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Investments In and Advances To Affiliates - Effective Equity Ownership Interest and Carrying Values (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
MW
Dec. 31, 2013
Dec. 31, 2012
Sep. 30, 2014
MW
Jun. 25, 2014
Investments in and Advances to Affiliates [Line Items]          
Production Capacity (MW) 2,072aes_GenerationCapacityMegaWatts        
Investments in and advances to affiliates $ 537us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures $ 1,010us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures $ 1,196us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures    
Gener Subsidiary          
Investments in and Advances to Affiliates [Line Items]          
Investment In Affiliate Ownership Percentage 71.00%aes_InvestmentInAffiliateOwnershipPercentage
/ invest_InvestmentAxis
= aes_GenerSubsidiaryMember		        
Silver Ridge Power          
Investments in and Advances to Affiliates [Line Items]          
Investments in and advances to affiliates 0us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ invest_InvestmentAxis
= aes_SilverRidgePowerMember		 281us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ invest_InvestmentAxis
= aes_SilverRidgePowerMember		      
Investment In Affiliate Ownership Percentage 0.00%aes_InvestmentInAffiliateOwnershipPercentage
/ invest_InvestmentAxis
= aes_SilverRidgePowerMember		 50.00%aes_InvestmentInAffiliateOwnershipPercentage
/ invest_InvestmentAxis
= aes_SilverRidgePowerMember		      
Solar Power PR, LLC          
Investments in and Advances to Affiliates [Line Items]          
Investments in and advances to affiliates 2us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ invest_InvestmentAxis
= aes_SolarPowerPRLLCMember		 10us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ invest_InvestmentAxis
= aes_SolarPowerPRLLCMember		      
Investment In Affiliate Ownership Percentage 50.00%aes_InvestmentInAffiliateOwnershipPercentage
/ invest_InvestmentAxis
= aes_SolarPowerPRLLCMember		 50.00%aes_InvestmentInAffiliateOwnershipPercentage
/ invest_InvestmentAxis
= aes_SolarPowerPRLLCMember		      
Barry          
Investments in and Advances to Affiliates [Line Items]          
Investments in and advances to affiliates 0us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ invest_InvestmentAxis
= aes_BarryAffiliateMember		 0us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ invest_InvestmentAxis
= aes_BarryAffiliateMember		      
Investment In Affiliate Ownership Percentage 100.00%aes_InvestmentInAffiliateOwnershipPercentage
/ invest_InvestmentAxis
= aes_BarryAffiliateMember		 100.00%aes_InvestmentInAffiliateOwnershipPercentage
/ invest_InvestmentAxis
= aes_BarryAffiliateMember		      
Elsta          
Investments in and Advances to Affiliates [Line Items]          
Production Capacity (MW)   630aes_GenerationCapacityMegaWatts
/ invest_InvestmentAxis
= aes_ElstaMember		      
Investments in and advances to affiliates 54us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ invest_InvestmentAxis
= aes_ElstaMember		 120us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ invest_InvestmentAxis
= aes_ElstaMember		      
Investment In Affiliate Ownership Percentage 50.00%aes_InvestmentInAffiliateOwnershipPercentage
/ invest_InvestmentAxis
= aes_ElstaMember		 50.00%aes_InvestmentInAffiliateOwnershipPercentage
/ invest_InvestmentAxis
= aes_ElstaMember		      
Entek          
Investments in and Advances to Affiliates [Line Items]          
Investment In Affiliate Ownership Percentage Sold       49.62%aes_InvestmentInAffiliateOwnershipPercentageSold
/ invest_InvestmentAxis
= aes_EntekMember		  
Production Capacity (MW)       364aes_GenerationCapacityMegaWatts
/ invest_InvestmentAxis
= aes_EntekMember		  
Investments in and advances to affiliates 0us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ invest_InvestmentAxis
= aes_EntekMember		 165us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ invest_InvestmentAxis
= aes_EntekMember		      
Investment In Affiliate Ownership Percentage 0.00%aes_InvestmentInAffiliateOwnershipPercentage
/ invest_InvestmentAxis
= aes_EntekMember		 50.00%aes_InvestmentInAffiliateOwnershipPercentage
/ invest_InvestmentAxis
= aes_EntekMember		      
Guacolda          
Investments in and Advances to Affiliates [Line Items]          
Investments in and advances to affiliates 285us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ invest_InvestmentAxis
= aes_GuacoldaAffiliateMember		 245us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ invest_InvestmentAxis
= aes_GuacoldaAffiliateMember		      
Investment In Affiliate Ownership Percentage 35.00%aes_InvestmentInAffiliateOwnershipPercentage
/ invest_InvestmentAxis
= aes_GuacoldaAffiliateMember		 35.00%aes_InvestmentInAffiliateOwnershipPercentage
/ invest_InvestmentAxis
= aes_GuacoldaAffiliateMember		      
OPGC          
Investments in and Advances to Affiliates [Line Items]          
Production Capacity (MW) 1,320aes_GenerationCapacityMegaWatts
/ invest_InvestmentAxis
= aes_OpgcAffiliateMember		        
Investments in and advances to affiliates 194us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ invest_InvestmentAxis
= aes_OpgcAffiliateMember		 186us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ invest_InvestmentAxis
= aes_OpgcAffiliateMember		      
Investment In Affiliate Ownership Percentage 49.00%aes_InvestmentInAffiliateOwnershipPercentage
/ invest_InvestmentAxis
= aes_OpgcAffiliateMember		 49.00%aes_InvestmentInAffiliateOwnershipPercentage
/ invest_InvestmentAxis
= aes_OpgcAffiliateMember		      
Investments in and Advances to Affiliates, Additional Information (Project Level) 186aes_InvestmentsinandAdvancestoAffiliatesAdditionalInformationProjectLevel
/ invest_InvestmentAxis
= aes_OpgcAffiliateMember		        
Investments in and Advances to Affiliates, Additional Information (Ownership Adjusted) 91        
Other Affiliates          
Investments in and Advances to Affiliates [Line Items]          
Investments in and advances to affiliates 2us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ invest_InvestmentAxis
= us-gaap_OtherAffiliatesMember		 3us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ invest_InvestmentAxis
= us-gaap_OtherAffiliatesMember		      
TURKEY          
Investments in and Advances to Affiliates [Line Items]          
Investment In Affiliate Ownership Percentage 100.00%aes_InvestmentInAffiliateOwnershipPercentage
/ invest_InvestmentAxis
= country_TR		        
Entek          
Investments in and Advances to Affiliates [Line Items]          
Pre-tax loss of disposed businesses, Excluding gain on disposal, included in continuing operations $ 9aes_PretaxlossofdisposedbusinessesExcludinggainondisposalincludedincontinuingoperations
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= aes_EntekMember		 $ 29aes_PretaxlossofdisposedbusinessesExcludinggainondisposalincludedincontinuingoperations
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= aes_EntekMember		 $ 12aes_PretaxlossofdisposedbusinessesExcludinggainondisposalincludedincontinuingoperations
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= aes_EntekMember		    
Masinloc Subsidiary          
Investments in and Advances to Affiliates [Line Items]          
Investment In Affiliate Ownership Percentage Sold         45.00%aes_InvestmentInAffiliateOwnershipPercentageSold
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= aes_MasinlocSubsidiaryMember