XML 119 R97.htm IDEA: XBRL DOCUMENT
v3.20.4

DEBT OBLIGATIONS - Consolidated Debt Obligations Outstanding (Details) - USD ($) $ in Thousands |  |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Nov. 10, 2020 | Oct. 21, 2020 | Dec. 13, 2018 | Dec. 12, 2018 | Dec. 31, 2020 | Dec. 31, 2019
Consolidated debt obligations |  |  |  |  |  |
Total Debt Obligations |  |  |  |  | $ 1,830,595 | $ 2,144,418
Four Tower Bridge |  |  |  |  |  |
Consolidated debt obligations |  |  |  |  |  |
Repayments of long-term debt | $ 9,100 |  |  |  |  |
Secured Debt |  |  |  |  |  |
Consolidated debt obligations |  |  |  |  |  |
Long-term debt, gross |  |  |  |  | 0 | 315,437
Plus: premiums/(discounts), net |  |  |  |  | 0 | (1,383)
Net deferred financing costs |  |  |  |  | 0 | (242)
Total Debt Obligations |  |  |  |  | 0 | 313,812
Secured Debt | Two Logan Square |  |  |  |  |  |
Consolidated debt obligations |  |  |  |  |  |
Long-term debt, gross |  |  |  |  | $ 0 | 81,103
Effective interest rate |  |  |  |  | 3.98% |
Repayments of long-term debt |  | $ 79,800 |  |  |  |
Secured Debt | Four Tower Bridge |  |  |  |  |  |
Consolidated debt obligations |  |  |  |  |  |
Long-term debt, gross |  |  |  |  | $ 0 | 9,291
Effective interest rate |  |  |  |  | 4.50% |
Secured Debt | One Commerce Square |  |  |  |  |  |
Consolidated debt obligations |  |  |  |  |  |
Long-term debt, gross |  |  |  |  | $ 0 | 116,571
Effective interest rate |  |  |  |  | 3.64% |
Secured Debt | Two Commerce Square |  |  |  |  |  |
Consolidated debt obligations |  |  |  |  |  |
Long-term debt, gross |  |  |  |  | $ 0 | 108,472
Effective interest rate |  |  |  |  | 4.51% |
Unsecured Debt |  |  |  |  |  |
Consolidated debt obligations |  |  |  |  |  |
Long-term debt, gross |  |  |  |  | $ 1,828,610 | 1,828,610
Plus: premiums/(discounts), net |  |  |  |  | 10,137 | 12,090
Net deferred financing costs |  |  |  |  | (8,152) | (10,094)
Total Debt Obligations |  |  |  |  | 1,830,595 | 1,830,606
Unsecured Debt | $600 million Unsecured Credit Facility |  |  |  |  |  |
Consolidated debt obligations |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  | 600,000 |
Long-term debt, gross |  |  |  |  | $ 0 | 0
Unsecured Debt | Seven-Year Term Loan - Swapped to fixed |  |  |  |  |  |
Consolidated debt obligations |  |  |  |  |  |
Debt instrument, term |  |  | 7 years |  | 7 years |
Debt instrument, interest rate, stated percentage |  |  | 2.87% |  |  |
Long-term debt, gross |  |  | $ 250,000 |  | $ 250,000 | 250,000
Effective interest rate |  |  |  |  | 2.87% |
Unsecured Debt | $350.0M 3.95% Guaranteed Notes due 2023 |  |  |  |  |  |
Consolidated debt obligations |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  | $ 350,000 |
Debt instrument, interest rate, stated percentage |  |  |  |  | 3.95% |
Long-term debt, gross |  |  |  |  | $ 350,000 | 350,000
Effective interest rate |  |  |  |  | 3.87% |
Unsecured Debt | $350.0M 4.10% Guaranteed Notes due 2024 |  |  |  |  |  |
Consolidated debt obligations |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  | $ 350,000 |
Debt instrument, interest rate, stated percentage |  |  |  |  | 4.10% |
Long-term debt, gross |  |  |  |  | $ 350,000 | 350,000
Effective interest rate |  |  |  |  | 3.78% |
Unsecured Debt | $450.0M 3.95% Guaranteed Notes due 2027 |  |  |  |  |  |
Consolidated debt obligations |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  | $ 450,000 |
Debt instrument, interest rate, stated percentage |  |  |  |  | 3.95% |
Long-term debt, gross |  |  |  |  | $ 450,000 | 450,000
Effective interest rate |  |  |  |  | 4.03% |
Unsecured Debt | $350.0M 4.55% Guaranteed Notes due 2029 |  |  |  |  |  |
Consolidated debt obligations |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  | $ 350,000 |
Debt instrument, interest rate, stated percentage |  |  |  |  | 4.55% |
Long-term debt, gross |  |  |  |  | $ 350,000 | 350,000
Effective interest rate |  |  |  |  | 4.30% |
Unsecured Debt | Indenture IA (Preferred Trust I) |  |  |  |  |  |
Consolidated debt obligations |  |  |  |  |  |
Long-term debt, gross |  |  |  |  | $ 27,062 | 27,062
Unsecured Debt | Indenture IB (Preferred Trust I) - Swapped to fixed |  |  |  |  |  |
Consolidated debt obligations |  |  |  |  |  |
Long-term debt, gross |  |  |  |  | $ 25,774 | 25,774
Effective interest rate |  |  |  |  | 3.30% |
Unsecured Debt | Indenture II (Preferred Trust II) |  |  |  |  |  |
Consolidated debt obligations |  |  |  |  |  |
Long-term debt, gross |  |  |  |  | $ 25,774 | $ 25,774
LIBOR | Unsecured Debt | $600 million Unsecured Credit Facility |  |  |  |  |  |
Consolidated debt obligations |  |  |  |  |  |
Variable interest rate |  |  |  |  | 1.10% |
LIBOR | Unsecured Debt | Seven-Year Term Loan - Swapped to fixed |  |  |  |  |  |
Consolidated debt obligations |  |  |  |  |  |
Variable interest rate |  |  | 1.25% | 1.80% |  |
LIBOR | Unsecured Debt | Indenture IA (Preferred Trust I) |  |  |  |  |  |
Consolidated debt obligations |  |  |  |  |  |
Variable interest rate |  |  |  |  | 1.25% |
LIBOR | Unsecured Debt | Indenture II (Preferred Trust II) |  |  |  |  |  |
Consolidated debt obligations |  |  |  |  |  |
Variable interest rate |  |  |  |  | 1.25% |

X
- Definition Consolidated Debt Obligations Abstract. + References No definition available. + Details
Name: | bdn_ConsolidatedDebtObligationsAbstract
Namespace Prefix: | bdn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
Name: | us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after accumulated amortization, of debt discount (premium). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28567-108399 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28541-108399 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399 + Details
Name: | us-gaap_DeferredFinanceCostsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585 + Details
Name: | us-gaap_RepaymentsOfLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | bdn_PropertyLocationAxis=bdn_FourTowerBridgeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SecuredDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bdn_PropertyLocationAxis=bdn_TwoLoganSquareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bdn_PropertyLocationAxis=bdn_OneCommerceSquareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bdn_PropertyLocationAxis=bdn_TwoCommerceSquareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_UnsecuredDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=bdn_A600MillionUnsecuredCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=bdn_SevenYearTermLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=bdn_Note2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=bdn_Note2024Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=bdn_Note2027Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=bdn_Note2029Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=bdn_IndentureIaPreferredTrustIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=bdn_IndentureIbPreferredTrustIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=bdn_IndentureIiPreferredTrustIiMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |