XML 72 R56.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Debt Obligations - Consolidated Debt Obligations Outstanding (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2017
Consolidated debt obligations |  |  |
Plus: premiums/(discounts), net |  | $ (6,382) |
Less: deferred financing costs |  | (10,736) |
Total Debt Obligations |  | 1,940,032 | $ 1,930,828
Secured Debt [Member] |  |  |
Consolidated debt obligations |  |  |
Long-term Debt, Gross |  | 328,540 | 320,107
Plus: premiums/(discounts), net |  | (2,041) | (2,325)
Less: deferred financing costs |  | (525) | (566)
Total mortgage indebtedness |  | 325,974 | 317,216
Unsecured Debt [Member] |  |  |
Consolidated debt obligations |  |  |
Long-term Debt, Gross |  | 1,628,610 | 1,628,610
Plus: premiums/(discounts), net |  | (4,341) | (4,423)
Less: deferred financing costs |  | (10,211) | (10,575)
Total unsecured indebtedness |  | 1,614,058 | 1,613,612
Two Logan Square [Member] | Secured Debt [Member] |  |  |
Consolidated debt obligations |  |  |
Long-term Debt, Gross |  | $ 84,037 | 84,440
Effective interest rate |  | 3.98% |
Debt instrument maturity date |  | May 01, 2020 |
Four Tower Bridge [Member] | Secured Debt [Member] |  |  |
Consolidated debt obligations |  |  |
Long-term Debt, Gross |  | $ 9,695 |
Effective interest rate | [1] | 4.50% |
Debt instrument maturity date |  | Feb. 28, 2021 |
One Commerce Square [Member] | Secured Debt [Member] |  |  |
Consolidated debt obligations |  |  |
Long-term Debt, Gross |  | $ 122,808 | 123,667
Effective interest rate |  | 3.64% |
Debt instrument maturity date |  | Apr. 05, 2023 |
Two Commerce Square [Member] | Secured Debt [Member] |  |  |
Consolidated debt obligations |  |  |
Long-term Debt, Gross |  | $ 112,000 | 112,000
Effective interest rate |  | 4.51% |
Debt instrument maturity date |  | Apr. 05, 2023 |
Seven Year Term Loan - Swapped to fixed [Member] | Unsecured Debt [Member] |  |  |
Consolidated debt obligations |  |  |
Long-term Debt, Gross |  | $ 250,000 | 250,000
Effective interest rate |  | 3.72% |
Debt instrument maturity date |  | Oct. 01, 2022 |
$350M 3.95% Guaranteed Notes due 2023 [Member] | Unsecured Debt [Member] |  |  |
Consolidated debt obligations |  |  |
Long-term Debt, Gross |  | $ 350,000 | 350,000
Effective interest rate |  | 3.87% |
Debt instrument maturity date |  | Apr. 15, 2018 |
$250.0M 4.10% Guaranteed Notes due 2024 [Member] | Unsecured Debt [Member] |  |  |
Consolidated debt obligations |  |  |
Long-term Debt, Gross |  | $ 250,000 | 250,000
Effective interest rate |  | 4.33% |
Debt instrument maturity date |  | Feb. 15, 2023 |
$450.0M 3.95% Guaranteed Notes due 2027 [Member] | Unsecured Debt [Member] |  |  |
Consolidated debt obligations |  |  |
Long-term Debt, Gross |  | $ 450,000 | 450,000
Effective interest rate |  | 4.03% |
Debt instrument maturity date |  | Oct. 01, 2024 |
$250M 4.55% Guaranteed Notes due 2029 [Member] | Unsecured Debt [Member] |  |  |
Consolidated debt obligations |  |  |
Long-term Debt, Gross |  | $ 250,000 | 250,000
Effective interest rate |  | 4.60% |
Debt instrument maturity date |  | Oct. 01, 2029 |
Indenture IA (Preferred Trust I) [Member] | Unsecured Debt [Member] |  |  |
Consolidated debt obligations |  |  |
Long-term Debt, Gross |  | $ 27,062 | 27,062
Debt instrument, description of variable rate basis |  | LIBOR + 1.25% |
Spread on variable rate |  | 1.25% |
Debt instrument maturity date |  | Mar. 30, 2035 |
Indenture IB (Preferred Trust I) - Swapped to fixed [Member] | Unsecured Debt [Member] |  |  |
Consolidated debt obligations |  |  |
Long-term Debt, Gross |  | $ 25,774 | 25,774
Effective interest rate |  | 3.30% |
Debt instrument maturity date |  | Apr. 30, 2035 |
Indenture II (Preferred Trust II) - Swapped to fixed [Member] | Unsecured Debt [Member] |  |  |
Consolidated debt obligations |  |  |
Long-term Debt, Gross |  | $ 25,774 | $ 25,774
Effective interest rate |  | 3.09% |
Debt instrument maturity date |  | Jul. 30, 2035 |
[1] | This loan was assumed upon acquisition of the related property on January 5, 2018. The interest rate reflects the market rate at the time of acquisition.

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 Secured debt net of premiums discount. + References No definition available. + Details
Name: | bdn_SecuredDebtNetOfPremiumsDiscount
Namespace Prefix: | bdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total unsecured indebtedness. + References No definition available. + Details
Name: | bdn_UnsecuredIndebtedness
Namespace Prefix: | bdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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/presentationRef -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=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -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=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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/presentationRef -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=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
Name: | us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentMaturityDate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after accumulated amortization, of debt discount (premium). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28567-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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=6877327&loc=d3e13212-122682 + 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/presentationRef -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=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -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=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | bdn_PropertyLocationAxis=bdn_FourTowerBridgeMember
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_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: |