Segment Information - Long-Lived Assets by Geographic Area (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 2,841,089	$ 3,050,165	$ 3,045,368
North American Region
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	1,466,413	1,543,662	1,566,621
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	1,420,000	1,490,000	1,570,000
International
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 1,374,676	$ 1,506,503	$ 1,478,747