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Debt (Non-Recourse Debt Carrying Amounts and Terms) (Details) (USD $) | Dec. 31, 2014 | Dec. 31, 2013
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Debt Instrument [Line Items] |  |
Non Recourse Debt Total | $ 15,600,000,000 aes_NonRecourseDebtTotal | $ 15,380,000,000 aes_NonRecourseDebtTotal
Non-recourse Debt Current Maturities | (1,982,000,000)aes_NonRecourseDebtCurrent | (2,062,000,000)aes_NonRecourseDebtCurrent
Non-recourse debt - noncurrent, balance at variable interest entities | 13,618,000,000 aes_NonRecourseDebtNonCurrent | 13,318,000,000 aes_NonRecourseDebtNonCurrent
Derivative, notional amount | 3,000,000,000 invest_DerivativeNotionalAmount |
Interest rate swap, fixed minimum interest rate | 2.87%aes_InterestRateSwapsRangeOfInterestRatesFixedMinimum |
Interest rate swap, fixed maximum interest rate | 9.80%aes_InterestRateSwapsRangeOfInterestRatesFixedMaximum |
Debt excluded from non-recourse debt and included in current and noncurrent liabilities of held for sale and discontinued businesses | 0 aes_NonRecourseDebtHeldForSaleOrDiscontinuedOperations | 658,000,000 aes_NonRecourseDebtHeldForSaleOrDiscontinuedOperations
Variable Rate Debt | Bank loans |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 3.42%us-gaap_DebtInstrumentInterestRateEffectivePercentage / aes_NonRecourseDebtByTypeAxis = us-gaap_NotesPayableToBanksMember / aes_NonRecourseDebtInterestTypeAxis = aes_VariableRateDebtMember |
Non Recourse Debt Total | 1,893,000,000 aes_NonRecourseDebtTotal / aes_NonRecourseDebtByTypeAxis = us-gaap_NotesPayableToBanksMember / aes_NonRecourseDebtInterestTypeAxis = aes_VariableRateDebtMember | 2,783,000,000 aes_NonRecourseDebtTotal / aes_NonRecourseDebtByTypeAxis = us-gaap_NotesPayableToBanksMember / aes_NonRecourseDebtInterestTypeAxis = aes_VariableRateDebtMember
Variable Rate Debt | Notes and bonds |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 12.06%us-gaap_DebtInstrumentInterestRateEffectivePercentage / aes_NonRecourseDebtByTypeAxis = us-gaap_LoansPayableMember / aes_NonRecourseDebtInterestTypeAxis = aes_VariableRateDebtMember |
Non Recourse Debt Total | 1,912,000,000 aes_NonRecourseDebtTotal / aes_NonRecourseDebtByTypeAxis = us-gaap_LoansPayableMember / aes_NonRecourseDebtInterestTypeAxis = aes_VariableRateDebtMember | 1,845,000,000 aes_NonRecourseDebtTotal / aes_NonRecourseDebtByTypeAxis = us-gaap_LoansPayableMember / aes_NonRecourseDebtInterestTypeAxis = aes_VariableRateDebtMember
Variable Rate Debt | Debt to (or guaranteed by) multilateral, export credit agencies or development banks |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 2.62%us-gaap_DebtInstrumentInterestRateEffectivePercentage / aes_NonRecourseDebtByTypeAxis = aes_MultilateralDebtMember / aes_NonRecourseDebtInterestTypeAxis = aes_VariableRateDebtMember |
Non Recourse Debt Total | 2,375,000,000 aes_NonRecourseDebtTotal / aes_NonRecourseDebtByTypeAxis = aes_MultilateralDebtMember / aes_NonRecourseDebtInterestTypeAxis = aes_VariableRateDebtMember | 2,446,000,000 aes_NonRecourseDebtTotal / aes_NonRecourseDebtByTypeAxis = aes_MultilateralDebtMember / aes_NonRecourseDebtInterestTypeAxis = aes_VariableRateDebtMember
Variable Rate Debt | Other |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 8.46%us-gaap_DebtInstrumentInterestRateEffectivePercentage / aes_NonRecourseDebtByTypeAxis = aes_OtherNonrecourseDebtMember / aes_NonRecourseDebtInterestTypeAxis = aes_VariableRateDebtMember |
Non Recourse Debt Total | 668,000,000 aes_NonRecourseDebtTotal / aes_NonRecourseDebtByTypeAxis = aes_OtherNonrecourseDebtMember / aes_NonRecourseDebtInterestTypeAxis = aes_VariableRateDebtMember | 349,000,000 aes_NonRecourseDebtTotal / aes_NonRecourseDebtByTypeAxis = aes_OtherNonrecourseDebtMember / aes_NonRecourseDebtInterestTypeAxis = aes_VariableRateDebtMember
Fixed Rate Debt | Bank loans |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 5.44%us-gaap_DebtInstrumentInterestRateEffectivePercentage / aes_NonRecourseDebtByTypeAxis = us-gaap_NotesPayableToBanksMember / aes_NonRecourseDebtInterestTypeAxis = aes_FixedRateDebtMember |
Non Recourse Debt Total | 750,000,000 aes_NonRecourseDebtTotal / aes_NonRecourseDebtByTypeAxis = us-gaap_NotesPayableToBanksMember / aes_NonRecourseDebtInterestTypeAxis = aes_FixedRateDebtMember | 477,000,000 aes_NonRecourseDebtTotal / aes_NonRecourseDebtByTypeAxis = us-gaap_NotesPayableToBanksMember / aes_NonRecourseDebtInterestTypeAxis = aes_FixedRateDebtMember
Fixed Rate Debt | Notes and bonds |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 5.89%us-gaap_DebtInstrumentInterestRateEffectivePercentage / aes_NonRecourseDebtByTypeAxis = us-gaap_LoansPayableMember / aes_NonRecourseDebtInterestTypeAxis = aes_FixedRateDebtMember |
Non Recourse Debt Total | 7,654,000,000 aes_NonRecourseDebtTotal / aes_NonRecourseDebtByTypeAxis = us-gaap_LoansPayableMember / aes_NonRecourseDebtInterestTypeAxis = aes_FixedRateDebtMember | 7,164,000,000 aes_NonRecourseDebtTotal / aes_NonRecourseDebtByTypeAxis = us-gaap_LoansPayableMember / aes_NonRecourseDebtInterestTypeAxis = aes_FixedRateDebtMember
Fixed Rate Debt | Debt to (or guaranteed by) multilateral, export credit agencies or development banks |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 5.34%us-gaap_DebtInstrumentInterestRateEffectivePercentage / aes_NonRecourseDebtByTypeAxis = aes_MultilateralDebtMember / aes_NonRecourseDebtInterestTypeAxis = aes_FixedRateDebtMember |
Non Recourse Debt Total | 259,000,000 aes_NonRecourseDebtTotal / aes_NonRecourseDebtByTypeAxis = aes_MultilateralDebtMember / aes_NonRecourseDebtInterestTypeAxis = aes_FixedRateDebtMember | 164,000,000 aes_NonRecourseDebtTotal / aes_NonRecourseDebtByTypeAxis = aes_MultilateralDebtMember / aes_NonRecourseDebtInterestTypeAxis = aes_FixedRateDebtMember
Fixed Rate Debt | Other |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 5.64%us-gaap_DebtInstrumentInterestRateEffectivePercentage / aes_NonRecourseDebtByTypeAxis = aes_OtherNonrecourseDebtMember / aes_NonRecourseDebtInterestTypeAxis = aes_FixedRateDebtMember |
Non Recourse Debt Total | $ 89,000,000 aes_NonRecourseDebtTotal / aes_NonRecourseDebtByTypeAxis = aes_OtherNonrecourseDebtMember / aes_NonRecourseDebtInterestTypeAxis = aes_FixedRateDebtMember | $ 152,000,000 aes_NonRecourseDebtTotal / aes_NonRecourseDebtByTypeAxis = aes_OtherNonrecourseDebtMember / aes_NonRecourseDebtInterestTypeAxis = aes_FixedRateDebtMember

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- Definition The maximum of the range of interest rates on variable rate non-recourse debt fixed by interest rate swap agreements. + References No definition available. + Details
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- Definition The minimum of the range of interest rates on variable rate non-recourse debt fixed by interest rate swap agreements. + References No definition available. + Details
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- Definition The current portion of the entity's non-recourse debt. Non-recourse debt is secured by the capital stock, physical assets, contracts and cash flows of the related subsidiary. The risk is limited to the respective subsidiary business and is without recourse to the Parent Company and other subsidiaries. + References No definition available. + Details
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- Definition The amount of non-recourse debt classified as current and long-term liabilities of held for sale and discontinued businesses + References No definition available. + Details
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- Definition The non-current portion of the entity's non-recourse debt. Non-recourse debt is secured by the capital stock, physical assets, contracts and cash flows of the related subsidiary. The risk is limited to the respective subsidiary business and is without recourse to the Parent Company and other subsidiaries. + References No definition available. + Details
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- Definition Non-recourse debt is secured by the capital stock, physical assets, contracts and cash flows of the related subsidiary. The risk is limited to the respective subsidiary business and is without recourse to the Parent Company and other subsidiaries. + References No definition available. + Details
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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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