Derivatives - Schedule of Derivative Instruments (Details) - Designated as hedging Instrument - USD ($)	Jun. 30, 2025	Dec. 31, 2024
Derivative
Fair Value Assets (Liabilities)	$ 2,660,000	$ 4,022,000
1918 Eighth \| Interest Rate Swap
Derivative
Notional amount	172,900,000
1918 Eighth \| Interest Rate Swap \| Cash Flow Hedging
Derivative
Notional amount	$ 172,865,000
Interest Rate	3.75%
Fair Value Assets (Liabilities)	$ 261,000	524,000
1918 Eighth \| Interest Rate Cap
Derivative
Notional amount	141,400,000
1918 Eighth \| Interest Rate Cap \| Cash Flow Hedging
Derivative
Notional amount	141,435,000
1918 Eighth \| Interest Rate Cap \| Cash Flow Hedging, Partial
Derivative
Notional amount	$ 314,300,000
Interest Rate	5.00%
Fair Value Assets (Liabilities)	$ 1,000	62,000
1918 Eighth \| Interest Rate Sold Cap \| Mark-to-Market Hedging
Derivative
Notional amount	$ 172,865,000
Interest Rate	5.00%
Fair Value Assets (Liabilities)	$ (1,000)	(34,000)
Hollywood Media Portfolio CMBS \| Interest Rate Swap
Derivative
Notional amount	351,200,000
Hollywood Media Portfolio CMBS \| Interest Rate Swap \| Cash Flow Hedging
Derivative
Notional amount	$ 351,186,000
Interest Rate	3.31%
Fair Value Assets (Liabilities)	$ 1,709,000	3,663,000
Hollywood Media Portfolio CMBS \| Interest Rate Cap \| Cash Flow Hedging
Derivative
Notional amount	539,000,000
Hollywood Media Portfolio CMBS \| Interest Rate Cap \| Cash Flow Hedging, Partial
Derivative
Notional amount	$ 1,100,000,000
Interest Rate	6.01%
Fair Value Assets (Liabilities)	$ 0	4,000
Hollywood Media Portfolio CMBS \| Interest Rate Sold Cap \| Cash Flow Hedging, Partial
Derivative
Interest Rate	6.01%
Hollywood Media Portfolio CMBS \| Interest Rate Sold Cap \| Mark-to-Market Hedging
Derivative
Notional amount	$ 561,000,000
Fair Value Assets (Liabilities)	0	(2,000)
Hollywood Media Portfolio CMBS \| Interest Rate Swap
Derivative
Notional amount	179,600,000
Hollywood Media Portfolio CMBS \| Interest Rate Swap \| Cash Flow Hedging
Derivative
Notional amount	$ 180,000,000
Interest Rate	4.13%
Fair Value Assets (Liabilities)	$ (727,000)	(267,000)
Sunset Glenoaks Studios \| Interest Rate Cap \| Cash Flow Hedging
Derivative
Notional amount	100,600,000
Fair Value Assets (Liabilities)	$ 9,000	72,000
Sunset Glenoaks Studios \| Interest Rate Cap \| Cash Flow Hedging, Partial
Derivative
Interest Rate	4.50%
Office Portfolio CMBS \| Interest Rate Swap
Derivative
Fair Value Assets (Liabilities)	$ (443,000)	0
Notional amount	$ 222,500,000
Office Portfolio CMBS \| Interest Rate Swap \| Cash Flow Hedging
Derivative
Interest Rate	3.35%
Office Portfolio CMBS \| Interest Rate Swap \| Cash Flow Hedging, Partial
Derivative
Interest Rate	3.41%
Office Portfolio CMBS \| Interest Rate Swap \| Mark-to-Market Hedging
Derivative
Notional amount	$ 250,000,000
Office Portfolio CMBS \| Interest Rate Cap
Derivative
Notional amount	$ 250,000,000
Office Portfolio CMBS \| Interest Rate Cap \| Cash Flow Hedging, Partial
Derivative
Interest Rate	4.96%
Office Portfolio CMBS \| Interest Rate Cap \| Mark-to-Market Hedging
Derivative
Notional amount	$ 475,000,000
Fair Value Assets (Liabilities)	$ 220,000	0
Office Portfolio CMBS \| Interest Rate Sold Cap \| Cash Flow Hedging, Partial
Derivative
Interest Rate	4.96%
Office Portfolio CMBS \| Interest Rate Sold Cap \| Mark-to-Market Hedging
Derivative
Notional amount	$ 475,000,000
Fair Value Assets (Liabilities)	$ (216,000)	0
Office Portfolio CMBS \| Interest Rate Swap \| Cash Flow Hedging, Partial
Derivative
Interest Rate	3.41%
Office Portfolio CMBS Loan Cap 2 \| Interest Rate Cap
Derivative
Fair Value Assets (Liabilities)	$ 1,847,000	$ 0
Office Portfolio CMBS Loan Cap 2 \| Interest Rate Cap \| Cash Flow Hedging, Partial
Derivative
Interest Rate	3.35%
Office Portfolio CMBS Loan Cap 2 \| Interest Rate Cap \| Mark-to-Market Hedging
Derivative
Notional amount	$ 222,501,000

Nominal or face amount used to calculate payments on the derivative asset.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 5
-Subparagraph (SX 210.12-13(Column A)(Footnote 3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-5

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 5C
-Subparagraph (SX 210.12-13C(Column E))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-5C

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 5A
-Subparagraph (SX 210.12-13A(Column D))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-5A

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 5B
-Subparagraph (SX 210.12-13B(Column B))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-5B

+ Details

Name:	us-gaap_DerivativeAssetNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-10

+ Details

Name:	us-gaap_DerivativeFairValueOfDerivativeNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 6A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480682/815-20-25-6A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-5

+ Details

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 181
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-181

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A

+ Details

Name:	us-gaap_DerivativeNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

Variable interest rate in effect as of the balance sheet date related to the interest rate derivative.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeVariableInterestRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=hpp_A1918EighthMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateCapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=hpp_CashFlowHedgingPartialMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=hpp_InterestRateSoldCapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_FairValueHedgingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=hpp_HollywoodMediaPortfolioDebtIncludingAcquiredMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=hpp_InterestRateSwapTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=hpp_SunsetGlenoaksStudiosMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=hpp_OfficePortfolioCMBSLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=hpp_OfficePortfolioCMBSLoanCap2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: