Equity Method Investments, Agreement To Purchase Outstanding Interest, Amount

No definition available.

Name:	hpp_EquityMethodInvestmentsAgreementToPurchaseOutstandingInterestAmount
Namespace Prefix:	hpp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

+ Details

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

- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66022249&loc=d3e33749-111570

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_EquityMethodInvestments
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

No definition available.

+ Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentsLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_BusinessAcquisitionAxis=hpp_A11601WilshireBoulevardOfficeBuildingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=hpp_SantaClaraCAJointVentureMember
Namespace Prefix:
Data Type:	na
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Period Type:

Investment in Unconsolidated Entity (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016	Dec. 27, 2016	Jul. 01, 2016	Jun. 16, 2016
Schedule of Equity Method Investments [Line Items]
Assets associated with real estate held for sale	$ 38,546,000	$ 37,228,000
11601 Wilshire Boulevard Office Building
Schedule of Equity Method Investments [Line Items]
Real estate property, ownership (as a percent)				28.00%
Assets associated with real estate held for sale	7,800,000	7,800,000
Agreement to purchase outstanding interest in land			$ 50,000,000.0
Santa Clara, CA Joint Venture
Schedule of Equity Method Investments [Line Items]
Real estate property, ownership (as a percent)					21.00%
Assets associated with real estate held for sale	$ 30,700,000	$ 29,400,000