Annual report pursuant to Section 13 and 15(d)

Outstanding Loans and Leases and Allowance for Credit Losses - Nonperforming, Credit Quality (Details)

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Outstanding Loans and Leases and Allowance for Credit Losses - Nonperforming, Credit Quality (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases $ 5,485 $ 3,808
Accruing past due 90 days or more $ 1,756 $ 1,711
Nonperforming loans and leases, percent outstanding 0.52% 0.37%
Accruing past due 90 days or more, percent outstanding 0.17% 0.16%
Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases $ 2,712 $ 2,754
Accruing past due 90 days or more 1,478 1,087
Consumer Portfolio Segment | Residential mortgage    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 2,114 2,167
Accruing past due 90 days or more 252 368
Consumer Portfolio Segment | Residential Mortgage With No Related Allowance    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 1,974 1,973
Accruing past due 90 days or more 0 0
Consumer Portfolio Segment | Home equity lines of credit    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 450 510
Accruing past due 90 days or more 0 0
Consumer Portfolio Segment | Home Equity Line of Credit No Related Allowance    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 375 393
Accruing past due 90 days or more 0 0
Consumer Portfolio Segment | Credit card    
Financing Receivable, Past Due [Line Items]    
Accruing past due 90 days or more 1,224 717
Consumer Portfolio Segment | Direct/indirect consumer    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 148 77
Accruing past due 90 days or more 2 2
Commercial    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 2,773 1,054
Accruing past due 90 days or more 278 624
Commercial | United States    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 636 553
Accruing past due 90 days or more 51 190
Commercial | Non United States    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 175 212
Accruing past due 90 days or more 4 25
Commercial | Commercial real estate    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 1,927 271
Accruing past due 90 days or more 32 46
Commercial | Commercial lease financing    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 19 4
Accruing past due 90 days or more 7 8
Commercial | U.S. small business commercial | United States    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 16 14
Accruing past due 90 days or more 184 355
Nonperforming Loans | Residential mortgage    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 156 260
Accruing past due 90 days or more $ 96 $ 108