Acquisitions (Purchase Price Allocations Of Intangible Assets) (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Business Acquisition [Line Items]
Intangible assets	$ 102,658	$ 168,200
Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets	73,884	141,600
Trade Names And Trademarks-Indefinite [Member]
Business Acquisition [Line Items]
Indefinite intangible assets	14,700	18,400
Weighted Average Useful Lives (in Years)		0 years
Merchant Network [Member]
Business Acquisition [Line Items]
Intangible assets	6,574	8,200
Weighted Average Useful Lives (in Years)	10 years	10 years
Software [Member]
Business Acquisition [Line Items]
Intangible assets	6,700
Non-compete [Member]
Business Acquisition [Line Items]
Intangible assets	$ 800
Minimum [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Weighted Average Useful Lives (in Years)	10 years	10 years
Minimum [Member] | Software [Member]
Business Acquisition [Line Items]
Weighted Average Useful Lives (in Years)	3 years
Minimum [Member] | Non-compete [Member]
Business Acquisition [Line Items]
Weighted Average Useful Lives (in Years)	2 years
Maximum [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Weighted Average Useful Lives (in Years)	20 years	20 years
Maximum [Member] | Software [Member]
Business Acquisition [Line Items]
Weighted Average Useful Lives (in Years)	10 years
Maximum [Member] | Non-compete [Member]
Business Acquisition [Line Items]
Weighted Average Useful Lives (in Years)	6 years