Economic interest percentage.

No definition available.

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- Definition

Gain loss from sale of equity interest in real estate asset, by real estate funds.

+ References

No definition available.

+ Details

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- Definition

Gain loss from sale of equity interest in real estate asset, by real estate funds attributable to entity net of tax.

+ References

No definition available.

+ Details

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- Definition

Ownership interest in real estate funds.

+ References

No definition available.

+ Details

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- Definition

Ownership interest percentage in property.

+ References

No definition available.

+ Details

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- Definition

Sale of equity interest percentage in real estate asset, by real estate funds.

+ References

No definition available.

+ Details

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- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477

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- 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

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Balance Type:	na
Period Type:	instant

- Definition

Total amount of new mortgage loans on real estate during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29.6)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow from the sale of real estate held-for-investment and real estate joint ventures.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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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- Details

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- Details

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

- Details

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Investments in Unconsolidated Joint Ventures - Additional Information (Details) ft² in Millions			6 Months Ended
	May 05, 2017 USD ($)	Jan. 24, 2017 USD ($) ft²	Jun. 30, 2017 ft²	May 04, 2017	Dec. 31, 2016 ft²
Schedule Of Equity Method Investments [Line Items]
Area of office and retail properties \| ft²			11.8
60 Wall Street [Member]
Schedule Of Equity Method Investments [Line Items]
Property ownership, percentage		5.00%
Area of office and retail properties \| ft²		1.6			1.6
Acquisition amount		$ 1,040,000,000
Mortgage financing amount		$ 575,000,000
Equity method ownership percentage			5.00%
75 Howard [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method ownership percentage			20.00%
75 Howard [Member] \| RDF [Member]
Schedule Of Equity Method Investments [Line Items]
Property ownership, percentage				100.00%
Percentage of equity interest sold by development fund	80.00%
Proceeds from sale of equity interest, by development fund	$ 88,000,000
Gain from sale of equity interest, by development fund	23,406,000
Entity's portion of gain from sale of equity interest, net of tax	$ 1,661,000
Equity method ownership percentage	20.00%
Ownership percentage in residential fund	7.40%		7.40%
Economic interest percentage	1.50%		1.50%