Goodwill and Other Intangibles - Schedule of Other Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Amounts	$ 3,314,289	$ 3,468,011
Accumulated Amortization	(1,263,370)	(1,352,129)
Net Carrying Amount	2,050,919	2,115,882
Trade names and trademarks—indefinite lived
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Amounts	445,888	475,376
Net Carrying Amount	$ 445,888	475,376
Customer and vendor relationships
Finite And Indefinite Lived Intangible Assets [Line Items]
Weighted- Avg Useful Lives (Years)	16 years 9 months 18 days
Gross Carrying Amounts	$ 2,564,502	2,671,104
Accumulated Amortization	(1,034,876)	(1,105,702)
Net Carrying Amount	$ 1,529,626	1,565,402
Trade names and trademarks—other
Finite And Indefinite Lived Intangible Assets [Line Items]
Weighted- Avg Useful Lives (Years)	11 years 4 months 24 days
Gross Carrying Amounts	$ 6,757	7,041
Accumulated Amortization	(3,239)	(3,431)
Net Carrying Amount	$ 3,518	3,610
Software
Finite And Indefinite Lived Intangible Assets [Line Items]
Weighted- Avg Useful Lives (Years)	6 years
Gross Carrying Amounts	$ 241,835	248,686
Accumulated Amortization	(184,480)	(194,187)
Net Carrying Amount	$ 57,355	54,499
Non-compete agreements
Finite And Indefinite Lived Intangible Assets [Line Items]
Weighted- Avg Useful Lives (Years)	4 years 2 months 12 days
Gross Carrying Amounts	$ 55,307	65,804
Accumulated Amortization	(40,775)	(48,809)
Net Carrying Amount	$ 14,532	$ 16,995