Accounts Receivable and Loans (Details 7) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013 Account	Jun. 30, 2012 Account	Jun. 30, 2013 Account	Jun. 30, 2012 Account
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Number of Accounts	7,000	7,000	13,000	17,000
Aggregated Outstanding Balance Upon Payment Default	$ 66	$ 55	$ 126	$ 130
Cardmember Loans [Member] | U S Card Services [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Number of Accounts	6,000	6,000	11,000	15,000
Aggregated Outstanding Balance Upon Payment Default	53	47	101	110
Cardmember Receivables [Member] | U S Card Services [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Number of Accounts	1,000	1,000	2,000	2,000
Aggregated Outstanding Balance Upon Payment Default	$ 13	$ 8	$ 25	$ 20