Accounts Receivable and Loans (Details Textuals)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Financing Receivable, Modifications [Line Items]
Average basis point reduction in interest rate by class of Card Member loans	10.00%	11.00%	11.00%	12.00%
U S Card Services [Member]
Financing Receivable, Modifications [Line Items]
Average payment term extension	12	12	12	13