XML 49 R35.htm IDEA: XBRL DOCUMENT
v3.23.3

ORGANIZATION OF THE PARENT COMPANY AND THE OPERATING PARTNERSHIP (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule of Core Portfolio of Operating Properties and Excludes Development, Redevelopment and Held for Sale | The Company’s core portfolio of operating properties (the “Core Properties”) excludes development properties, redevelopment properties, and properties held for sale. The Properties were comprised of the following as of September 30, 2023:
| Number of Properties |  | Rentable Square Feet
Office properties | 65 |  |  | 11,656,197 |
Mixed-use properties | 5 |  |  | 942,334 |
Core Properties | 70 |  |  | 12,598,531 |
Development property | 1 |  |  | 144,685 |
Redevelopment properties | 2 |  |  | 268,365 |
Recently completed - not stabilized property | 1 |  |  | 168,294 |
The Properties | 74 |  |  | 13,179,875 |

X
- Definition Schedule of core portfolio of operating properties and excludes development and redevelopment properties under construction. + References No definition available. + Details
Name: | bdn_ScheduleOfCorePortfolioOfOperatingPropertiesAndExcludesDevelopmentAndRedevelopmentPropertiesUnderConstructionTableTableTextBlock
Namespace Prefix: | bdn_
Data Type: | dtr-types1:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration