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Organization (Details)	Jun. 05, 2019	Sep. 30, 2019 ft² property
Business Acquisition [Line Items]
Number of real estate properties (in properties) | property		55
Area of real estate property (in square feet) | ft²		16,076,881
VIE, Not Primary Beneficiary | Joint Venture, Blackstone Property Partners
Business Acquisition [Line Items]
Ownership Interest	20.00%
Consolidated Portfolio
Business Acquisition [Line Items]
Number of real estate properties (in properties) | property		54
Area of real estate property (in square feet) | ft²		14,600,797
Office Segment
Business Acquisition [Line Items]
Number of real estate properties (in properties) | property		51
Area of real estate property (in square feet) | ft²		13,376,394
Studios
Business Acquisition [Line Items]
Number of real estate properties (in properties) | property		3
Area of real estate property (in square feet) | ft²		1,224,403
Unconsolidated office
Business Acquisition [Line Items]
Number of real estate properties (in properties) | property		1
Area of real estate property (in square feet) | ft²		1,476,084

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Net rentable area for properties owned.

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The number of real estate properties owned as of the balance sheet date.

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Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=118582676&loc=SL6759159-111685

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