Debt Facilities - Interest Charges (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Debt Disclosure [Abstract]
Interest expense	$ 78,943	$ 99,736	$ 255,855	$ 315,554
Interest capitalized	6,426	7,091	19,217	20,002
Interest charges incurred	$ 85,369	$ 106,827	$ 275,072	$ 335,556