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propertiesus-gaap_RealEstatePropertiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_UnconsolidatedPropertiesMemberus-gaap_RealEstatePropertiesAxisexplicitMemberItemStandardhttp://www.behringerharvard.com/20130630itembhoi07false truefalseD2013Q2YTD_NoncontrollingInterestMember_MaximumMember_EquityMethodInvestmentsMember_WhollyOwnedPropertiesMemberhttp://www.sec.gov/CIK0001308711duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseNoncontrolling Interestdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_NoncontrollingInterestMemberdei_LegalEntityAxisexplicitMemberfalsefalseMaximumus-gaap_RangeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MaximumMemberus-gaap_RangeAxisexplicitMemberfalsefalseEquity method investmentsus-gaap_InformationByFinancialStatementLineItemAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EquityMethodInvestmentsMemberus-gaap_InformationByFinancialStatementLineItemAxisexplicitMemberfalsefalseWholly owned propertiesus-gaap_RealEstatePropertiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_WhollyOwnedPropertiesMemberus-gaap_RealEstatePropertiesAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli01true 3bhoi_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItemsbhoi_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Business2false 4us-gaap_NumberOfRealEstatePropertiesus-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse55falsefalsefalse2truefalsefalse11falsefalsefalse3truefalsefalse33falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse11falsefalsefalse6truefalsefalse2222falsefalsefalse7falsefalsefalse00falsefalsefalsexbrli:integerItemTypeintegerThe number of real estate properties owned as of the balance sheet date.No definition available.false256Number of properties3false 4bhoi_NumberOfPropertiesToWhichEntityIsMezzanineLenderbhoi_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4truefalsefalse11falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalsexbrli:integerItemTypeintegerRepresents the number of properties to which the entity is a mezzanine lender.No definition available.false256Number of 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