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Financing Receivables (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended | 3 Months Ended
--- | --- | ---
Dec. 31, 2014 agreement MW | Dec. 31, 2013 agreement | Dec. 31, 2014
Schedule of Financing Receivables [Line Items] |  |  |
Financing receivable | $ 293 us-gaap_NotesReceivableNet | $ 184 us-gaap_NotesReceivableNet | $ 293 us-gaap_NotesReceivableNet
Number of Foninvemem Agreements | 3 aes_NumberofFoninvememAgreements |  |
Foninvemem Agreement, collection period |  | 10 years |
Number of Foninvemem Agreements with active collections |  | 2 aes_NumberofFoninvememAgreementsWithActiveCollections |
Generation Capacity Mega Watts, Commitment for Future Capacity, Mega Watts | 93 aes_GenerationCapacityMegaWattsCommitmentforFutureCapacityMegaWatts |  | 93 aes_GenerationCapacityMegaWattsCommitmentforFutureCapacityMegaWatts
ARGENTINA |  |  |
Schedule of Financing Receivables [Line Items] |  |  |
Financing receivable | 278 us-gaap_NotesReceivableNet / us-gaap_StatementGeographicalAxis = country_AR | 164 us-gaap_NotesReceivableNet / us-gaap_StatementGeographicalAxis = country_AR | 278 us-gaap_NotesReceivableNet / us-gaap_StatementGeographicalAxis = country_AR
Financing Receivable, Gross |  | 286 us-gaap_NotesReceivableGross / us-gaap_StatementGeographicalAxis = country_AR |
Noncurrent receivables |  | 122 us-gaap_NontradeReceivablesNoncurrent / us-gaap_StatementGeographicalAxis = country_AR |
Derivative Assets, Gross | 208 us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeAsset / us-gaap_StatementGeographicalAxis = country_AR | 97 us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeAsset / us-gaap_StatementGeographicalAxis = country_AR | 208 us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeAsset / us-gaap_StatementGeographicalAxis = country_AR
Interest Income, Other |  |  | 59 us-gaap_InterestIncomeOther / us-gaap_StatementGeographicalAxis = country_AR
Embedded Derivative, Gain on Embedded Derivative |  |  | 106 us-gaap_EmbeddedDerivativeGainOnEmbeddedDerivative / us-gaap_StatementGeographicalAxis = country_AR
Dominican Republic |  |  |
Schedule of Financing Receivables [Line Items] |  |  |
Financing receivable | 0 us-gaap_NotesReceivableNet / us-gaap_StatementGeographicalAxis = country_DO | 2 us-gaap_NotesReceivableNet / us-gaap_StatementGeographicalAxis = country_DO | 0 us-gaap_NotesReceivableNet / us-gaap_StatementGeographicalAxis = country_DO
Brazil |  |  |
Schedule of Financing Receivables [Line Items] |  |  |
Financing receivable | 15 us-gaap_NotesReceivableNet / us-gaap_StatementGeographicalAxis = country_BR | 18 us-gaap_NotesReceivableNet / us-gaap_StatementGeographicalAxis = country_BR | 15 us-gaap_NotesReceivableNet / us-gaap_StatementGeographicalAxis = country_BR
Argentina |  |  |
Schedule of Financing Receivables [Line Items] |  |  |
Financing Receivable, Gross | $ 120 us-gaap_NotesReceivableGross / aes_ContributedtoFinancingReceivablesAxis = aes_ArgentinaMember |  | $ 120 us-gaap_NotesReceivableGross / aes_ContributedtoFinancingReceivablesAxis = aes_ArgentinaMember

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- Definition Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as an asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624163-113959 + Details
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- Definition Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10(3)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Subparagraph 3 -Article 9 + Details
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- Definition Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services. + 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 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 + Details
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