Accounts Receivable and Loans (Details Textuals)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Average basis point reduction in interest rate by class of cardmember loans	11.00%	13.00%	12.00%	13.00%
U S Card Services [Member]
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
Average payment term extension	12	13	12	13