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Equity (Tables) | 3 Months Ended
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Jun. 30, 2012
Equity Tables [Abstract] |
Schedule of Stockholders Equity [Table Text Block] |
|  |  | Six Months Ended June 30, 2012 |  | Six Months Ended June 30, 2011
|  |  | The AES |  |  |  |  |  | The AES |  |  |  |
|  |  | Corporation |  |  |  |  |  | Corporation |  |  |  |
|  |  | Stockholders' |  | Noncontrolling |  | Total |  | Stockholders' |  | Noncontrolling |  | Total
|  |  | Equity |  | Interests |  | Equity |  | Equity |  | Interests |  | Equity
|  | (in millions) | (in millions)
Balance at January 1 |  | $ | 5,946 |  | $ | 3,783 |  | $ | 9,729 |  | $ | 6,473 |  | $ | 3,940 |  | $ | 10,413
Net income |  |  | 481 |  |  | 241 |  |  | 722 |  |  | 398 |  |  | 512 |  |  | 910
Total change in fair value of available-for-sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| securities, net of income tax |  |  | - |  |  | - |  |  | - |  |  | (2) |  |  | - |  |  | (2)
Total foreign currency translation adjustment, |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| net of income tax |  |  | (134) |  |  | (110) |  |  | (244) |  |  | 118 |  |  | 144 |  |  | 262
Total pension adjustments, |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| net of income tax |  |  | 4 |  |  | 9 |  |  | 13 |  |  | 2 |  |  | 5 |  |  | 7
Total change in fair value of derivatives, |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| net of income tax |  |  | 23 |  |  | (9) |  |  | 14 |  |  | (13) |  |  | 3 |  |  | (10)
Capital contributions from noncontrolling interests |  |  | - |  |  | 12 |  |  | 12 |  |  | - |  |  | 3 |  |  | 3
Distributions to noncontrolling interests |  |  | - |  |  | (507) |  |  | (507) |  |  | - |  |  | (679) |  |  | (679)
Disposition of businesses |  |  | - |  |  | (37) |  |  | (37) |  |  | - |  |  | (2) |  |  | (2)
Acquisition of treasury stock |  |  | (231) |  |  | - |  |  | (231) |  |  | (98) |  |  | - |  |  | (98)
Issuance and exercise of stock-based compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| benefit plans, net of income tax |  |  | 34 |  |  | - |  |  | 34 |  |  | 33 |  |  | - |  |  | 33
Acquisition of subsidiary shares from |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| noncontrolling interests |  |  | - |  |  | (4) |  |  | (4) |  |  | - |  |  | - |  |  | -
Balance at June 30 |  | $ | 6,123 |  | $ | 3,378 |  | $ | 9,501 |  | $ | 6,911 |  | $ | 3,926 |  | $ | 10,837
Components Of Accumulated Other Comprehensive Income |
|  |  | June 30, |  | December 31,
|  |  | 2012 |  | 2011
|  |  | (in millions)
| Foreign currency translation adjustment |  | $ | 2,101 |  | $ | 1,967
| Unrealized derivative losses, net |  |  | 511 |  |  | 534
| Unfunded pension obligation |  |  | 253 |  |  | 257
| Accumulated other comprehensive loss |  | $ | 2,865 |  | $ | 2,758

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- Definition Tabular disclosure of changes in the separate accounts comprising stockholders' equity (in addition to retained earnings) and of the changes in the number of shares of equity securities during at least the most recent annual fiscal period and any subsequent interim period presented is required to make the financial statements sufficiently informative if both financial position and results of operations are presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 505 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
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