Visa Shares and Litigation Expense (Details) (USD $)	1 Months Ended				12 Months Ended		0 Months Ended				0 Months Ended
	Aug. 31, 2012	Feb. 29, 2012	Nov. 30, 2009	Mar. 31, 2008	Dec. 31, 2013	Dec. 31, 2012	Oct. 19, 2012 Visa Class B to Visa Class A Shares Conversion Rate [Member]	Dec. 31, 2013 Visa Class B to Visa Class A Shares Conversion Rate [Member] request	Dec. 31, 2012 Visa Class B to Visa Class A Shares Conversion Rate [Member]	Nov. 19, 2012 Visa Class B to Visa Class A Shares Conversion Rate [Member]	Oct. 19, 2012 Visa Class B to Visa Class A Shares Conversion Rate [Member] Visa USA [Member]
Derivative [Line Items]
Pre-tax gain on redemption of Visa shares				$ 38,500,000
Proceeds from sale of Visa shares			51,900,000
Gain from sale of Visa shares			51,900,000
Fair value of derivative liability								2,700,000	3,000,000
Settlements paid to derivative counterparty	888,000	9,900,000
Indemnification charge to earnings					1,600,000	6,300,000
Settlement payment for multi-district interchange litigation							$ 6,600,000,000				$ 4,400,000,000
Percent of original cash payments made into settlement fund to be received by class plaintiffs										25.00%
Number of requests received to put out of settlement								8,000