XML 61 R47.htm IDEA: XBRL DOCUMENT
v3.23.1

ORGANIZATION OF THE PARENT COMPANY AND THE OPERATING PARTNERSHIP - Summary of Core Portfolio of Operating Properties and Excludes Development, Redevelopment and Held for Sale (Details) | Mar. 31, 2023 ft² property
--- | ---
Real Estate Properties [Line Items] |
Number of Properties | property | 77
Rentable area (in square feet) | ft² | 13,578,188
Core Properties |
Real Estate Properties [Line Items] |
Number of Properties | property | 72
Rentable area (in square feet) | ft² | 12,791,041
Office properties |
Real Estate Properties [Line Items] |
Number of Properties | property | 67
Rentable area (in square feet) | ft² | 11,848,707
Mixed-use properties |
Real Estate Properties [Line Items] |
Number of Properties | property | 5
Rentable area (in square feet) | ft² | 942,334
Development property |
Real Estate Properties [Line Items] |
Number of Properties | property | 2
Rentable area (in square feet) | ft² | 350,488
Redevelopment properties |
Real Estate Properties [Line Items] |
Number of Properties | property | 3
Rentable area (in square feet) | ft² | 436,659

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

X
- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfRealEstateProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=bdn_CorePropertiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=bdn_OfficePropertiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=bdn_MixedUsePropertiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=bdn_DevelopmentProjectsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=bdn_RedevelopmentProjectsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |