Quarterly report pursuant to Section 13 or 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
Mar. 31, 2024
Dec. 31, 2023
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases $ 5,883 $ 5,485
Accruing past due 90 days or more $ 1,872 $ 1,756
Nonperforming loans and leases, percent outstanding 0.56% 0.52%
Accruing past due 90 days or more, percent outstanding 0.18% 0.17%
Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases $ 2,697 $ 2,712
Accruing past due 90 days or more 1,531 1,478
Consumer Portfolio Segment | Residential Mortgage    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 2,112 2,114
Accruing past due 90 days or more 230 252
Consumer Portfolio Segment | Residential Mortgage With No Related Allowance    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 2,052 1,974
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 438 450
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 404 375
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 1,299 1,224
Consumer Portfolio Segment | Direct/indirect consumer    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 147 148
Accruing past due 90 days or more 2 2
Commercial    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 3,186 2,773
Accruing past due 90 days or more 341 278
Commercial | United States    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 720 636
Accruing past due 90 days or more 106 51
Commercial | Non United States    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 157 175
Accruing past due 90 days or more 11 4
Commercial | Commercial real estate    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 2,273 1,927
Accruing past due 90 days or more 12 32
Commercial | Commercial lease financing    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 16 19
Accruing past due 90 days or more 13 7
Commercial | U.S. small business commercial | United States    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 20 16
Accruing past due 90 days or more 199 184
Nonperforming Loans | Residential Mortgage    
Financing Receivable, Past Due [Line Items]    
Nonperforming Loans and Leases 140 156
Accruing past due 90 days or more $ 90 $ 96