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
 6 Months Ended 12 Months Ended
Jun. 30, 2015
Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases $ 886,449 $ 881,391
Credit card and other consumer | Direct/Indirect Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 84,754 80,381
Securities based lending overcollateralized 42,600 39,700
Loans no longer originated by corporation 600 632
Credit card and other consumer | Other consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases $ 2,000 $ 1,846
Percentage from exited businesses 31.00% 37.00%
Credit card and other consumer | United States | Credit Card Receivable    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases $ 88,403 $ 91,879
Credit card and other consumer | Non United States | Credit Card Receivable    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases $ 10,276 $ 10,465
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 $ 1,266 $ 1,296
Credit card and other consumer | Less than 620 | Other consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 237 266
Credit card and other consumer | Less than 620 | United States | Credit Card Receivable    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 4,023 4,467
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 1,748 1,892
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 218 227
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 11,624 12,177
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 10,667 10,749
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 315 307
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 33,678 34,986
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 27,077 25,279
Credit card and other consumer | Greater than or equal to 740 | Other consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 1,000 881
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 39,078 40,249
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 43,996 41,165
Credit card and other consumer | Other internal credit metrics | Other consumer    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 230 165
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 $ 10,276 $ 10,465