Goodwill and Other Intangible Assets - Schedule of Other Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amounts	$ 1,020,117	$ 563,405
Accumulated Amortization	(148,854)	(99,541)
Net Carrying Amount	871,263	463,864
Customer and Vendor Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amounts	850,809	487,718
Accumulated Amortization	(134,998)	(90,920)
Net Carrying Amount	715,811	396,798
Customer and Vendor Agreements [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Lives (Years)	5 years	5 years
Customer and Vendor Agreements [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Lives (Years)	20 years	20 years
Trade Names and Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amounts	99,690	53,926
Net Carrying Amount	99,690	53,926
Trade Names and Trademarks-Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amounts	3,341	3,160
Accumulated Amortization	(1,635)	(1,420)
Net Carrying Amount	1,706	1,740
Trade Names and Trademarks-Other [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Lives (Years)	3 years	3 years
Trade Names and Trademarks-Other [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Lives (Years)	15 years	15 years
Software [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amounts	47,778	15,330
Accumulated Amortization	(9,090)	(5,208)
Net Carrying Amount	38,688	10,122
Software [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Lives (Years)	3 years	3 years
Software [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Lives (Years)	10 years	10 years
Non-compete [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amounts	18,499	3,271
Accumulated Amortization	(3,131)	(1,993)
Net Carrying Amount	$ 15,368	$ 1,278
Non-compete [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Lives (Years)	2 years	2 years
Non-compete [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Lives (Years)	6 years	6 years