Segments - Schedule of Total Assets for Each Reportable Segments Information (Details) - USD ($) $ in Thousands	Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Segment Reporting Information [Line Items]
Total assets	$ 8,755,978	[1]	$ 8,917,661	[1]	$ 8,867,168
New York [Member]
Segment Reporting Information [Line Items]
Total assets	5,583,022		5,511,061		5,617,344
Washington, D.C. [Member]
Segment Reporting Information [Line Items]
Total assets	305,980		693,408		1,075,350
San Francisco [Member]
Segment Reporting Information [Line Items]
Total assets	2,388,094		2,421,173		1,913,747
Other [Member]
Segment Reporting Information [Line Items]
Total assets	$ 478,882		$ 292,019		$ 260,727

[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 90.3% as of December 31, 2018. The assets and liabilities of the Operating Partnership, as of December 31, 2018, include $1,982,679 and $1,253,414 of assets and liabilities, respectively, of certain VIEs that are consolidated by the Operating Partnership. See Note 14, Variable Interest Entities (“VIEs”).