Segment Information (Schedule of NOI by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Information
Total revenues	$ 450,995	$ 457,431	$ 1,369,277	$ 1,353,055
Operating expenses	(233,737)	(221,596)	(685,233)	(660,434)
NOI - consolidated	217,258	235,835	684,044	692,621
Deduct: NOI attributable to noncontrolling interests in consolidated subsidiaries	(8,363)	(14,766)	(38,869)	(51,100)
Add: NOI from partially owned entities	72,100	76,020	210,942	228,772
NOI at share	280,995	297,089	856,117	870,293
Non-cash adjustments for straight-line rents, amortization of acquired below-market leases, net, and other	(2,980)	(1,419)	(3,498)	(8,824)
NOI at share - cash basis	278,015	295,670	852,619	861,469
New York
Segment Information
Total revenues	364,768	360,033	1,091,053	1,082,743
Operating expenses	(186,147)	(182,131)	(550,878)	(536,238)
NOI - consolidated	178,621	177,902	540,175	546,505
Deduct: NOI attributable to noncontrolling interests in consolidated subsidiaries	(2,197)	(8,691)	(12,224)	(32,708)
Add: NOI from partially owned entities	69,210	71,943	202,043	219,116
NOI at share	245,634	241,154	729,994	732,913
Non-cash adjustments for straight-line rents, amortization of acquired below-market leases, net, and other	(4,790)	(3,462)	(6,554)	(13,626)
NOI at share - cash basis	240,844	237,692	723,440	719,287
Other
Segment Information
Total revenues	86,227	97,398	278,224	270,312
Operating expenses	(47,590)	(39,465)	(134,355)	(124,196)
NOI - consolidated	38,637	57,933	143,869	146,116
Deduct: NOI attributable to noncontrolling interests in consolidated subsidiaries	(6,166)	(6,075)	(26,645)	(18,392)
Add: NOI from partially owned entities	2,890	4,077	8,899	9,656
NOI at share	35,361	55,935	126,123	137,380
Non-cash adjustments for straight-line rents, amortization of acquired below-market leases, net, and other	1,810	2,043	3,056	4,802
NOI at share - cash basis	$ 37,171	$ 57,978	$ 129,179	$ 142,182