Basis of Presentation and Significant Accounting Policies - Summary of Characterization of Dividend Distributions for Federal Income Tax Purposes (Parenthetical) (Details) - $ / shares	3 Months Ended	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Income Taxes [Line Items]
Cash dividend	$ 0.035	$ 0.0775
Split year dividend per share			$ 0.007075	$ 0.070425

Aggregate split year cash dividend paid per share that is attributable to the current period for federal income tax purposes.

No definition available.

Name:	pgre_SplitYearDividendPerShareAttributableToCurrentPeriod
Namespace Prefix:	pgre_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration