Corporate Indebtedness - Schedule of Consolidated Interest Expense, Excluding Capitalized Interest (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Interest expense
Interest expense before capitalized interest	$ 44,937	$ 60,745	$ 101,751	$ 121,555
Interest on financing leases	2,149	808	3,812	1,612
Interest capitalized	(16,368)	(12,019)	(36,852)	(22,528)
Interest income	(648)	(2,374)	(1,147)	(2,954)
Interest expense, net	$ 30,070	$ 47,160	$ 67,564	$ 97,685