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Equity - Dividends Narrative (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Class of Stock
Common dividends declared (in usd per share)	$ 0.125us-gaap_CommonStockDividendsPerShareDeclared	$ 0.125us-gaap_CommonStockDividendsPerShareDeclared
6.25% series A cumulative redeemable preferred units of the Operating Partnership
Class of Stock
Preferred dividends declared (dollars per share)	$ 0.3906us-gaap_PreferredStockDividendsPerShareDeclared / us-gaap_StatementClassOfStockAxis = hpp_SeriesCumulativeRedeemablePreferredUnitsOfOperatingPartnershipMember
Series B Preferred Stock
Class of Stock
Preferred dividends declared (dollars per share)	$ 0.5234us-gaap_PreferredStockDividendsPerShareDeclared / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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+ References

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