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v2.4.1.9

Related Party Transactions - Narrative (Details) (USD $) | 3 Months Ended
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Mar. 31, 2015
Related Party Transaction |
Related Party Transaction, Monthly Rent Obligation from Subtenant | $ 0.012 hpp_RelatedPartyTransactionMonthlyRentObligationfromSubtenant
FJM Investments, LLC |
Related Party Transaction |
Area of real estate property | 3,707 us-gaap_AreaOfRealEstateProperty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = hpp_FjmInvestmentsLlcMember

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- Definition Related Party Transaction, Monthly Rent Obligation from Subtenant + References No definition available. + Details
Name: | hpp_RelatedPartyTransactionMonthlyRentObligationfromSubtenant
Namespace Prefix: | hpp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Area of a real estate property. + References No definition available. + Details
Name: | us-gaap_AreaOfRealEstateProperty
Namespace Prefix: | us-gaap_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=hpp_FjmInvestmentsLlcMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |