Investments in Unconsolidated Joint Ventures (Statements of Operations of the Joint Ventures) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Schedule of Equity Method Investments [Line Items]
Total revenue		$ 817,153	$ 773,927	$ 1,620,353	$ 1,528,234
Expenses
Transaction costs		308	496	1,219	496
Depreciation and amortization		202,577	183,146	411,311	360,770
Total expenses		550,866	501,838	1,119,527	1,001,816
Other income (expense)
Interest expense		(142,473)	(104,142)	(276,680)	(205,370)
Gains on sales of real estate		0	96,247	0	118,948
Net income		136,184	267,243	241,812	444,200
Income (Loss) from Equity Method Investments		(6,668)	(54)	(14,237)	2,135
Unconsolidated Joint Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Total revenue	[1]	164,771	120,871	316,194	245,362
Expenses
Operating		61,023	45,353	118,229	90,994
Transaction costs		27	811	101	811
Depreciation and amortization		51,233	43,293	101,211	87,957
Total expenses		112,283	89,457	219,541	179,762
Other income (expense)
Losses from early extinguishment of debt		(3)	0	(3)	(1,327)
Interest expense		(58,799)	(32,219)	(116,049)	(62,592)
Unrealized gain on derivative instruments		14,457	0	(3,847)	0
Net income		8,143	(805)	(15,552)	1,681
Company's share of net income (loss)		639	1,082	(6,263)	4,476
Basis differential	[2]	(7,307)	(1,136)	(7,974)	(2,341)
Income (Loss) from Equity Method Investments		(6,668)	(54)	(14,237)	2,135
Straight Line Rent Adjustments		6,900	17,800	13,200	45,300
Above and below market rent adjustments, net		200	100	400	200
Colorado Center [Member] | Unconsolidated Joint Ventures [Member]
Other income (expense)
Straight Line Rent Adjustments		$ 400	$ 100	$ 700	$ 200

[1] Includes straight-line rent adjustments of approximately $6.9 million and $17.8 million for the three months ended June 30, 2023 and 2022, respectively, and approximately $13.2 million and $45.3 million for the six months ended June 30, 2023 and 2022, respectively.

[2] Includes straight-line rent adjustments of approximately $0.4 million and $0.1 million for the three months ended June 30, 2023 and 2022, respectively, and approximately $0.7 million and $0.2 million for the six months ended June 30, 2023 and 2022, respectively. Also includes net above-/below-market rent adjustments of approximately $0.2 million and $0.1 million for the three months ended June 30, 2023 and 2022, respectively, and approximately $0.4 million and $0.2 million for the six months ended June 30, 2023 and 2022.