Goodwill and Other Intangible Assets - Schedule of Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Amounts	$ 3,242,681	$ 3,209,609
Accumulated Amortization	(609,030)	(556,376)
Net Carrying Amount	2,633,651	2,653,233
Trade names and trademarks—indefinite lived
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Amounts	518,505	510,952
Accumulated Amortization	0	0
Net Carrying Amount	$ 518,505	510,952
Customer and vendor agreements
Finite And Indefinite Lived Intangible Assets [Line Items]
Weighted- Avg Useful Lives	16 years 10 months 24 days
Gross Carrying Amounts	$ 2,471,625	2,449,389
Accumulated Amortization	(499,199)	(458,118)
Net Carrying Amount	$ 1,972,426	1,991,271
Trade names and trademarks—other
Finite And Indefinite Lived Intangible Assets [Line Items]
Weighted- Avg Useful Lives	14 years 8 months 12 days
Gross Carrying Amounts	$ 2,757	2,746
Accumulated Amortization	(2,056)	(2,021)
Net Carrying Amount	$ 701	725
Software
Finite And Indefinite Lived Intangible Assets [Line Items]
Weighted- Avg Useful Lives	5 years 3 months 18 days
Gross Carrying Amounts	$ 213,289	211,331
Accumulated Amortization	(94,968)	(85,167)
Net Carrying Amount	$ 118,321	126,164
Non-compete agreements
Finite And Indefinite Lived Intangible Assets [Line Items]
Weighted- Avg Useful Lives	5 years
Gross Carrying Amounts	$ 36,505	35,191
Accumulated Amortization	(12,807)	(11,070)
Net Carrying Amount	$ 23,698	$ 24,121