Co-investments - Combined Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Equity Method Investment, Financial Statement, Reported Amounts [Abstract]
Rental properties and real estate under development	$ 23,067		$ 23,067			$ 24,857
Total assets	12,497,647		12,497,647			12,372,905
Debt	6,761,240		6,761,240			6,450,639
Other liabilities	45,972		45,972			43,441
Equity	5,706,447	$ 5,881,197	5,706,447	$ 5,881,197	$ 5,762,005	5,895,116	$ 6,006,585	$ 6,176,508
Total liabilities and equity	12,497,647		12,497,647			12,372,905
Equity Method Investment, Summarized Financial Information [Abstract]
Property revenues	419,183	409,748	1,247,647	1,191,631
Interest expense	(54,161)	(51,645)	(157,806)	(152,499)
General and administrative	(14,611)	(15,172)	(43,735)	(40,541)
Net income	93,009	98,700	360,359	238,765
Related Party | Total co-investment
Equity Method Investment, Summarized Financial Information [Abstract]
Company's share of net income	2,000	1,800	5,900	5,400
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Equity Method Investment, Financial Statement, Reported Amounts [Abstract]
Rental properties and real estate under development	5,099,914		5,099,914			4,955,051
Other assets	286,663		286,663			294,663
Total assets	5,386,577		5,386,577			5,249,714
Debt	3,561,368		3,561,368			3,397,113
Other liabilities	330,099		330,099			264,872
Equity	1,495,110		1,495,110			1,587,729
Total liabilities and equity	5,386,577		5,386,577			5,249,714
Company's share of equity	1,082,829		1,082,829			$ 1,084,959
Equity Method Investment, Summarized Financial Information [Abstract]
Property revenues	103,379	94,791	303,926	272,967
Property operating expenses	(37,603)	(36,950)	(116,549)	(102,252)
Net operating income	65,776	57,841	187,377	170,715
Interest expense	(41,802)	(27,507)	(111,800)	(67,588)
General and administrative	(1,635)	(5,028)	(13,171)	(15,387)
Depreciation and amortization	(44,704)	(42,200)	(129,009)	(120,388)
Net income	(22,365)	(16,894)	(66,603)	(32,648)
Company's share of net income	$ 10,694	$ 10,985	$ 33,802	$ 23,756