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Fair Value (Quantitative Information) (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
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Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |
Fair Value | $ (4) | $ (341) | $ (94)
Interest rate derivatives |  |  |
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |
Fair Value | (101) | (412) | (128)
Interest rate derivatives | Minimum |  |  |
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |
Subsidiaries' credit risk | 4.44% |  |
Interest rate derivatives | Maximum |  |  |
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |
Subsidiaries' credit risk | 5.87% |  |
Interest rate derivatives | Weighted Average |  |  |
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |
Subsidiaries' credit risk | 4.69% |  |
Foreign Currency Embedded Derivative Argentine Peso |  |  |
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |
Fair Value | 98 |  |
Foreign Currency Embedded Derivative Argentine Peso | Minimum |  |  |
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |
Argentine Peso to U.S. Dollar currency exchange rate after 1 year | 9.94 |  |
Foreign Currency Embedded Derivative Argentine Peso | Maximum |  |  |
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |
Argentine Peso to U.S. Dollar currency exchange rate after 1 year | 21.11 |  |
Foreign Currency Embedded Derivative Argentine Peso | Weighted Average |  |  |
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |
Argentine Peso to U.S. Dollar currency exchange rate after 1 year | 16.35 |  |
Foreign Currency Embedded Derivative Euro |  |  |
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |
Fair Value | (4) |  |
Foreign Currency Embedded Derivative Euro | Weighted Average |  |  |
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |
Subsidiaries' credit risk | 4.44% |  |
Foreign Currency Embedded Derivative Other |  |  |
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |
Fair Value | (1) |  |
Commodity And Other Derivative Other |  |  |
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |
Fair Value | $ 4 |  |

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- Definition The credit rating used by the parent company or subsidiary to determine the fair value of derivative instruments at the balance sheet date. + References No definition available. + Details
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Namespace Prefix: | aes_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
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Balance Type: | na
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- Definition This element represents net derivative assets and liabilities measured at fair value using significant unobservable inputs (Level 3) which are required for reconciliation purposes of beginning and ending balances. + References No definition available. + Details
Name: | aes_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsLiabilitiesValue
Namespace Prefix: | aes_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The U.S. Dollar indexation in Argentina used to determine the fair value of derivative instruments at the balance sheet date. + References No definition available. + Details
Name: | aes_USDollarIndexationInArgentina
Namespace Prefix: | aes_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant