Segment Reporting - Reconciliation of NOI to Net Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Reconciliation of NOI to net income
Net income	$ 262,076	$ 142,234
Property management and other indirect operating expenses, net of corporate income	28,113	24,470
Expensed transaction, development and other pursuit costs, net of recoveries	987	(170)
Interest expense, net	56,526	52,613
Gain on extinguishment of debt, net	0	122
General and administrative expense	17,421	17,352
(Income) loss from investments in unconsolidated entities	(317)	467
Depreciation expense	201,786	183,297
Income tax expense (benefit)	2,471	(755)
Gain on sale of communities	(148,800)	(53,727)
Gain on other real estate transactions, net	(37)	(427)
Net for-sale condominium activity	(236)	913
Net operating income from real estate assets sold or held for sale	(1,699)	(11,247)
Net operating income	$ 418,291	$ 354,898
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)	2.00%	1.50%