Organization (Details)	Jun. 30, 2026 ft² property
Real Estate Properties
Number of Properties \| property	52
Net rentable area (in square feet) \| ft²	18,864,431
Consolidated portfolio
Real Estate Properties
Number of Properties \| property	47
Net rentable area (in square feet) \| ft²	15,220,612
Consolidated portfolio \| Office
Real Estate Properties
Number of Properties \| property	40
Net rentable area (in square feet) \| ft²	12,445,564
Consolidated portfolio \| Studio
Real Estate Properties
Number of Properties \| property	3
Net rentable area (in square feet) \| ft²	1,230,183
Consolidated portfolio \| Future development
Real Estate Properties
Number of Properties \| property	4
Net rentable area (in square feet) \| ft²	1,544,865
Unconsolidated portfolio
Real Estate Properties
Number of Properties \| property	5
Net rentable area (in square feet) \| ft²	3,643,819
Unconsolidated portfolio \| Bentall Centre
Real Estate Properties
Joint venture, ownership (as a percent)	20.00%
Unconsolidated portfolio \| Joint Venture, Sunset Glenoaks Studios
Real Estate Properties
Joint venture, ownership (as a percent)	50.00%
Unconsolidated portfolio \| Sunset Waltham Cross Studios
Real Estate Properties
Joint venture, ownership (as a percent)	35.00%
Unconsolidated portfolio \| Sunset Pier 94 Studios
Real Estate Properties
Joint venture, ownership (as a percent)	51.00%
Joint venture, ownership (as a percent)	25.60%
Unconsolidated portfolio \| Office
Real Estate Properties
Number of Properties \| property	1
Net rentable area (in square feet) \| ft²	1,551,388
Unconsolidated portfolio \| Studio
Real Estate Properties
Number of Properties \| property	2
Net rentable area (in square feet) \| ft²	475,084
Unconsolidated portfolio \| Future development
Real Estate Properties
Number of Properties \| property	2
Net rentable area (in square feet) \| ft²	1,617,347

Equity Method Investment, Economic Interests Percentage

No definition available.

Name:	hpp_EquityMethodInvestmentEconomicInterestsPercentage
Namespace Prefix:	hpp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-28

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

+ Details

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

- Definition

Net rentable area for properties owned.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-2

+ Details

Name:	us-gaap_NetRentableArea
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

+ Details

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
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

+ Details

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

- Details

Name:	srt_ConsolidatedEntitiesAxis=us-gaap_ConsolidatedEntityExcludingVieMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_OfficeBuildingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=hpp_StudioPropertyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=us-gaap_LandMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ConsolidatedEntitiesAxis=us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=hpp_JointVentureBentallCentrePropertiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=hpp_JointVentureSunsetGlenoaksStudiosMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=hpp_JointVentureSunsetWalthamCrossStudiosMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=hpp_JointVentureSunsetPier94StudiosMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: