Acquisitions and Investments - Purchase Price Allocations of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
All 2013 Acquisitions [Member]
Business Acquisition [Line Items]
Intangible assets		$ 473,000
All 2013 Acquisitions [Member] | Trade Names and Trademarks [Member]
Business Acquisition [Line Items]
Intangible assets		46,900
Customer Relationships [Member] | All 2013 Acquisitions [Member]
Business Acquisition [Line Items]
Intangible assets		357,260
Customer Relationships [Member] | All 2013 Acquisitions [Member] | Minimum [Member]
Business Acquisition [Line Items]
Useful Lives (in Years)		3 years
Customer Relationships [Member] | All 2013 Acquisitions [Member] | Maximum [Member]
Business Acquisition [Line Items]
Useful Lives (in Years)		20 years
Trade Names and Trademarks [Member] | Minimum [Member]
Business Acquisition [Line Items]
Useful Lives (in Years)	3 years	3 years
Trade Names and Trademarks [Member] | Maximum [Member]
Business Acquisition [Line Items]
Useful Lives (in Years)	15 years	15 years
Trade Names and Trademarks [Member] | All 2013 Acquisitions [Member]
Business Acquisition [Line Items]
Useful Lives (in Years)		15 years
Intangible assets		200
Merchant Network [Member] | All 2013 Acquisitions [Member]
Business Acquisition [Line Items]
Useful Lives (in Years)		10 years
Intangible assets		16,750
Software [Member] | Minimum [Member]
Business Acquisition [Line Items]
Useful Lives (in Years)	3 years	3 years
Software [Member] | Maximum [Member]
Business Acquisition [Line Items]
Useful Lives (in Years)	10 years	10 years
Software [Member] | All 2013 Acquisitions [Member]
Business Acquisition [Line Items]
Intangible assets		36,890
Software [Member] | All 2013 Acquisitions [Member] | Minimum [Member]
Business Acquisition [Line Items]
Useful Lives (in Years)		3 years
Software [Member] | All 2013 Acquisitions [Member] | Maximum [Member]
Business Acquisition [Line Items]
Useful Lives (in Years)		10 years
Non-compete [Member] | Minimum [Member]
Business Acquisition [Line Items]
Useful Lives (in Years)	2 years	2 years
Non-compete [Member] | Maximum [Member]
Business Acquisition [Line Items]
Useful Lives (in Years)	5 years	5 years
Non-compete [Member] | All 2013 Acquisitions [Member]
Business Acquisition [Line Items]
Useful Lives (in Years)		5 years
Intangible assets		$ 15,000