XML 62 R50.htm IDEA: XBRL DOCUMENT v3.4.0.3
Reserves for Losses (Details 2) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Changes in the Card Member loans reserve for losses    
Balance, January 1 $ 1,028 $ 1,201
Card Member loans - provisions 227 235
Card Member loans net write-offs - principal (214) (259)
Card Member loans net write-offs - interest and fees (40) (43)
Card Member loans - other 11 (4)
Balance, March 31 $ 1,012 $ 1,130