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Selected Quarterly Financial Data (Tables) | 12 Months Ended
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Dec. 31, 2011
Selected Quarterly Financial Data Tables [Abstract] |
Schedule of Quarterly Financial Information [Table Text Block] |
|  |  | Quarter Ended 2011
|  |  | Mar 31 |  | June 30 |  | Sept 30 |  | Dec 31(1)
|  |  | (in millions, except per share data)
Revenue |  | $ | 4,156 |  | $ | 4,435 |  | $ | 4,307 |  | $ | 4,230
Gross margin |  |  | 993 |  |  | 992 |  |  | 1,010 |  |  | 1,075
Income from continuing operations, net of tax (2) |  |  | 490 |  |  | 436 |  |  | 203 |  |  | 405
Discontinued operations, net of tax |  |  | (7) |  |  | (9) |  |  | (28) |  |  | 40
Net income |  | $ | 483 |  | $ | 427 |  | $ | 175 |  | $ | 445
Net income (loss) attributable to The AES Corporation |  | $ | 224 |  | $ | 174 |  | $ | (131) |  | $ | (209)
Basic income (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations attributable to |  |  |  |  |  |  |  |  |  |  |  |
| The AES Corporation, net of tax |  | $ | 0.30 |  | $ | 0.24 |  | $ | (0.09) |  | $ | 0.12
Discontinued operations attributable to |  |  |  |  |  |  |  |  |  |  |  |
| The AES Corporation, net of tax |  |  | (0.02) |  |  | (0.02) |  |  | (0.08) |  |  | (0.39)
Basic income (loss) per share attributable to |  |  |  |  |  |  |  |  |  |  |  |
| The AES Corporation |  | $ | 0.28 |  | $ | 0.22 |  | $ | (0.17) |  | $ | (0.27)
Diluted income (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations attributable to |  |  |  |  |  |  |  |  |  |  |  |
| The AES Corporation, net of tax |  | $ | 0.30 |  | $ | 0.24 |  | $ | (0.09) |  | $ | 0.12
Discontinued operations attributable to |  |  |  |  |  |  |  |  |  |  |  |
| The AES Corporation, net of tax |  |  | (0.02) |  |  | (0.02) |  |  | (0.08) |  |  | (0.39)
Diluted income (loss) per share attributable to |  |  |  |  |  |  |  |  |  |  |  |
| The AES Corporation |  | $ | 0.28 |  | $ | 0.22 |  | $ | (0.17) |  | $ | (0.27)
|  |  | Quarter Ended 2010
|  |  | Mar 31 |  | June 30 |  | Sept 30 |  | Dec 31
|  |  | (in millions, except per share data)
Revenue |  | $ | 3,805 |  | $ | 3,803 |  | $ | 3,885 |  | $ | 4,192
Gross margin |  |  | 943 |  |  | 976 |  |  | 944 |  |  | 1,008
Income from continuing operations, net of tax (3) |  |  | 379 |  |  | 423 |  |  | 281 |  |  | 378
Discontinued operations, net of tax |  |  | 23 |  |  | 6 |  |  | 116 |  |  | (547)
Net income |  | $ | 402 |  | $ | 429 |  | $ | 397 |  | $ | (169)
Net income (loss) attributable to The AES Corporation |  | $ | 187 |  | $ | 144 |  | $ | 114 |  | $ | (436)
Basic income (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations attributable to |  |  |  |  |  |  |  |  |  |  |  |
| The AES Corporation, net of tax |  | $ | 0.25 |  | $ | 0.19 |  | $ | 0.04 |  | $ | 0.15
Discontinued operations attributable to |  |  |  |  |  |  |  |  |  |  |  |
| The AES Corporation, net of tax |  |  | 0.02 |  |  | (0.01) |  |  | 0.10 |  |  | (0.70)
Basic income (loss) per share attributable to |  |  |  |  |  |  |  |  |  |  |  |
| The AES Corporation |  | $ | 0.27 |  | $ | 0.18 |  | $ | 0.14 |  | $ | (0.55)
Diluted income (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations attributable to |  |  |  |  |  |  |  |  |  |  |  |
| The AES Corporation, net of tax |  | $ | 0.25 |  | $ | 0.19 |  | $ | 0.04 |  | $ | 0.15
Discontinued operations attributable to |  |  |  |  |  |  |  |  |  |  |  |
| The AES Corporation, net of tax |  |  | 0.02 |  |  | (0.01) |  |  | 0.10 |  |  | (0.70)
Diluted income (loss) per share attributable to |  |  |  |  |  |  |  |  |  |  |  |
| The AES Corporation |  | $ | 0.27 |  | $ | 0.18 |  | $ | 0.14 |  | $ | (0.55)

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- Definition Tabular disclosure of the quarterly financial data in the annual financial statements. The disclosure includes financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 270 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (a)-(j) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6952194&loc=d3e1280-108306 + Details
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