Minority interest ownership percentage remaining.

No definition available.

Name:	pgre_MinorityInterestOwnershipPercentageRemaining
Namespace Prefix:	pgre_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Ownership interest percentage in property.

+ References

No definition available.

+ Details

Name:	pgre_OwnershipInterestPercentageInProperty
Namespace Prefix:	pgre_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Ownership percentage for tenants in common interest in property.

+ References

No definition available.

+ Details

Name:	pgre_OwnershipPercentageForTenantsInCommonInterestInProperty
Namespace Prefix:	pgre_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Predecessor ownership percentage of property.

+ References

No definition available.

+ Details

Name:	pgre_PredecessorOwnershipPercentageOfProperty
Namespace Prefix:	pgre_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Minimum duration of a put right notice required to be provided by the partner to exercise the put right.

+ References

No definition available.

+ Details

Name:	pgre_PutRightNoticePeriod
Namespace Prefix:	pgre_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Right to acquire joint venture interests in property, amount.

+ References

No definition available.

+ Details

Name:	pgre_RightToAcquireJointVentureInterestsInPropertyAmount
Namespace Prefix:	pgre_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

Name:	us-gaap_AreaOfRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
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

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_RealEstatePropertiesAxis=pgre_SixZeroWallStreetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=pgre_SevenOneEightFifthAvenueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=pgre_SevenOneTwoFifthAvenueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=us-gaap_PredecessorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=pgre_ParamountGroupRealEstateFundIILPAndRealEstateFundIIILPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	pgre_OwnershipAxis=pgre_OwnedByAffiliateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=us-gaap_ParentCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=pgre_PutRightExercisedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=pgre_RetailTypeSpaceMember
Namespace Prefix:
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Commitments and Contingencies - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($) ft²	Jan. 24, 2017 ft²	Dec. 31, 2015	Nov. 23, 2014 ft²
Other Commitments [Line Items]
Prime retail space of building	10,800,000
60 Wall Street [Member]
Other Commitments [Line Items]
Right to acquire joint venture interests in property, amount \| $	$ 1,040
60 Wall Street [Member] \| Subsequent Event [Member]
Other Commitments [Line Items]
Prime retail space of building		1,600,000
Property ownership, percentage		5.20%
718 Fifth Avenue [Member]
Other Commitments [Line Items]
Put right notice period	12 months
712 Fifth Avenue [Member]
Other Commitments [Line Items]
Equity method ownership percentage	50.00%		50.00%
Predecessor [Member] \| 718 Fifth Avenue [Member]
Other Commitments [Line Items]
Percentage of tenancy-in-common interest in property				50.00%
Predecessor [Member] \| 712 Fifth Avenue [Member]
Other Commitments [Line Items]
Equity method ownership percentage				50.00%
Fund II and Fund III [Member] \| 60 Wall Street [Member]
Other Commitments [Line Items]
Remaining ownership percentage	37.70%
Owned by Affiliate [Member] \| Predecessor [Member] \| 718 Fifth Avenue [Member] \| Third Party Affiliate [Member]
Other Commitments [Line Items]
Equity method ownership percentage				25.00%
Owned by Affiliate [Member] \| Parent Company [Member] \| Put Right Exercised [Member] \| 718 Fifth Avenue [Member]
Other Commitments [Line Items]
Pre IPO ownership percentage				25.00%
Owned by Affiliate [Member] \| Fund II and Fund III [Member] \| 60 Wall Street [Member]
Other Commitments [Line Items]
Percentage of ownership in joint venture	62.30%
Owned by Affiliate [Member] \| Retail Type Space [Member] \| 60 Wall Street [Member]
Other Commitments [Line Items]
Prime retail space of building	1,600,000
Owned by Affiliate [Member] \| Retail Type Space [Member] \| Predecessor [Member] \| 718 Fifth Avenue [Member]
Other Commitments [Line Items]
Prime retail space of building				19,050