Investments in Unconsolidated Real Estate Related Funds - Additional Information (Details) - USD ($)	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Real Estate [Line Items]
Investments in the unconsolidated real estate related funds	$ 4,603,000		$ 4,549,000
(Loss) income from unconsolidated real estate related funds	$ 105,000	$ (178,000)
Fund VIII [Member]
Real Estate [Line Items]
Alternative Investment Fund Ownership Interest Percentage	1.30%

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

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Namespace Prefix:	pgre_
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Balance Type:	credit
Period Type:	duration

- Definition

Ownership percentage in investment funds.

+ References

No definition available.

+ Details

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Namespace Prefix:	pgre_
Data Type:	dtr-types:percentItemType
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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

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- 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

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- Details

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