Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases - Credit Card and Other Consumer - Credit Quality Indicators (Details)

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Outstanding Loans and Leases - Credit Card and Other Consumer - Credit Quality Indicators (Details) - USD ($)
$ in Millions
Jun. 30, 2016
Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases $ 903,153 $ 896,983
Credit card and other consumer | Direct/Indirect Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 92,746 88,795
Securities based lending overcollateralized 43,400 43,700
Loans no longer originated by corporation 534 567
Credit card and other consumer | Other consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases $ 2,284 $ 2,067
Percentage from exited businesses 22.00% 27.00%
Credit card and other consumer | United States | Credit Card Receivable    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases $ 88,103 $ 89,602
Credit card and other consumer | Non United States | Credit Card Receivable    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases $ 9,380 $ 9,975
Percentage outstanding, current or less than 30 days past due 98.00% 98.00%
Percentage outstanding, 30-89 days past due 1.00% 1.00%
Percentage outstanding, equal to greater than 90 days past due 1.00% 1.00%
Credit card and other consumer | Less than 620 | Direct/Indirect Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases $ 1,315 $ 1,244
Credit card and other consumer | Less than 620 | Other consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 200 217
Credit card and other consumer | Less than 620 | United States | Credit Card Receivable    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 3,940 4,196
Credit card and other consumer | Less than 620 | Non United States | Credit Card Receivable    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 0 0
Credit card and other consumer | Greater than or equal to 620 and less than 680 | Direct/Indirect Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 1,855 1,698
Credit card and other consumer | Greater than or equal to 620 and less than 680 | Other consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 213 214
Credit card and other consumer | Greater than or equal to 620 and less than 680 | United States | Credit Card Receivable    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 11,562 11,857
Credit card and other consumer | Greater than or equal to 620 and less than 680 | Non United States | Credit Card Receivable    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 0 0
Credit card and other consumer | Greater than or equal to 680 and less than 740 | Direct/Indirect Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 11,818 10,955
Credit card and other consumer | Greater than or equal to 680 and less than 740 | Other consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 364 337
Credit card and other consumer | Greater than or equal to 680 and less than 740 | United States | Credit Card Receivable    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 33,592 34,270
Credit card and other consumer | Greater than or equal to 680 and less than 740 | Non United States | Credit Card Receivable    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 0 0
Credit card and other consumer | Greater than or equal to 740 | Direct/Indirect Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 32,730 29,581
Credit card and other consumer | Greater than or equal to 740 | Other consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 1,312 1,149
Credit card and other consumer | Greater than or equal to 740 | United States | Credit Card Receivable    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 39,009 39,279
Credit card and other consumer | Greater than or equal to 740 | Non United States | Credit Card Receivable    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 0 0
Credit card and other consumer | Other internal credit metrics | Direct/Indirect Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 45,028 45,317
Credit card and other consumer | Other internal credit metrics | Other consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 195 150
Credit card and other consumer | Other internal credit metrics | United States | Credit Card Receivable    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 0 0
Credit card and other consumer | Other internal credit metrics | Non United States | Credit Card Receivable    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases $ 9,380 $ 9,975