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Organization - Narrative (Details) $ in Millions |  | 3 Months Ended
--- | --- | ---
Apr. 01, 2015 USD ($) ft² project property shares | Mar. 31, 2017 ft² property
Business Acquisition [Line Items] |  |
Number of real estate properties acquired (in properties) |  | 0
Area of real estate property (in square feet) | ft² |  | 199,484
Office Properties |  |
Business Acquisition [Line Items] |  |
Number of real estate properties (in properties) |  | 52
Media and Entertainment Properties |  |
Business Acquisition [Line Items] |  |
Number of real estate properties (in properties) |  | 2
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) | 26 |
EOP Northern California Portfolio | Development Parcel |  |
Business Acquisition [Line Items] |  |
Number of development projects acquired (in projects) | project | 2 |

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