Investments in Unconsolidated Joint Ventures - Schedules of Combined Financial Statements for the Unconsolidated Joint Ventures (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Assets
Commercial real estate property, net		$ 5,588,345		$ 5,588,345			$ 5,399,002
Cash and restricted cash		257,941	$ 221,404	257,941	$ 221,404		266,059
Tenant and other receivables, related party receivables, and deferred rents receivable		44,964		44,964			44,507
Other assets		347,407		347,407			448,213
Total assets	[1]	10,855,859		10,855,859			11,707,567
Liabilities and equity
Mortgages and other loans payable, net		1,422,287		1,422,287			1,979,972
Lease liabilities		437,357		437,357			339,458
Other liabilities		157,375		157,375			302,798
Equity		5,082,215	5,134,005	5,082,215	5,134,005	$ 4,813,757	4,935,795	$ 5,205,762	$ 5,517,198
Total liabilities and equity/capital		10,855,859		10,855,859			11,707,567
Company's investments in unconsolidated joint ventures		3,028,084		3,028,084			3,823,322
Investments difference between carrying amount and underlying equity		429,200		429,200
Combined statements of income for the unconsolidated joint ventures
Total revenues		205,201	249,844	649,410	817,846
Operating expenses		40,684	45,910	126,851	140,673
Real estate taxes		32,139	43,522	121,318	131,805
Interest expense before capitalized interest		34,054	42,595	112,423	144,345
Amortization of deferred financing costs		2,345	3,151	9,505	8,312
Depreciation and amortization		49,277	92,516	169,534	256,736
Total expenses		169,476	248,212	573,007	744,980
Net income		415,534	20,677	528,813	214,418
Company's equity in net (loss) income from unconsolidated joint ventures		(15,487)	(432)	(31,321)	(15,445)
Joint venture
Assets
Commercial real estate property, net		14,720,722		14,720,722			16,143,880
Cash and restricted cash		791,702		791,702			357,076
Tenant and other receivables, related party receivables, and deferred rents receivable		506,129		506,129			403,883
Other assets		1,840,483		1,840,483			2,001,612
Total assets		17,859,036		17,859,036			18,906,451
Liabilities and equity
Mortgages and other loans payable, net		11,023,009		11,023,009			9,749,204
Deferred revenue		1,216,079		1,216,079			1,341,571
Lease liabilities		982,309		982,309			1,002,563
Other liabilities		308,300		308,300			464,107
Equity		4,329,339		4,329,339			6,349,006
Total liabilities and equity/capital		17,859,036		17,859,036			$ 18,906,451
Company's investments in unconsolidated joint ventures		3,028,084		3,028,084
Combined statements of income for the unconsolidated joint ventures
Total revenues		314,288	292,929	905,017	846,967
Operating expenses		54,157	44,650	142,800	131,578
Real estate taxes		58,367	56,459	166,974	161,566
Operating lease, rent		5,644	6,385	16,931	18,947
Interest expense before capitalized interest		90,710	79,723	248,588	245,685
Amortization of deferred financing costs		10,661	5,575	24,249	15,197
Depreciation and amortization		119,537	103,262	351,372	300,700
Total expenses		339,076	296,054	950,914	873,673
Loss on early extinguishment of debt		(1,158)	0	(2,484)	0
Net income		(25,946)	(3,125)	(48,381)	(26,706)
Company's equity in net (loss) income from unconsolidated joint ventures		(15,487)	(432)	(31,321)	(15,445)
Management Service, Base | Joint venture
Investment in Unconsolidated Joint Ventures
Management fees, base revenue		$ 5,300	$ 2,200	$ 12,000	$ 6,100

[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: $316.0 million and $41.2 million of land, $341.2 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, $18.5 million and $10.3 million of accumulated depreciation, $293.8 million and $289.5 million of other assets included in other line items, $450.1 million and $94.0 million of real estate debt, net, $1.3 million and $0.7 million of accrued interest payable, $45.4 million and $29.9 million of lease liabilities, and $24.9 million and $56.6 million of other liabilities included in other line items as of September 30, 2021 and December 31, 2020, respectively.