Reconciliation of Geographic Revenues to Revenues by Operating Segment Based on Domicile of Customers (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Segment Reporting Information [Line Items]
Total revenues	$ 462,651		$ 447,554		$ 923,813		$ 876,985
United States
Segment Reporting Information [Line Items]
Total revenues	303,800		301,100		609,300		593,800
Europe
Segment Reporting Information [Line Items]
Total revenues	73,900	[1]	72,000	[1]	146,800	[1]	137,800	[1]
Canada
Segment Reporting Information [Line Items]
Total revenues	51,000		46,400		101,800		90,500
Japan
Segment Reporting Information [Line Items]
Total revenues	19,500	[1]	18,300	[1]	37,900	[1]	35,700	[1]
Mexico
Segment Reporting Information [Line Items]
Total revenues	2,700		2,100		5,100		4,000
Other
Segment Reporting Information [Line Items]
Total revenues	11,800	[1]	7,700	[1]	22,900	[1]	15,200	[1]
North America Services
Segment Reporting Information [Line Items]
Total revenues	234,700		229,700		470,000		455,600
North America Services | United States
Segment Reporting Information [Line Items]
Total revenues	178,300		178,300		357,900		355,600
North America Services | Europe
Segment Reporting Information [Line Items]
Total revenues	200	[1]	200	[1]	300	[1]	400	[1]
North America Services | Canada
Segment Reporting Information [Line Items]
Total revenues	51,000		46,300		101,700		90,300
North America Services | Mexico
Segment Reporting Information [Line Items]
Total revenues	2,700		2,100		5,100		4,000
North America Services | Other
Segment Reporting Information [Line Items]
Total revenues	2,500	[1]	2,800	[1]	5,000	[1]	5,300	[1]
International Services
Segment Reporting Information [Line Items]
Total revenues	102,500		94,800		202,100		182,600
International Services | Europe
Segment Reporting Information [Line Items]
Total revenues	73,700	[1]	71,800	[1]	146,500	[1]	137,400	[1]
International Services | Japan
Segment Reporting Information [Line Items]
Total revenues	19,500	[1]	18,300	[1]	37,900	[1]	35,700	[1]
International Services | Other
Segment Reporting Information [Line Items]
Total revenues	9,300	[1]	4,700	[1]	17,700	[1]	9,500	[1]
Merchant Services
Segment Reporting Information [Line Items]
Total revenues	125,500		123,100		251,700		238,800
Merchant Services | United States
Segment Reporting Information [Line Items]
Total revenues	125,500		122,800		251,400		238,200
Merchant Services | Canada
Segment Reporting Information [Line Items]
Total revenues			100		100		200
Merchant Services | Other
Segment Reporting Information [Line Items]
Total revenues			$ 200	[1]	$ 200	[1]	$ 400	[1]

[1] Revenues are impacted by movements in foreign currency exchange rates.