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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) | 2,072 aes_GenerationCapacityMegaWatts |  |  |  |
Investments in and advances to affiliates | $ 537 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures | $ 1,010 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures | $ 1,196 us-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 | 0 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / invest_InvestmentAxis = aes_SilverRidgePowerMember | 281 us-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 | 2 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / invest_InvestmentAxis = aes_SolarPowerPRLLCMember | 10 us-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 | 0 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / invest_InvestmentAxis = aes_BarryAffiliateMember | 0 us-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) |  | 630 aes_GenerationCapacityMegaWatts / invest_InvestmentAxis = aes_ElstaMember |  |  |
Investments in and advances to affiliates | 54 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / invest_InvestmentAxis = aes_ElstaMember | 120 us-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) |  |  |  | 364 aes_GenerationCapacityMegaWatts / invest_InvestmentAxis = aes_EntekMember |
Investments in and advances to affiliates | 0 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / invest_InvestmentAxis = aes_EntekMember | 165 us-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 | 285 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / invest_InvestmentAxis = aes_GuacoldaAffiliateMember | 245 us-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) | 1,320 aes_GenerationCapacityMegaWatts / invest_InvestmentAxis = aes_OpgcAffiliateMember |  |  |  |
Investments in and advances to affiliates | 194 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / invest_InvestmentAxis = aes_OpgcAffiliateMember | 186 us-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) | 186 aes_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 | 2 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / invest_InvestmentAxis = us-gaap_OtherAffiliatesMember | 3 us-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 | $ 9 aes_PretaxlossofdisposedbusinessesExcludinggainondisposalincludedincontinuingoperations / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = aes_EntekMember | $ 29 aes_PretaxlossofdisposedbusinessesExcludinggainondisposalincludedincontinuingoperations / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = aes_EntekMember | $ 12 aes_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

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- Definition Generation Capacity Mega Watts + References No definition available. + Details
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- Definition The effective percentage of the affiliate's voting interest owned by the reporting entity (directly or indirectly) + References No definition available. + Details
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- Definition The effective percentage of the affiliate's voting interest owned by the reporting entity (directly or indirectly) + References No definition available. + Details
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- Definition Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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