Securities - Gross Realized Gains (Losses) on Sales of Available For Sale Debt Securities (Details) - USD ($) $ in Millions |
12 Months Ended | ||
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Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
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| Investments, Debt and Equity Securities [Abstract] | |||
| Gross gains | $ 1,251 | $ 49 | $ 423 |
| Gross losses | (1,219) | (27) | (12) |
| Net gains on sales of AFS debt securities | 32 | 22 | 411 |
| Income tax expense attributable to realized net gains on sales of AFS debt securities | $ 8 | $ 5 | $ 103 |
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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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- References No definition available.
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- Definition Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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