Segments - Schedule of Company's Segment Results (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting Information [Line Items]
Revenues, net	$ 577,877	$ 484,426	$ 1,639,547	$ 1,316,593
Operating income	232,637	191,055	643,748	538,178
Depreciation and amortization	69,156	57,084	198,731	141,848
Capital expenditures	16,859	17,120	49,459	41,877
North America
Segment Reporting Information [Line Items]
Revenues, net	364,443	345,868	1,037,386	950,542
Operating income	138,748	135,760	394,646	367,221
Depreciation and amortization	37,600	32,739	104,161	96,351
Capital expenditures	9,167	11,980	30,901	28,501
International
Segment Reporting Information [Line Items]
Revenues, net	213,434	138,558	602,161	366,051
Operating income	93,889	55,295	249,102	170,957
Depreciation and amortization	31,556	24,345	94,570	45,497
Capital expenditures	$ 7,692	$ 5,140	$ 18,558	$ 13,376