Investment In and Advances in Real Estate Joint Ventures - Investment and Advances to Real Estate Joint Ventures - Income Statements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenues, net	$ 2,037,014	$ 1,783,400	$ 1,727,684
Operating expenses	(1,409,200)	(1,219,599)	(1,177,399)
Depreciation and amortization	(603,685)	(507,265)	(505,000)
Interest expense	(307,806)	(250,201)	(226,823)
Other income/(expense), net	57,605	39,960	28,829
Net income attributable to the Company	410,785	654,273	125,976
Impairment charges	(4,476)	(14,043)	(21,958)
Net income	419,439	665,949	114,534
KIR [Member]
Revenues, net	179,300	174,100	182,500
Operating expenses	(47,200)	(46,700)	(48,200)
Depreciation and amortization	(40,300)	(38,500)	(39,400)
Gain on sale of properties	0	0	76,200
Interest expense	(16,800)	(16,800)	(15,500)
Other income/(expense), net	0	(600)	(1,200)
Net income attributable to the Company	75,000	71,500	154,400
Excluding KIR [Member]
Revenues, net	498,200	378,400	395,200
Operating expenses	(161,200)	(126,600)	(126,900)
Depreciation and amortization	(163,200)	(108,200)	(119,000)
Gain on sale of properties	7,700	48,000	24,700
Interest expense	(70,700)	(55,400)	(38,600)
Other income/(expense), net	3,300	(6,400)	(6,200)
Impairment charges	(100)	(17,800)	(21,100)
Net income	$ 114,000	$ 112,000	$ 108,100