Selected Financial Information by Reportable Operating Segment (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Revenues		$ 957,756	$ 889,053	$ 1,672,479	$ 1,669,024
Adjusted EBITDA	[1]	244,738	221,603	396,992	415,033
Capital expenditures		57,600	82,426	115,169	162,589
U.S. Operating Segment
Segment Reporting Information [Line Items]
Revenues	[2]	742,926	709,074	1,297,742	1,305,417
International Operating Segment
Segment Reporting Information [Line Items]
Revenues		214,830	179,979	374,737	363,607
Operating Segments | U.S. Operating Segment
Segment Reporting Information [Line Items]
Revenues		747,119	712,483	1,304,917	1,312,128
Adjusted EBITDA		195,298	188,411	321,057	344,255
Capital expenditures		45,591	59,675	97,930	129,646
Operating Segments | International Operating Segment
Segment Reporting Information [Line Items]
Revenues		214,830	179,979	374,737	363,607
Adjusted EBITDA		49,440	33,192	75,935	70,778
Capital expenditures		12,009	22,751	17,239	32,943
Eliminations
Segment Reporting Information [Line Items]
Revenues		$ (4,193)	$ (3,409)	$ (7,175)	$ (6,711)

[1] Amounts for the three and six months ended June 30, 2019 were impacted by the adoption of ASC Topic 842 and the resulting change in the classification of certain of the Company’s leases

[2] U.S. segment revenues include eliminations of intercompany transactions with the international operating segment.  See Note 16 for additional information on intercompany eliminations.