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Debt - Additional Information (Details) - USD ($) |  |  |  | 12 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 30, 2020 | Jun. 30, 2020 | Nov. 16, 2015 | Dec. 31, 2020 | Dec. 31, 2019 | Oct. 03, 2019 | Jun. 14, 2019 | Feb. 27, 2019 | Mar. 13, 2018 | Nov. 17, 2015 | Apr. 01, 2015 | Mar. 31, 2015
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of debt | $ 1,270,000,000 |  |  |  |  |  |  |  |  |  |  |
1918 Eighth |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Joint venture, ownership percentage |  |  |  | 55.00% |  |  |  |  |  |  |  |
Hollywood Media Portfolio | Investee |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Notes receivable | $ 107,800,000 |  |  |  |  |  |  |  |  |  |  |
Hollywood Media Portfolio |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage sold | 49.00% | 49.00% |  |  |  |  |  |  |  |  |  |
Percentage ownership retained | 51.00% |  |  |  |  |  |  |  |  |  |  |
Blackstone Property Partners | Hollywood Media Portfolio | Investee |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Notes receivable | $ 12,500,000 |  |  |  |  |  |  |  |  |  |  |
A & R Credit Facilities | Hudson Pacific Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  | $ 2,000,000,000.0 |
Secured debt |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  | $ 1,507,276,000 | $ 370,459,000 |  |  |  |  |  |  |
Secured debt | 1918 Eighth |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument term |  |  |  | 5 years |  |  |  |  |  |  |  |
Debt issued |  |  |  | $ 314,300,000 | 0 |  |  |  |  |  |  |
Secured debt | 1918 Eighth | London Interbank Offered Rate (LIBOR) |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 1.70% |  |  |  |  |  |  |  |
Unsecured debt |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  | $ 1,925,000,000 | 2,475,000,000 |  |  |  |  |  |  |
Unsecured debt | Term A Loan | Hudson Pacific Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  |  |  |  |  |  |  |  |  | $ 300,000,000.0
Unsecured debt | Term B Loan |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  | 0 | 350,000,000 |  |  |  |  |  |  |
Unsecured debt | Term B Loan | Hudson Pacific Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  |  |  |  |  |  |  |  |  | $ 350,000,000.0
Unsecured debt | Term C Loan | Hudson Pacific Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  |  |  |  |  |  |  | $ 75,000,000.0 |  |
Unsecured debt | Term D Loan |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  | 0 | 125,000,000 |  |  |  |  |  |  |
Unsecured debt | Term D Loan | Hudson Pacific Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  |  |  |  |  |  |  | $ 125,000,000.0 |  |
Unsecured debt | 4.65% Registered senior notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  | $ 500,000,000 | 500,000,000 |  | $ 150,000,000.0 |  |  |  |  |
Stated interest rate |  |  |  | 4.65% |  |  |  |  |  |  |  |
Effective interest rate |  |  |  | 4.65% |  |  |  |  |  |  |  |
Unsecured debt | 4.65% Registered senior notes | Hudson Pacific Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  |  |  |  |  | $ 350,000,000.0 |  |  |  |
Unsecured debt | 3.25% Registered senior notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  | $ 400,000,000 | 400,000,000 |  |  |  |  |  |  |
Stated interest rate |  |  |  | 3.25% |  |  |  |  |  |  |  |
Effective interest rate |  |  |  | 3.25% |  |  |  |  |  |  |  |
Unsecured debt | 3.25% Registered senior notes | Hudson Pacific Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  |  |  | $ 400,000,000.0 |  |  |  |  |  |
Unsecured debt | Senior notes | Hudson Pacific Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | $ 425,000,000.0 |  |  |  |  |  |  |  |  |
Prepayment, percent of principal, minimum |  |  | 5.00% |  |  |  |  |  |  |  |  |
Prepayment, percent of principal |  |  | 100.00% |  |  |  |  |  |  |  |  |
Unsecured debt | Series A notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  | $ 110,000,000 | 110,000,000 |  |  |  |  |  |  |
Effective interest rate |  |  |  | 4.34% |  |  |  |  |  |  |  |
Unsecured debt | Series A notes | Hudson Pacific Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | $ 110,000,000.0 |  |  |  |  |  |  |  |  |
Unsecured debt | Series B notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  | $ 259,000,000 | 259,000,000 |  |  |  |  |  |  |
Effective interest rate |  |  |  | 4.69% |  |  |  |  |  |  |  |
Unsecured debt | Series B notes | Hudson Pacific Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | 259,000,000.0 |  |  |  |  |  |  |  |  |
Unsecured debt | Series C notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  | $ 56,000,000 | 56,000,000 |  |  |  |  |  |  |
Effective interest rate |  |  |  | 4.79% |  |  |  |  |  |  |  |
Unsecured debt | Series C notes | Hudson Pacific Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | $ 56,000,000.0 |  |  |  |  |  |  |  |  |
Unsecured debt | Series D notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  | $ 150,000,000.0 | 150,000,000 |  |  |  |  |  |  |
Effective interest rate |  |  |  | 3.98% |  |  |  |  |  |  |  |
Unsecured debt | Series E notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  | $ 50,000,000 | 50,000,000 |  |  |  |  |  |  |
Effective interest rate |  |  |  | 3.66% |  |  |  |  |  |  |  |
Unsecured Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Increase in borrowing capacity |  |  |  |  | $ (75,000,000.0) |  |  |  |  |  |  |
Unsecured Revolving Credit Facility | Unsecured debt | Hudson Pacific Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  | $ 0 |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  | $ 600,000,000.0 |  |  |  |  |  |  |  |
Revolving Credit Facility | Unsecured debt | Hudson Pacific Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  |  |  |  |  |  | $ 600,000,000.0 |  |  |

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