Segments - Schedule of Total Assets for Each Reportable Segments Information (Details) - USD ($) $ in Thousands	Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Segment Reporting Information [Line Items]
Total assets	$ 8,554,097	[1]	$ 8,734,135	[1]	$ 8,755,978
New York [Member]
Segment Reporting Information [Line Items]
Total assets	5,388,596		5,439,929		5,583,022
San Francisco [Member]
Segment Reporting Information [Line Items]
Total assets	2,698,983		2,708,463		2,388,094
Other [Member]
Segment Reporting Information [Line Items]
Total assets	$ 466,518		$ 585,743		$ 784,862

[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 91.3% as of December 31, 2020. The assets and liabilities of the Operating Partnership, as of December 31, 2020, include $4,025,387 and $2,546,914 of assets and liabilities, respectively, of certain VIEs that are consolidated by the Operating Partnership. See Note 11, Variable Interest Entities (“VIEs”).