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Schedule II (Condensed Statements Of Comprehensive Income (Loss)) (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Net income (loss) | $ (296) | $ (1,605) | $ (338)
Unrealized gains (losses) on available-for-sale securities: [Abstract] |  |  |
Unrealized gains (losses) arising during the period | (60) | (22) | 28
Provision (benefit) for income taxes | 5 | (1) | 7
Total | (65) | (21) | 21
Reclassification adjustments for (gains) losses included in net income (loss) | (5) | 2 | (1)
Provision (benefit) for income taxes | 0 | 0 | 1
Total | (5) | 2 | (2)
Available-for-sale securities with other-than-temporary impairments: [Abstract] |  |  |
Other-than-temporary impairments and unrealized gains (losses) arising during the period | 41 | (3) | 10
Provision (benefit) for income taxes | 0 | 0 | 4
Total | 41 | (3) | 6
Reclassification adjustments for (gains) losses included in net income (loss) | 5 | 7 | 4
Provision (benefit) for income taxes | 0 | 1 | 1
Total | 5 | 6 | 3
Foreign currency translation: [Abstract] |  |  |
Foreign currency translation gains (losses) | 2 | 146 | (94)
Provision (benefit) for income taxes | 0 | 21 | 1
Foreign currency translation gains (losses) | 2 | 125 | (95)
Total other comprehensive income (loss) | 30 | 109 | (67)
Comprehensive income (loss) | (266) | (1,496) | (405)
Parent Company [Member] |  |  |
Net income (loss) | $ (296) | $ (1,605) | $ (338)

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