Segments - Schedule of Company's Segment Results (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Revenues, net	$ 404,605	$ 273,502	$ 820,771	$ 527,410
Operating income	169,151	134,484	332,925	248,620
Depreciation and amortization	48,827	24,429	96,909	48,847
Capital expenditures	8,129	5,968	16,234	11,552
North America [Member]
Segment Reporting Information [Line Items]
Revenues, net	284,576	138,861	583,389	265,236
Operating income	109,584	68,317	219,350	124,514
Depreciation and amortization	32,021	6,376	63,943	13,012
Capital expenditures	3,793	1,840	8,017	3,836
International [Member]
Segment Reporting Information [Line Items]
Revenues, net	120,029	134,641	237,382	262,174
Operating income	59,567	66,167	113,575	124,106
Depreciation and amortization	16,806	18,053	32,966	35,835
Capital expenditures	$ 4,336	$ 4,128	$ 8,217	$ 7,716