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Fair Value of Assets and Liabilities - Gains/(losses) on Nonrecurring Fair Value Measurements (Details) - Non Recurring - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Net gains/(losses),loans and leases | $ (15) | $ (6) | $ (29) | $ (7)
Net gains/(losses), other assets | (1) | (4) | (5) | (8)
Gains (losses) on financial assets measured on non-recurring basis | (17) | (12) | (36) | (19)
SBAs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Net gains/(losses), loans held for sale - SBAs and USDA | $ (1) | $ (2) | $ (2) | $ (4)

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- Definition Net Gains Loss On Financial Assets Measured On Nonrecurring Basis + References No definition available. + Details
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- Definition Net gains or losses recognized in earnings on loans held for sale measured at fair value on a nonrecurring basis. + References No definition available. + Details
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- Definition Net gains or losses recognized in earnings on loans measured at fair value (based on the appraised value of collateral) on a nonrecurring basis. Write-downs on these loans are recognized as part of provision. + References No definition available. + Details
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- Definition Write-downs of low income housing investments to estimated fair value based on the value of the associated tax credits. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-3 + Details
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