Segments - Schedule of Company's Segment Results (Detail) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018		Sep. 30, 2019		Sep. 30, 2018
Segment Reporting Information [Line Items]
Revenues, net	$ 681,048	$ 619,586	[1]	$ 1,949,967		$ 1,790,070	[1]
Operating income:	329,141	281,090	[1]	910,634		805,961	[1]
Depreciation and amortization	67,347	67,267	[1]	205,700		207,379	[1]
Capital expenditures:	16,706	21,698		48,681	[2]	56,312
North America
Segment Reporting Information [Line Items]
Revenues, net	442,704	412,816		1,257,544		1,148,034
Operating income:	206,965	177,769		563,574		495,095
Depreciation and amortization	39,309	39,049		119,476		116,041
Capital expenditures:	10,340	12,604		30,023		32,700
International
Segment Reporting Information [Line Items]
Revenues, net	238,344	206,770		692,423		642,036
Operating income:	122,176	103,321		347,060		310,866
Depreciation and amortization	28,038	28,218		86,224		91,338
Capital expenditures:	$ 6,366	$ 9,094		$ 18,658		$ 23,612

[1] Reflects reclassifications from previously disclosed amounts to conform to current presentation.

[2] Reflects the impact of the Company's adoption of ASU 2016-02 "Leases", on January 1, 2019, using the modified retrospective transition method. Under this method, financial results reported in periods prior to 2019 are unchanged. Refer to footnote 2.