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Accounts Receivable and Loans (Details 1) (USD $)
In Millions
Jun. 30, 2011
Dec. 31, 2010
Jun. 30, 2010
Dec. 31, 2009
Loans segment information        
Cardmember loans, gross $ 58,749 $ 60,850    
Less: Cardmember reserve for losses 2,560 3,646 4,866 5,799
Cardmember loans, net 56,189 57,204    
Other loans, net 377 412    
Accounts Receivable and Loans Textuals [Abstract]        
Unamortized net card fees 142 134    
Variable Interest Enterprise [Member] | U S Card Services [Member]
       
Accounts Receivable and Loans Textuals [Abstract]        
Gross cardmember loans available to settle the obligations of a variable interest entity 32,137 34,726    
U S Card Services [Member]
       
Loans segment information        
Cardmember loans, gross 49,908 51,565    
International Card Services [Member]
       
Loans segment information        
Cardmember loans, gross 8,806 9,255    
Global Commercial Services [Member]
       
Loans segment information        
Cardmember loans, gross $ 35 $ 30