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Equity (Reclassifications Out of AOCL) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-regulated revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 7,835 |  | $ 8,187 | $ 7,399
Non-regulated cost of sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (5,807) |  | (5,987) | (5,733)
General and administrative expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 220 |  | 274 | 346
Regulated cost of sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (6,837) |  | (7,594) | (6,325)
Interest expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,482) |  | (1,544) | (1,530)
Interest income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 275 |  | 348 | 398
Gain on sale of investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 26 |  | 219 | 8
Foreign currency transaction losses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (22) |  | (170) | (32)
Total |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,048 |  | 230 | 2,260
Income tax expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (343) |  | (685) | (656)
Net equity in earnings (losses) of affiliates |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25 |  | 35 | (2)
INCOME (LOSS) FROM CONTINUING OPERATIONS | (173) | [1] | 341 | [1] | 332 | [1] | 230 | [1] | 355 | [2] | (1,429) | [2] | 150 | [2] | 504 | [2] | 730 |  | (420) | 1,602
Income from continuing operations attributable to noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (446) |  | (540) | (1,096)
Net loss from disposal and impairments of discontinued businesses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (152) |  | 16 | 86
NET INCOME (LOSS) ATTRIBUTABLE TO THE AES CORPORATION | (206) |  | 71 |  | 167 |  | 82 |  | 175 |  | (1,568) |  | 140 |  | 341 |  | 114 |  | (912) | 58
Reclassification out of Accumulated Other Comprehensive Income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
NET INCOME (LOSS) ATTRIBUTABLE TO THE AES CORPORATION |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (178) | [3] |  |
Reclassification out of Accumulated Other Comprehensive Income | Unrealized derivative losses, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-regulated revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (3) | [3] |  |
Non-regulated cost of sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (7) | [3] |  |
Interest expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (137) | [3] |  |
Gain on sale of investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (21) | [3] |  |
Foreign currency transaction losses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (6) | [3] |  |
Total |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (174) | [3] |  |
Income tax expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 41 | [3] |  |
Net equity in earnings (losses) of affiliates |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (6) | [3] |  |
INCOME (LOSS) FROM CONTINUING OPERATIONS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (139) | [3] |  |
Income from continuing operations attributable to noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11 | [3] |  |
NET INCOME (LOSS) ATTRIBUTABLE TO THE AES CORPORATION |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (128) | [3] |  |
Reclassification out of Accumulated Other Comprehensive Income | Unfunded pension obligations, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-regulated cost of sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (4) | [3] |  |
General and administrative expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1) | [3] |  |
Regulated cost of sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (73) | [3] |  |
Total |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (78) | [3] |  |
Income tax expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 26 | [3] |  |
INCOME (LOSS) FROM CONTINUING OPERATIONS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (52) | [3] |  |
Income from continuing operations attributable to noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 39 | [3] |  |
NET INCOME (LOSS) ATTRIBUTABLE TO THE AES CORPORATION |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (13) | [3] |  |
Reclassification out of Accumulated Other Comprehensive Income | Available for sale securities, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1) | [3] |  |
NET INCOME (LOSS) ATTRIBUTABLE TO THE AES CORPORATION |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1) | [3] |  |
Reclassification out of Accumulated Other Comprehensive Income | Foreign currency translation adjustment, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on sale of investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1) | [3] |  |
Net loss from disposal and impairments of discontinued businesses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (35) | [3] |  |
NET INCOME (LOSS) ATTRIBUTABLE TO THE AES CORPORATION |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (36) | [3] |  |
[1] | Includes pretax impairment expense of $48 million, $0 million, $74 million and $467 million, for the first, second, third and fourth quarters of 2013, respectively. See Note 21—Asset Impairment Expense and Note 10—Goodwill and Other Intangible Assets for further discussion.
[2] | Includes pretax impairment expense of $10 million, $18 million, $1.9 billion and $(31) million, for the first, second, third and fourth quarters of 2012, respectively. See Note 21—Asset Impairment Expense and Note 10—Goodwill and Other Intangible Assets for further discussion.
[3] | Amounts in parentheses indicate debits to the consolidated statement of operations.

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