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Equity (Tables) | 3 Months Ended
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Mar. 31, 2013
Equity Tables [Abstract] |
Schedule of Stockholders Equity [Table Text Block] |
|  |  | Three Months Ended March 31, 2013 |  | Three Months Ended March 31, 2012
|  |  | 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 |  | $ | 4,569 |  | $ | 2,945 |  | $ | 7,514 |  | $ | 5,946 |  | $ | 3,783 |  | $ | 9,729
Net income |  |  | 82 |  |  | 117 |  |  | 199 |  |  | 341 |  |  | 174 |  |  | 515
Total foreign currency translation adjustment, |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| net of income tax |  |  | (42) |  |  | 7 |  |  | (35) |  |  | 92 |  |  | 49 |  |  | 141
Total change in derivative fair value, |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| net of income tax |  |  | 7 |  |  | 1 |  |  | 8 |  |  | 90 |  |  | 17 |  |  | 107
Total pension adjustments, |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| net of income tax |  |  | 3 |  |  | 11 |  |  | 14 |  |  | 1 |  |  | 5 |  |  | 6
Capital contributions from noncontrolling interests |  |  | - |  |  | 55 |  |  | 55 |  |  | - |  |  | 6 |  |  | 6
Distributions to noncontrolling interests |  |  | - |  |  | (27) |  |  | (27) |  |  | - |  |  | (14) |  |  | (14)
Disposition of businesses |  |  | - |  |  | - |  |  | - |  |  | - |  |  | (37) |  |  | (37)
Issuance and exercise of stock-based compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| benefit plans, net of income tax |  |  | 14 |  |  | - |  |  | 14 |  |  | 19 |  |  | - |  |  | 19
Acquisition of subsidiary shares from |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| noncontrolling interests |  |  | - |  |  | (1) |  |  | (1) |  |  | - |  |  | (1) |  |  | (1)
Balance at March 31 |  | $ | 4,633 |  | $ | 3,108 |  | $ | 7,741 |  | $ | 6,489 |  | $ | 3,982 |  | $ | 10,471
Components Of Accumulated Other Comprehensive Income |
|  |  | Unrealized derivative losses, net |  | Unfunded pension obligations, net |  | Foreign currency translation adjustment, net |  | Total
|  |  |  | (in millions)
Balance at January 1 |  | $ | (481) |  | $ | (382) |  | $ | (2,057) |  | $ | (2,920)
| Other comprehensive income before reclassifications |  |  | (15) |  |  | - |  |  | (39) |  |  | (54)
| Amounts reclassified from accumulated other |  |  |  |  |  |  |  |  |  |  |  |
| comprehensive loss |  |  | 22 |  |  | 3 |  |  | (3) |  |  | 22
| Net current-period other comprehensive income |  |  | 7 |  |  | 3 |  |  | (42) |  |  | (32)
Balance at March 31 |  | $ | (474) |  | $ | (379) |  | $ | (2,099) |  | $ | (2,952)
Schedule Of Amounts Reclassified Out Of Accumulated Other Comprehensive Income [Table Text Block] |
Details About Accumulated Other Comprehensive Loss Components | Affected Line Item in the Condensed Consolidated Statement of Operations |  | Three Months Ended March 31, 2013 (1)
|  |  | (in millions)
Unrealized derivative losses, net |  |
| Interest expense | $ | (35)
| Foreign currency transaction gains (losses) |  | 7
| Non-regulated cost of sales |  | (1)
| Income from continuing operations before |  |
| taxes and equity in earnings of affiliates |  | (29)
| Income tax expense |  | 7
| Net equity in earnings of affiliates |  | (2)
| Income from continuing operations |  | (24)
| Income from continuing operations attributable |  |
| to noncontrolling interests |  | 2
| Net income attributable to the AES Corporation | $ | (22)
Amortization of defined benefit pension actuarial loss, net |  |
| Non-regulated cost of sales | $ | (1)
| Regulated cost of sales |  | (20)
| Income from continuing operations before |  |
| taxes and equity in earnings of affiliates |  | (21)
| Income tax expense |  | 7
| Income from continuing operations |  | (14)
| Income from continuing operations attributable |  |
| to noncontrolling interests |  | 11
| Net income attributable to the AES Corporation | $ | (3)
Foreign currency translation adjustment, net |  |
| Gain on sale of investment | $ | 3
| Net income attributable to the AES Corporation | $ | 3
Total reclassifications for the period, net of income tax and noncontrolling interests | $ | (22)

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