Annual report pursuant to Section 13 and 15(d)

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

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Outstanding Loans and Leases - Nonperforming, Credit Quality (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases $ 3,552 $ 4,944
Accruing past due 90 days or more $ 2,413 $ 3,230
Threshold period past due for nonperforming status of financing receivables 90 days 90 days
Residential Mortgage    
Financing Receivable, Past Due [Line Items]    
Accruing past due 90 days or more $ 348 $ 498
Residential Mortgage | Federal Housing Administration    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 740 1,400
Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 2,053 3,842
Accruing past due 90 days or more 2,163 2,916
Consumer real estate | Core Portfolio Residential Mortgage    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 883 1,010
Accruing past due 90 days or more 176 274
Consumer real estate | Core Portfolio Home Equity    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 363 955
Accruing past due 90 days or more 0 0
Consumer real estate | Non-core Residential Mortgage    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 587 883
Accruing past due 90 days or more 912 1,610
Consumer real estate | Non-core Home Equity    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 173 938
Accruing past due 90 days or more $ 0 0
Consumer real estate | Residential Mortgage    
Financing Receivable, Past Due [Line Items]    
Threshold period past due for nonperforming status of financing receivables 90 days  
Credit card and other consumer | Credit Card Receivable | United States    
Financing Receivable, Past Due [Line Items]    
Accruing past due 90 days or more $ 1,042 994
Credit card and other consumer | Direct/Indirect Consumer    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 47 56
Accruing past due 90 days or more 33 38
Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 1,499 1,102
Accruing past due 90 days or more $ 250 314
Threshold period past due for nonperforming status of financing receivables 90 days  
Commercial Portfolio Segment | United States    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases $ 1,094 794
Accruing past due 90 days or more 106 197
Commercial Portfolio Segment | Non United States    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 43 80
Accruing past due 90 days or more 8 0
Commercial Portfolio Segment | Commercial Real Estate    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 280 156
Accruing past due 90 days or more 19 4
Commercial Portfolio Segment | Commercial Lease Financing    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 32 18
Accruing past due 90 days or more 20 29
Commercial Portfolio Segment | Small Business Commercial    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 50 54
Accruing past due 90 days or more $ 97 $ 84