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Income Taxes - Income Tax Reconciliation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Federal tax at statutory rate	$ (109,906)	$ (145,445)	$ (90,938)
State and local tax (expense) benefit	2,071	(5,852)	(3,616)
Deferred tax assets generated in current year not benefited	(12,852)	(5,398)	(3,777)
Foreign income tax rate differential	(16,364)	(11,610)	(4,072)
Non-deductible expenses	(4,427)	(1,021)	(756)
Stock-based compensation expense	(954)	(2,105)	(2,308)
Change in valuation allowance	390	(2,870)	38,684
Foreign financing activities	(11,743)	(18,738)	(17,548)
Loss on divestments	0	(3,277)	0
Uncertain tax positions reserve	(38,014)	(35,724)	(20,440)
Tax adjustments related to REIT	50,107	63,614	32,189
Change in deferred tax adjustments	(136)	(10,574)	0
Other, net	(4,323)	(6,352)	4,903
Income tax expense	$ (146,151)	$ (185,352)	$ (67,679)

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