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Equity (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2011
Equity Tables [Abstract] |
Components Of Accumulated Other Comprehensive Income |
|  | December 31,
|  | 2011 |  | 2010
|  | (in millions)
Foreign currency translation adjustment |  | $ | 1,967 |  | $ | 1,824
Unrealized derivative losses, net |  |  | 534 |  |  | 344
Unfunded pension obligations |  |  | 257 |  |  | 216
Unrealized (gain) loss on securities available for sale |  |  | - |  |  | (1)
Total |  | $ | 2,758 |  | $ | 2,383
Schedule Of Net Income Attributable To Parent And Transfers To From Noncontrolling Interests [Text Block] |
|  |  |  |  | December 31,
|  |  |  |  | 2011 |  | 2010
|  |  |  |  | (in millions)
Net income attributable to The AES Corporation |  | $ | 58 |  | $ | 9
| Transfers (to) from the noncontrolling interests: |  |  |  |  |  |
|  | Net increase in The AES Corporation's paid-in capital for sale of subsidiary shares |  |  | 19 |  |  | -
|  | Decrease in The AES Corporation's paid-in capital for purchase of subsidiary shares |  |  | - |  |  | (25)
| Net transfers (to) from noncontrolling interest |  |  | 19 |  |  | (25)
Change from net income attributable to The AES Corporation and transfers (to) from |  |  |  |  |  |
| noncontrolling interests |  | $ | 77 |  | $ | (16)

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