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v3.6.0.2

Stock-Based Compensation - Outperformance Plan (Details) - USD ($) | Dec. 31, 2016 | Dec. 31, 2015
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Outperformance Program |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Maximum bonus pool | $ 17,500,000.0 | $ 15,000,000

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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Maximum Share Value Authorized Under Plan + References No definition available. + Details
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Namespace Prefix: | hpp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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- Details
Name: | us-gaap_PlanNameAxis=hpp_OutperformanceProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |