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Organization (Details) $ in Millions | Apr. 01, 2015 USD ($) ft² property project shares | Sep. 30, 2018 ft² property
--- | --- | ---
Business Acquisition [Line Items] |  |
Area of real estate property (in square feet) | ft² |  | 14,745,260
Number of real estate properties (in properties) | property |  | 54
Office |  |
Business Acquisition [Line Items] |  |
Area of real estate property (in square feet) | ft² |  | 13,498,837
Number of real estate properties (in properties) | property |  | 51
Studio |  |
Business Acquisition [Line Items] |  |
Area of real estate property (in square feet) | ft² |  | 1,246,423
Number of real estate properties (in properties) | property |  | 3
EOP Northern California Portfolio |  |
Business Acquisition [Line Items] |  |
Area of real estate property (in square feet) | ft² | 8,200,000 |
Gross payments to acquire business | $ | $ 1,750 |
Consideration transferred, common units (in shares) | shares | 63,474,791 |
EOP Northern California Portfolio | Office Building |  |
Business Acquisition [Line Items] |  |
Number of real estate properties acquired (in properties) | property | 26 |
EOP Northern California Portfolio | Development Parcel |  |
Business Acquisition [Line Items] |  |
Number of development projects acquired (in projects) | project | 2 |

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