Quarterly report pursuant to Section 13 or 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
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total modifications $ 599 $ 513 $ 914 $ 730
Modifications under government programs        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total modifications 0 1 0 3
Modifications under proprietary programs        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total modifications 536 479 816 665
Loans discharged in Chapter 7 bankruptcy        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total modifications 4 12 8 22
Trial modifications        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total modifications $ 59 $ 21 $ 90 $ 40