Segment Information - Summary of NOI by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Segment Information
Total revenues	$ 534,668	$ 536,437
Operating expenses	246,895	237,602
NOI - consolidated	287,773	298,835
Deduct: NOI attributable to noncontrolling interests in consolidated subsidiaries	(17,403)	(17,312)
Add: NOI from partially owned entities	67,402	67,513
NOI at share	337,772	349,036
Non-cash adjustments for straight-line rents, amortization of acquired below-market leases, net, and other	(5,181)	(17,948)
NOI at share - cash basis	332,591	331,088
New York
Segment Information
Total revenues	443,285	448,484
Operating expenses	198,095	197,916
NOI - consolidated	245,190	250,568
Deduct: NOI attributable to noncontrolling interests in consolidated subsidiaries	(11,407)	(11,745)
Add: NOI from partially owned entities	49,575	49,773
NOI at share	283,358	288,596
Non-cash adjustments for straight-line rents, amortization of acquired below-market leases, net, and other	(6,618)	(17,323)
NOI at share - cash basis	276,740	271,273
Other
Segment Information
Total revenues	91,383	87,953
Operating expenses	48,800	39,686
NOI - consolidated	42,583	48,267
Deduct: NOI attributable to noncontrolling interests in consolidated subsidiaries	(5,996)	(5,567)
Add: NOI from partially owned entities	17,827	17,740
NOI at share	54,414	60,440
Non-cash adjustments for straight-line rents, amortization of acquired below-market leases, net, and other	1,437	(625)
NOI at share - cash basis	$ 55,851	$ 59,815