XML 50 R38.htm IDEA: XBRL DOCUMENT v3.10.0.1
Card Member Receivables and Card Member Loans 1 (Details) - USD ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Card Member loans        
Less: Reserve for losses $ 5 $ 5 $ 5 $ 4
Card Member loans, net 636 556    
Global Consumer Services Group [Member]        
Card Member loans        
Card Member loans 641 561    
Less: Reserve for losses 5 5    
Card Member loans, net $ 636 $ 556