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Share-Based Compensation (PSUs Vested and Converted) (Details) (PSUs) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested during the year	85us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod / us-gaap_AwardTypeAxis = aes_PerformanceStockUnitsMember	0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod / us-gaap_AwardTypeAxis = aes_PerformanceStockUnitsMember	343us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod / us-gaap_AwardTypeAxis = aes_PerformanceStockUnitsMember
Award converted during the year, net of shares withheld for taxes	287aes_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConvertedInPeriod / us-gaap_AwardTypeAxis = aes_PerformanceStockUnitsMember	0aes_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConvertedInPeriod / us-gaap_AwardTypeAxis = aes_PerformanceStockUnitsMember	0aes_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConvertedInPeriod / us-gaap_AwardTypeAxis = aes_PerformanceStockUnitsMember
Shares withheld for taxes	141aes_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConvertedInPeriodSharesWithheldForTaxes / us-gaap_AwardTypeAxis = aes_PerformanceStockUnitsMember	0aes_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConvertedInPeriodSharesWithheldForTaxes / us-gaap_AwardTypeAxis = aes_PerformanceStockUnitsMember	0aes_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConvertedInPeriodSharesWithheldForTaxes / us-gaap_AwardTypeAxis = aes_PerformanceStockUnitsMember

X

- Definition

The number of shares (or other type of equity) coverted during the period, net of shares withheld for taxes.

+ References

No definition available.

+ Details

Name:	aes_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConvertedInPeriod
Namespace Prefix:	aes_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of shares (or other type of equity) withheld during the period for taxes on shares converted.

+ References

No definition available.

+ Details

Name:	aes_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConvertedInPeriodSharesWithheldForTaxes
Namespace Prefix:	aes_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(2)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Details

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