Segment Information (Schedule of Net Income (Loss) to NOI Reconciliation) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting [Abstract]
NOI at share	$ 266,676	$ 265,491	$ 837,639	$ 814,786
NOI attributable to noncontrolling interests in consolidated subsidiaries	10,139	8,907	31,442	29,316
NOI from partially owned entities	(64,884)	(67,292)	(198,222)	(205,959)
Net gains on disposition of wholly owned and partially owned assets	0	0	24,039	16,048
Gain on sales-type lease	0	0	803,248	0
Interest and debt expense	(84,459)	(100,907)	(268,204)	(289,786)
Interest and other investment income, net	22,413	12,391	41,730	34,626
Income from partially owned entities	21,940	18,229	135,588	82,457
Transaction related costs and other	(3,563)	113	(4,327)	(3,901)
General and administrative expense	(37,490)	(35,511)	(116,065)	(111,883)
Depreciation and amortization expense	(117,122)	(116,006)	(348,851)	(334,439)
Income (loss) before income taxes	$ 13,650	$ (14,585)	$ 938,017	$ 31,265