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v3.19.2

Related Party Transactions (Details) $ in Millions | Oct. 09, 2018 USD ($)
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Ferry Building Property |
Related Party Transaction [Line Items] |
Payments to acquire new property | $ 291.0

X
- Definition Asset Acquisition, Consideration Transferred + References No definition available. + Details
Name: | hpp_AssetAcquisitionConsiderationTransferred
Namespace Prefix: | hpp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- 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 No definition available. + Details
Name: | us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=hpp_FerryBuildingPropertyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |