Reportable Segments - Reconciliation of NOI from Rental Real Estate Specific to Continuing Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Rental income	$ 695,099	$ 623,206	$ 2,035,477	$ 1,818,867
Property and maintenance expense	(124,048)	(116,461)	(365,277)	(341,261)
Real estate taxes and insurance expense	(100,361)	(96,909)	(302,899)	(297,780)
Operating income	414,011	521,554	873,683	1,033,958
Same Store, Non-same Store and Other
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Rental income	695,099	623,206	2,035,477	1,818,867
Property and maintenance expense	(124,048)	(116,461)	(365,277)	(341,261)
Real estate taxes and insurance expense	(100,361)	(96,909)	(302,899)	(297,780)
Total operating expenses	(224,409)	(213,370)	(668,176)	(639,041)
Operating income	$ 470,690	$ 409,836	$ 1,367,301	$ 1,179,826