XML 134 R112.htm IDEA: XBRL DOCUMENT
v3.20.4

DISTRIBUTIONS (Details) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Distributions [Abstract] |  |  |
Common share distributions payments of ordinary dividends (in usd per share) | $ 0.41 | $ 0.62 | $ 0.55
Common share distributions capital gain (in usd per share) | 0.35 | 0 | 0
Common share distributions non-taxable distributions (in usd per share) | 0 | 0.14 | 0.17
Common stock dividends per share paid (in usd per share) | $ 0.76 | $ 0.76 | $ 0.72
Percentage of distributions classified as ordinary income | 53.90% | 81.00% | 76.20%
Percentage of distributions classified as capital gain | 46.10% | 0.00% | 0.00%
Percentage of distributions classified as non-taxable distributions | 0.00% | 19.00% | 23.80%

X
- Definition Common Share Distributions Capital Gain + References No definition available. + Details
Name: | bdn_CommonShareDistributionsCapitalGain
Namespace Prefix: | bdn_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Common Share Distributions Non-taxable Distributions + References No definition available. + Details
Name: | bdn_CommonShareDistributionsNonTaxableDistributions
Namespace Prefix: | bdn_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Common Share Distributions Payments of Ordinary Dividends + References No definition available. + Details
Name: | bdn_CommonShareDistributionsPaymentsOfOrdinaryDividends
Namespace Prefix: | bdn_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Distributions [Abstract] + References No definition available. + Details
Name: | bdn_DistributionsAbstract
Namespace Prefix: | bdn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage Of Distributions classified as capital gain + References No definition available. + Details
Name: | bdn_PercentageOfDistributionsClassifiedAsCapitalGain
Namespace Prefix: | bdn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage Of Distributions classified as non-taxable distribution + References No definition available. + Details
Name: | bdn_PercentageOfDistributionsClassifiedAsNonTaxableDistribution
Namespace Prefix: | bdn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage Of Distributions classified as ordinary income + References No definition available. + Details
Name: | bdn_PercentageOfDistributionsClassifiedAsOrdinaryIncome
Namespace Prefix: | bdn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
Name: | us-gaap_CommonStockDividendsPerShareCashPaid
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration