Reconciliation of Geographic Revenues to Revenues by Operating Segment Based on the Domicile of the Company's Customers (Detail) (USD $) In Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010
Segment Reporting Information [Line Items]
Total revenues	$ 447,554		$ 430,887		$ 876,985		$ 844,350
North America Services
Segment Reporting Information [Line Items]
Total revenues	229,700		229,600		455,600		476,900
North America Services | United States
Segment Reporting Information [Line Items]
Total revenues	178,300		187,800		355,600		394,400
North America Services | Europe
Segment Reporting Information [Line Items]
Total revenues	200		200		400		400
North America Services | Canada
Segment Reporting Information [Line Items]
Total revenues	46,300		37,600		90,300		74,100
North America Services | Mexico
Segment Reporting Information [Line Items]
Total revenues	2,100		1,700		4,000		3,500
North America Services | Other
Segment Reporting Information [Line Items]
Total revenues	2,800		2,300		5,300		4,500
International Services
Segment Reporting Information [Line Items]
Total revenues	94,800		77,400		182,600		156,300
International Services | United States
Segment Reporting Information [Line Items]
Total revenues			400				400
International Services | Europe
Segment Reporting Information [Line Items]
Total revenues	71,800		57,700		137,400		120,000
International Services | Japan
Segment Reporting Information [Line Items]
Total revenues	18,300		14,900		35,700		27,100
International Services | Other
Segment Reporting Information [Line Items]
Total revenues	4,700		4,400		9,500		8,800
Merchant Services
Segment Reporting Information [Line Items]
Total revenues	123,100		123,900		238,800		211,200
Merchant Services | United States
Segment Reporting Information [Line Items]
Total revenues	122,800		123,400		238,200		210,300
Merchant Services | Canada
Segment Reporting Information [Line Items]
Total revenues	100		100		200		300
Merchant Services | Other
Segment Reporting Information [Line Items]
Total revenues	200		400		400		600
United States
Segment Reporting Information [Line Items]
Total revenues	301,100		311,600		593,800		605,100
Europe
Segment Reporting Information [Line Items]
Total revenues	72,000	[1]	57,900	[1]	137,800	[1]	120,400	[1]
Canada
Segment Reporting Information [Line Items]
Total revenues	46,400		37,700		90,500		74,400
Japan
Segment Reporting Information [Line Items]
Total revenues	18,300	[1]	14,900	[1]	35,700	[1]	27,100	[1]
Mexico
Segment Reporting Information [Line Items]
Total revenues	2,100		1,700		4,000		3,500
Other
Segment Reporting Information [Line Items]
Total revenues	$ 7,700		$ 7,100		$ 15,200		$ 13,900

[1] Revenues are impacted by movements in foreign currency exchange rates. Refer to the discussion under "Revenues" in the Results of Operations.