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Organization (Details) $ in Millions | Apr. 01, 2015 USD ($) ft² project property shares | Dec. 31, 2017 ft² property
--- | --- | ---
Business Acquisition [Line Items] |  |
Net rentable area (in square feet) | ft² |  | 14,541,458
Number of Properties | property |  | 54
Office |  |
Business Acquisition [Line Items] |  |
Net rentable area (in square feet) | ft² |  | 13,291,531
Number of Properties | property |  | 51
Media & Entertainment |  |
Business Acquisition [Line Items] |  |
Net rentable area (in square feet) | ft² |  | 1,249,927
Number of Properties | property |  | 3
EOP Northern California Portfolio |  |
Business Acquisition [Line Items] |  |
Net rentable area (in square feet) | ft² | 8,200,000 |
Payments to acquire businesses | $ | $ 1,750 |
Shares issued as consideration for business combination | shares | 63,474,791 |
EOP Northern California Portfolio | Office Building |  |
Business Acquisition [Line Items] |  |
Number of real estate properties acquired | property | 26 |
EOP Northern California Portfolio | Development Parcel |  |
Business Acquisition [Line Items] |  |
Number of real estate development projects acquired | project | 2 |

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- Definition Number of shares of equity interests issued or issuable to acquire entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(4) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
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