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Stockholders' Equity - Components of Other Comprehensive Income Loss and Related Tax Impact (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Before Tax |  |  |
Net unrealized gains (losses) on securities available for sale | $ 855 | $ (605) | $ 23
Net changes in securities held to maturity | 36 | 588 | 150
Net unrealized gains (losses) on hedging relationships | 1,016 | (98) | (325)
Foreign currency translation adjustments | 54 | 9 | 3
Other | 17 | (15) | 38
Other comprehensive income (loss), before tax | 1,978 | (121) | (111)
Provision (Benefit) |  |  |
Net unrealized gains (losses) on securities available for sale | 205 | (146) | 2
Net changes in securities held to maturity | 10 | 141 | 53
Net unrealized gains (losses) on hedging relationships | 244 | (24) | (122)
Foreign currency translation adjustments | (16) | 48 | (81)
Other | 4 | (4) | 14
Other comprehensive income (loss), provision (benefit) | 447 | 15 | (134)
After Tax |  |  |
Net unrealized gains (losses) on securities available for sale | 650 | (459) | 21
Net changes in securities held to maturity | 26 | 447 | 97
Net unrealized gains (losses) on hedging relationships | 772 | (74) | (203)
Foreign currency translation adjustments | 70 | (39) | 84
Other | 13 | (11) | 24
Other comprehensive income (loss), net of tax | $ 1,531 | $ (136) | $ 23

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