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Income Taxes (Income Taxes and Shareholders' Equity) (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Current taxes: |  |  |
Federal | $ 0 | $ 0 | $ 4
State | 2 | 1 | 0
Deferred taxes: |  |  |
Federal | 0 | (1) | 945
Foreign | 0 | 0 | (5)
Provision (benefit) for income taxes | 2 | 0 | 944
Income taxes charged (credited) to shareholders' equity related to: |  |  |
Change in unrealized gains (losses) on AFS securities | 0 | 5 | (1)
Change in AFS securities with OTTI | 0 | 0 | 1
Change in foreign currency translation | 0 | 0 | 21
Total income taxes charged (credited) to shareholders' equity | 0 | 5 | 21
Total effect of income taxes | $ 2 | $ 5 | $ 965

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