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Schedule II (Condensed Statements Of Operations) (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Condensed Income Statements, Captions [Line Items] |  |  |
Net gains (losses) on financial instruments at fair value and foreign exchange | $ (24) | $ 84 | $ 63
Net investment losses related to other-than-temporary impairments: |  |  |
Net investment losses related to other-than-temporary impairments | (106) | (5) | (13)
Net gains (losses) on extinguishment of debt | 28 | 5 | (1)
Other net realized gains (losses) | 31 | (282) | 17
Total revenues | 433 | 294 | 853
Interest | 197 | 197 | 199
Provision (benefit) for income taxes | 944 | (1) | 109
Net income (loss) | (1,605) | (338) | 180
Parent Company [Member] |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |
Net investment income | 35 | 29 | 35
Net gains (losses) on financial instruments at fair value and foreign exchange | (34) | (13) | 59
Net investment losses related to other-than-temporary impairments: |  |  |
Investment losses related to other-than-temporary impairments | 0 | (1) | (3)
Other-than-temporary impairments recognized in accumulated other comprehensive income (loss) | 0 | 0 | (1)
Net investment losses related to other-than-temporary impairments | 0 | (1) | (4)
Net gains (losses) on extinguishment of debt | 28 | 5 | 0
Other net realized gains (losses) | (3) | (5) | 21
Total revenues | 26 | 15 | 111
Operating | 13 | 16 | 24
Interest | 87 | 90 | 95
Total expenses | 100 | 106 | 119
Gain (loss) before income taxes and equity in earnings of subsidiaries | (74) | (91) | (8)
Provision (benefit) for income taxes | 507 | (15) | 1
Gain (loss) before equity in earnings of subsidiaries | (581) | (76) | (9)
Equity in net income (loss) of subsidiaries | (1,024) | (262) | 189
Net income (loss) | $ (1,605) | $ (338) | $ 180

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