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Schedule I - Condensed Financial Information of Parent Schedule I - Condensed Financial Information of Parent (Statement of Operations) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  |  |  |  |  |  |  | $ 524 | $ 365 | $ 275 |
General and administrative expenses |  |  |  |  |  |  |  |  | (196) | (187) | (220) |
Other income |  |  |  |  |  |  |  |  | 83 | 124 | 125 |
Other expense |  |  |  |  |  |  |  |  | (65) | (68) | (76) |
Loss on extinguishment of debt |  |  |  |  |  |  |  |  | (186) | (261) | (229) |
Interest expense |  |  |  |  |  |  |  |  | (1,436) | (1,471) | (1,482) |
Income tax benefit |  |  |  |  |  |  |  |  | (465) | (419) | (343) |
NET INCOME ATTRIBUTABLE TO THE AES CORPORATION | $ (85) | $ 180 | $ 69 | $ 142 | $ 206 | $ 488 | $ 133 | $ (58) | 306 | 769 | $ 114 |
Parent Company |  |  |  |  |  |  |  |  |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue from subsidiaries and affiliates |  |  |  |  |  |  |  |  | 24 | 29 |  | $ 32
Equity in earnings of subsidiaries and affiliates |  |  |  |  |  |  |  |  | 859 | 1,313 |  | 498
Interest income |  |  |  |  |  |  |  |  | 24 | 59 |  | 66
General and administrative expenses |  |  |  |  |  |  |  |  | (154) | (161) |  | (171)
Other income |  |  |  |  |  |  |  |  | 24 | 8 |  | 14
Other expense |  |  |  |  |  |  |  |  | (6) | (30) |  | (11)
Loss on extinguishment of debt |  |  |  |  |  |  |  |  | (105) | (193) |  | (165)
Interest expense |  |  |  |  |  |  |  |  | (364) | (422) |  | (436)
Income (loss) before income taxes |  |  |  |  |  |  |  |  | 302 | 603 |  | (173)
Income tax benefit |  |  |  |  |  |  |  |  | 4 | 166 |  | 287
NET INCOME ATTRIBUTABLE TO THE AES CORPORATION |  |  |  |  |  |  |  |  | $ 306 | $ 769 |  | $ 114

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