Annual report pursuant to Section 13 and 15(d)

Outstanding Loans and Leases and Allowance for Credit Losses - Consumer Real Estate - Modification Programs (Details)

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Outstanding Loans and Leases and Allowance for Credit Losses - Consumer Real Estate - Modification Programs (Details) - Consumer real estate - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total modifications $ 1,206 $ 865 $ 715
Modifications under government programs      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total modifications 2 4 13
Modifications under proprietary programs      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total modifications 1,100 774 570
Loans discharged in Chapter 7 bankruptcy      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total modifications 14 33 53
Trial modifications      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total modifications $ 90 $ 54 $ 79