimumMember us-gaap:PropertyPlantAndEquipmentOtherTypesMember 2018-01-01 2018-12-31 0000874761 srt:MinimumMember us-gaap:FurnitureAndFixturesMember 2018-01-01 2018-12-31 0000874761 srt:MaximumMember us-gaap:FurnitureAndFixturesMember 2018-01-01 2018-12-31 0000874761 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:FairValueInputsLevel2Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel3Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel2Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:FairValueInputsLevel1Member 2017-12-31 0000874761 us-gaap:EquitySecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000874761 us-gaap:DebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel1Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel1Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel2Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:FairValueInputsLevel2Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:EquitySecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000874761 us-gaap:FairValueInputsLevel2Member 2017-12-31 0000874761 us-gaap:FairValueInputsLevel3Member 2017-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel1Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000874761 us-gaap:EquitySecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel2Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:FairValueInputsLevel3Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:FairValueInputsLevel3Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:FairValueInputsLevel3Member 2018-12-31 0000874761 us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel2Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel1Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel3Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel3Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:FairValueInputsLevel1Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000874761 us-gaap:FairValueInputsLevel1Member 2018-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel3Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:DebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:FairValueInputsLevel3Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:FairValueInputsLevel1Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:DebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:FairValueInputsLevel2Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:OtherDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel1Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel3Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel1Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:FairValueInputsLevel2Member 2018-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:EquitySecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel1Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel2Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:DebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel2Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:FairValueInputsLevel1Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel3Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000874761 us-gaap:DebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000874761 us-gaap:OtherDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:FairValueInputsLevel1Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel1Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel2Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:DebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel3Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel3Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:EquitySecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000874761 us-gaap:DebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:OtherDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel2Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel2Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel1Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:OtherDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:FairValueInputsLevel2Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel3Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel2Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel1Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:FairValueInputsLevel2Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:FairValueInputsLevel3Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:FairValueInputsLevel1Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:DebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000874761 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel1Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:FairValueInputsLevel1Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:EquitySecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:FairValueInputsLevel3Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel1Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:OtherDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000874761 us-gaap:EquitySecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:FairValueInputsLevel3Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000874761 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000874761 us-gaap:OtherDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:OtherDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2017-12-31 0000874761 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel2Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:EquitySecuritiesMember us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel3Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel2Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:OtherDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:AvailableforsaleSecuritiesMember 2018-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:FairValueInputsLevel2Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel3Member us-gaap:DerivativeMember 2018-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:FairValueInputsLevel3Member us-gaap:DerivativeMember 2017-12-31 0000874761 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 us-gaap:CarryingReportedAmountFairValueDisclosureMember 2018-12-31 0000874761 us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 aes:DplSubsidiaryMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 aes:NejapaMember srt:WeightedAverageMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:MeasurementInputDiscountRateMember us-gaap:IncomeApproachValuationTechniqueMember 2018-01-01 2018-12-31 0000874761 aes:GuacoldaMember aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel3Member 2018-12-31 0000874761 aes:GuacoldaMember srt:WeightedAverageMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:MeasurementInputDiscountRateMember us-gaap:IncomeApproachValuationTechniqueMember 2018-01-01 2018-12-31 0000874761 aes:KilrootMember aes:LongLivedAssetsHeldAndUsedMember 2017-01-01 2017-12-31 0000874761 aes:KazakhstanHydroMember aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 aes:LaurelMountainMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2017-12-31 0000874761 aes:LaurelMountainMember aes:LongLivedAssetsHeldAndUsedMember 2017-01-01 2017-12-31 0000874761 aes:LaurelMountainMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2017-12-31 0000874761 aes:KilrootMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2017-12-31 0000874761 aes:DplSubsidiaryMember aes:LongLivedAssetsHeldAndUsedMember 2017-01-01 2017-12-31 0000874761 aes:DPLPeakingGenerationDomain aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 aes:KilrootMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:CarryingReportedAmountFairValueDisclosureMember 2017-12-31 0000874761 aes:KazakhstanHydroMember aes:LongLivedAssetsHeldForSaleMember us-gaap:CarryingReportedAmountFairValueDisclosureMember 2018-12-31 0000874761 aes:LaurelMountainMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:CarryingReportedAmountFairValueDisclosureMember 2017-12-31 0000874761 aes:DPLPeakingGenerationDomain aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 aes:DplSubsidiaryMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:CarryingReportedAmountFairValueDisclosureMember 2017-12-31 0000874761 aes:LongLivedAssetsHeldAndUsedMember us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2017-12-31 0000874761 aes:DplSubsidiaryMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2017-12-31 0000874761 aes:KazakhstanCHPMember aes:LongLivedAssetsHeldForSaleMember us-gaap:CarryingReportedAmountFairValueDisclosureMember 2018-12-31 0000874761 aes:KilrootMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2017-12-31 0000874761 aes:LongLivedAssetsHeldAndUsedMember us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2017-12-31 0000874761 aes:KazakhstanHydroMember aes:LongLivedAssetsHeldForSaleMember 2018-01-01 2018-12-31 0000874761 aes:LaurelMountainMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2017-12-31 0000874761 aes:KazakhstanHydroMember aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 aes:DPLPeakingGenerationDomain aes:LongLivedAssetsHeldForSaleMember us-gaap:CarryingReportedAmountFairValueDisclosureMember 2018-12-31 0000874761 aes:DplSubsidiaryMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2017-12-31 0000874761 aes:DPLPeakingGenerationDomain aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 aes:LongLivedAssetsHeldAndUsedMember us-gaap:CarryingReportedAmountFairValueDisclosureMember 2017-12-31 0000874761 aes:KilrootMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2017-12-31 0000874761 aes:LongLivedAssetsHeldAndUsedMember us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2017-12-31 0000874761 aes:KazakhstanCHPMember aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 aes:KazakhstanCHPMember aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 aes:DplSubsidiaryMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2017-12-31 0000874761 aes:LongLivedAssetsHeldAndUsedMember 2017-01-01 2017-12-31 0000874761 aes:KazakhstanCHPMember aes:LongLivedAssetsHeldForSaleMember 2018-01-01 2018-12-31 0000874761 aes:DPLPeakingGenerationDomain aes:LongLivedAssetsHeldForSaleMember 2018-01-01 2018-12-31 0000874761 aes:KazakhstanHydroMember aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 aes:KazakhstanCHPMember aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 us-gaap:CommodityContractMember 2018-01-01 2018-12-31 0000874761 us-gaap:CommodityContractMember aes:OthercomprehensiveincomeDerivativeactivityMember 2018-01-01 2018-12-31 0000874761 us-gaap:CommodityContractMember 2017-12-31 0000874761 us-gaap:InterestRateContractMember 2018-01-01 2018-12-31 0000874761 us-gaap:ForeignExchangeContractMember 2018-01-01 2018-12-31 0000874761 us-gaap:ForeignExchangeContractMember 2018-12-31 0000874761 us-gaap:InterestRateContractMember aes:OthercomprehensiveincomeDerivativeactivityMember 2018-01-01 2018-12-31 0000874761 aes:OthercomprehensiveincomeDerivativeactivityMember 2018-01-01 2018-12-31 0000874761 us-gaap:ForeignExchangeContractMember 2017-12-31 0000874761 us-gaap:CommodityContractMember 2018-12-31 0000874761 us-gaap:InterestRateContractMember 2017-12-31 0000874761 us-gaap:ForeignExchangeContractMember aes:OthercomprehensiveincomeDerivativeactivityMember 2018-01-01 2018-12-31 0000874761 us-gaap:InterestRateContractMember 2018-12-31 0000874761 us-gaap:InterestRateContractMember 2017-01-01 2017-12-31 0000874761 us-gaap:InterestRateContractMember 2016-12-31 0000874761 us-gaap:ForeignExchangeContractMember 2017-01-01 2017-12-31 0000874761 us-gaap:InterestRateContractMember aes:OthercomprehensiveincomeDerivativeactivityMember 2017-01-01 2017-12-31 0000874761 us-gaap:CommodityContractMember aes:OthercomprehensiveincomeDerivativeactivityMember 2017-01-01 2017-12-31 0000874761 us-gaap:CommodityContractMember 2017-01-01 2017-12-31 0000874761 us-gaap:ForeignExchangeContractMember 2016-12-31 0000874761 us-gaap:CommodityContractMember 2016-12-31 0000874761 aes:OthercomprehensiveincomeDerivativeactivityMember 2017-01-01 2017-12-31 0000874761 us-gaap:ForeignExchangeContractMember aes:OthercomprehensiveincomeDerivativeactivityMember 2017-01-01 2017-12-31 0000874761 aes:NejapaMember aes:LongLivedAssetsHeldForSaleMember 2018-01-01 2018-12-31 0000874761 aes:GuacoldaMember aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 aes:ShadyPointMember aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 aes:ShadyPointMember aes:LongLivedAssetsHeldForSaleMember 2018-01-01 2018-12-31 0000874761 aes:NejapaMember aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 aes:ShadyPointMember aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 aes:GuacoldaMember aes:LongLivedAssetsHeldForSaleMember us-gaap:CarryingReportedAmountFairValueDisclosureMember 2018-12-31 0000874761 aes:ElstaMember aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 aes:ElstaMember aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 aes:ShadyPointMember aes:LongLivedAssetsHeldForSaleMember us-gaap:CarryingReportedAmountFairValueDisclosureMember 2018-12-31 0000874761 aes:ShadyPointMember aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 aes:NejapaMember aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 aes:GuacoldaMember aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 aes:NejapaMember aes:LongLivedAssetsHeldForSaleMember us-gaap:CarryingReportedAmountFairValueDisclosureMember 2018-12-31 0000874761 aes:NejapaMember aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 aes:ElstaMember aes:LongLivedAssetsHeldForSaleMember us-gaap:CarryingReportedAmountFairValueDisclosureMember 2018-12-31 0000874761 aes:ElstaMember aes:LongLivedAssetsHeldForSaleMember 2018-01-01 2018-12-31 0000874761 aes:ElstaMember aes:LongLivedAssetsHeldForSaleMember us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2018-12-31 0000874761 us-gaap:FairValueInputsLevel3Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2017-12-31 0000874761 us-gaap:CarryingReportedAmountFairValueDisclosureMember 2017-12-31 0000874761 us-gaap:FairValueInputsLevel2Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2017-12-31 0000874761 us-gaap:FairValueInputsLevel1Member us-gaap:EstimateOfFairValueFairValueDisclosureMember 2017-12-31 0000874761 us-gaap:EstimateOfFairValueFairValueDisclosureMember 2017-12-31 0000874761 aes:KazakhstanHydroMember us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:KazakhstanHydroMember 2017-01-01 2017-06-30 0000874761 aes:GuacoldaMember srt:MaximumMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:MeasurementInputLongTermRevenueGrowthRateMember us-gaap:IncomeApproachValuationTechniqueMember 2018-01-01 2018-12-31 0000874761 aes:GuacoldaMember srt:WeightedAverageMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:MeasurementInputLongTermRevenueGrowthRateMember us-gaap:IncomeApproachValuationTechniqueMember 2018-01-01 2018-12-31 0000874761 aes:GuacoldaMember srt:MaximumMember aes:LongLivedAssetsHeldAndUsedMember aes:MeasurementInputOperatingMarginMember us-gaap:IncomeApproachValuationTechniqueMember 2018-01-01 2018-12-31 0000874761 aes:NejapaMember srt:WeightedAverageMember aes:LongLivedAssetsHeldAndUsedMember aes:MeasurementInputOperatingMarginMember us-gaap:IncomeApproachValuationTechniqueMember 2018-01-01 2018-12-31 0000874761 aes:GuacoldaMember srt:MinimumMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:MeasurementInputLongTermRevenueGrowthRateMember us-gaap:IncomeApproachValuationTechniqueMember 2018-01-01 2018-12-31 0000874761 aes:NejapaMember srt:MaximumMember aes:LongLivedAssetsHeldAndUsedMember aes:MeasurementInputOperatingMarginMember us-gaap:IncomeApproachValuationTechniqueMember 2018-01-01 2018-12-31 0000874761 aes:NejapaMember srt:MaximumMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:MeasurementInputLongTermRevenueGrowthRateMember us-gaap:IncomeApproachValuationTechniqueMember 2018-01-01 2018-12-31 0000874761 aes:GuacoldaMember srt:MinimumMember aes:LongLivedAssetsHeldAndUsedMember aes:MeasurementInputOperatingMarginMember us-gaap:IncomeApproachValuationTechniqueMember 2018-01-01 2018-12-31 0000874761 aes:GuacoldaMember srt:WeightedAverageMember aes:LongLivedAssetsHeldAndUsedMember aes:MeasurementInputOperatingMarginMember us-gaap:IncomeApproachValuationTechniqueMember 2018-01-01 2018-12-31 0000874761 aes:NejapaMember srt:MinimumMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:MeasurementInputLongTermRevenueGrowthRateMember us-gaap:IncomeApproachValuationTechniqueMember 2018-01-01 2018-12-31 0000874761 aes:NejapaMember srt:WeightedAverageMember aes:LongLivedAssetsHeldAndUsedMember us-gaap:MeasurementInputLongTermRevenueGrowthRateMember us-gaap:IncomeApproachValuationTechniqueMember 2018-01-01 2018-12-31 0000874761 aes:NejapaMember srt:MinimumMember aes:LongLivedAssetsHeldAndUsedMember aes:MeasurementInputOperatingMarginMember us-gaap:IncomeApproachValuationTechniqueMember 2018-01-01 2018-12-31 0000874761 currency:ARS srt:WeightedAverageMember us-gaap:ForeignExchangeContractMember 2018-12-31 0000874761 srt:MinimumMember us-gaap:InterestRateContractMember us-gaap:MeasurementInputEntityCreditRiskMember 2018-01-01 2018-12-31 0000874761 currency:ARS srt:MinimumMember us-gaap:ForeignExchangeContractMember 2018-12-31 0000874761 srt:MaximumMember us-gaap:InterestRateContractMember us-gaap:MeasurementInputEntityCreditRiskMember 2018-01-01 2018-12-31 0000874761 currency:ARS srt:MaximumMember us-gaap:ForeignExchangeContractMember 2018-12-31 0000874761 srt:WeightedAverageMember us-gaap:InterestRateContractMember us-gaap:MeasurementInputEntityCreditRiskMember 2018-01-01 2018-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:CashFlowHedgingMember 2018-12-31 0000874761 us-gaap:CashFlowHedgingMember 2017-01-01 2017-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:CashFlowHedgingMember 2016-01-01 2016-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:CashFlowHedgingMember 2017-01-01 2017-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:CashFlowHedgingMember 2017-01-01 2017-12-31 0000874761 us-gaap:CashFlowHedgingMember 2018-01-01 2018-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:CashFlowHedgingMember 2016-01-01 2016-12-31 0000874761 us-gaap:CashFlowHedgingMember 2016-01-01 2016-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:CashFlowHedgingMember 2016-01-01 2016-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:CashFlowHedgingMember 2018-01-01 2018-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:CashFlowHedgingMember 2018-01-01 2018-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:CashFlowHedgingMember 2017-01-01 2017-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:CashFlowHedgingMember 2018-01-01 2018-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:CashFlowHedgingMember 2017-01-01 2017-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:CashFlowHedgingMember 2018-01-01 2018-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:CashFlowHedgingMember 2016-01-01 2016-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:NondesignatedMember 2017-12-31 0000874761 us-gaap:NondesignatedMember 2018-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:NondesignatedMember 2018-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2017-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2017-12-31 0000874761 us-gaap:NondesignatedMember 2017-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2017-12-31 0000874761 us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2017-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember 2017-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0000874761 us-gaap:InterestRateContractMember us-gaap:NondesignatedMember 2017-12-31 0000874761 us-gaap:DesignatedAsHedgingInstrumentMember 2017-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember 2018-12-31 0000874761 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2018-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:NondesignatedMember 2017-12-31 0000874761 us-gaap:CommodityContractMember us-gaap:NondesignatedMember 2018-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:NondesignatedMember 2018-12-31 0000874761 us-gaap:CrossCurrencyInterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2017-12-31 0000874761 aes:LiborandEuriborMember us-gaap:InterestRateContractMember 2018-12-31 0000874761 currency:ARS us-gaap:ForeignExchangeContractMember 2018-12-31 0000874761 currency:CLP us-gaap:ForeignExchangeContractMember 2018-12-31 0000874761 currency:EUR us-gaap:ForeignExchangeContractMember 2018-12-31 0000874761 aes:OtherunspecifiedcurrencyDomain us-gaap:ForeignExchangeContractMember 2018-12-31 0000874761 currency:COP us-gaap:ForeignExchangeContractMember 2018-12-31 0000874761 currency:CLF us-gaap:CrossCurrencyInterestRateContractMember 2018-12-31 0000874761 aes:ContractsSubjectToNettingArrangementsMember 2017-12-31 0000874761 country:BR 2017-12-31 0000874761 country:PA 2018-12-31 0000874761 country:PA 2017-12-31 0000874761 country:BR 2018-12-31 0000874761 country:AR 2018-12-31 0000874761 country:AR 2017-12-31 0000874761 aes:GuacoldaAffiliateMember 2018-12-31 0000874761 aes:OpgcAffiliateMember 2018-12-31 0000874761 aes:GuacoldaAffiliateMember 2017-12-31 0000874761 aes:SPowerMember 2017-12-31 0000874761 aes:OpgcAffiliateMember 2017-12-31 0000874761 aes:SPowerMember 2018-12-31 0000874761 us-gaap:OtherAffiliatesMember 2018-12-31 0000874761 us-gaap:OtherAffiliatesMember 2017-12-31 0000874761 aes:FluenceMember aes:NoncashMember 2018-01-01 2018-01-01 0000874761 aes:FluenceMember 2018-01-01 0000874761 aes:SimpleEnergyMember 2018-04-09 2018-04-09 0000874761 aes:SPowerMember 2017-07-25 2017-07-25 0000874761 aes:SPowerMember 2017-11-15 2017-11-15 0000874761 aes:SPowerMember 2017-07-25 0000874761 aes:SPowerMember 2017-11-15 0000874761 aes:GuacoldaAffiliateMember aes:GenerSubsidiaryMember 2018-12-31 0000874761 aes:GenerSubsidiaryMember 2018-12-31 0000874761 aes:BarryAffiliateMember 2017-12-31 0000874761 aes:FluenceMember 2018-01-01 2018-01-01 0000874761 aes:BarryAffiliateMember 2018-12-31 0000874761 aes:MajorityOwnedAffiliatesMember 2016-01-01 2016-12-31 0000874761 aes:MinorityOwnedAffiliatesMember 2016-01-01 2016-12-31 0000874761 aes:MajorityOwnedAffiliatesMember 2017-12-31 0000874761 aes:MajorityOwnedAffiliatesMember 2018-12-31 0000874761 aes:MajorityOwnedAffiliatesMember 2017-01-01 2017-12-31 0000874761 aes:MinorityOwnedAffiliatesMember 2017-12-31 0000874761 aes:MinorityOwnedAffiliatesMember 2017-01-01 2017-12-31 0000874761 aes:MinorityOwnedAffiliatesMember 2018-12-31 0000874761 aes:MinorityOwnedAffiliatesMember 2018-01-01 2018-12-31 0000874761 aes:MajorityOwnedAffiliatesMember 2018-01-01 2018-12-31 0000874761 us-gaap:ContractBasedIntangibleAssetsMember 2018-01-01 2018-12-31 0000874761 aes:ProjectDevelopmentRightsMember 2018-01-01 2018-12-31 0000874761 us-gaap:OtherIntangibleAssetsMember 2018-01-01 2018-12-31 0000874761 us-gaap:ComputerSoftwareIntangibleAssetMember 2018-01-01 2018-12-31 0000874761 aes:EmissionAllowancesMember 2018-01-01 2018-12-31 0000874761 aes:NejapaMember aes:LongLivedAssetsHeldAndUsedMember 2018-01-01 2018-12-31 0000874761 us-gaap:ComputerSoftwareIntangibleAssetMember 2018-12-31 0000874761 us-gaap:OtherIntangibleAssetsMember 2018-12-31 0000874761 us-gaap:ContractBasedIntangibleAssetsMember 2018-12-31 0000874761 aes:ProjectDevelopmentRightsMember 2018-12-31 0000874761 aes:EmissionAllowancesMember 2017-12-31 0000874761 aes:WaterRightsMember 2017-12-31 0000874761 us-gaap:UseRightsMember 2018-12-31 0000874761 us-gaap:OtherIntangibleAssetsMember 2017-12-31 0000874761 aes:OtherIndefiniteLivedIntangibleAssetsMember 2018-12-31 0000874761 aes:ProjectDevelopmentRightsMember 2017-12-31 0000874761 us-gaap:ContractualRightsMember 2018-12-31 0000874761 us-gaap:ContractualRightsMember 2017-12-31 0000874761 us-gaap:CustomerContractsMember 2017-12-31 0000874761 aes:WaterRightsMember 2018-12-31 0000874761 us-gaap:UseRightsMember 2017-12-31 0000874761 aes:EmissionAllowancesMember 2018-12-31 0000874761 aes:OtherIndefiniteLivedIntangibleAssetsMember 2017-12-31 0000874761 us-gaap:ComputerSoftwareIntangibleAssetMember 2017-12-31 0000874761 us-gaap:CustomerContractsMember 2018-12-31 0000874761 us-gaap:OperatingSegmentsMember aes:ANDESMember 2018-12-31 0000874761 us-gaap:OperatingSegmentsMember country:US 2017-12-31 0000874761 us-gaap:OperatingSegmentsMember aes:MCACMember 2018-12-31 0000874761 us-gaap:OperatingSegmentsMember aes:MCACMember 2017-12-31 0000874761 us-gaap:OperatingSegmentsMember country:US 2018-12-31 0000874761 us-gaap:OperatingSegmentsMember aes:EURASIAMember 2017-12-31 0000874761 us-gaap:OperatingSegmentsMember aes:EURASIAMember 2018-12-31 0000874761 us-gaap:OperatingSegmentsMember aes:ANDESMember 2017-12-31 0000874761 us-gaap:ContractBasedIntangibleAssetsMember 2017-01-01 2017-12-31 0000874761 us-gaap:ComputerSoftwareIntangibleAssetMember 2017-01-01 2017-12-31 0000874761 us-gaap:OtherIntangibleAssetsMember 2017-01-01 2017-12-31 0000874761 aes:ProjectDevelopmentRightsMember 2017-01-01 2017-12-31 0000874761 aes:OtherRegulatoryAssetsMember 2017-12-31 0000874761 aes:OvercollectionofCostsMember 2017-12-31 0000874761 us-gaap:EnvironmentalRestorationCostsMember 2017-12-31 0000874761 aes:OtherRegulatoryLiabilitiesMember 2018-12-31 0000874761 aes:OvercollectionofCostsMember 2018-12-31 0000874761 us-gaap:AssetRetirementObligationCostsMember 2017-12-31 0000874761 aes:DeferredMidwestIndependentServiceOperatorCostsMember 2017-12-31 0000874761 us-gaap:EnvironmentalRestorationCostsMember 2018-12-31 0000874761 aes:ElSalvadorTariffRecoveriesMember 2017-12-31 0000874761 us-gaap:AssetRetirementObligationCostsMember 2018-12-31 0000874761 aes:OtherRegulatoryLiabilitiesMember 2017-12-31 0000874761 us-gaap:PensionCostsMember 2017-12-31 0000874761 aes:ElSalvadorTariffRecoveriesMember 2018-12-31 0000874761 aes:DeferredMidwestIndependentServiceOperatorCostsMember 2018-12-31 0000874761 us-gaap:PensionCostsMember 2018-12-31 0000874761 aes:OtherRegulatoryAssetsMember 2018-12-31 0000874761 us-gaap:DeferredIncomeTaxChargesMember 2017-12-31 0000874761 us-gaap:DeferredIncomeTaxChargesMember 2018-12-31 0000874761 aes:NonrecourseDebtMember 2018-12-31 0000874761 aes:NonrecourseDebtMember 2018-12-31 0000874761 aes:A5.50Unsecuredseniornotesdue2025Domain srt:ParentCompanyMember aes:RecourseDebtMember 2018-12-31 0000874761 us-gaap:RevolvingCreditFacilityMember srt:ParentCompanyMember aes:RecourseDebtMember 2018-12-31 0000874761 aes:A4.0SeniorNotesDue2021DomainDomain srt:ParentCompanyMember aes:RecourseDebtMember 2017-12-31 0000874761 us-gaap:RevolvingCreditFacilityMember srt:ParentCompanyMember aes:RecourseDebtMember 2017-12-31 0000874761 aes:A4.5SeniorNotesDue2023DomainDomain srt:ParentCompanyMember aes:RecourseDebtMember 2017-12-31 0000874761 aes:SeniorSecuredTermLoandue2022Member srt:ParentCompanyMember aes:RecourseDebtMember 2018-12-31 0000874761 aes:A4.0SeniorNotesDue2021DomainDomain srt:ParentCompanyMember aes:RecourseDebtMember 2018-12-31 0000874761 aes:A5.50SeniorUnsecuredNoteDue2024Member srt:ParentCompanyMember aes:RecourseDebtMember 2018-12-31 0000874761 aes:UnamortizedDiscountsMember srt:ParentCompanyMember 2018-12-31 0000874761 aes:A7.375SeniorNotesDue2021MemberMember srt:ParentCompanyMember aes:RecourseDebtMember 2018-12-31 0000874761 aes:SeniorUnsecuredNote800Due2020Member srt:ParentCompanyMember aes:RecourseDebtMember us-gaap:LondonInterbankOfferedRateLIBORMember 2018-12-31 0000874761 aes:A5.50SeniorUnsecuredNoteDue2024Member srt:ParentCompanyMember aes:RecourseDebtMember 2017-12-31 0000874761 aes:SeniorUnsecuredNote800Due2020Member srt:ParentCompanyMember aes:RecourseDebtMember 2018-12-31 0000874761 aes:A4.875SeniorNotesDue2023MemberMember srt:ParentCompanyMember aes:RecourseDebtMember 2018-12-31 0000874761 aes:A6.00seniornotesdue2026Domain srt:ParentCompanyMember aes:RecourseDebtMember 2018-12-31 0000874761 aes:SeniorUnsecuredNote800Due2020Member srt:ParentCompanyMember aes:RecourseDebtMember us-gaap:LondonInterbankOfferedRateLIBORMember 2017-12-31 0000874761 aes:SeniorSecuredTermLoandue2022Member srt:ParentCompanyMember aes:RecourseDebtMember 2017-12-31 0000874761 aes:A7.375SeniorNotesDue2021MemberMember srt:ParentCompanyMember aes:RecourseDebtMember 2017-12-31 0000874761 aes:A5.125SeniorNotesDue2027Member srt:ParentCompanyMember aes:RecourseDebtMember 2017-12-31 0000874761 aes:A4.5SeniorNotesDue2023DomainDomain srt:ParentCompanyMember aes:RecourseDebtMember 2018-12-31 0000874761 aes:A6.00seniornotesdue2026Domain srt:ParentCompanyMember aes:RecourseDebtMember 2017-12-31 0000874761 aes:A5.125SeniorNotesDue2027Member srt:ParentCompanyMember aes:RecourseDebtMember 2018-12-31 0000874761 aes:A4.875SeniorNotesDue2023MemberMember srt:ParentCompanyMember aes:RecourseDebtMember 2017-12-31 0000874761 aes:A5.50Unsecuredseniornotesdue2025Domain srt:ParentCompanyMember aes:RecourseDebtMember 2017-12-31 0000874761 aes:UnamortizedDiscountsMember srt:ParentCompanyMember 2017-12-31 0000874761 aes:NonrecourseDebtMember 2018-01-01 2018-12-31 0000874761 aes:GenerSubsidiaryMember aes:NonrecourseDebtMember 2018-12-31 0000874761 aes:AESSouthlandDomain aes:NonrecourseDebtMember 2018-01-01 2018-12-31 0000874761 aes:IPALCOEnterprisesInc.Member aes:NonrecourseDebtMember 2018-01-01 2018-12-31 0000874761 aes:GenerSubsidiaryMember aes:NonrecourseDebtMember 2018-01-01 2018-12-31 0000874761 aes:AESTieteDomain aes:NonrecourseDebtMember 2018-01-01 2018-12-31 0000874761 aes:AESArgentinaMember aes:NonrecourseDebtMember 2018-12-31 0000874761 aes:McacGenerationMember aes:NonrecourseDebtMember 2018-01-01 2018-12-31 0000874761 aes:IPALCOEnterprisesInc.Member aes:NonrecourseDebtMember 2018-12-31 0000874761 aes:AESSouthlandDomain aes:NonrecourseDebtMember 2018-12-31 0000874761 aes:McacGenerationMember aes:NonrecourseDebtMember 2018-12-31 0000874761 aes:AESTieteDomain aes:NonrecourseDebtMember 2018-12-31 0000874761 aes:LosMinaMember aes:NonrecourseDebtMember 2018-01-01 2018-12-31 0000874761 aes:AESArgentinaMember aes:NonrecourseDebtMember 2018-01-01 2018-12-31 0000874761 aes:LosMinaMember aes:NonrecourseDebtMember 2018-12-31 0000874761 us-gaap:LoansPayableMember aes:VariableRateDebtMember 2018-12-31 0000874761 aes:FixedRateDebtMember aes:MultilateralDebtMember 2018-12-31 0000874761 aes:OtherNonrecourseDebtMember aes:FixedRateDebtMember 2018-12-31 0000874761 aes:FixedRateDebtMember us-gaap:NotesPayableToBanksMember 2018-12-31 0000874761 aes:FixedRateDebtMember aes:OtherNonrecourseDebtMember 2018-12-31 0000874761 us-gaap:LoansPayableMember aes:FixedRateDebtMember 2018-12-31 0000874761 aes:VariableRateDebtMember us-gaap:LoansPayableMember 2017-12-31 0000874761 aes:VariableRateDebtMember aes:MultilateralDebtMember 2017-12-31 0000874761 us-gaap:NotesPayableToBanksMember aes:VariableRateDebtMember 2018-12-31 0000874761 aes:FixedRateDebtMember aes:MultilateralDebtMember 2017-12-31 0000874761 aes:FixedRateDebtMember us-gaap:LoansPayableMember 2017-12-31 0000874761 aes:FixedRateDebtMember aes:OtherNonrecourseDebtMember 2017-12-31 0000874761 aes:MultilateralDebtMember aes:FixedRateDebtMember 2018-12-31 0000874761 aes:VariableRateDebtMember us-gaap:NotesPayableToBanksMember 2017-12-31 0000874761 aes:VariableRateDebtMember aes:MultilateralDebtMember 2018-12-31 0000874761 aes:FixedRateDebtMember us-gaap:LoansPayableMember 2018-12-31 0000874761 aes:VariableRateDebtMember us-gaap:NotesPayableToBanksMember 2018-12-31 0000874761 aes:FixedRateDebtMember us-gaap:NotesPayableToBanksMember 2017-12-31 0000874761 aes:MultilateralDebtMember aes:VariableRateDebtMember 2018-12-31 0000874761 aes:VariableRateDebtMember us-gaap:LoansPayableMember 2018-12-31 0000874761 us-gaap:NotesPayableToBanksMember aes:FixedRateDebtMember 2018-12-31 0000874761 aes:SulSubsidiaryMember aes:CovenantViolationMember 2018-12-31 0000874761 aes:MaritzaMember aes:CovenantViolationMember 2018-12-31 0000874761 aes:MaritzaMember 2018-12-31 0000874761 aes:DebtMaturityYearTwoMember srt:ParentCompanyMember 2018-12-31 0000874761 aes:UnamortizedDiscountsMember 2018-12-31 0000874761 aes:DebtMaturityYearThreeMember srt:ParentCompanyMember 2018-12-31 0000874761 aes:DebtMaturityYearFiveMember srt:ParentCompanyMember 2018-12-31 0000874761 aes:DebtMaturityYearFourMember srt:ParentCompanyMember 2018-12-31 0000874761 aes:DebtMaturityYearOneMember srt:ParentCompanyMember 2018-12-31 0000874761 aes:DebtMaturityThereafterMember srt:ParentCompanyMember 2018-12-31 0000874761 aes:A8.0SeniorNotesDue2020Domain us-gaap:UnsecuredDebtMember 2018-12-31 0000874761 1999-12-31 0000874761 aes:A7.375SeniorNotesDue2021MemberMember 2018-01-01 2018-12-31 0000874761 aes:AESArgentinaMember us-gaap:UnsecuredDebtMember 2017-01-01 2017-12-31 0000874761 aes:SeniorSecuredTermLoandue2022Member us-gaap:UnsecuredDebtMember aes:RecourseDebtMember 2018-01-01 2018-12-31 0000874761 aes:A4.5SeniorNotesDue2023DomainDomain us-gaap:UnsecuredDebtMember 2018-12-31 0000874761 aes:RecourseDebtMember 2018-12-31 0000874761 1999-01-01 2000-12-31 0000874761 aes:SeniorUnsecuredNoteLIBORplus3due2019Member us-gaap:UnsecuredDebtMember 2017-01-01 2017-09-30 0000874761 aes:A5.125SeniorNotesDue2017Member us-gaap:SeniorNotesMember 2017-09-30 0000874761 aes:A5.5SeniorNotesDue2024MemberMember us-gaap:SeniorNotesMember 2018-12-31 0000874761 aes:A7.375SeniorNotesDue2021MemberMember us-gaap:UnsecuredDebtMember 2017-03-01 0000874761 aes:A5.5SeniorNotesDue2025MemberMember us-gaap:SeniorNotesMember 2018-12-31 0000874761 aes:A5.5SeniorNotesDue2024MemberMember us-gaap:UnsecuredDebtMember aes:RecourseDebtMember 2018-01-01 2018-12-31 0000874761 aes:A7.375SeniorNotesDue2021MemberMember 2017-03-01 2017-03-31 0000874761 aes:A8.0SeniorNotesDue2020Domain us-gaap:UnsecuredDebtMember 2017-03-01 0000874761 aes:A8.0SeniorNotesDue2020Domain 2018-01-01 2018-12-31 0000874761 aes:LIBOR2.00SeniorNotesDuein2022Member 2017-01-01 2017-09-30 0000874761 aes:A4.0SeniorNotesDue2021DomainDomain us-gaap:SeniorNotesMember 2018-12-31 0000874761 aes:SeniorUnsecuredNoteLIBORplus3due2019Member us-gaap:SeniorNotesMember 2017-01-01 2017-09-30 0000874761 aes:AESArgentinaMember us-gaap:UnsecuredDebtMember 2017-02-28 0000874761 aes:LIBOR2.00SeniorNotesDuein2022Member us-gaap:SeniorNotesMember 2017-07-01 2017-09-30 0000874761 aes:A4.5SeniorNotesDue2023DomainDomain us-gaap:SeniorNotesMember 2018-12-31 0000874761 aes:A8.0SeniorNotesDue2020Domain us-gaap:UnsecuredDebtMember 2017-09-30 0000874761 aes:A7.375SeniorNotesDue2021MemberMember us-gaap:UnsecuredDebtMember 2018-12-31 0000874761 aes:ColonDomain aes:CovenantViolationMember 2018-12-31 0000874761 aes:A8.0SeniorNotesDue2020Domain us-gaap:SeniorNotesMember 2017-01-01 2017-09-30 0000874761 aes:A8.0SeniorNotesDue2020Domain 2017-03-01 2017-03-31 0000874761 aes:A5.5SeniorNotesDue2024MemberMember 2018-01-01 2018-12-31 0000874761 aes:LIBOR2.00SeniorNotesDuein2022Member us-gaap:SeniorNotesMember 2017-09-30 0000874761 aes:A4.0SeniorNotesDue2021DomainDomain us-gaap:UnsecuredDebtMember 2018-12-31 0000874761 aes:A5.125SeniorNotesDue2027Member us-gaap:UnsecuredDebtMember 2017-03-01 0000874761 aes:AESArgentinaMember aes:NonrecourseDebtMember 2017-02-28 0000874761 aes:A4.0SeniorNotesDue2021DomainDomain us-gaap:UnsecuredDebtMember aes:RecourseDebtMember 2018-01-01 2018-12-31 0000874761 aes:A5.5SeniorNotesDue2025MemberMember 2018-01-01 2018-12-31 0000874761 aes:A8.0SeniorNotesDue2020Domain us-gaap:UnsecuredDebtMember 2017-01-01 2017-09-30 0000874761 aes:SeniorSecuredTermLoandue2022Member aes:RecourseDebtMember us-gaap:LondonInterbankOfferedRateLIBORMember 2017-01-01 2017-12-31 0000874761 us-gaap:RevolvingCreditFacilityMember aes:RecourseDebtMember us-gaap:LondonInterbankOfferedRateLIBORMember 2018-01-01 2018-12-31 0000874761 us-gaap:RevolvingCreditFacilityMember aes:RecourseDebtMember us-gaap:LondonInterbankOfferedRateLIBORMember 2017-01-01 2017-12-31 0000874761 aes:SeniorSecuredTermLoandue2022Member aes:RecourseDebtMember us-gaap:LondonInterbankOfferedRateLIBORMember 2018-01-01 2018-12-31 0000874761 aes:OtherPurchaseContractsMember 2016-01-01 2016-12-31 0000874761 aes:ElectricityPurchaseContractsMember 2018-12-31 0000874761 aes:ElectricityPurchaseContractsMember 2017-01-01 2017-12-31 0000874761 aes:OtherPurchaseContractsMember 2018-12-31 0000874761 aes:ElectricityPurchaseContractsMember 2018-01-01 2018-12-31 0000874761 aes:FuelPurchaseContractsMember 2018-12-31 0000874761 aes:ElectricityPurchaseContractsMember 2016-01-01 2016-12-31 0000874761 aes:FuelPurchaseContractsMember 2016-01-01 2016-12-31 0000874761 aes:OtherPurchaseContractsMember 2017-01-01 2017-12-31 0000874761 aes:OtherPurchaseContractsMember 2018-01-01 2018-12-31 0000874761 aes:FuelPurchaseContractsMember 2017-01-01 2017-12-31 0000874761 aes:FuelPurchaseContractsMember 2018-01-01 2018-12-31 0000874761 srt:MaximumMember aes:LitigationMember 2018-12-31 0000874761 aes:LitigationMember 2018-12-31 0000874761 srt:MaximumMember us-gaap:EnvironmentalRemediationContingencyDomain 2018-12-31 0000874761 srt:MinimumMember us-gaap:StandbyLettersOfCreditMember 2018-01-01 2018-12-31 0000874761 aes:LitigationMember 2017-12-31 0000874761 srt:MinimumMember aes:LitigationMember 2018-12-31 0000874761 srt:MaximumMember us-gaap:StandbyLettersOfCreditMember 2018-01-01 2018-12-31 0000874761 us-gaap:EnvironmentalRemediationContingencyDomain 2018-12-31 0000874761 us-gaap:SecuredDebtMember us-gaap:FinancialStandbyLetterOfCreditMember 2018-12-31 0000874761 us-gaap:UnsecuredDebtMember us-gaap:FinancialStandbyLetterOfCreditMember 2018-12-31 0000874761 us-gaap:IndemnificationGuaranteeMember 2018-12-31 0000874761 us-gaap:GuaranteesMember 2018-12-31 0000874761 srt:MaximumMember us-gaap:IndemnificationGuaranteeMember 2018-12-31 0000874761 srt:MaximumMember us-gaap:SecuredDebtMember us-gaap:FinancialStandbyLetterOfCreditMember 2018-12-31 0000874761 srt:MaximumMember us-gaap:UnsecuredDebtMember us-gaap:FinancialStandbyLetterOfCreditMember 2018-12-31 0000874761 srt:MaximumMember us-gaap:GuaranteeObligationsMember 2018-12-31 0000874761 srt:MinimumMember us-gaap:UnsecuredDebtMember us-gaap:FinancialStandbyLetterOfCreditMember 2018-12-31 0000874761 srt:MinimumMember us-gaap:GuaranteeObligationsMember 2018-12-31 0000874761 srt:MinimumMember us-gaap:SecuredDebtMember us-gaap:FinancialStandbyLetterOfCreditMember 2018-12-31 0000874761 country:US 2016-01-01 2016-12-31 0000874761 country:US 2018-01-01 2018-12-31 0000874761 country:US 2017-01-01 2017-12-31 0000874761 us-gaap:ForeignPlanMember 2016-01-01 2016-12-31 0000874761 us-gaap:ForeignPlanMember 2018-01-01 2018-12-31 0000874761 us-gaap:ForeignPlanMember 2017-01-01 2017-12-31 0000874761 us-gaap:ForeignPlanMember 2018-12-31 0000874761 country:US 2018-12-31 0000874761 us-gaap:ForeignPlanMember 2017-12-31 0000874761 country:US 2017-12-31 0000874761 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:OtherAssetsMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:PrivateEquityFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:PrivateEquityFundsMember us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:PrivateEquityFundsMember us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:RealEstateMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:RealEstateMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:PrivateEquityFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:OtherAssetsMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:OtherAssetsMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:RealEstateMember us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:RealEstateMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:OtherAssetsMember us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:FixedIncomeFundsMember us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:OtherAssetsMember us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:PrivateEquityFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:RealEstateMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:PrivateEquityFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:CashAndCashEquivalentsMember us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:OtherAssetsMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:RealEstateMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:FixedIncomeFundsMember us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:RealEstateMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:OtherAssetsMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:RealEstateMember us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:CashAndCashEquivalentsMember us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:PrivateEquityFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:PrivateEquityFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:OtherAssetsMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:DebtSecuritiesMember us-gaap:ForeignPlanMember 2018-12-31 0000874761 aes:OtherPlanInvestmentsMember us-gaap:ForeignPlanMember 2018-12-31 0000874761 us-gaap:RealEstateMember country:US 2018-12-31 0000874761 us-gaap:DebtSecuritiesMember country:US 2018-12-31 0000874761 us-gaap:DebtSecuritiesMember us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:EquitySecuritiesMember us-gaap:ForeignPlanMember 2018-12-31 0000874761 aes:OtherPlanInvestmentsMember country:US 2017-12-31 0000874761 aes:OtherPlanInvestmentsMember country:US 2018-12-31 0000874761 us-gaap:RealEstateMember country:US 2017-12-31 0000874761 aes:OtherPlanInvestmentsMember us-gaap:ForeignPlanMember 2017-12-31 0000874761 us-gaap:DebtSecuritiesMember country:US 2017-12-31 0000874761 us-gaap:EquitySecuritiesMember country:US 2018-12-31 0000874761 us-gaap:EquitySecuritiesMember country:US 2017-12-31 0000874761 us-gaap:EquitySecuritiesMember us-gaap:ForeignPlanMember 2017-12-31 0000874761 country:US 2016-12-31 0000874761 us-gaap:ForeignPlanMember 2016-12-31 0000874761 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel3Member country:US 2018-12-31 0000874761 us-gaap:FairValueInputsLevel3Member country:US 2018-12-31 0000874761 us-gaap:USTreasuryAndGovernmentMember us-gaap:FairValueInputsLevel3Member country:US 2017-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel2Member country:US 2017-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel3Member country:US 2017-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel3Member country:US 2018-12-31 0000874761 us-gaap:EquityFundsMember country:US 2018-12-31 0000874761 us-gaap:EquityFundsMember country:US 2017-12-31 0000874761 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel3Member country:US 2017-12-31 0000874761 us-gaap:CashAndCashEquivalentsMember country:US 2018-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel1Member country:US 2017-12-31 0000874761 us-gaap:RealEstateMember us-gaap:FairValueInputsLevel3Member country:US 2018-12-31 0000874761 us-gaap:USTreasuryAndGovernmentMember us-gaap:FairValueInputsLevel2Member country:US 2018-12-31 0000874761 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel2Member country:US 2017-12-31 0000874761 us-gaap:FairValueInputsLevel3Member country:US 2017-12-31 0000874761 us-gaap:CashAndCashEquivalentsMember country:US 2017-12-31 0000874761 us-gaap:RealEstateMember us-gaap:FairValueInputsLevel1Member country:US 2018-12-31 0000874761 us-gaap:FairValueInputsLevel1Member country:US 2017-12-31 0000874761 us-gaap:USTreasuryAndGovernmentMember country:US 2018-12-31 0000874761 us-gaap:FairValueInputsLevel1Member country:US 2018-12-31 0000874761 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel2Member country:US 2017-12-31 0000874761 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel2Member country:US 2018-12-31 0000874761 us-gaap:USTreasuryAndGovernmentMember us-gaap:FairValueInputsLevel1Member country:US 2018-12-31 0000874761 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel1Member country:US 2018-12-31 0000874761 us-gaap:USTreasuryAndGovernmentMember us-gaap:FairValueInputsLevel1Member country:US 2017-12-31 0000874761 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel1Member country:US 2017-12-31 0000874761 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel2Member country:US 2018-12-31 0000874761 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel3Member country:US 2018-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel1Member country:US 2018-12-31 0000874761 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel1Member country:US 2018-12-31 0000874761 us-gaap:FairValueInputsLevel2Member country:US 2017-12-31 0000874761 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel1Member country:US 2017-12-31 0000874761 us-gaap:RealEstateMember us-gaap:FairValueInputsLevel2Member country:US 2017-12-31 0000874761 us-gaap:USTreasuryAndGovernmentMember us-gaap:FairValueInputsLevel2Member country:US 2017-12-31 0000874761 us-gaap:RealEstateMember us-gaap:FairValueInputsLevel2Member country:US 2018-12-31 0000874761 us-gaap:RealEstateMember us-gaap:FairValueInputsLevel3Member country:US 2017-12-31 0000874761 us-gaap:EquityFundsMember us-gaap:FairValueInputsLevel2Member country:US 2018-12-31 0000874761 us-gaap:FixedIncomeFundsMember country:US 2018-12-31 0000874761 us-gaap:FixedIncomeFundsMember us-gaap:FairValueInputsLevel3Member country:US 2017-12-31 0000874761 us-gaap:USTreasuryAndGovernmentMember country:US 2017-12-31 0000874761 us-gaap:FairValueInputsLevel2Member country:US 2018-12-31 0000874761 us-gaap:USTreasuryAndGovernmentMember us-gaap:FairValueInputsLevel3Member country:US 2018-12-31 0000874761 us-gaap:FixedIncomeFundsMember country:US 2017-12-31 0000874761 us-gaap:RealEstateMember us-gaap:FairValueInputsLevel1Member country:US 2017-12-31 0000874761 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedTranslationAdjustmentMember 2018-01-01 2018-12-31 0000874761 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember 2016-01-01 2016-12-31 0000874761 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember 2017-01-01 2017-12-31 0000874761 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember 2018-01-01 2018-12-31 0000874761 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember 2016-01-01 2016-12-31 0000874761 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedTranslationAdjustmentMember 2016-01-01 2016-12-31 0000874761 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedTranslationAdjustmentMember 2017-01-01 2017-12-31 0000874761 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember 2017-01-01 2017-12-31 0000874761 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2016-01-01 2016-12-31 0000874761 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember 2018-01-01 2018-12-31 0000874761 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2018-01-01 2018-12-31 0000874761 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2017-01-01 2017-12-31 0000874761 aes:DominicanRepublicMember 2017-01-01 2017-09-30 0000874761 aes:DominicanRepublicMember 2017-09-28 2017-09-28 0000874761 aes:AltoMaipoMember 2017-03-31 0000874761 aes:AltoMaipoMember 2017-01-01 2017-03-31 0000874761 2017-03-31 0000874761 aes:DominicanRepublicMember 2017-09-30 0000874761 us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember 2018-01-01 2018-12-31 0000874761 aes:ASC606ImpactMember us-gaap:AccumulatedTranslationAdjustmentMember 2018-01-01 2018-12-31 0000874761 aes:AltoMaipoMember 2017-12-31 0000874761 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember 2017-12-31 0000874761 us-gaap:AccumulatedTranslationAdjustmentMember 2017-01-01 2017-12-31 0000874761 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember 2018-01-01 2018-12-31 0000874761 aes:ASC606ImpactMember us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember 2018-01-01 2018-12-31 0000874761 us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember 2017-01-01 2017-12-31 0000874761 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember 2017-01-01 2017-12-31 0000874761 us-gaap:AccumulatedTranslationAdjustmentMember 2018-01-01 2018-12-31 0000874761 2018-12-07 2018-12-07 0000874761 2010-07-01 2018-12-31 0000874761 2018-10-01 2018-12-31 0000874761 2018-01-01 2018-03-31 0000874761 2018-07-01 2018-09-30 0000874761 2018-04-01 2018-06-30 0000874761 country:PR 2017-12-31 0000874761 country:PR 2018-12-31 0000874761 country:PR 2016-01-01 2016-12-31 0000874761 country:PR 2017-01-01 2017-12-31 0000874761 country:PR 2018-01-01 2018-12-31 0000874761 us-gaap:OperatingSegmentsMember aes:EURASIAMember 2017-01-01 2017-12-31 0000874761 us-gaap:OperatingSegmentsMember aes:MCACMember 2016-01-01 2016-12-31 0000874761 us-gaap:OperatingSegmentsMember aes:MCACMember 2017-01-01 2017-12-31 0000874761 us-gaap:OperatingSegmentsMember aes:MCACMember 2018-01-01 2018-12-31 0000874761 us-gaap:CorporateNonSegmentMember aes:CorporateOtherAndOtherEliminationsMember 2018-01-01 2018-12-31 0000874761 us-gaap:OperatingSegmentsMember aes:EURASIAMember 2016-01-01 2016-12-31 0000874761 us-gaap:OperatingSegmentsMember aes:EURASIAMember 2018-01-01 2018-12-31 0000874761 us-gaap:OperatingSegmentsMember aes:USandUtilitiesDomain 2017-01-01 2017-12-31 0000874761 us-gaap:OperatingSegmentsMember srt:SouthAmericaMember 2018-01-01 2018-12-31 0000874761 us-gaap:OperatingSegmentsMember srt:SouthAmericaMember 2016-01-01 2016-12-31 0000874761 us-gaap:OperatingSegmentsMember aes:USandUtilitiesDomain 2018-01-01 2018-12-31 0000874761 us-gaap:CorporateNonSegmentMember aes:CorporateOtherAndOtherEliminationsMember 2017-01-01 2017-12-31 0000874761 us-gaap:OperatingSegmentsMember aes:USandUtilitiesDomain 2016-01-01 2016-12-31 0000874761 us-gaap:OperatingSegmentsMember srt:SouthAmericaMember 2017-01-01 2017-12-31 0000874761 us-gaap:CorporateNonSegmentMember aes:CorporateOtherAndOtherEliminationsMember 2016-01-01 2016-12-31 0000874761 aes:VietnamMember 2018-01-01 2018-12-31 0000874761 country:DO 2017-12-31 0000874761 country:JO 2016-01-01 2016-12-31 0000874761 country:US 2018-12-31 0000874761 country:PH 2018-12-31 0000874761 country:SV 2016-01-01 2016-12-31 0000874761 country:BR 2016-01-01 2016-12-31 0000874761 country:KZ 2016-01-01 2016-12-31 0000874761 aes:OtherNonUsMember 2017-12-31 0000874761 aes:OtherNonUsMember 2018-01-01 2018-12-31 0000874761 country:GB 2016-01-01 2016-12-31 0000874761 country:JO 2017-01-01 2017-12-31 0000874761 country:PH 2017-12-31 0000874761 country:PH 2018-01-01 2018-12-31 0000874761 country:CO 2018-12-31 0000874761 country:MX 2018-01-01 2018-12-31 0000874761 aes:TotalNonUsMember 2017-01-01 2017-12-31 0000874761 country:CO 2017-01-01 2017-12-31 0000874761 country:BG 2017-01-01 2017-12-31 0000874761 country:MX 2017-01-01 2017-12-31 0000874761 country:JO 2018-12-31 0000874761 aes:VietnamMember 2016-01-01 2016-12-31 0000874761 aes:VietnamMember 2017-01-01 2017-12-31 0000874761 country:BR 2018-01-01 2018-12-31 0000874761 country:BR 2017-01-01 2017-12-31 0000874761 country:MX 2017-12-31 0000874761 country:CL 2016-01-01 2016-12-31 0000874761 country:KZ 2017-01-01 2017-12-31 0000874761 country:JO 2018-01-01 2018-12-31 0000874761 country:DO 2018-12-31 0000874761 country:GB 2018-01-01 2018-12-31 0000874761 country:KZ 2017-12-31 0000874761 country:CL 2017-01-01 2017-12-31 0000874761 country:US 2018-01-01 2018-12-31 0000874761 country:US 2016-01-01 2016-12-31 0000874761 country:GB 2018-12-31 0000874761 country:KZ 2018-12-31 0000874761 aes:VietnamMember 2017-12-31 0000874761 aes:TotalNonUsMember 2018-01-01 2018-12-31 0000874761 aes:TotalNonUsMember 2018-12-31 0000874761 aes:OtherNonUsMember 2017-01-01 2017-12-31 0000874761 country:CO 2016-01-01 2016-12-31 0000874761 country:GB 2017-01-01 2017-12-31 0000874761 country:SV 2018-01-01 2018-12-31 0000874761 country:PH 2016-01-01 2016-12-31 0000874761 country:PH 2017-01-01 2017-12-31 0000874761 country:US 2017-12-31 0000874761 country:BG 2018-12-31 0000874761 country:BG 2016-01-01 2016-12-31 0000874761 aes:TotalNonUsMember 2016-01-01 2016-12-31 0000874761 country:PA 2016-01-01 2016-12-31 0000874761 country:CO 2018-01-01 2018-12-31 0000874761 country:BG 2017-12-31 0000874761 country:AR 2018-01-01 2018-12-31 0000874761 country:CL 2018-01-01 2018-12-31 0000874761 country:GB 2017-12-31 0000874761 country:DO 2016-01-01 2016-12-31 0000874761 country:CL 2018-12-31 0000874761 country:SV 2018-12-31 0000874761 country:MX 2018-12-31 0000874761 aes:OtherNonUsMember 2018-12-31 0000874761 aes:OtherNonUsMember 2016-01-01 2016-12-31 0000874761 country:KZ 2018-01-01 2018-12-31 0000874761 country:SV 2017-12-31 0000874761 country:CO 2017-12-31 0000874761 country:MX 2016-01-01 2016-12-31 0000874761 aes:VietnamMember 2018-12-31 0000874761 country:AR 2016-01-01 2016-12-31 0000874761 country:AR 2017-01-01 2017-12-31 0000874761 aes:TotalNonUsMember 2017-12-31 0000874761 country:PA 2017-01-01 2017-12-31 0000874761 country:DO 2017-01-01 2017-12-31 0000874761 country:PA 2018-01-01 2018-12-31 0000874761 country:DO 2018-01-01 2018-12-31 0000874761 country:US 2017-01-01 2017-12-31 0000874761 country:SV 2017-01-01 2017-12-31 0000874761 country:JO 2017-12-31 0000874761 country:CL 2017-12-31 0000874761 country:BG 2018-01-01 2018-12-31 0000874761 us-gaap:OperatingSegmentsMember 2017-01-01 2017-12-31 0000874761 us-gaap:OperatingSegmentsMember 2018-01-01 2018-12-31 0000874761 us-gaap:OperatingSegmentsMember 2016-01-01 2016-12-31 0000874761 us-gaap:IntersegmentEliminationMember 2017-01-01 2017-12-31 0000874761 us-gaap:IntersegmentEliminationMember 2018-01-01 2018-12-31 0000874761 us-gaap:IntersegmentEliminationMember 2016-01-01 2016-12-31 0000874761 us-gaap:CorporateNonSegmentMember aes:CorporateOtherAndOtherEliminationsMember 2018-12-31 0000874761 us-gaap:OperatingSegmentsMember aes:MCACMember 2016-12-31 0000874761 us-gaap:CorporateNonSegmentMember aes:CorporateOtherAndOtherEliminationsMember 2017-12-31 0000874761 us-gaap:OperatingSegmentsMember aes:USandUtilitiesDomain 2018-12-31 0000874761 us-gaap:OperatingSegmentsMember aes:EURASIAMember 2016-12-31 0000874761 us-gaap:OperatingSegmentsMember srt:SouthAmericaMember 2018-12-31 0000874761 us-gaap:OperatingSegmentsMember srt:SouthAmericaMember 2016-12-31 0000874761 us-gaap:OperatingSegmentsMember srt:SouthAmericaMember 2017-12-31 0000874761 us-gaap:CorporateNonSegmentMember aes:CorporateOtherAndOtherEliminationsMember 2016-12-31 0000874761 us-gaap:OperatingSegmentsMember aes:USandUtilitiesDomain 2017-12-31 0000874761 us-gaap:OperatingSegmentsMember aes:USandUtilitiesDomain 2016-12-31 0000874761 us-gaap:MaterialReconcilingItemsMember us-gaap:DiscontinuedOperationsHeldForSaleOrDisposedOfBySaleMember 2018-01-01 2018-12-31 0000874761 us-gaap:MaterialReconcilingItemsMember us-gaap:DiscontinuedOperationsHeldForSaleOrDisposedOfBySaleMember 2016-12-31 0000874761 us-gaap:MaterialReconcilingItemsMember us-gaap:DiscontinuedOperationsHeldForSaleOrDisposedOfBySaleMember 2018-12-31 0000874761 us-gaap:MaterialReconcilingItemsMember us-gaap:DiscontinuedOperationsHeldForSaleOrDisposedOfBySaleMember 2016-01-01 2016-12-31 0000874761 us-gaap:MaterialReconcilingItemsMember us-gaap:DiscontinuedOperationsHeldForSaleOrDisposedOfBySaleMember 2017-12-31 0000874761 us-gaap:MaterialReconcilingItemsMember us-gaap:DiscontinuedOperationsHeldForSaleOrDisposedOfBySaleMember 2017-01-01 2017-12-31 0000874761 us-gaap:RestrictedStockUnitsRSUMember 2017-12-31 0000874761 us-gaap:RestrictedStockUnitsRSUMember 2018-01-01 2018-12-31 0000874761 us-gaap:RestrictedStockUnitsRSUMember 2018-12-31 0000874761 us-gaap:RestrictedStockUnitsRSUMember 2016-01-01 2016-12-31 0000874761 us-gaap:RestrictedStockUnitsRSUMember 2016-12-31 0000874761 us-gaap:RestrictedStockUnitsRSUMember 2017-01-01 2017-12-31 0000874761 us-gaap:EmployeeStockOptionMember 2016-01-01 2016-12-31 0000874761 srt:WeightedAverageMember us-gaap:RestrictedStockUnitsRSUMember 2017-12-31 0000874761 srt:WeightedAverageMember us-gaap:RestrictedStockUnitsRSUMember 2016-12-31 0000874761 srt:MinimumMember aes:PerformanceStockUnitsMember 2018-12-31 0000874761 srt:MaximumMember aes:PerformanceStockUnitsMember 2018-12-31 0000874761 us-gaap:EmployeeStockOptionMember 2016-12-31 0000874761 srt:WeightedAverageMember us-gaap:RestrictedStockUnitsRSUMember 2018-12-31 0000874761 aes:PerformanceCashUnitsMember 2018-01-01 2018-12-31 0000874761 aes:IplSubsidiaryMember 2018-12-31 0000874761 aes:IplSubsidiaryMember srt:MinimumMember 2018-12-31 0000874761 aes:IPALCOEnterprisesInc.Member 2016-03-01 2016-03-31 0000874761 aes:Acquireadditionalsharesthrough2016Member 2015-02-01 2015-02-28 0000874761 aes:IplSubsidiaryMember srt:MaximumMember 2018-12-31 0000874761 aes:ColonDomain 2017-01-01 2017-12-31 0000874761 aes:IPALCOEnterprisesInc.Member us-gaap:RetainedEarningsMember 2016-01-01 2016-03-31 0000874761 aes:IPALCOEnterprisesInc.Member 2016-06-01 2016-06-30 0000874761 aes:Acquireadditionalsharesthrough2016Member aes:IPALCOEnterprisesInc.Member 2015-02-01 2015-02-28 0000874761 aes:ColonDomain 2018-01-01 2018-12-31 0000874761 aes:IPALCOEnterprisesInc.Member 2016-03-31 0000874761 us-gaap:RedeemablePreferredStockMember 2018-12-31 0000874761 us-gaap:OtherComprehensiveIncomeMember 2018-01-01 2018-12-31 0000874761 us-gaap:OtherComprehensiveIncomeMember 2017-01-01 2017-12-31 0000874761 us-gaap:RedeemablePreferredStockMember 2016-09-30 0000874761 aes:IplSubsidiaryMember 2017-12-31 0000874761 aes:ColonDomain 2018-12-31 0000874761 aes:ColonDomain 2017-12-31 0000874761 aes:IPALCOEnterprisesInc.Member 2018-12-31 0000874761 aes:IPALCOEnterprisesInc.Member 2017-12-31 0000874761 aes:IplSubsidiaryMember srt:MaximumMember 2017-12-31 0000874761 aes:IplSubsidiaryMember srt:MinimumMember 2017-12-31 0000874761 aes:RegulatedRevenueMember srt:SouthAmericaMember 2018-01-01 2018-12-31 0000874761 aes:NonregulatedrevenueMember aes:CorporateOtherAndOtherEliminationsMember 2018-01-01 2018-12-31 0000874761 aes:RegulatedRevenueMember aes:EURASIAMember 2018-01-01 2018-12-31 0000874761 aes:NonregulatedrevenueMember srt:SouthAmericaMember 2018-01-01 2018-12-31 0000874761 aes:RegulatedRevenueMember aes:MCACMember 2018-01-01 2018-12-31 0000874761 aes:NonregulatedrevenueMember aes:MCACMember 2018-01-01 2018-12-31 0000874761 aes:NonregulatedrevenueMember aes:USandUtilitiesDomain 2018-01-01 2018-12-31 0000874761 aes:RegulatedRevenueMember aes:USandUtilitiesDomain 2018-01-01 2018-12-31 0000874761 aes:NonregulatedrevenueMember aes:EURASIAMember 2018-01-01 2018-12-31 0000874761 aes:RegulatedRevenueMember aes:CorporateOtherAndOtherEliminationsMember 2018-01-01 2018-12-31 0000874761 aes:EURASIAMember 2018-01-01 2018-12-31 0000874761 aes:USandUtilitiesDomain 2018-01-01 2018-12-31 0000874761 aes:RegulatedRevenueMember 2018-01-01 2018-12-31 0000874761 aes:CorporateOtherAndOtherEliminationsMember 2018-01-01 2018-12-31 0000874761 srt:SouthAmericaMember 2018-01-01 2018-12-31 0000874761 aes:NonregulatedrevenueMember 2018-01-01 2018-12-31 0000874761 aes:MCACMember 2018-01-01 2018-12-31 0000874761 us-gaap:OtherExpenseMember 2018-01-01 2018-12-31 0000874761 us-gaap:OtherIncomeMember 2017-01-01 2017-12-31 0000874761 us-gaap:OtherIncomeMember 2016-01-01 2016-12-31 0000874761 us-gaap:OtherIncomeMember 2018-01-01 2018-12-31 0000874761 aes:NaPuaMakaniPowerPartnersMember 2018-01-01 2018-12-31 0000874761 aes:OtherImpairmentMember 2017-01-01 2017-12-31 0000874761 aes:DplSubsidiaryMember 2017-01-01 2017-12-31 0000874761 aes:NejapaMember 2018-01-01 2018-12-31 0000874761 aes:BuffaloGapMember 2016-01-01 2016-12-31 0000874761 aes:LaurelMountainMember 2017-01-01 2017-12-31 0000874761 aes:BuffalogapIIMemberMember 2018-01-01 2018-12-31 0000874761 aes:BuffalogapIIMemberMember 2016-01-01 2016-12-31 0000874761 aes:BuffalogapIIMemberMember 2017-01-01 2017-12-31 0000874761 aes:KazakhstanMember 2017-01-01 2017-12-31 0000874761 aes:OtherImpairmentMember 2018-01-01 2018-12-31 0000874761 aes:KazakhstanHydroMember 2016-01-01 2016-12-31 0000874761 aes:DplSubsidiaryMember 2016-01-01 2016-12-31 0000874761 aes:KazakhstanHydroMember 2018-01-01 2018-12-31 0000874761 aes:ShadyPointMember 2018-01-01 2018-12-31 0000874761 aes:NejapaMember 2017-01-01 2017-12-31 0000874761 aes:LaurelMountainMember 2018-01-01 2018-12-31 0000874761 aes:BuffaloGapMember 2018-01-01 2018-12-31 0000874761 aes:KilrootMember 2018-01-01 2018-12-31 0000874761 aes:BuffaloGapMember 2017-01-01 2017-12-31 0000874761 aes:NejapaMember 2016-01-01 2016-12-31 0000874761 aes:KilrootMember 2017-01-01 2017-12-31 0000874761 aes:ShadyPointMember 2017-01-01 2017-12-31 0000874761 aes:KilrootMember 2016-01-01 2016-12-31 0000874761 aes:KazakhstanHydroMember 2017-01-01 2017-12-31 0000874761 aes:KazakhstanMember 2016-01-01 2016-12-31 0000874761 aes:OtherImpairmentMember 2016-01-01 2016-12-31 0000874761 aes:KazakhstanMember 2018-01-01 2018-12-31 0000874761 aes:ShadyPointMember 2016-01-01 2016-12-31 0000874761 aes:LaurelMountainMember 2016-01-01 2016-12-31 0000874761 aes:NejapaMember 2018-12-31 0000874761 aes:KillenStationMember aes:LongLivedAssetsHeldAndUsedMember 2017-12-31 0000874761 aes:KillenStationMember us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperationsMember 2018-12-31 0000874761 srt:ParentCompanyMember aes:LongLivedAssetsHeldAndUsedMember 2016-01-01 2016-03-31 0000874761 aes:KazakhstanHydroMember us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperationsMember 2017-06-30 0000874761 aes:KazakhstanMember us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperationsMember 2018-01-01 2018-12-31 0000874761 aes:KazakhstanHydroMember us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperationsMember 2018-04-01 2018-06-30 0000874761 aes:ConesvilleDPLMember aes:LongLivedAssetsHeldAndUsedMember 2017-12-31 0000874761 aes:DplSubsidiaryMember us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperationsMember 2018-01-01 2018-12-31 0000874761 aes:DPLPeakingGenerationDomain us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperationsMember 2018-12-31 0000874761 aes:DplSubsidiaryMember aes:LongLivedAssetsHeldAndUsedMember 2016-01-01 2016-06-30 0000874761 aes:LaurelMountainMember aes:LongLivedAssetsHeldAndUsedMember 2018-12-31 0000874761 srt:ParentCompanyMember aes:LongLivedAssetsHeldAndUsedMember 2016-01-01 2016-09-30 0000874761 aes:BuffalogapIIMemberMember aes:LongLivedAssetsHeldAndUsedMember 2017-12-31 0000874761 aes:BuffaloGapMember aes:LongLivedAssetsHeldAndUsedMember 2017-01-01 2017-12-31 0000874761 aes:LaurelMountainMember aes:LongLivedAssetsHeldAndUsedMember 2018-01-01 2018-12-31 0000874761 aes:BuffalogapIIMemberMember aes:LongLivedAssetsHeldAndUsedMember 2017-01-01 2017-12-31 0000874761 aes:BuffaloGapMember aes:LongLivedAssetsHeldAndUsedMember 2017-12-31 0000874761 aes:KilrootMember aes:LongLivedAssetsHeldAndUsedMember 2018-12-31 0000874761 aes:KazakhstanMember us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperationsMember 2017-03-31 0000874761 aes:KilrootMember aes:LongLivedAssetsHeldAndUsedMember 2018-01-01 2018-12-31 0000874761 aes:DPLPeakingGenerationDomain aes:LongLivedAssetsHeldAndUsedMember 2016-06-30 0000874761 aes:ZimmerStationMember aes:LongLivedAssetsHeldAndUsedMember 2017-12-31 0000874761 aes:StuartStationMember us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperationsMember 2018-12-31 0000874761 aes:ShadyPointMember 2018-12-31 0000874761 aes:DPLPeakingGenerationDomain us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperationsMember 2018-01-01 2018-12-31 0000874761 aes:StuartStationMember aes:LongLivedAssetsHeldAndUsedMember 2017-12-31 0000874761 aes:MiamiFortDomain aes:LongLivedAssetsHeldAndUsedMember 2017-12-31 0000874761 aes:KillenStationMember aes:LongLivedAssetsHeldAndUsedMember 2016-06-30 0000874761 aes:KazakhstanHydroMember us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperationsMember 2018-01-01 2018-12-31 0000874761 aes:DPLPeakingGenerationDomain aes:LongLivedAssetsHeldAndUsedMember 2017-12-31 0000874761 country:AR 2018-01-01 2018-12-31 0000874761 country:US 2018-12-31 0000874761 country:US aes:TaxReformDomain 2018-01-01 2018-12-31 0000874761 country:US 2018-01-01 2018-12-31 0000874761 aes:ChileantaxreformMemberMember 2018-01-01 2018-12-31 0000874761 aes:ChileantaxreformMemberMember 2017-01-01 2017-03-31 0000874761 us-gaap:NonUsMember 2017-01-01 2017-12-31 0000874761 country:AR aes:FY20182019Member 2018-01-01 2018-12-31 0000874761 country:US us-gaap:ChangeInAccountingEstimateTypeDomain 2018-10-01 2018-12-31 0000874761 us-gaap:InternalRevenueServiceIRSMember 2018-12-31 0000874761 aes:Year2017to2024Member aes:ForeignJurisdictionsMember 2018-12-31 0000874761 country:US us-gaap:NonUsMember aes:TaxReformDomain 2018-01-01 2018-12-31 0000874761 aes:ChileantaxreformMemberMember 2017-01-01 2017-12-31 0000874761 aes:FederalAlternativeMinimumTaxMember 2018-12-31 0000874761 country:VN 2017-01-01 2017-12-31 0000874761 country:US 2017-01-01 2017-12-31 0000874761 country:AR aes:FY2020andbeyondMember 2018-01-01 2018-12-31 0000874761 country:VN 2016-01-01 2016-12-31 0000874761 us-gaap:NonUsMember 2016-01-01 2016-12-31 0000874761 us-gaap:NonUsMember 2018-01-01 2018-12-31 0000874761 us-gaap:ForeignCountryMember 2018-12-31 0000874761 country:VN 2018-01-01 2018-12-31 0000874761 us-gaap:GeneralBusinessMember 2018-12-31 0000874761 aes:ForeignJurisdictionsMember 2018-12-31 0000874761 us-gaap:StateAndLocalJurisdictionMember 2018-12-31 0000874761 aes:Year2023to2028Member aes:ForeignJurisdictionsMember 2018-12-31 0000874761 aes:EletropauloSubsidiaryMember 2018-01-01 2018-06-30 0000874761 aes:SulSubsidiaryMember 2016-01-01 2016-12-31 0000874761 aes:SulSubsidiaryMember 2016-10-31 2016-10-31 0000874761 aes:EletropauloSubsidiaryMember 2018-04-01 2018-06-30 0000874761 aes:EletropauloSubsidiaryMember 2017-01-01 2017-12-31 0000874761 aes:EletropauloSubsidiaryMember 2016-01-01 2016-12-31 0000874761 aes:SulSubsidiaryMember 2016-10-01 2016-12-31 0000874761 aes:SulSubsidiaryMember 2016-06-01 2016-06-30 0000874761 aes:EletropauloSubsidiaryMember 2017-12-01 2017-12-31 0000874761 aes:SulSubsidiaryMember 2016-06-30 0000874761 aes:EletropauloSubsidiaryMember 2017-10-01 2017-12-31 0000874761 aes:BorsodMember 2018-10-01 2018-12-31 0000874761 aes:SulSubsidiaryMember 2016-10-31 2016-10-31 0000874761 aes:SulSubsidiaryMember 2016-06-01 2016-06-30 0000874761 aes:SulSubsidiaryMember us-gaap:DiscontinuedOperationsHeldforsaleMember 2016-06-01 2016-06-30 0000874761 aes:EletropauloSubsidiaryMember 2017-12-31 0000874761 us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperationsMember 2017-12-31 0000874761 aes:EletropauloSubsidiaryMember us-gaap:SegmentDiscontinuedOperationsMember 2017-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:CompaniaTransmisoradelNorteGrandeMember 2018-01-01 2018-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:DPLPeakingGenerationDomain 2018-01-01 2018-03-31 0000874761 aes:MasinlocSubsidiaryMember 2014-06-24 2014-06-25 0000874761 us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperationsMember aes:ShadyPointMember 2018-01-01 2018-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:ZimmerandMiamiFortMember 2017-10-01 2017-12-31 0000874761 aes:JordanMember 2016-02-18 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:BeckjordFacilityMember 2018-01-01 2018-03-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:KelanitissaMember 2016-01-27 2016-01-27 0000874761 aes:MasinlocSubsidiaryMember 2018-03-20 0000874761 aes:MasinlocSubsidiaryMember 2014-06-25 0000874761 us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperationsMember aes:RedondoBeachMember 2018-12-31 0000874761 aes:IPP4Member 2017-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:DplerMember 2016-01-01 2016-01-01 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:KazakhstanMember 2017-04-07 2017-04-07 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:ElectricaSantiagoGenerESSAMember 2018-01-01 2018-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:MasinlocSubsidiaryMember 2018-01-01 2018-12-31 0000874761 us-gaap:DisposalGroupNotDiscontinuedOperationsMember aes:AdvancionEnergyStorageMember 2018-01-01 2018-03-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:DPLPeakingGenerationDomain 2018-01-01 2018-12-31 0000874761 aes:MasinlocSubsidiaryMember 2017-12-31 0000874761 aes:JordanMember 2016-02-18 2016-02-18 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:UKWindProjectsMember 2016-04-01 2016-06-30 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:KazakhstanHydroMember 2017-01-01 2017-12-31 0000874761 us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperationsMember aes:ShadyPointMember 2018-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:DPLPeakingGenerationDomain 2017-01-01 2017-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:DplSubsidiaryMember 2016-01-01 2016-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:MasinlocSubsidiaryMember 2017-01-01 2017-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:KazakhstanMember 2016-01-01 2016-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:ZimmerandMiamiFortMember 2016-01-01 2016-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:DplSubsidiaryMember 2017-01-01 2017-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:OtherSubsidiariesMember 2016-01-01 2016-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:OtherSubsidiariesMember 2017-01-01 2017-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember 2016-01-01 2016-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember 2017-01-01 2017-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:KazakhstanHydroMember 2016-01-01 2016-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:MasinlocSubsidiaryMember 2016-01-01 2016-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember 2018-01-01 2018-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:KazakhstanMember 2018-01-01 2018-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:KazakhstanHydroMember 2018-01-01 2018-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:OtherSubsidiariesMember 2018-01-01 2018-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:DPLPeakingGenerationDomain 2016-01-01 2016-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:KazakhstanMember 2017-01-01 2017-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:ZimmerandMiamiFortMember 2017-01-01 2017-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:DplSubsidiaryMember 2018-01-01 2018-12-31 0000874761 us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember aes:ZimmerandMiamiFortMember 2018-01-01 2018-12-31 0000874761 aes:NaPuaMakaniPowerPartnersMember 2018-10-01 2018-12-31 0000874761 aes:NaPuaMakaniPowerPartnersMember 2017-04-01 2017-06-30 0000874761 aes:AltoSertaoIIMember 2017-07-01 2017-09-30 0000874761 aes:BauruSolarComplexMember 2018-01-01 2018-09-30 0000874761 aes:DistributedEnergyMember 2018-12-31 0000874761 aes:DistributedEnergyMember 2018-10-01 2018-12-31 0000874761 aes:AltoSertaoIIMember 2017-09-30 0000874761 aes:AltoSertaoIIMember 2018-03-31 0000874761 aes:NaPuaMakaniPowerPartnersMember 2018-11-01 0000874761 aes:AltoSertaoIIMember 2018-07-01 2018-09-30 0000874761 aes:DistributedEnergyMember 2015-09-15 2016-09-16 0000874761 us-gaap:ConvertibleDebtSecuritiesMember 2016-01-01 2016-12-31 0000874761 srt:WeightedAverageMember us-gaap:RestrictedStockUnitsRSUMember 2017-01-01 2017-12-31 0000874761 us-gaap:RestrictedStockUnitsRSUMember 2017-01-01 2017-12-31 0000874761 us-gaap:RestrictedStockUnitsRSUMember 2016-01-01 2016-12-31 0000874761 srt:WeightedAverageMember us-gaap:RestrictedStockUnitsRSUMember 2016-01-01 2016-12-31 0000874761 us-gaap:CashAndCashEquivalentsMember 2018-12-31 0000874761 srt:AffiliatedEntityMember 2017-01-01 2017-12-31 0000874761 us-gaap:ElectricityGenerationMember srt:AffiliatedEntityMember 2016-01-01 2016-12-31 0000874761 srt:AffiliatedEntityMember 2016-01-01 2016-12-31 0000874761 srt:AffiliatedEntityMember 2018-01-01 2018-12-31 0000874761 us-gaap:ElectricityGenerationMember srt:AffiliatedEntityMember 2017-01-01 2017-12-31 0000874761 us-gaap:ElectricityGenerationMember srt:AffiliatedEntityMember 2018-01-01 2018-12-31 0000874761 srt:AffiliatedEntityMember 2018-12-31 0000874761 srt:AffiliatedEntityMember 2017-12-31 0000874761 2017-10-01 2017-12-31 0000874761 2017-07-01 2017-09-30 0000874761 2017-01-01 2017-03-31 0000874761 2017-04-01 2017-06-30 0000874761 country:US us-gaap:ChangeInAccountingEstimateTypeDomain 2017-10-01 2017-12-31 0000874761 country:US us-gaap:ChangeInAccountingEstimateTypeDomain 2018-07-01 2018-09-30 0000874761 country:US 2017-10-01 2017-12-31 0000874761 srt:ParentCompanyMember 2018-12-31 0000874761 srt:ParentCompanyMember 2017-12-31 0000874761 srt:ParentCompanyMember 2017-01-01 2017-12-31 0000874761 srt:ParentCompanyMember 2016-01-01 2016-12-31 0000874761 srt:ParentCompanyMember 2016-12-31 0000874761 srt:ParentCompanyMember 2015-12-31 0000874761 srt:ParentCompanyMember aes:RecourseDebtExcludingJuniorSubordinatedDebtMember 2018-12-31 0000874761 srt:ParentCompanyMember aes:RecourseDebtExcludingJuniorSubordinatedDebtMember 2017-12-31 0000874761 aes:SeniorUnsecuredNote7375Due2021Member srt:ParentCompanyMember aes:RecourseDebtMember 2018-12-31 0000874761 aes:SeniorUnsecuredNote800Due2017Member srt:ParentCompanyMember aes:RecourseDebtMember 2018-12-31 0000874761 aes:SeniorUnsecuredNote4875Due2023Member srt:ParentCompanyMember aes:RecourseDebtMember 2018-12-31 0000874761 aes:SeniorUnsecuredNoteLIBORplus3due2019Member srt:ParentCompanyMember aes:RecourseDebtMember us-gaap:LondonInterbankOfferedRateLIBORMember 2017-01-01 2017-12-31 0000874761 aes:SeniorUnsecuredNoteLIBORplus3due2019Member srt:ParentCompanyMember aes:RecourseDebtMember us-gaap:LondonInterbankOfferedRateLIBORMember 2018-01-01 2018-12-31 0000874761 srt:ParentCompanyMember us-gaap:GuaranteesMember 2018-12-31 iso4217:USD iso4217:USD xbrli:shares xbrli:shares aes:agreement xbrli:pure aes:security aes:plan utreg:Rate aes:business aes:segment aes:series aes:quarter
 
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
____________________________________
FORM 10-K
_____________________________________ 
x
ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the Fiscal Year Ended December 31, 2018
-OR-
¨
TRANSITION REPORT FILED PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
 
COMMISSION FILE NUMBER 1-12291
aeslogominia01a04.jpg
THE AES CORPORATION
(Exact name of registrant as specified in its charter)
Delaware
 
54 1163725
(State or other jurisdiction of incorporation or organization)
 
(I.R.S. Employer Identification No.)
4300 Wilson Boulevard Arlington, Virginia
 
22203
(Address of principal executive offices)
 
(Zip Code)
Registrant's telephone number, including area code: (703) 522-1315
Securities registered pursuant to Section 12(b) of the Act:
Title of Each Class
 
Name of Each Exchange on Which Registered
Common Stock, par value $0.01 per share
 
New York Stock Exchange
Securities registered pursuant to Section 12(g) of the Act: None
Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes  x    No  o
Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or Section 15 (d) of the Act. Yes  x    No  o
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.   Yes  x    No  o
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).   Yes  x    No  o
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is not contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  x
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated filer x
 
Accelerated filer ¨
 
Smaller reporting company ¨
 
Emerging growth company ¨
 
Non-accelerated filer ¨
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨
Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  Yes  o     No  x
The aggregate market value of the voting and non-voting common equity held by non-affiliates on June 29, 2018, the last business day of the Registrant's most recently completed second fiscal quarter (based on the adjusted closing sale price of $13.05 of the Registrant's Common Stock, as reported by the New York Stock Exchange on such date) was approximately $8.63 billion.
The number of shares outstanding of Registrant's Common Stock, par value $0.01 per share, on February 21, 2019 was 662,358,244.
DOCUMENTS INCORPORATED BY REFERENCE
Portions of Registrant's Proxy Statement for its 2019 annual meeting of stockholders are incorporated by reference in Parts II and III
 




THE AES CORPORATION FISCAL YEAR 2018 FORM 10-K
TABLE OF CONTENTS




GLOSSARY OF TERMS
The following terms and abbreviations appear in the text of this report and have the definitions indicated below:
Adjusted EPS
Adjusted Earnings Per Share, a non-GAAP measure
Adjusted PTC
Adjusted Pre-tax Contribution, a non-GAAP measure of operating performance
AES
The Parent Company and its subsidiaries and affiliates
AOCI
Accumulated Other Comprehensive Income
AOCL
Accumulated Other Comprehensive Loss
ASC
Accounting Standards Codification
ASEP
National Authority of Public Services
BACT
Best Available Control Technology
BART
Best Available Retrofit Technology
BOT
Build, Operate and Transfer
BTA
Best Technology Available
CAA
United States Clean Air Act
CAMMESA
Wholesale Electric Market Administrator in Argentina
CCGT
Combined Cycle Gas Turbine
CCR
Coal Combustion Residuals, which includes bottom ash, fly ash and air pollution control wastes generated at coal-fired generation plant sites.
CDPQ
La Caisse de dépôt et placement du Quebéc
CEN
Coordinador Electrico Nacional
CEO
Chief Executive Officer
CFE
Federal Electricity Commission
CHP
Combined Heat and Power
COFINS
Contribuição para o Financiamento da Seguridade Social
CO2
Carbon Dioxide
COSO
Committee of Sponsoring Organizations of the Treadway Commission
CP
Capacity Performance
CPI
United States Consumer Price Index
CPP
Clean Power Plan
CRES
Competitive Retail Electric Service
CSAPR
Cross-State Air Pollution Rule
CTNG
Compañia Transmisora del Norte Grande
CWA
U.S. Clean Water Act
DG Comp
Directorate-General for Competition of the European Commission
DP&L
The Dayton Power & Light Company
DPL
DPL Inc.
DPLER
DPL Energy Resources, Inc.
DPP
Dominican Power Partners
EBITDA
Earnings before Interest, Taxes, Depreciation & Amortization
EPA
United States Environmental Protection Agency
EPC
Engineering, Procurement, and Construction
ERCOT
Electric Reliability Council of Texas
ESP
Electric Security Plan
EU
European Union
EURIBOR
Euro Inter Bank Offered Rate
EUSGU
Electric Utility Steam Generating Unit
EVN
Electricity of Vietnam
FASB
Financial Accounting Standards Board
FERC
Federal Energy Regulatory Commission
FONINVEMEM
Fund for the Investment Needed to Increase the Supply of Electricity in the Wholesale Market
FPA
Federal Power Act
FX
Foreign Exchange
GAAP
Generally Accepted Accounting Principles in the United States
GDPR
General Data Protection Regulation
GHG
Greenhouse Gas
GILTI
Global Intangible Low Taxed Income
GRIDCO
Grid Corporation of Odisha Ltd.
GWh
Gigawatt Hours
HLBV
Hypothetical Liquidation Book Value
IDEM
Indiana Department of Environmental Management
ITC
Imputed Tax Credit
IPALCO
IPALCO Enterprises, Inc.

1



IPL
Indiana, Indianapolis Power & Light Company
IPP
Independent Power Producers
I-SEM
Integrated Single Electricity Market
ISO
Independent System Operator
IURC
Indiana Utility Regulatory Commission
LIBOR
London Inter Bank Offered Rate
LNG
Liquefied Natural Gas
MATS
Mercury and Air Toxics Standards
MISO
Midcontinent Independent System Operator, Inc.
MRE
Energy Reallocation Mechanism
MW
Megawatts
MWh
Megawatt Hours
NAAQS
National Ambient Air Quality Standards
NCI
Noncontrolling Interest
NCRE
Non-Conventional Renewable Energy
NEK
Natsionalna Elektricheska Kompania (state-owned electricity public supplier in Bulgaria)
NEPCO
National Electric Power Company
NERC
North American Electric Reliability Corporation
NM
Not Meaningful
NOV
Notice of Violation
NOX
Nitrogen Dioxide
NPDES
National Pollutant Discharge Elimination System
NSPS
New Source Performance Standards
O&M
Operations and Maintenance
OERC
Orissa Electricity Regulatory Commission
ONS
National System Operator
OPGC
Odisha Power Generation Corporation, Ltd.
OTC Policy
Statewide Water Quality Control Policy on the Use of Coastal and Estuarine Waters for Power Plant Cooling
Parent Company
The AES Corporation
PCU
Performance Cash Units
Pet Coke
Petroleum Coke
PIS
Partially Integrated System
PJM
PJM Interconnection, LLC
PM
Particulate Matter
PPA
Power Purchase Agreement
PREPA
Puerto Rico Electric Power Authority
PSD
Prevention of Significant Deterioration
PSU
Performance Stock Unit
PUCO
The Public Utilities Commission of Ohio
PURPA
Public Utility Regulatory Policies Act
QF
Qualifying Facility
RMRR
Routine Maintenance, Repair and Replacement
RSU
Restricted Stock Unit
RTO
Regional Transmission Organization
SADI
Argentine Interconnected System
SBU
Strategic Business Unit
SCE
Southern California Edison
SEC
United States Securities and Exchange Commission
SEM
Single Electricity Market
SEN
Sistema Electrico Nacional
SIC
Central Interconnected Electricity System
SIN
National Interconnected System
SING
Northern Interconnected Electricity System
SIP
State Implementation Plan
SNE
National Secretary of Energy
SO2
Sulfur Dioxide
SSO
Standard Service Offer
SWRCB
California State Water Resources Board
TCJA
Tax Cuts and Jobs Act 
TECONS
Term Convertible Preferred Securities
U.S.
United States
UK
United Kingdom
USD
U.S. dollar

2



VAT
Value Added Tax
VIE
Variable Interest Entity
Vinacomin
Vietnam National Coal-Mineral Industries Holding Corporation Ltd.
YPF
Argentina state-owned gas company

3



PART I
In this Annual Report the terms “AES,” “the Company,” “us,” or “we” refer to The AES Corporation and all of its subsidiaries and affiliates, collectively. The terms “The AES Corporation” and “Parent Company” refer only to the parent, publicly held holding company, The AES Corporation, excluding its subsidiaries and affiliates.
FORWARD-LOOKING INFORMATION
In this filing we make statements concerning our expectations, beliefs, plans, objectives, goals, strategies, and future events or performance. Such statements are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Although we believe that these forward-looking statements and the underlying assumptions are reasonable, we cannot assure you that they will prove to be correct.
Forward-looking statements involve a number of risks and uncertainties, and there are factors that could cause actual results to differ materially from those expressed or implied in our forward-looking statements. Some of those factors (in addition to others described elsewhere in this report and in subsequent securities filings) include:
•
the economic climate, particularly the state of the economy in the areas in which we operate and the state of the economy in China, which impacts demand for electricity in many of our key markets, including the fact that the global economy faces considerable uncertainty for the foreseeable future, which further increases many of the risks discussed in this Form 10-K;
•
changes in inflation, demand for power, interest rates and foreign currency exchange rates, including our ability to hedge our interest rate and foreign currency risk;
•
changes in the price of electricity at which our generation businesses sell into the wholesale market and our utility businesses purchase to distribute to their customers, and the success of our risk management practices, such as our ability to hedge our exposure to such market price risk;
•
changes in the prices and availability of coal, gas and other fuels (including our ability to have fuel transported to our facilities) and the success of our risk management practices, such as our ability to hedge our exposure to such market price risk, and our ability to meet credit support requirements for fuel and power supply contracts;
•
changes in and access to the financial markets, particularly changes affecting the availability and cost of capital in order to refinance existing debt and finance capital expenditures, acquisitions, investments and other corporate purposes;
•
our ability to fulfill our obligations, manage liquidity and comply with covenants under our recourse and non-recourse debt, including our ability to manage our significant liquidity needs and to comply with covenants under our senior secured credit facility and other existing financing obligations;
•
our ability to receive funds from our subsidiaries by way of dividends, fees, interest, loans or otherwise;
•
changes in our or any of our subsidiaries' corporate credit ratings or the ratings of our or any of our subsidiaries' debt securities or preferred stock, and changes in the rating agencies' ratings criteria;
•
our ability to purchase and sell assets at attractive prices and on other attractive terms;
•
our ability to compete in markets where we do business;
•
our ability to operate power generation, distribution and transmission facilities, including managing availability, outages and equipment failures;
•
our ability to manage our operational and maintenance costs, the performance and reliability of our generating plants, including our ability to reduce unscheduled down times;
•
our ability to enter into long-term contracts, which limit volatility in our results of operations and cash flow, such as PPAs, fuel supply, and other agreements and to manage counterparty credit risks in these agreements;
•
variations in weather, especially mild winters and cooler summers in the areas in which we operate, the occurrence of difficult hydrological conditions for our hydropower plants, as well as hurricanes and other storms and disasters, wildfires and low levels of wind or sunlight for our wind and solar facilities;
•
the performance of our contracts by our contract counterparties, including suppliers or customers;
•
severe weather and natural disasters;
•
our ability to raise sufficient capital to fund development projects or to successfully execute our development projects;
•
the success of our initiatives in other renewable energy projects and energy storage projects;

4



•
the availability of government incentives or policies that support the development of renewable energy generation projects;
•
our ability to keep up with advances in technology;
•
growth in number of customers or in customer usage;
•
the operations of our joint ventures that we do not control;
•
our ability to achieve reasonable rate treatment in our utility businesses;
•
changes in laws, rules and regulations affecting our international businesses, particularly in developing countries;
•
changes in laws, rules and regulations affecting our utilities businesses, including, but not limited to, regulations which may affect competition, the ability to recover net utility assets and other potential stranded costs by our utilities;
•
changes in law resulting from new local, state, federal or international energy legislation and changes in political or regulatory oversight or incentives affecting our wind business and solar projects, our other renewables projects and our initiatives in GHG reductions and energy storage, including government policies or tax incentives;
•
changes in environmental laws, including requirements for reduced emissions, GHG legislation, regulation, and/or treaties and CCR regulation and remediation;
•
changes in tax laws, including U.S. tax reform, and challenges to our tax positions;
•
the effects of litigation and government and regulatory investigations;
•
the performance of our acquisitions;
•
our ability to maintain adequate insurance;