This item represents the entity's proportionate share for the period of the net income (loss) of its real estate fund investments to which equity method of accounting is applied.

No definition available.

+ Details

Name:	pgre_IncomeLossFromUnconsolidatedRealEstateFund
Namespace Prefix:	pgre_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Ownership percentage in investment funds.

+ References

No definition available.

+ Details

Name:	pgre_OwnershipPercentageInInvestmentFunds
Namespace Prefix:	pgre_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The carrying amount of investments in unconsolidated real estate and other joint ventures not separately presented. This includes direct and indirect investments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1)(d))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

+ Details

Name:	us-gaap_RealEstateInvestmentsUnconsolidatedRealEstateAndOtherJointVentures
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 976
-SubTopic 310
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482856/976-310-50-1

+ Details

Name:	us-gaap_RealEstateLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_InvestmentTypeAxis=pgre_PropertyFundVIIIMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InvestmentTypeAxis=pgre_PropertyFundXLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Investments in Unconsolidated Real Estate Related Funds - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Dec. 11, 2022
Real Estate [Line Items]
Investments in the unconsolidated real estate related funds	$ 4,537,000		$ 4,537,000		$ 3,411,000
(Loss) income from unconsolidated real estate related funds	$ (721,000)	$ 300,000	$ (867,000)	$ 625,000
Fund VIII [Member]
Real Estate [Line Items]
Alternative Investment Fund Ownership Interest Percentage	1.30%		1.30%
Fund X [Member]
Real Estate [Line Items]
Alternative Investment Fund Ownership Interest Percentage						8.20%