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Stockholders' Equity - Other Comprehensive Income (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Before Tax |  |  |  |
Net unrealized gains (losses) on securities available for sale | $ 3,033 | $ (2,780) | $ 1,674 | $ (2,684)
Net unrealized gains (losses) on hedging relationships | 1,412 | (342) | 894 | (372)
Foreign currency translation adjustments | 2 | (2) | 8 | 8
Other |  |  | 1 | 0
Other comprehensive income (loss) | 4,447 | (3,124) | 2,577 | (3,048)
Provision (Benefit) |  |  |  |
Net unrealized gains (losses) on securities available for sale | 733 | (672) | 402 | (650)
Net unrealized gains (losses) on hedging relationships | 343 | (83) | 217 | (90)
Foreign currency translation adjustments | (43) | 37 | (23) | 0
Other |  |  | 0 | 0
Other comprehensive income (loss) | 1,033 | (718) | 596 | (740)
After Tax |  |  |  |
Net unrealized gains (losses) on securities available for sale | 2,300 | (2,108) | 1,272 | (2,034)
Net unrealized gains (losses) on hedging relationships | 1,069 | (259) | 677 | (282)
Foreign currency translation adjustments | 45 | (39) | 31 | 8
Other | 0 | 0 | 1 | 0
Other comprehensive income (loss), net of tax | $ 3,414 | $ (2,406) | $ 1,981 | $ (2,308)

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