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Derivative Instruments and Hedging Activities (Foreign Currency Derivatives) (Details) In Millions, unless otherwise specified		12 Months Ended
	Dec. 31, 2014 USD ($)	Dec. 31, 2014 Chilean Unidad De Fomento CLF Foreign Exchange Option and Forward USD ($)	Dec. 31, 2014 Chilean Unidad De Fomento CLF Foreign Exchange Option and Forward CLF	Dec. 31, 2014 Chilean Peso CLP Foreign Exchange Option and Forward USD ($)	Dec. 31, 2014 Chilean Peso CLP Foreign Exchange Option and Forward CLP	Dec. 31, 2014 Brazilian Real BRL Foreign Exchange Option and Forward USD ($)	Dec. 31, 2014 Brazilian Real BRL Foreign Exchange Option and Forward BRL	Dec. 31, 2014 Euro EUR Foreign Exchange Option and Forward USD ($)	Dec. 31, 2014 Euro EUR Foreign Exchange Option and Forward EUR (€)	Dec. 31, 2014 Colombian Peso COP Foreign Exchange Option and Forward USD ($)	Dec. 31, 2014 Colombian Peso COP Foreign Exchange Option and Forward COP	Dec. 31, 2014 Argentine Peso ARS Foreign Exchange Option and Forward USD ($)	Dec. 31, 2014 Argentine Peso ARS Foreign Exchange Option and Forward ARS	Dec. 31, 2014 British Pound GBP Foreign Exchange Option and Forward USD ($)	Dec. 31, 2014 British Pound GBP Foreign Exchange Option and Forward GBP (£)	Dec. 31, 2014 Kazakhstani Tenge Embedded Derivative Financial Instruments USD ($)	Dec. 31, 2014 Kazakhstani Tenge Embedded Derivative Financial Instruments KZT
Derivative [Line Items]
Derivative, notional amount	$ 3,000invest_DerivativeNotionalAmount	$ 404invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = aes_ForeignExchangeOptionandForwardMember / aes_DerivativeByTypeAxis = aes_ChileanUnidadDeFomentoClfMember	10invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = aes_ForeignExchangeOptionandForwardMember / aes_DerivativeByTypeAxis = aes_ChileanUnidadDeFomentoClfMember	$ 123invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = aes_ForeignExchangeOptionandForwardMember / aes_DerivativeByTypeAxis = aes_ChileanPesoClpMember	74,438invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = aes_ForeignExchangeOptionandForwardMember / aes_DerivativeByTypeAxis = aes_ChileanPesoClpMember	$ 75invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = aes_ForeignExchangeOptionandForwardMember / aes_DerivativeByTypeAxis = aes_BrazilianRealBrlMember	200invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = aes_ForeignExchangeOptionandForwardMember / aes_DerivativeByTypeAxis = aes_BrazilianRealBrlMember	$ 55invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = aes_ForeignExchangeOptionandForwardMember / aes_DerivativeByTypeAxis = aes_EuroEurMember	€ 45invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = aes_ForeignExchangeOptionandForwardMember / aes_DerivativeByTypeAxis = aes_EuroEurMember	$ 29invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = aes_ForeignExchangeOptionandForwardMember / aes_DerivativeByTypeAxis = aes_ColombianPesoCopMember	67,455invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = aes_ForeignExchangeOptionandForwardMember / aes_DerivativeByTypeAxis = aes_ColombianPesoCopMember	$ 226invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = aes_ForeignExchangeOptionandForwardMember / aes_DerivativeByTypeAxis = aes_ArgentinePesoArsMember	1,933invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = aes_ForeignExchangeOptionandForwardMember / aes_DerivativeByTypeAxis = aes_ArgentinePesoArsMember	$ 25invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = aes_ForeignExchangeOptionandForwardMember / aes_DerivativeByTypeAxis = aes_BritishPoundGbpMember	£ 16invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = aes_ForeignExchangeOptionandForwardMember / aes_DerivativeByTypeAxis = aes_BritishPoundGbpMember	$ 23invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = us-gaap_EmbeddedDerivativeFinancialInstrumentsMember / aes_DerivativeByTypeAxis = aes_KazakhstaniTengeKztMember	4,239invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = us-gaap_EmbeddedDerivativeFinancialInstrumentsMember / aes_DerivativeByTypeAxis = aes_KazakhstaniTengeKztMember
Derivative, average remaining maturity		1 year	1 year	1 year	1 year	1 year	1 year	1 year	1 year	1 year	1 year	10 years	10 years	1 year	1 year	1 year	1 year

X

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

+ Details

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Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeAverageRemainingMaturity1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration