Leases - Schedule of Components of Operating Lease Income from Leases (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Operating Leases Lease Income [Abstract]
Fixed lease payments	$ 509,188	$ 262,043	$ 1,492,519	$ 674,780
Variable lease payments	52,865	28,410	155,346	75,542
Rental revenue	$ 562,053	$ 290,453	$ 1,647,865	$ 750,322