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Goodwill and Other Intangible Assets (Intangible Assets Acquired) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012
Indefinite-lived Intangible Assets [Line Items] |  |
Indefinite Lived Intangible Asset Acquired Amount | $ 5 | $ 19
Renewable Energy Certificates [Member] |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Indefinite Lived Intangible Asset Acquired Amount | 3 | 5
Water rights |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Indefinite Lived Intangible Asset Acquired Amount |  | 13
Other |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Indefinite Lived Intangible Asset Acquired Amount | $ 2 | $ 1

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- Definition The aggregate cost of a major indefinite-lived intangible asset class acquired, during the period, either individually or as part of a group of assets (in either an asset acquisition or business combination). + References No definition available. + Details
Name: | aes_IndefiniteLivedIntangibleAssetAcquiredAmount
Namespace Prefix: | aes_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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