Investments in Unconsolidated Joint Ventures (Statements of Operations of the Joint Ventures) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021		Mar. 30, 2021
Schedule of Equity Method Investments [Line Items]
Total revenue		$ 790,523	$ 730,056	$ 2,318,757	$ 2,157,558
Expenses
Transaction costs		1,650	1,888	2,146	2,970
Depreciation and amortization		190,675	179,412	551,445	539,815
Total expenses		518,994	481,093	1,520,810	1,442,241
Other income (expense)
Loss from early extinguishment of debt		0	0	0	(898)
Interest expense		(111,846)	(105,794)	(317,216)	(320,015)
Gains on sales of real estate		262,345	348	381,293	8,104
Net income		420,661	139,250	864,861	408,647
Income (Loss) from Equity Method Investments		(3,524)	(5,597)	(1,389)	(1,745)
Write-off (reinstatement) for accrued rent and accounts receivables		0	0	(1,500)	1,300
Above and below market rent adjustments, net				4,200
Unconsolidated Joint Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Total revenue	[1]	127,996	90,009	373,358	268,501
Expenses
Operating		52,886	40,378	143,880	114,299
Transaction costs		(65)	0	746	7
Depreciation and amortization		44,132	36,036	132,089	103,766
Total expenses		96,953	76,414	276,715	218,072
Other income (expense)
Loss from early extinguishment of debt		0	0	(1,327)	0
Interest expense		(40,678)	(27,519)	(103,270)	(78,711)
Net income		(9,635)	(13,924)	(7,954)	(28,282)
Company's share of net income		(2,251)	(4,491)	2,225	(10,268)
Gain on Sale of Investments		0	0	0	10,257	[2]
Basis differential	[3]	(1,273)	(1,106)	(3,614)	(1,734)
Income (Loss) from Equity Method Investments		(3,524)	(5,597)	(1,389)	(1,745)
Straight Line Rent Adjustments		(9,600)	(5,500)	(54,900)	(11,600)
Write-off (reinstatement) for accrued rent and accounts receivables				(2,500)
Annapolis Junction NFM, LLC [Member]
Other income (expense)
Gain on Sale of Investments					10,300
Ownership Percentage							50.00%
Colorado Center [Member]
Other income (expense)
Straight Line Rent Adjustments		100	100	300	700
Above and below market rent adjustments, net		$ 100	$ 100	$ 300	$ 200

[1] Includes straight-line rent adjustments of approximately $9.6 million and $5.5 million for the three months ended September 30, 2022 and 2021, respectively, and approximately $54.9 million and $11.6 million for the nine months ended September 30, 2022 and 2021, respectively. For the nine months ended September 30, 2022, reinstatement of accrued rent balances totaled approximately $2.5 million

[2] During the nine months ended September 30, 2021, the Company completed the sale of its 50% ownership interest in Annapolis Junction NFM LLC. The Company recognized a gain on sale of investment of approximately $10.3 million.

[3] Includes straight-line rent adjustments of approximately $0.1 million for each of the three months ended September 30, 2022 and 2021, and approximately $0.3 million and $0.7 million for the nine months ended September 30, 2022 and 2021, respectively. Also includes net above-/below-market rent adjustments of approximately $0.1 million for each of the three months ended September 30, 2022 and 2021, and approximately $0.3 million and $0.2 million for the nine months ended September 30, 2022 and 2021, respectively.