Segments - Schedule of Long-Lived Assets by Geographical Area (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
United States (country of domicile)
Segment Reporting Information [Line Items]
Long-lived assets (excluding goodwill and investments)	$ 1,547,423	$ 1,860,708
Brazil
Segment Reporting Information [Line Items]
Long-lived assets (excluding goodwill and investments)	341,242	487,464
United Kingdom
Segment Reporting Information [Line Items]
Long-lived assets (excluding goodwill and investments)	$ 269,556	$ 282,351