Segment Reporting - Reconciliation of NOI to Net Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Reconciliation of NOI to net income
Net income	$ 171,790	$ 494,632	$ 686,372	$ 895,274
Property management and other indirect operating expenses, net of corporate income	30,421	29,374	90,177	88,119
Expensed transaction, development and other pursuit costs, net of recoveries	18,959	6,514	23,212	9,865
Interest expense, net	48,115	57,290	156,521	172,613
Gain (Loss) on Extinguishment of Debt	150	1,646	150	1,646
General and administrative expense	20,466	14,611	58,542	53,323
Income from unconsolidated investments	(1,930)	(43,777)	(11,745)	(46,574)
Depreciation expense	200,982	206,658	606,271	607,746
Income tax expense	4,372	5,651	7,715	7,963
Casualty loss	3,499	0	8,550	0
Gain on sale of communities	(22,121)	(318,289)	(209,430)	(467,493)
Other real estate activity	(237)	(319)	(707)	(564)
Net operating income from real estate assets sold or held for sale	(2,089)	(10,994)	(14,212)	(39,583)
Net operating income	$ 472,377	$ 442,997	$ 1,401,416	$ 1,282,335
Non-Apartment Components Of Mixed-Use Communities And Other Nonresidential Operations | Operating Income (Loss) | Product Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk (as a percent)	1.70%	2.40%	1.80%	2.10%