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, 2018
Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonperforming loans and leases $ 4,944 $ 6,470
Accruing past due 90 days or more $ 3,230 $ 4,415
Threshold period past due for nonperforming status of financing receivables 90 days 90 days
Residential Mortgage    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Accruing past due 90 days or more $ 498 $ 1,000
Residential Mortgage | Federal Housing Administration    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonperforming loans and leases 1,400 2,200
Consumer Portfolio Segment    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonperforming loans and leases 3,842 5,166
Accruing past due 90 days or more 2,916 4,170
Consumer real estate | Core Portfolio Residential Mortgage    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonperforming loans and leases 1,010 1,087
Accruing past due 90 days or more 274 417
Consumer real estate | Core Portfolio Home Equity    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonperforming loans and leases 955 1,079
Accruing past due 90 days or more 0 0
Consumer real estate | Non-core Residential Mortgage    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonperforming loans and leases 883 1,389
Accruing past due 90 days or more 1,610 2,813
Consumer real estate | Non-core Home Equity    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonperforming loans and leases 938 1,565
Accruing past due 90 days or more $ 0 0
Consumer real estate | Residential Mortgage    
Financing Receivable, Recorded Investment, 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, Recorded Investment, Past Due [Line Items]    
Accruing past due 90 days or more $ 994 900
Credit card and other consumer | Direct/Indirect Consumer    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonperforming loans and leases 56 46
Accruing past due 90 days or more 38 40
Commercial Portfolio Segment    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonperforming loans and leases 1,102 1,304
Accruing past due 90 days or more $ 314 245
Threshold period past due for nonperforming status of financing receivables 90 days  
Commercial Portfolio Segment | United States    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonperforming loans and leases $ 794 814
Accruing past due 90 days or more 197 144
Commercial Portfolio Segment | Non United States    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonperforming loans and leases 80 299
Accruing past due 90 days or more 0 3
Commercial Portfolio Segment | Commercial Real Estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonperforming loans and leases 156 112
Accruing past due 90 days or more 4 4
Commercial Portfolio Segment | Commercial Lease Financing    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonperforming loans and leases 18 24
Accruing past due 90 days or more 29 19
Commercial Portfolio Segment | Small Business Commercial    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonperforming loans and leases 54 55
Accruing past due 90 days or more $ 84 $ 75