Investments in Unconsolidated Joint Ventures - Schedules of Combined Financial Statements for the Unconsolidated Joint Ventures (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Assets
Commercial real estate property, net		$ 5,655,976		$ 5,655,976			$ 5,399,002
Cash and restricted cash		218,337	$ 1,015,348	218,337	$ 1,015,348		266,059
Tenant and other receivables, related party receivables, and deferred rents receivable		40,147		40,147			44,507
Other assets		336,807		336,807			448,213
Total assets	[1]	11,166,164		11,166,164			11,707,567
Liabilities and equity
Mortgages and other loans payable, net		1,857,829		1,857,829			1,979,972
Lease liabilities		443,313		443,313			339,458
Other liabilities		193,321		193,321			302,798
Equity		4,813,757	5,205,762	4,813,757	5,205,762	$ 4,935,620	4,935,795	$ 5,343,965	$ 5,517,198
Total liabilities and equity/capital		11,166,164		11,166,164			11,707,567
Company's investments in unconsolidated joint ventures		3,209,151		3,209,151			3,823,322
Investments difference between carrying amount and underlying equity		186,500		186,500
Combined statements of income for the unconsolidated joint ventures
Total revenues		218,107	253,699	444,209	568,002
Operating expenses		43,883	40,897	86,167	94,763
Real estate taxes		43,768	41,661	89,179	88,283
Interest expense before capitalized interest		38,501	44,937	78,369	101,751
Amortization of deferred financing costs		3,386	2,661	7,160	5,161
Depreciation and amortization		57,261	95,941	120,257	164,220
Total expenses		196,032	249,757	403,531	496,768
Net income		117,134	66,627	113,279	193,741
Company's equity in net (loss) income from unconsolidated joint ventures		(12,970)	(2,199)	(15,834)	(15,013)
Joint venture
Assets
Commercial real estate property, net		14,588,601		14,588,601			16,143,880
Cash and restricted cash		1,279,021		1,279,021			357,076
Tenant and other receivables, related party receivables, and deferred rents receivable		425,129		425,129			403,883
Other assets		1,869,772		1,869,772			2,001,612
Total assets		18,162,523		18,162,523			18,906,451
Liabilities and equity
Mortgages and other loans payable, net		10,581,104		10,581,104			9,749,204
Deferred revenue		1,250,116		1,250,116			1,341,571
Lease liabilities		983,985		983,985			1,002,563
Other liabilities		350,062		350,062			464,107
Equity		4,997,256		4,997,256			6,349,006
Total liabilities and equity/capital		18,162,523		18,162,523			$ 18,906,451
Company's investments in unconsolidated joint ventures		3,209,151		3,209,151
Combined statements of income for the unconsolidated joint ventures
Total revenues		289,188	271,518	590,729	554,038
Operating expenses		42,410	35,338	88,643	86,928
Real estate taxes		54,015	51,735	108,607	105,107
Operating lease, rent		5,643	6,201	11,287	12,562
Interest expense before capitalized interest		79,129	79,638	157,878	165,962
Amortization of deferred financing costs		7,204	4,808	13,588	9,622
Depreciation and amortization		116,956	98,854	231,835	197,438
Total expenses		305,357	276,574	611,838	577,619
Net income		(17,495)	(5,056)	(22,435)	(23,581)
Company's equity in net (loss) income from unconsolidated joint ventures		(12,970)	(2,199)	(15,834)	(15,013)
Loss on early extinguishment of debt		(1,326)	0	(1,326)	0
Management Service, Base | Joint venture
Investment in Unconsolidated Joint Ventures
Management fees, base revenue		$ 4,200	$ 1,700	$ 6,800	$ 3,900

[1] The Company's consolidated balance sheets include assets and liabilities of consolidated variable interest entities ("VIEs"). See Note 2. The consolidated balance sheets include the following amounts related to our consolidated VIEs, excluding the Operating Partnership: $179.6 million and $41.2 million of land, $281.0 million and $57.9 million of building and improvements, $2.0 million and $2.0 million of building and leasehold improvements, $53.2 million and $37.8 million of right of use assets, $17.3 million and $10.3 million of accumulated depreciation, $291.4 million and $289.5 million of other assets included in other line items, $377.1 million and $94.0 million of real estate debt, net, $1.1 million and $0.7 million of accrued interest payable, $45.4 million and $29.9 million of lease liabilities, and $23.6 million and $56.6 million of other liabilities included in other line items as of June 30, 2021 and December 31, 2020, respectively.