Goodwill and Other Intangible Assets - Schedule of Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Amounts	$ 3,383,769	$ 3,508,360
Accumulated Amortization	(1,214,027)	(1,166,478)
Net Carrying Amount	2,169,742	2,341,882
Trade names and trademarks—indefinite lived
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Amounts	469,786	496,306
Net Carrying Amount	$ 469,786	496,306
Customer and vendor relationships
Finite And Indefinite Lived Intangible Assets [Line Items]
Weighted- Avg Useful Lives (Years)	17 years 2 months 12 days
Gross Carrying Amounts	$ 2,611,705	2,698,327
Accumulated Amortization	(987,209)	(943,537)
Net Carrying Amount	$ 1,624,496	1,754,790
Trade names and trademarks—other
Finite And Indefinite Lived Intangible Assets [Line Items]
Weighted- Avg Useful Lives (Years)	13 years 2 months 12 days
Gross Carrying Amounts	$ 5,267	5,384
Accumulated Amortization	(2,947)	(2,877)
Net Carrying Amount	$ 2,320	2,507
Software
Finite And Indefinite Lived Intangible Assets [Line Items]
Weighted- Avg Useful Lives (Years)	5 years 10 months 24 days
Gross Carrying Amounts	$ 234,292	242,783
Accumulated Amortization	(183,241)	(180,839)
Net Carrying Amount	$ 51,051	61,944
Non-compete agreements
Finite And Indefinite Lived Intangible Assets [Line Items]
Weighted- Avg Useful Lives (Years)	4 years
Gross Carrying Amounts	$ 62,719	65,560
Accumulated Amortization	(40,630)	(39,225)
Net Carrying Amount	$ 22,089	$ 26,335