Segment Information (Summary of NOI by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Information
Total revenues	$ 472,359	$ 453,494	$ 918,282	$ 895,624
Operating expenses	(222,723)	(222,309)	(451,496)	(438,838)
NOI - consolidated	249,636	231,185	466,786	456,786
Deduct: NOI attributable to noncontrolling interests in consolidated subsidiaries	(18,742)	(16,299)	(30,506)	(36,334)
Add: NOI from partially owned entities	70,745	74,060	138,842	152,752
NOI at share	301,639	288,946	575,122	573,204
Non-cash adjustments for straight-line rents, amortization of acquired below-market leases, net, and other	(5,570)	(4,275)	(518)	(7,405)
NOI at share - cash basis	296,069	284,671	574,604	565,799
New York
Segment Information
Total revenues	362,471	364,162	726,285	722,710
Operating expenses	(176,410)	(176,572)	(364,731)	(354,107)
NOI - consolidated	186,061	187,590	361,554	368,603
Deduct: NOI attributable to noncontrolling interests in consolidated subsidiaries	(5,204)	(10,707)	(10,027)	(24,017)
Add: NOI from partially owned entities	67,509	71,209	132,833	147,173
NOI at share	248,366	248,092	484,360	491,759
Non-cash adjustments for straight-line rents, amortization of acquired below-market leases, net, and other	(6,797)	(6,189)	(1,764)	(10,164)
NOI at share - cash basis	241,569	241,903	482,596	481,595
Other
Segment Information
Total revenues	109,888	89,332	191,997	172,914
Operating expenses	(46,313)	(45,737)	(86,765)	(84,731)
NOI - consolidated	63,575	43,595	105,232	88,183
Deduct: NOI attributable to noncontrolling interests in consolidated subsidiaries	(13,538)	(5,592)	(20,479)	(12,317)
Add: NOI from partially owned entities	3,236	2,851	6,009	5,579
NOI at share	53,273	40,854	90,762	81,445
Non-cash adjustments for straight-line rents, amortization of acquired below-market leases, net, and other	1,227	1,914	1,246	2,759
NOI at share - cash basis	$ 54,500	$ 42,768	$ 92,008	$ 84,204