XML 25 R54.htm IDEA: XBRL DOCUMENT
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Organization of The Parent Company and The Operating Partnership (Details) | Dec. 31, 2014 acre sqft
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Parent Company [Member] |
Organization of The Parent Company and The Operating Partnership (Textuals) [Abstract] |
Ownership in the Operating Partnership | 99.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net rentable square feet | 25,100,000 us-gaap_AreaOfRealEstateProperty / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Area Owned by Company of Undeveloped Parcels Of Land | 415 bdn_AreaOwnedbyCompanyofUndevelopedParcelsOfLand / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Area of additional undeveloped parcels of land with option to purchase | 63 bdn_AreaOfAdditionalUndevelopedParcelsOfLandWithOptionToPurchase / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Total potential development capacity | 6,000,000 bdn_TotalPotentialDevelopmentCapacity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Unconsolidated real estate ventures [Member] |
Organization of The Parent Company and The Operating Partnership (Textuals) [Abstract] |
Number of unconsolidated real estate ventures | 17 bdn_NumberOfUnconsolidatedRealEstateVentures / dei_LegalEntityAxis = us-gaap_CorporateJointVentureMember
Net rentable square feet | 6,700,000 us-gaap_AreaOfRealEstateProperty / dei_LegalEntityAxis = us-gaap_CorporateJointVentureMember
Wholly-owned management company subsidiaries [Member] |
Organization of The Parent Company and The Operating Partnership (Textuals) [Abstract] |
Net rentable square feet | 33,900,000 us-gaap_AreaOfRealEstateProperty / dei_LegalEntityAxis = bdn_ManagementCompanySubsidiariesMember
Third Parties and Unconsolidated Real Estate Ventures [Member] |
Organization of The Parent Company and The Operating Partnership (Textuals) [Abstract] |
Net rentable square feet | 8,900,000 us-gaap_AreaOfRealEstateProperty / dei_LegalEntityAxis = bdn_ThirdPartiesAndRealEstateVenturesMember
Subsidiaries [Member] |
Organization of The Parent Company and The Operating Partnership (Textuals) [Abstract] |
Ownership in the Operating Partnership | 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Total Properties [Member] |
Organization of The Parent Company and The Operating Partnership (Textuals) [Abstract] |
Number of properties with ownership interest | 200 us-gaap_NumberOfRealEstateProperties / us-gaap_PropertyPlantAndEquipmentByTypeAxis = bdn_TotalPropertiesMember
Office Properties [Member] |
Organization of The Parent Company and The Operating Partnership (Textuals) [Abstract] |
Number of properties with ownership interest | 167 us-gaap_NumberOfRealEstateProperties / us-gaap_PropertyPlantAndEquipmentByTypeAxis = bdn_OfficePropertiesMember
Industrial facilities [Member] |
Organization of The Parent Company and The Operating Partnership (Textuals) [Abstract] |
Number of properties with ownership interest | 20 us-gaap_NumberOfRealEstateProperties / us-gaap_PropertyPlantAndEquipmentByTypeAxis = bdn_IndustrialFacilitiesMember
Mixed-use properties [Member] |
Organization of The Parent Company and The Operating Partnership (Textuals) [Abstract] |
Number of properties with ownership interest | 5 us-gaap_NumberOfRealEstateProperties / us-gaap_PropertyPlantAndEquipmentByTypeAxis = bdn_MixedUsePropertiesMember
Retail Properties [Member] |
Organization of The Parent Company and The Operating Partnership (Textuals) [Abstract] |
Number of properties with ownership interest | 1 us-gaap_NumberOfRealEstateProperties / us-gaap_PropertyPlantAndEquipmentByTypeAxis = bdn_RetailPropertiesMember
Core Properties [Member] |
Organization of The Parent Company and The Operating Partnership (Textuals) [Abstract] |
Number of properties with ownership interest | 193 us-gaap_NumberOfRealEstateProperties / us-gaap_PropertyPlantAndEquipmentByTypeAxis = bdn_CorePropertiesMember
Development Property [Member] |
Organization of The Parent Company and The Operating Partnership (Textuals) [Abstract] |
Number of properties with ownership interest | 3 us-gaap_NumberOfRealEstateProperties / us-gaap_PropertyPlantAndEquipmentByTypeAxis = bdn_DevelopmentPropertyMember
Assets Held-for-sale [Member] |
Organization of The Parent Company and The Operating Partnership (Textuals) [Abstract] |
Number of properties with ownership interest | 2 us-gaap_NumberOfRealEstateProperties / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_AssetsHeldForSaleMember
Redevelopment Property [Member] |
Organization of The Parent Company and The Operating Partnership (Textuals) [Abstract] |
Number of properties with ownership interest | 1 us-gaap_NumberOfRealEstateProperties / us-gaap_PropertyPlantAndEquipmentByTypeAxis = bdn_RedevelopmentPropertyMember
Re-entitlement Property [Member] |
Organization of The Parent Company and The Operating Partnership (Textuals) [Abstract] |
Number of properties with ownership interest | 1 us-gaap_NumberOfRealEstateProperties / us-gaap_PropertyPlantAndEquipmentByTypeAxis = bdn_ReEntitlementPropertyMember
Wholly Owned Properties [Member] | Parent Company [Member] |
Organization of The Parent Company and The Operating Partnership (Textuals) [Abstract] |
Net rentable square feet | 25,000,000 us-gaap_AreaOfRealEstateProperty / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_RealEstatePropertiesAxis = us-gaap_WhollyOwnedPropertiesMember

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- Definition Area Of Additional Undeveloped Parcels Of Land With Option to Purchase + References No definition available. + Details
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- Definition Area Owned by Company of Undeveloped Parcels Of Land + References No definition available. + Details
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- Definition Number of unconsolidated real estate ventures. + References No definition available. + Details
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- Definition The amount of development that can be supported by undeveloped land + References No definition available. + Details
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- Definition Area of a real estate property. + References No definition available. + Details
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Balance Type: | na
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- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
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Data Type: | num:percentItemType
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- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
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