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Stockholders' Equity - Components of Other Comprehensive Income Loss and Related Tax Impact (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Before Tax |  |
Net unrealized gains (losses) on securities available for sale | $ 1,610 | $ 384
Net unrealized gains (losses) on hedging relationships | 1,808 | 365
Foreign currency translation adjustments | (21) | 19
Net changes in securities held to maturity | 0 | 7
Other | 0 | (2)
Other comprehensive income (loss), before tax | 3,397 | 773
Provision (Benefit) |  |
Net unrealized gains (losses) on securities available for sale | 386 | 92
Net unrealized gains (losses) on hedging relationships | 434 | 88
Foreign currency translation adjustments | 46 | (11)
Net changes in securities held to maturity | 0 | 1
Other | 0 | 0
Other comprehensive income (loss), provision (benefit) | 866 | 170
After Tax |  |
Net unrealized gains (losses) on securities available for sale | 1,224 | 292
Net unrealized gains (losses) on hedging relationships | 1,374 | 277
Foreign currency translation adjustments | (67) | 30
Net changes in securities held to maturity | 0 | 6
Other | 0 | (2)
Other comprehensive income, net of tax | $ 2,531 | $ 603

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