Non-Interest Revenue and Expense Detail (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Details Of Certain Statements Of Income Lines Details [Abstract] | |||
| Foreign currency conversion fee revenue | $ 852 | $ 877 | $ 877 |
| Delinquency fees | 788 | 722 | 667 |
| Loyalty Partner-related fees | 379 | 383 | 310 |
| Service fees | 361 | 366 | 375 |
| Other | 137 | 160 | 185 |
| Total Other commissions and fees | $ 2,517 | $ 2,508 | $ 2,414 |