Investments in Unconsolidated Joint Ventures - Summary of Financial Information of 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	Dec. 31, 2020
Schedule Of Equity Method Investments [Line Items]
Total assets	[1]	$ 8,533,140		$ 8,533,140		$ 8,554,097
Total liabilities	[1]	4,053,017		4,053,017		4,038,363
Equity		3,600,279		3,600,279		3,653,177
Total liabilities and equity		8,533,140		8,533,140		8,554,097
Rental revenue		174,628	$ 163,989	347,774	$ 339,414
Other income		1,440	920	2,790	3,151
Total revenues		182,269	171,118	363,435	355,104
Operating		64,072	64,313	130,690	131,327
Depreciation and amortization		59,925	58,716	118,230	117,143
Total expenses		142,550	141,188	282,118	279,081
Interest and other (loss) income		1,070	2,252	2,372	1,256
Interest and debt expense		(34,914)	(36,009)	(69,653)	(72,628)
Net loss before income taxes		(9,694)	(9,693)	(6,669)	(5,384)
Income tax benefit (expense)		(434)	(138)	(1,575)	(742)
Net loss attributable to common stockholders		(15,943)	(6,270)	(19,521)	(2,922)
Unconsolidated Joint Ventures [Member]
Schedule Of Equity Method Investments [Line Items]
Real estate, net		2,709,681		2,709,681		2,674,858
Cash and cash equivalents and restricted cash		173,497		173,497		120,149
Intangible assets, net		83,907		83,907		110,307
Other assets		45,704		45,704		45,761
Total assets		3,012,789		3,012,789		2,951,075
Notes and mortgages payable, net		1,871,120		1,871,120		1,801,084
Intangible liabilities, net		22,524		22,524		26,772
Other liabilities		71,917		71,917		87,575
Total liabilities		1,965,561		1,965,561		1,915,431
Equity		1,047,228		1,047,228		1,035,644
Total liabilities and equity		3,012,789		3,012,789		$ 2,951,075
Rental revenue		57,195	59,136	113,723	121,583
Other income		581	777	1,338	1,524
Total revenues		57,776	59,913	115,061	123,107
Operating		25,467	29,642	50,577	55,582
Depreciation and amortization		27,014	29,099	54,467	59,281
Total expenses		52,481	58,741	105,044	114,863
Interest and other (loss) income		(23)	(29)	(56)	48
Interest and debt expense		(13,892)	(14,305)	(27,632)	(30,214)
Net loss before income taxes		(8,620)	(13,162)	(17,671)	(21,922)
Income tax benefit (expense)		1	(5)	(15)	(44)
Net loss attributable to common stockholders		$ (8,619)	$ (13,167)	$ (17,686)	$ (21,966)

[1] Represents the consolidated assets and liabilities of Paramount Group Operating Partnership LP, a Delaware limited partnership (the “Operating Partnership”). The Operating Partnership is a consolidated variable interest entity (“VIE”), of which we are the sole general partner and own approximately 91.0% as of June 30, 2021. As of June 30, 2021, the Operating Partnership includes $4,053,771 and $2,560,820 of assets and liabilities, respectively, of certain VIEs that are consolidated by the Operating Partnership. See Note 11, Variable Interest Entities (“VIEs”).