Asset Quality - Post-Modification Outstanding Recorded Investment by Concession Type for Our Commercial Accruing and Nonaccruing TDRs (Details) $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 69
Total commercial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Extension of Maturity Date	36
Total	36
Total consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest rate reduction	13
Other	20
Total	$ 33

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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