Segment Reporting - Reconciliation of NOI to Net Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Reconciliation of NOI to net income
Net income	$ 367,807	$ 138,566	$ 514,582	$ 400,642
Property management and other indirect operating expenses, net of corporate income	28,972	30,632	59,756	58,745
Expensed transaction, development and other pursuit costs, net of recoveries	1,261	2,364	4,253	3,351
Interest expense, net	51,585	58,797	108,406	115,323
General and administrative expense	17,676	21,291	38,076	38,712
Income from unconsolidated investments	(4,970)	(2,480)	(9,815)	(2,797)
Depreciation expense	200,546	199,302	405,289	401,088
Income tax (benefit) expense	(217)	(159)	3,343	2,312
Casualty loss	0	0	5,051	0
Gain on sale of communities	(187,322)	(404)	(187,309)	(149,204)
Other real estate activity	(341)	28	(470)	(245)
Net operating income from real estate assets sold or held for sale	(3,977)	(12,252)	(8,781)	(25,521)
Net operating income	$ 471,020	$ 435,685	$ 932,381	$ 842,406
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)	1.80%	1.70%	1.80%	1.90%