Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases - Nonperforming (Details)

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Outstanding Loans and Leases - Nonperforming (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Threshold period past due for nonperforming status of financing receivables     90 days   90 days
Loans and leases $ 903,153   $ 903,153   $ 896,983
Proceeds from sales     11,391 $ 11,662  
Purchased credit impaired loans sold 150 $ 401 324 987  
Nonperforming loans and leases 8,364   8,364   9,377
Accruing past due 90 days or more 6,601   6,601   8,250
Residential Mortgage          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Accruing past due 90 days or more 2,400   2,400   2,900
Federal Housing Administration | Residential Mortgage          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Nonperforming loans and leases 3,300   3,300   4,300
Nonperforming Financing Receivable          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Proceeds from sales 417 1,000 1,400 1,900  
Write-offs related to sales 5   45    
Recoveries related to sales   27   67  
Nonperforming Financing Receivable | Junior Lien Home Equity Financing Receivable          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 449   449   484
Consumer Portfolio Segment          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 451,887   451,887   456,169
Nonperforming loans and leases 6,705   6,705   8,165
Accruing past due 90 days or more 6,449   $ 6,449   8,057
Consumer Real Estate | Junior Lien Home Equity Financing Receivable          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Threshold period past due for nonperforming status of financing receivables     90 days    
Consumer Real Estate | Core Portfolio Residential Mortgage          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 146,100   $ 146,100   141,795
Nonperforming loans and leases 1,492   1,492   1,825
Accruing past due 90 days or more 455   455   382
Consumer Real Estate | Core Portfolio Home Equity          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 52,477   52,477   54,917
Nonperforming loans and leases 937   937   974
Accruing past due 90 days or more 0   0   0
Consumer Real Estate | Non-core Residential Mortgage          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 28,736   28,736   34,050
Nonperforming loans and leases 2,100   2,100   2,978
Accruing past due 90 days or more 5,204   5,204   6,768
Consumer Real Estate | Non-core Home Equity          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 14,989   14,989   16,412
Nonperforming loans and leases 2,148   2,148   2,363
Accruing past due 90 days or more 0   0   0
Credit card and other consumer | Credit Card Receivable | United States          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 88,103   88,103   89,602
Accruing past due 90 days or more 693   693   789
Credit card and other consumer | Credit Card Receivable | Non United States          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 9,380   9,380   9,975
Accruing past due 90 days or more 69   69   76
Credit card and other consumer | Direct/Indirect Consumer          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 92,746   92,746   88,795
Nonperforming loans and leases 27   27   24
Accruing past due 90 days or more 26   26   39
Credit card and other consumer | Other consumer          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 2,284   2,284   2,067
Nonperforming loans and leases 1   1   1
Accruing past due 90 days or more 2   $ 2   3
Commercial          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Threshold period past due for nonperforming status of financing receivables     90 days    
Loans and leases 451,266   $ 451,266   440,814
Nonperforming loans and leases 1,659   1,659   1,212
Accruing past due 90 days or more 152   152   193
Commercial | United States          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 263,467   263,467   252,771
Nonperforming loans and leases 1,349   1,349   867
Accruing past due 90 days or more 55   55   113
Commercial | Non United States          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 89,048   89,048   91,549
Nonperforming loans and leases 144   144   158
Accruing past due 90 days or more 1   1   1
Commercial | Commercial Real Estate          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 57,612   57,612   57,199
Nonperforming loans and leases 84   84   93
Accruing past due 90 days or more 6   6   3
Commercial | Commercial Real Estate | United States          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 54,300   54,300   53,600
Commercial | Commercial Real Estate | Non United States          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 3,300   3,300   3,500
Commercial | Commercial Lease Financing          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 21,203   21,203   21,352
Nonperforming loans and leases 13   13   12
Accruing past due 90 days or more 29   29   15
Commercial | Small Business Commercial          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Nonperforming loans and leases 69   69   82
Accruing past due 90 days or more 61   61   61
Commercial | Small Business Commercial | United States          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 13,120   13,120   12,876
Chapter Seven Bankruptcy          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 1,600   1,600    
Chapter Seven Bankruptcy | Nonperforming Financing Receivable          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 682   682    
Non-performing troubled debt with no change in repayment terms at time of discharge, current with contractual payments $ 402   $ 402    
Nonperforming loans discharged more than twelve months prior (more than) 82.00%   82.00%    
Nonperforming loans discharged more than twenty four months prior 67.00%   67.00%    
Noninterest income | Nonperforming Financing Receivable          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Gain (loss) on sale $ 13 $ 40 $ 44 $ 75  
90 Days or More Past Due          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due 10,385   10,385   13,020
90 Days or More Past Due | Consumer Portfolio Segment          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due 9,959   9,959   12,513
90 Days or More Past Due | Consumer Real Estate | Core Portfolio Residential Mortgage          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due 1,314   1,314   1,414
90 Days or More Past Due | Consumer Real Estate | Core Portfolio Home Equity          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due 474   474   579
90 Days or More Past Due | Consumer Real Estate | Non-core Residential Mortgage          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due 6,444   6,444   8,439
90 Days or More Past Due | Consumer Real Estate | Non-core Home Equity          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due 936   936   1,170
90 Days or More Past Due | Credit card and other consumer | Credit Card Receivable | United States          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due 693   693   789
90 Days or More Past Due | Credit card and other consumer | Credit Card Receivable | Non United States          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due 69   69   76
90 Days or More Past Due | Credit card and other consumer | Direct/Indirect Consumer          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due 26   26   42
90 Days or More Past Due | Credit card and other consumer | Other consumer          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due 3   3   4
90 Days or More Past Due | Commercial          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due 426   426   507
90 Days or More Past Due | Commercial | United States          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due 263   263   332
90 Days or More Past Due | Commercial | Non United States          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due 1   1   1
90 Days or More Past Due | Commercial | Commercial Real Estate          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due 53   53   82
90 Days or More Past Due | Commercial | Small Business Commercial          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due 78   78   $ 72
90 Days or More Past Due | Chapter Seven Bankruptcy | Nonperforming Financing Receivable          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due $ 245   $ 245