Acquisitions (Purchase Price Allocation of Intangible Assets) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Business Acquisition [Line Items]
Intangible assets	109,758	168,200	13,502
Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets	77,654	141,600	11,461
Customer Relationships [Member] | Minimum [Member]
Business Acquisition [Line Items]
Weighted Average Useful Lives (in Years)	10 years	10 years	9 years
Customer Relationships [Member] | Maximum [Member]
Business Acquisition [Line Items]
Weighted Average Useful Lives (in Years)	20 years	20 years	20 years
Trade Names And Trademarks-Indefinite [Member]
Business Acquisition [Line Items]
Weighted Average Useful Lives (in Years)	0 years	0 years
Intangible assets	16,900	18,400
Merchant Network [Member]
Business Acquisition [Line Items]
Weighted Average Useful Lives (in Years)	10 years	20 years
Intangible assets	4,604	8,200	2,041
Merchant Network [Member] | Minimum [Member]
Business Acquisition [Line Items]
Weighted Average Useful Lives (in Years)			5 years
Merchant Network [Member] | Maximum [Member]
Business Acquisition [Line Items]
Weighted Average Useful Lives (in Years)			15 years
Software [Member]
Business Acquisition [Line Items]
Intangible assets	9,800
Software [Member] | Minimum [Member]
Business Acquisition [Line Items]
Weighted Average Useful Lives (in Years)	3 years
Software [Member] | Maximum [Member]
Business Acquisition [Line Items]
Weighted Average Useful Lives (in Years)	10 years
Non-compete [Member]
Business Acquisition [Line Items]
Intangible assets	800
Non-compete [Member] | Minimum [Member]
Business Acquisition [Line Items]
Weighted Average Useful Lives (in Years)	2 years
Non-compete [Member] | Maximum [Member]
Business Acquisition [Line Items]
Weighted Average Useful Lives (in Years)	6 years