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Debt (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012
Nonrecourse Debt Default [Line Items]
Default	$ 1,269
Sonel [Member]
Nonrecourse Debt Default [Line Items]
Net Assets	318
Kelanitissa [Member]
Nonrecourse Debt Default [Line Items]
Net Assets	50
Maritza [Member]
Nonrecourse Debt Default [Line Items]
Net Assets	228
Saurashtra [Member]
Nonrecourse Debt Default [Line Items]
Net Assets	16
Covenant Violation [Member] | Sonel [Member]
Nonrecourse Debt Default [Line Items]
Default	318
Covenant Violation [Member] | Kelanitissa [Member]
Nonrecourse Debt Default [Line Items]
Default	16
Covenant Violation [Member] | Maritza [Member]
Nonrecourse Debt Default [Line Items]
Default	907
Covenant Violation [Member] | Saurashtra [Member]
Nonrecourse Debt Default [Line Items]
Default	$ 28

X

- Definition

Amount of outstanding debt or borrowing associated with any securities or credit agreement for which there has been a default in principal, interest, sinking fund, or redemption provisions, or any breach of covenant that existed at the end of the period and subsequently has not been cured.

+ References

No definition available.

+ Details

Name:	aes_DebtDefaultAmount
Namespace Prefix:	aes_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	aes_NonrecourseDebtDefaultLineItems
Namespace Prefix:	aes_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The net of assets and liabilities.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Paragraph 19

-Article 6



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 946

-SubTopic 225

-Section S99

-Paragraph 3

-Subparagraph (SX 210.6-09.6,7)

-URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606914-122999



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 946

-SubTopic 210

-Section S99

-Paragraph 2

-Subparagraph (SX 210.6-05.4)

-URI http://asc.fasb.org/extlink&oid=6488278&loc=d3e604008-122996



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 05

-Paragraph 4

-Article 6

+ Details

Name:	us-gaap_AssetsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant