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Related Party Transactions - Narrative (Details) $ in Thousands				9 Months Ended
	Oct. 09, 2018 USD ($)	Jan. 10, 2017 USD ($) shares	Apr. 01, 2015 USD ($) ft² director property project shares	Sep. 30, 2018 USD ($) ft²	Sep. 30, 2017 USD ($)	Nov. 16, 2017 USD ($)
Related Party Transaction [Line Items]
Payments to acquire new property				$ 372,080
Area of real estate property (in square feet) | ft²				14,745,260
Shares issued during period (in shares) | shares		18,673,808
Proceeds from issuance of common stock/units, net				$ 0	$ 647,524
Common Stock
Related Party Transaction [Line Items]
Common units redeemed (in shares) | shares		8,881,575
Blackstone Real Estate Partners
Related Party Transaction [Line Items]
Number of director nominees to the board (in directors) | director			3
Hudson Pacific Properties, Inc.
Related Party Transaction [Line Items]
Shares issued during period (in shares) | shares		8,881,575
Proceeds from issuance of common stock/units, net		$ 310,900
Blackstone And Farallon Funds
Related Party Transaction [Line Items]
Shares issued during period (in shares) | shares		9,792,233
Proceeds from issuance of common stock/units, net		$ 342,700
EOP Northern California Portfolio
Related Party Transaction [Line Items]
Area of real estate property (in square feet) | ft²			8,200,000
Gross payments to acquire business			$ 1,750,000
Consideration transferred, common units (in shares) | shares			63,474,791
EOP Northern California Portfolio | Office Building
Related Party Transaction [Line Items]
Number of real estate properties acquired (in properties) | property			26
EOP Northern California Portfolio | Development Parcel
Related Party Transaction [Line Items]
Number of development projects acquired (in projects) | project			2
Ferry Building Property | Subsequent Event
Related Party Transaction [Line Items]
Payments to acquire new property	$ 291,000
Joint Venture That Owns Pinnacle I and II | Not Discontinued Operations
Related Party Transaction [Line Items]
Disposal group, consideration						$ 350,000
Principal Amount of debt included in held-for-sale balances						$ 216,000
11601 Wilshire Boulevard Office Building
Related Party Transaction [Line Items]
Area of leased property (in square feet) | ft²				6,638
Operating leases, term of contract (in years)				8 years
Annual rent cost per year				$ 279

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