Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Reconciliation of NOI to net income
Net income	$ 147,717	$ 279,709	$ 486,592	$ 618,432
Indirect operating expenses, net of corporate income	23,837	20,195	70,043	62,935
Expensed transaction, development and other pursuit costs, net of recoveries	567	175	4,289	2,562
Interest expense, net	53,249	51,493	162,562	149,395
(Gain) loss on extinguishment of debt, net	(105)	93	9,333	602
General and administrative expense	13,985	12,769	46,878	45,440
Equity in income of unconsolidated real estate entities	(5,083)	(1,643)	(6,770)	(780)
Depreciation expense	175,348	165,463	529,508	490,213
Income tax (benefit) expense	(27)	11,184	(1,069)	11,178
Gain on sale of communities	(31,607)	(130,484)	(91,338)	(165,849)
Gain on other real estate transactions, net	(129)	(73)	(328)	(374)
Gain on for-sale condominiums, net of marketing and administrative costs	646	1,108	(4,162)	2,526
Net operating income from real estate assets sold or held for sale	(720)	(3,404)	(3,572)	(16,161)
Net operating income	$ 377,678	$ 406,585	$ 1,201,966	$ 1,200,119