Reportable Segments - Reconciliation of Net Income to Net Operating Income (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Net income		$ 278,996	$ 238,114	$ 152,683
Net operating income from unconsolidated joint ventures		19,223	18,836	32,413
Total Revenues		(755,073)	(740,340)	(657,515)
Reimbursed expenses		2,476	1,580	4,004
General and administrative expenses		29,321	27,034	37,007
Interest expense		67,027	60,605	53,963
Impairment	$ 14,800	0	14,829	0
Depreciation and amortization		288,092	288,648	257,149
Transaction costs		0	428	52,881
Other expenses		2,131	2,091	1,109
Income from unconsolidated joint ventures		(6,801)	(7,947)	(12,666)
Gain on sale of investment in unconsolidated joint ventures		(13,083)	(45,767)	0
Gain on investment property transactions		(152,547)	(90,125)	(110,761)
Net Operating Income		493,720	486,034	431,790
Fee income
Segment Reporting Information [Line Items]
Total Revenues		(15,559)	(18,226)	(28,518)
Termination fee income
Segment Reporting Information [Line Items]
Total Revenues		(5,105)	(3,835)	(7,228)
Other income
Segment Reporting Information [Line Items]
Total Revenues		$ (451)	$ (231)	$ (246)