Debt - Interest Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
Gross interest expense	$ 271,451	$ 268,942	$ 328,228
Amortization of debt discounts (premiums), net	3,713	(590)	(13,728)
Amortization of debt issuance costs, net	13,293	13,243	14,479
Interest expense before capitalization	288,457	281,595	328,979
Capitalized amounts	(48,504)	(52,454)	(54,493)
Net interest expense	239,953	229,141	274,486
Total cash paid for interest, net of receipts and amounts capitalized	$ 214,375	$ 205,485	$ 278,313