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Organization (Details)
Jun. 05, 2019
Jun. 30, 2019
ft²
property
Business Acquisition [Line Items]    
Number of real estate properties (in properties) | property   56
Area of real estate property (in square feet) | ft²   16,546,217
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   55
Area of real estate property (in square feet) | ft²   15,091,210
Office Segment    
Business Acquisition [Line Items]    
Number of real estate properties (in properties) | property   52
Area of real estate property (in square feet) | ft²   13,866,807
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   1,455,007