Segment Information (Summary of NOI by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Information
Total revenues	$ 442,130	$ 379,977
Operating expenses	(216,529)	(190,979)
NOI - consolidated	225,601	188,998
Deduct: NOI attributable to noncontrolling interests in consolidated subsidiaries	(20,035)	(17,646)
Add: NOI from partially owned entities	78,692	78,756
NOI at share	284,258	250,108
Non-cash adjustments for straight-line rents, amortization of acquired below-market leases, net, and other	(3,130)	(1,198)
NOI at share - cash basis	281,128	248,910
New York
Segment Information
Total revenues	358,548	303,971
Operating expenses	(177,535)	(160,985)
NOI - consolidated	181,013	142,986
Deduct: NOI attributable to noncontrolling interests in consolidated subsidiaries	(13,310)	(8,621)
Add: NOI from partially owned entities	75,964	76,773
NOI at share	243,667	211,138
Non-cash adjustments for straight-line rents, amortization of acquired below-market leases, net, and other	(3,975)	(973)
NOI at share - cash basis	239,692	210,165
Other
Segment Information
Total revenues	83,582	76,006
Operating expenses	(38,994)	(29,994)
NOI - consolidated	44,588	46,012
Deduct: NOI attributable to noncontrolling interests in consolidated subsidiaries	(6,725)	(9,025)
Add: NOI from partially owned entities	2,728	1,983
NOI at share	40,591	38,970
Non-cash adjustments for straight-line rents, amortization of acquired below-market leases, net, and other	845	(225)
NOI at share - cash basis	$ 41,436	$ 38,745