XML 78 R38.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Investment in Unconsolidated Ventures (Narrative) (Details) $ in Thousands |  |  |  |  | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 22, 2015 USD ($) ft² | May. 29, 2015 USD ($) a | Feb. 27, 2015 USD ($) | Jan. 30, 2015 USD ($) | Jun. 30, 2015 USD ($) a ft² Room property real_estate_venture building apartment_unit | Dec. 31, 2014 USD ($) | Jun. 30, 2014 ft² real_estate_venture | Dec. 19, 2007 ft² Properties
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Number of unconsolidated investments in Real Estate Ventures | real_estate_venture |  |  |  |  | 18 |  | 17 |
Equity method Investments including net liabilities |  |  |  |  | $ 199,800 |  |  |
Company's share of equity (Company's basis) |  |  |  |  | $ 201,034 | $ 225,004 |  |
Number of negative investment real estate ventures | real_estate_venture |  |  |  |  | 1 |  |  |
Number of real estate ventures that owns buildings | real_estate_venture |  |  |  |  | 10 |  |  |
Number of office buildings in Real Estate Ventures | building |  |  |  |  | 58 |  |  |
Aggregate approximate area of office buildings | ft² |  |  |  |  | 5,600,000 |  |  |
Number of real estate ventures that owns undeveloped land | real_estate_venture |  |  |  |  | 4 |  |  |
Area owned by real estate venture of undeveloped parcels of land | a |  |  |  |  | 5.2 |  |  |
Number of real estate ventures that owns land under development | real_estate_venture |  |  |  |  | 2 |  |  |
Area owned by real estate venture in parcels of land under development | a |  |  |  |  | 21.8 |  |  |
Number of real estate Investments in residential towers | real_estate_venture |  |  |  |  | 1 |  |  |
Number of apartment units in a real estate Venture | apartment_unit |  |  |  |  | 345 |  |  |
Number of real estate ventures developed hotel property | real_estate_venture |  |  |  |  | 1 |  |  |
Number of rooms contain in one real estate venture developed as hotel property | Room |  |  |  |  | 137 |  |  |
Minimum percentage of unconsolidated equity method investment ownership |  |  |  |  | 20.00% |  |  |
Maximum percentage of unconsolidated equity method investment ownership |  |  |  |  | 70.00% |  |  |
Number of Properties | property |  |  |  |  | 9 |  |  |
Rentable Square Feet | ft² |  |  |  |  | 985,914 |  |  |
River Place [Member] |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Proceeds from collection of notes receivable |  |  |  | $ 88,000 |  |  |  |
Coppell Associates [Member] |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Company's share of equity (Company's basis) |  |  |  |  | $ (1,200) | $ (1,200) |  |
51 N 50 Patterson [Member] |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Area owned by real estate venture of undeveloped parcels of land | a |  | 0.9 |  |  |  |  |  |
Ownership percentage |  | 70.00% |  |  |  |  |  |
Payments to acquire land |  | $ 15,200 |  |  |  |  |  |
1250 First Street Office [Member] |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Area owned by real estate venture of undeveloped parcels of land | a |  | 0.5 |  |  |  |  |  |
Ownership percentage |  | 70.00% |  |  |  |  |  |
Payments to acquire land |  | $ 13,200 |  |  |  |  |  |
GI Interchange Office LLC (DRA — N. PA) [Member] |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Number of Properties | Properties |  |  |  |  |  |  |  | 29
Rentable Square Feet | ft² |  |  |  |  |  |  |  | 1,611,961
Non-recourse debt |  |  | $ 174,200 |  |  |  |  |
Lender extension term |  |  | 60 days |  |  |  |  |
Unconsolidated Real Estate Ventures [Member] |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Net rentable square feet | ft² |  |  |  |  | 5,600,000 |  | 5,900,000 |
TB-BDN Plymouth Apartments [Member] |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Guarantor obligations, current carrying value |  |  |  |  | $ 3,200 |  |  |
The Grove at Cira Centre South [Member] |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Guarantor obligations, current carrying value |  |  |  |  | 24,700 |  |  |
PJP VII [Member] |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Guarantor obligations, current carrying value |  |  |  |  | $ 500 |  |  |
JBG [Member] | 51 N 50 Patterson [Member] |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Ownership percentage |  | 30.00% |  |  |  |  |  |
Payments to acquire land |  | $ 6,500 |  |  |  |  |  |
JBG [Member] | 1250 First Street Office [Member] |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Ownership percentage |  | 30.00% |  |  |  |  |  |
Payments to acquire land |  | $ 5,700 |  |  |  |  |  |
Brandywine Realty Trust [Member] | GI Interchange Office LLC (DRA — N. PA) [Member] |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  |  |  |  | 20.00%
Broadmoor Austin Associates [Member] |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Ownership percentage | 50.00% |  |  |  |  |  |  |
Payments to acquire land | $ 143,800 |  |  |  |  |  |  |
Rentable Square Feet | ft² | 1,112,236 |  |  |  |  |  |  |

X
- Definition Aggregate Approximate Area Of Office Buildings + References No definition available. + Details
Name: | bdn_AggregateApproximateAreaOfOfficeBuildings
Namespace Prefix: | bdn_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Area Owned By Real Estate Venture in Parcels Of Land Under Development + References No definition available. + Details
Name: | bdn_AreaOwnedByRealEstateVentureInParcelsOfLandUnderDevelopment
Namespace Prefix: | bdn_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Area owned by Real estate venture of undeveloped parcels of land (in acres). + References No definition available. + Details
Name: | bdn_AreaOwnedByRealEstateVentureOfUndevelopedParcelsOfLand
Namespace Prefix: | bdn_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Debt Instrument, Maturity Date Extension Term + References No definition available. + Details
Name: | bdn_DebtInstrumentMaturityDateExtensionTerm
Namespace Prefix: | bdn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Equity Method Investments including net liabilities + References No definition available. + Details
Name: | bdn_EquityMethodInvestmentsincludingnetliabilities
Namespace Prefix: | bdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Maximum Percentage of Unconsolidated Equity Method Investment Ownership. + References No definition available. + Details
Name: | bdn_MaximumPercentageOfUnconsolidatedEquityMethodInvestmentOwnership
Namespace Prefix: | bdn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum percentage of unconsolidated equity method investment ownership. + References No definition available. + Details
Name: | bdn_MinimumPercentageOfUnconsolidatedEquityMethodInvestmentOwnership
Namespace Prefix: | bdn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of office buildings in Real Estate Ventures. + References No definition available. + Details
Name: | bdn_NumberOfOfficeBuildingsInRealEstateVentures
Namespace Prefix: | bdn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of real estate ventures developed hotel property + References No definition available. + Details
Name: | bdn_NumberOfRealEstateVenturesDevelopedHotelProperty
Namespace Prefix: | bdn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of real estate ventures that owns buildings. + References No definition available. + Details
Name: | bdn_NumberOfRealEstateVenturesThatOwnsBuildings
Namespace Prefix: | bdn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of real estate ventures that owns land under development + References No definition available. + Details
Name: | bdn_NumberOfRealEstateVenturesThatOwnsLandUnderDevelopment
Namespace Prefix: | bdn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of real estate ventures that owns undeveloped land + References No definition available. + Details
Name: | bdn_NumberOfRealEstateVenturesThatOwnsUndevelopedLand
Namespace Prefix: | bdn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of rooms contain in one real estate venture developed as Hotel Property. + References No definition available. + Details
Name: | bdn_NumberOfRoomsContainInOneRealEstateVentureDevelopedAsHotelProperty
Namespace Prefix: | bdn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of unconsolidated investments in Real Estate Ventures. + References No definition available. + Details
Name: | bdn_NumberOfUnconsolidatedInvestmentsInRealEstateVentures
Namespace Prefix: | bdn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Real Estate Investments in residential towers. + References No definition available. + Details
Name: | bdn_NumberofRealEstateInvestmentsinresidentialtowers
Namespace Prefix: | bdn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Real Estate Ventures with Negative Investment Balances + References No definition available. + Details
Name: | bdn_NumberofRealEstateVentureswithNegativeInvestmentBalances
Namespace Prefix: | bdn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of apartment units in a Real Estate Venture. + References No definition available. + Details
Name: | bdn_NumberofapartmentunitsinaRealEstateVenture
Namespace Prefix: | bdn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Area of a real estate property. + References No definition available. + Details
Name: | us-gaap_AreaOfRealEstateProperty
Namespace Prefix: | us-gaap_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570 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 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_EquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents a non-contingent liability for the fair value of an obligation to stand ready to perform over the term of a guaranty issued in the event that specified triggering events or conditions occur. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 25 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=7661617&loc=d3e11049-110243 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 210.7-03.15) -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 210.9-03.15) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 25 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7661617&loc=d3e11019-110243 + Details
Name: | us-gaap_GuarantyLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Net rentable area for properties owned. + References No definition available. + Details
Name: | us-gaap_NetRentableArea
Namespace Prefix: | us-gaap_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of debt for which creditor does not have general recourse to the debtor but rather has recourse only to the property used for collateral in the transaction or other specific property. + References No definition available. + Details
Name: | us-gaap_NonRecourseDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfRealEstateProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash outflow from the acquisition of real estate intended to generate income for the owner; excludes land acquired for use by the owner. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireLand
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow associated with principal collections from a borrowing supported by a written promise to pay an obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromCollectionOfNotesReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=bdn_RiverPlaceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=bdn_CoppellAssociatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=bdn_A51N50PattersonHoldingsLLCVentureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=bdn_A1250FirstStreetOfficeLLCVentureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=bdn_GiInterchangeOfficeLlcDraNPaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=us-gaap_CorporateJointVentureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=bdn_TbBdnPlymouthApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=bdn_GroveAtCiraCentreSouthMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=bdn_PjpViiMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bdn_JointVentureMembersAxis=bdn_JBGDCManagerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bdn_JointVentureMembersAxis=bdn_BrandywineRealtyTrustMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=bdn_BroadmoorAustinAssociatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |