Segment Information (Reconciliation of Net Income to NOI) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting [Abstract]
Net (loss) income	$ (382,612)	$ 207,553	$ (461,845)
Depreciation and amortization expense	504,502	412,347	399,695
General and administrative expense	133,731	134,545	181,509
Impairment losses, transaction related costs and other	31,722	13,815	174,027
Loss (income) from partially owned entities	461,351	(130,517)	329,112
(Income) loss from real estate fund investments	(3,541)	(11,066)	226,327
Interest and other investment (income) loss, net	(19,869)	(4,612)	5,499
Interest and debt expense	279,765	231,096	229,251
Net gains on disposition of wholly owned and partially owned assets	(100,625)	(50,770)	(381,320)
Income tax expense (benefit)	21,660	(10,496)	36,630
NOI from partially owned entities	305,993	310,858	306,495
NOI attributable to noncontrolling interests in consolidated subsidiaries	(70,029)	(69,385)	(72,801)
NOI at share	1,162,048	1,033,368	972,579
Non-cash adjustments for straight-line rents, amortization of acquired below-market leases, net and other	(10,980)	1,318	46,246
NOI at share - cash basis	$ 1,151,068	$ 1,034,686	$ 1,018,825