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Debt (Recourse Debt Narrative) (Details) (USD $)
 12 Months Ended 0 Months Ended 1 Months Ended 0 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
May 20, 2014
Aug. 25, 2014
Feb. 28, 2014
Mar. 07, 2014
Jun. 16, 2014
Jul. 25, 2014
Debt Instrument [Line Items]                  
Loss on the extinguishment of debt $ 261,000,000us-gaap_GainsLossesOnExtinguishmentOfDebt $ 229,000,000us-gaap_GainsLossesOnExtinguishmentOfDebt $ 8,000,000us-gaap_GainsLossesOnExtinguishmentOfDebt            
Recourse Debt                  
Debt Instrument [Line Items]                  
Stated interest rate 6.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= aes_RecourseDebtMember		                
Recourse Debt Covenants and Guarantees:                  
Percentage of capital stock of foreign subsidiaries securing obligations 65.00%aes_DebtInstrumentPercentageofCapitalStockofForeignSubsidiariesSecuringObligations
/ us-gaap_LongtermDebtTypeAxis
= aes_RecourseDebtMember		                
Covenants, sale of guarantor or its subsidiaries percentage of proceeds used to repay debt 60.00%aes_DebtInstrumentRestrictiveCovenantsSaleofGuarantororItsSubsidiariesPercentageofProceedsUsedtoRepayDebt
/ us-gaap_LongtermDebtTypeAxis
= aes_RecourseDebtMember		                
Covenants, sale of guarantor or its subsidiaries percentage of proceeds used to repay debt if debt to cash flow is less than 5 50.00%aes_DebtInstrumentRestrictiveCovenantsSaleofGuarantororItsSubsidiariesPercentageofProceedsUsedtoRepayDebtIfDebttoCashFlowisLessthan5
/ us-gaap_LongtermDebtTypeAxis
= aes_RecourseDebtMember		                
Minimum ratio of operating cash flow to interest charges 1.3aes_DebtInstrumentRestrictiveCovenantsMinimumRatioofOperatingCashFlowtoInterestCharges
/ us-gaap_LongtermDebtTypeAxis
= aes_RecourseDebtMember		                
Maximum ratio of debt to cash flow 7.5aes_DebtInstrumentRestrictiveCovenantsMaximumRatioofDebttoCashFlow
/ us-gaap_LongtermDebtTypeAxis
= aes_RecourseDebtMember		                
Recourse Debt | Five Point Five Zero Percent Senior Notes Due 2024                  
Debt Instrument [Line Items]                  
Stated interest rate             5.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= aes_FivePointFiveZeroPercentSeniorNotesDue2024Member
/ us-gaap_LongtermDebtTypeAxis
= aes_RecourseDebtMember		    
Debt face amount             750,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= aes_FivePointFiveZeroPercentSeniorNotesDue2024Member
/ us-gaap_LongtermDebtTypeAxis
= aes_RecourseDebtMember		    
Recourse Debt | Three Percent Above Three Month LIBOR Floating Rate Notes Due June 2019                  
Debt Instrument [Line Items]                  
Debt face amount       775,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= aes_ThreePercentAboveThreeMonthLIBORFloatingRateNotesDueJune2019Member
/ us-gaap_LongtermDebtTypeAxis
= aes_RecourseDebtMember		          
Basis spread on variable rate       3.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= aes_ThreePercentAboveThreeMonthLIBORFloatingRateNotesDueJune2019Member
/ us-gaap_LongtermDebtTypeAxis
= aes_RecourseDebtMember		          
Recourse Debt                  
Debt Instrument [Line Items]                  
Loss on the extinguishment of debt         40,000,000us-gaap_GainsLossesOnExtinguishmentOfDebt
/ us-gaap_ExtinguishmentOfDebtAxis
= aes_RecourseDebtMember		        
Debt Instrument, Notice Call to Retire Notes                 320,000,000aes_DebtInstrumentNoticeCalltoRetireNotes
/ us-gaap_ExtinguishmentOfDebtAxis
= aes_RecourseDebtMember
Recourse Debt | 7.75% Senior Notes Due 2014                  
Debt Instrument [Line Items]                  
Debt terminated amount           110,000,000us-gaap_ExtinguishmentOfDebtAmount
/ us-gaap_DebtInstrumentAxis
= aes_A7.75SeniorNotesDue2014Member
/ us-gaap_ExtinguishmentOfDebtAxis
= aes_RecourseDebtMember		      
Stated interest rate           7.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= aes_A7.75SeniorNotesDue2014Member
/ us-gaap_ExtinguishmentOfDebtAxis
= aes_RecourseDebtMember		      
Recourse Debt | 8.0% Senior Notes Due 2017                  
Debt Instrument [Line Items]                  
Debt terminated amount             625,000,000us-gaap_ExtinguishmentOfDebtAmount
/ us-gaap_DebtInstrumentAxis
= aes_A8.0SeniorNotesDue2017Member
/ us-gaap_ExtinguishmentOfDebtAxis
= aes_RecourseDebtMember		    
Stated interest rate             8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= aes_A8.0SeniorNotesDue2017Member
/ us-gaap_ExtinguishmentOfDebtAxis
= aes_RecourseDebtMember		    
Loss on the extinguishment of debt             132,000,000us-gaap_GainsLossesOnExtinguishmentOfDebt
/ us-gaap_DebtInstrumentAxis
= aes_A8.0SeniorNotesDue2017Member
/ us-gaap_ExtinguishmentOfDebtAxis
= aes_RecourseDebtMember		    
Recourse Debt | Senior Secured Term Loan LIBOR Plus 2.75% Due 2018                  
Debt Instrument [Line Items]                  
Debt terminated amount       767,000,000us-gaap_ExtinguishmentOfDebtAmount
/ us-gaap_DebtInstrumentAxis
= aes_SeniorSecuredTermLoanLIBORPlus275Due2018Member
/ us-gaap_ExtinguishmentOfDebtAxis
= aes_RecourseDebtMember		       29,000,000us-gaap_ExtinguishmentOfDebtAmount
/ us-gaap_DebtInstrumentAxis
= aes_SeniorSecuredTermLoanLIBORPlus275Due2018Member
/ us-gaap_ExtinguishmentOfDebtAxis
= aes_RecourseDebtMember		  
Loss on the extinguishment of debt       10,000,000us-gaap_GainsLossesOnExtinguishmentOfDebt
/ us-gaap_DebtInstrumentAxis
= aes_SeniorSecuredTermLoanLIBORPlus275Due2018Member
/ us-gaap_ExtinguishmentOfDebtAxis
= aes_RecourseDebtMember		          
Recourse Debt | 7.75% Senior Unsecured Note Due 2015                  
Debt Instrument [Line Items]                  
Debt Instrument, Notice Call to Retire Notes                 160,000,000aes_DebtInstrumentNoticeCalltoRetireNotes
/ us-gaap_DebtInstrumentAxis
= aes_SeniorUnsecuredNote775Due2015Member
/ us-gaap_ExtinguishmentOfDebtAxis
= aes_RecourseDebtMember
Recourse Debt | 9.75% Senior Unsecured Note Due 2016                  
Debt Instrument [Line Items]                  
Debt Instrument, Notice Call to Retire Notes                 $ 160,000,000aes_DebtInstrumentNoticeCalltoRetireNotes
/ us-gaap_DebtInstrumentAxis
= aes_SeniorUnsecuredNote975Due2016Member
/ us-gaap_ExtinguishmentOfDebtAxis
= aes_RecourseDebtMember