Securities - Gains and Losses on Sales of AFS Debt Securities (Details) - USD ($) $ in Millions |
12 Months Ended | ||
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Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract] | |||
| Gross gains | $ 49 | $ 423 | $ 336 |
| Gross losses | (27) | (12) | (119) |
| Net gains on sales of AFS debt securities | 22 | 411 | 217 |
| Income tax expense attributable to realized net gains on sales of AFS debt securities | $ 5 | $ 103 | $ 54 |
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- Definition Debt Securities, Available-for-sale, Realized Gain (Loss), Income Tax Expense No definition available.
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- References No definition available.
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- Definition Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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