Segment Information (Net (Loss) Income to NOI Reconciliation) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting [Abstract]
Net (loss) income	$ (19,468)	$ 59,570	$ 14,358	$ 133,501
Depreciation and amortization expense	116,006	110,349	334,439	324,076
General and administrative expense	35,511	35,838	111,883	116,843
Transaction related costs and other	(113)	813	3,901	1,501
Income from partially owned entities	(18,229)	(18,269)	(82,457)	(72,207)
Interest and other investment income, net	(12,391)	(14,717)	(34,626)	(37,454)
Interest and debt expense	100,907	88,126	289,786	261,528
Net gains on disposition of wholly owned and partially owned assets	0	(56,136)	(16,048)	(64,592)
Income tax expense	4,883	11,684	16,907	20,848
NOI from partially owned entities	67,292	72,100	205,959	210,942
NOI attributable to noncontrolling interests in consolidated subsidiaries	(8,907)	(8,363)	(29,316)	(38,869)
NOI at share	265,491	280,995	814,786	856,117
Non-cash adjustments for straight-line rents, amortization of acquired below-market leases, net, and other	6,807	(2,980)	4,715	(3,498)
NOI at share - cash basis	$ 272,298	$ 278,015	$ 819,501	$ 852,619