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Accumulated Other Comprehensive Income (Details Of The Reclassification From AOCI) (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Net gains (losses) on financial instruments at fair value and foreign exchange | $ (55) | $ 57 | $ 20 | $ 63
Income (loss) before income taxes | (55) | 148 | 150 | 607
Provision (benefit) for income taxes | (20) | (25) | 52 | 58
Net income (loss) | (35) | 173 | 98 | 549
Amounts reclassified from AOCI [Member] |  |  |  |
Net income (loss) | (7) | 0 | (9) | (18)
Unrealized gains (losses) on AFS, net [Member] | Amounts reclassified from AOCI [Member] |  |  |  |
Net gains (losses) on financial instruments at fair value and foreign exchange | (5) | 0 | (6) | (20)
Other-than-temporary impairments recognized in accumulated other comprehensive income (loss) | (3) | 0 | (3) | 0
Net investment income | (1) | 0 | (4) | (2)
Income (loss) before income taxes | (9) | 0 | (13) | (22)
Provision (benefit) for income taxes | (2) | 0 | (4) | (8)
Net income (loss) | (7) | 0 | (9) | (14)
Foreign currency translation, net [Member] | Amounts reclassified from AOCI [Member] |  |  |  |
Net gains (losses) on financial instruments at fair value and foreign exchange | $ 0 | $ 0 | $ 0 | $ (4)

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