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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, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Income (loss) before income taxes | $ 89 | $ (45) | $ (137) | $ (287)
Net income (loss) | 71 | (45) | (116) | (289)
Amounts reclassified from AOCI [Member] |  |  |  |
Net income (loss) | 31 | 0 | (6) | 0
Unrealized gains (losses) on AFS, net [Member] | Amounts reclassified from AOCI [Member] |  |  |  |
Net gains (losses) on financial instruments at fair value and foreign exchange | (7) | 2 | 16 | 4
Net investment losses related to OTTI | 42 | (2) | 5 | (3)
Net investment income | (1) | 0 | (1) | (1)
Income (loss) before income taxes | 34 | 0 | 20 | 0
Instrument-specific credit risk of liabilities measured at fair value, net [Member] | Amounts reclassified from AOCI [Member] |  |  |  |
Net gains (losses) on financial instruments at fair value and foreign exchange | $ (3) | $ 0 | $ (26) | $ 0

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