Segment Information (Summary of NOI by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Information
Total revenues	$ 457,431	$ 409,212	$ 1,353,055	$ 1,168,130
Operating expenses	(221,596)	(212,699)	(660,434)	(594,598)
NOI - consolidated	235,835	196,513	692,621	573,532
Deduct: NOI attributable to noncontrolling interests in consolidated subsidiaries	(14,766)	(16,886)	(51,100)	(50,221)
Add: NOI from partially owned entities	76,020	75,644	228,772	231,635
NOI at share	297,089	255,271	870,293	754,946
Non-cash adjustments for straight-line rents, amortization of acquired below-market leases, net, and other	(1,419)	1,922	(8,824)	1,570
NOI at share - cash basis	295,670	257,193	861,469	756,516
New York
Segment Information
Total revenues	360,033	316,643	1,082,743	921,758
Operating expenses	(182,131)	(151,276)	(536,238)	(468,294)
NOI - consolidated	177,902	165,367	546,505	453,464
Deduct: NOI attributable to noncontrolling interests in consolidated subsidiaries	(8,691)	(9,747)	(32,708)	(26,841)
Add: NOI from partially owned entities	71,943	73,219	219,116	224,392
NOI at share	241,154	228,839	732,913	651,015
Non-cash adjustments for straight-line rents, amortization of acquired below-market leases, net, and other	(3,462)	783	(13,626)	351
NOI at share - cash basis	237,692	229,622	719,287	651,366
Other
Segment Information
Total revenues	97,398	92,569	270,312	246,372
Operating expenses	(39,465)	(61,423)	(124,196)	(126,304)
NOI - consolidated	57,933	31,146	146,116	120,068
Deduct: NOI attributable to noncontrolling interests in consolidated subsidiaries	(6,075)	(7,139)	(18,392)	(23,380)
Add: NOI from partially owned entities	4,077	2,425	9,656	7,243
NOI at share	55,935	26,432	137,380	103,931
Non-cash adjustments for straight-line rents, amortization of acquired below-market leases, net, and other	2,043	1,139	4,802	1,219
NOI at share - cash basis	$ 57,978	$ 27,571	$ 142,182	$ 105,150