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Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 83us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent	$ 96us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Other intangible assets, accumulated amortization	121us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization	158us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Common stock, par value (in dollars per share)	$ 0.01us-gaap_CommonStockParOrStatedValuePerShare	$ 0.01us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized (in shares)	1,200,000,000us-gaap_CommonStockSharesAuthorized	1,200,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued (in shares)	815,087,569us-gaap_CommonStockSharesIssued	814,539,146us-gaap_CommonStockSharesIssued
Common stock, shares outstanding (in shares)	702,899,220us-gaap_CommonStockSharesOutstanding	703,851,297us-gaap_CommonStockSharesOutstanding
Treasury stock, shares (in shares)	112,188,349us-gaap_TreasuryStockShares	110,687,849us-gaap_TreasuryStockShares
Variable Interest Entity [Line Items]
Non-recourse debt - current balance at variable interest entities	1,831aes_NonRecourseDebtCurrentBalance	1,982aes_NonRecourseDebtCurrentBalance
Consolidated Variable Interest Entities [Member]
Variable Interest Entity [Line Items]
Non-recourse debt - current balance at variable interest entities	215aes_NonRecourseDebtCurrentBalance / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember	240aes_NonRecourseDebtCurrentBalance / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
Non-recourse debt - current balance at variable interest entities	$ 1,062aes_NonRecourseDebtNoncurrentBalance / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember	$ 1,030aes_NonRecourseDebtNoncurrentBalance / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityPrimaryBeneficiaryMember

X

- 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.

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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.

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- Definition

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

+ References

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-Publisher SEC

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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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