Reconciliation of Geographic Revenues to External Revenues by Operating Segments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Segment Reporting Information [Line Items]
Total revenues	$ 662,156		$ 592,848
United States
Segment Reporting Information [Line Items]
Total revenues	497,900		440,400
Canada
Segment Reporting Information [Line Items]
Total revenues	77,900		63,000
Europe
Segment Reporting Information [Line Items]
Total revenues	67,800	[1]	70,000	[1]
Mexico
Segment Reporting Information [Line Items]
Total revenues	4,300		3,900
Other
Segment Reporting Information [Line Items]
Total revenues	14,300	[1]	15,500	[1]
North America Services
Segment Reporting Information [Line Items]
Total revenues	300,700		256,100
North America Services | United States
Segment Reporting Information [Line Items]
Total revenues	214,000		185,300
North America Services | Canada
Segment Reporting Information [Line Items]
Total revenues	77,800		62,900
North America Services | Europe
Segment Reporting Information [Line Items]
Total revenues	200	[1]	200	[1]
North America Services | Mexico
Segment Reporting Information [Line Items]
Total revenues	4,300		3,900
North America Services | Other
Segment Reporting Information [Line Items]
Total revenues	4,400	[1]	3,800	[1]
International Services
Segment Reporting Information [Line Items]
Total revenues	77,300		81,300
International Services | Europe
Segment Reporting Information [Line Items]
Total revenues	67,600	[1]	69,800	[1]
International Services | Other
Segment Reporting Information [Line Items]
Total revenues	9,700	[1]	11,500	[1]
Merchant Services
Segment Reporting Information [Line Items]
Total revenues	129,100		122,800
Merchant Services | United States
Segment Reporting Information [Line Items]
Total revenues	128,800		122,500
Merchant Services | Canada
Segment Reporting Information [Line Items]
Total revenues	100		100
Merchant Services | Other
Segment Reporting Information [Line Items]
Total revenues	200	[1]	200	[1]
NetSpend
Segment Reporting Information [Line Items]
Total revenues	155,100		132,600
NetSpend | United States
Segment Reporting Information [Line Items]
Total revenues	$ 155,100		$ 132,600

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