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v2.4.1.9

Debt - Non-Recourse Debt Narrative (Details) (USD $) | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Debt Instrument [Line Items] |  |
Loss on extinguishment of debt | $ (23,000,000)us-gaap_GainsLossesOnExtinguishmentOfDebt | $ (134,000,000)us-gaap_GainsLossesOnExtinguishmentOfDebt
Nonrecourse Debt [Member] | Gener Subsidiary [Member] |  |
Debt Instrument [Line Items] |  |
Issued new debt | 297,000,000 us-gaap_DebtInstrumentFaceAmount / dei_LegalEntityAxis = aes_GenerSubsidiaryMember / us-gaap_LongtermDebtTypeAxis = aes_NonrecourseDebtMember |
Nonrecourse Debt [Member] | Sul Subsidiary [Member] |  |
Debt Instrument [Line Items] |  |
Issued new debt | 177,000,000 us-gaap_DebtInstrumentFaceAmount / dei_LegalEntityAxis = aes_SulSubsidiaryMember / us-gaap_LongtermDebtTypeAxis = aes_NonrecourseDebtMember |
Repayments of Debt | $ 145,000,000 us-gaap_RepaymentsOfDebt / dei_LegalEntityAxis = aes_SulSubsidiaryMember / us-gaap_LongtermDebtTypeAxis = aes_NonrecourseDebtMember |

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- Definition Face (par) amount of debt instrument at time of issuance. + 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 FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12317-112629 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12355-112629 + Details
Name: | us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations. + References No definition available. + Details
Name: | us-gaap_RepaymentsOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | us-gaap_LongtermDebtTypeAxis=aes_NonrecourseDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |