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 9 Months Ended 12 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 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 $ 905,008   $ 905,008   $ 896,983
Proceeds from sales     14,870 $ 20,399  
Purchased credit impaired loans sold 111 $ 220 435 1,200  
Nonperforming loans and leases 8,349   8,349   9,377
Accruing past due 90 days or more 6,050   6,050   8,250
Residential Mortgage          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Accruing past due 90 days or more 1,800   1,800   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 360 742 1,800 2,700  
Recoveries related to sales 6 58   125  
Write-offs related to sales     39    
Nonperforming Financing Receivable | Junior Lien Home Equity Financing Receivable          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 432   432   484
Consumer Portfolio Segment          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 452,463   452,463   456,169
Nonperforming loans and leases 6,350   6,350   8,165
Accruing past due 90 days or more 5,916   $ 5,916   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 150,491   $ 150,491   141,795
Nonperforming loans and leases 1,394   1,394   1,825
Accruing past due 90 days or more 452   452   382
Consumer Real Estate | Core Portfolio Home Equity          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 50,924   50,924   54,917
Nonperforming loans and leases 956   956   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 26,863   26,863   34,050
Nonperforming loans and leases 1,947   1,947   2,978
Accruing past due 90 days or more 4,665   4,665   6,768
Consumer Real Estate | Non-core Home Equity          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 14,219   14,219   16,412
Nonperforming loans and leases 2,026   2,026   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 88,789   88,789   89,602
Accruing past due 90 days or more 702   702   789
Credit card and other consumer | Credit Card Receivable | Non United States          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 9,258   9,258   9,975
Accruing past due 90 days or more 65   65   76
Credit card and other consumer | Direct/Indirect Consumer          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 93,294   93,294   88,795
Nonperforming loans and leases 26   26   24
Accruing past due 90 days or more 29   29   39
Credit card and other consumer | Other consumer          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 2,389   2,389   2,067
Nonperforming loans and leases 1   1   1
Accruing past due 90 days or more 3   $ 3   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 452,545   $ 452,545   440,814
Nonperforming loans and leases 1,999   1,999   1,212
Accruing past due 90 days or more 134   134   193
Commercial | United States          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 267,019   267,019   252,771
Nonperforming loans and leases 1,439   1,439   867
Accruing past due 90 days or more 40   40   113
Commercial | Non United States          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 87,497   87,497   91,549
Nonperforming loans and leases 400   400   158
Accruing past due 90 days or more 3   3   1
Commercial | Commercial Real Estate          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 57,303   57,303   57,199
Nonperforming loans and leases 60   60   93
Accruing past due 90 days or more 0   0   3
Commercial | Commercial Real Estate | United States          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 53,900   53,900   53,600
Commercial | Commercial Real Estate | Non United States          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 3,400   3,400   3,500
Commercial | Commercial Lease Financing          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 21,309   21,309   21,352
Nonperforming loans and leases 35   35   12
Accruing past due 90 days or more 28   28   15
Commercial | Small Business Commercial          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Nonperforming loans and leases 65   65   82
Accruing past due 90 days or more 63   63   61
Commercial | Small Business Commercial | United States          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 13,077   13,077   12,876
Chapter Seven Bankruptcy          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 1,500   1,500    
Chapter Seven Bankruptcy | Nonperforming Financing Receivable          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Loans and leases 616   616    
Non-performing troubled debt with no change in repayment terms at time of discharge, current with contractual payments $ 370   $ 370    
Nonperforming loans discharged more than twelve months prior (more than) 81.00%   81.00%    
Nonperforming loans discharged more than twenty four months prior 68.00%   68.00%    
Noninterest income | Nonperforming Financing Receivable          
Financing Receivable, Recorded Investment, Past Due [Line Items]          
Gain (loss) on sale $ 19 $ 67 $ 63 $ 142  
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 9,638   9,638   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 9,176   9,176   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 1,244   1,244   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 464   464   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 5,803   5,803   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 865   865   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 702   702   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 65   65   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 29   29   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 4   4   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 462   462   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 310   310   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 3   3   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 38   38   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 79   79   $ 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 $ 212   $ 212