XML 27 R52.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Regulatory Assets and Liabilities (Details) (Brazil Tariff Estimated Rate Change Liability [Member], USD $) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Jun. 30, 2012
Brazil Tariff Estimated Rate Change Liability [Member] |
Regulatory Liabilities [Line Items] |
Regulatory Liabilities | $ 536
Regulatory Liabilities Change Recognized During Period | $ 80

X
- Definition The change in regulatory liability recognized during the period. + References No definition available. + Details
Name: | aes_RegulatoryLiabilitiesChangeRecognizedDuringPeriod
Namespace Prefix: | aes_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 71 -Paragraph 11 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_RegulatoryLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_RegulatoryLiabilitiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration