Corporate Indebtedness - Schedule of Consolidated Interest Expense, Excluding Capitalized Interest (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest expense
Interest expense before capitalized interest	$ 246,848	$ 236,719	$ 281,551
Interest on financing leases	3,243	8,069	3,098
Interest capitalized	(55,446)	(34,162)	(26,020)
Interest income	(4,124)	(1,957)	(1,584)
Interest expense, net	$ 190,521	$ 208,669	$ 257,045