XML 85 R64.htm IDEA: XBRL DOCUMENT
v3.24.0.1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Impairment of Real Estate Assets (Details) | 12 Months Ended
--- | ---
Dec. 31, 2023
Accounting Policies [Abstract] |
Disposition of assets, holding period | 10 years

X
- Definition Holding period of disposition of assets. + References No definition available. + Details
Name: | bdn_HoldingPeriodOfDispositionOfAssets
Namespace Prefix: | bdn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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