XML 40 R43.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Real Estate Investments Acquisitions and Dispositions (Details) (USD $) | 3 Months Ended | 6 Months Ended |  |  | 0 Months Ended | 12 Months Ended |  |  | 0 Months Ended |  | 0 Months Ended |  | 6 Months Ended |  |  |  | 0 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | Dec. 31, 2013 | Apr. 16, 2014 West Point II Land [Member] acre | Apr. 07, 2014 Princeton Pike Corporate Center [Member] | Feb. 25, 2014 Princeton Pike Corporate Center [Member] | Feb. 25, 2013 Princeton Pike Corporate Center [Member] sqft Properties | Apr. 03, 2014 Four Points Centre [Member] Properties sqft Storey | Mar. 27, 2014 Rob Roy - Land [Member] acre | Apr. 03, 2014 Austin Joint Venture [Member] Four Points Centre [Member] | Feb. 19, 2014 Encino Trace - Land [Member] sqft acre Properties Storey | Jun. 30, 2014 Encino Trace - Building I [Member] | Jun. 30, 2014 One and Two Commerce Square [Member] | Dec. 31, 2013 One and Two Commerce Square [Member] | Dec. 19, 2013 One and Two Commerce Square [Member] Storey | Apr. 03, 2014 DRA Advisors LLC [Member] Austin Joint Venture [Member] Four Points Centre [Member] | Apr. 03, 2014 Brandywine Realty Trust [Member] Austin Joint Venture [Member] Four Points Centre [Member]
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate gross sales price of a joint venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 41,500,000
Gain from remeasurement of investment in real estate ventures | 458,000 | 7,847,000 | 458,000 | 7,847,000 |  |  |  |  |  |  |  |  |  |  | 500,000 |  |  |  |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25.00% |  |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Including Subsequent Acquisition, Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 99.00% |  |
Area Owned by Company of Undeveloped Parcels Of Land |  |  |  |  |  |  |  |  |  |  |  |  | 54.1 |  |  |  |  |  |
Total potential development capacity |  |  |  |  |  |  |  |  |  |  |  |  | 320,000 |  |  |  |  |  |
Number of Real Estate Properties |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |
Number of floors of a building |  |  |  |  |  |  |  |  |  | 3 |  |  | 4 |  |  |  | 41 |  |
Business Acquisition, Transaction Costs |  |  |  |  |  |  |  |  | 2,000,000 |  |  |  |  |  |  |  |  |  |
Net Rentable Space |  |  |  |  |  |  |  |  |  | 192,396 |  |  |  |  |  |  |  |  |
Accounts receivable, net | 21,622,000 |  | 21,622,000 |  | 17,389,000 |  |  |  |  |  |  |  |  |  | 2,100,000 | 1,600,000 |  |  |
Area of Land |  |  |  |  |  | 5.3 |  |  |  |  | 16.8 |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  |  |  |  |  |  |  |  |  | 14,000,000 |  |  |  |  |  |
Construction in Progress, Gross |  |  |  |  |  |  |  |  |  |  |  |  | 8,400,000 | 18,700,000 |  |  |  |  |
Land | 688,775,000 |  | 688,775,000 |  | 680,513,000 |  |  |  |  |  |  |  | 4,600,000 |  |  |  |  |  |
Number of real estate properties sold |  |  |  |  |  |  |  |  | 8 |  |  |  |  |  |  |  |  |  |
Net Rentable Space Sold |  |  |  |  |  |  |  |  | 800,546 |  |  |  |  |  |  |  |  |  |
Escrow Deposit |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 |  |  |  |  |  |
Land Sales |  |  |  |  |  | 1,600,000 |  |  | 121,000,000 |  | 3,500,000 |  |  |  |  |  |  |  |
Net gain (loss) on disposition of discontinued operations | 903,000 | (2,259,000) | 903,000 | 3,045,000 |  |  | 900,000 | 5,300,000 |  |  |  |  |  |  |  |  |  |  |
Number of Real Estate Properties |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |
Gain (Loss) on sale of undepreciated real estate | (3,000) | 0 | 1,184,000 | 0 |  |  |  |  |  |  | 1,200,000 |  |  |  |  |  |  |  |
Non-Recourse Debt |  |  |  |  |  |  |  |  |  |  |  | 29,000,000 |  |  |  |  |  |  |
Amount Of Participant Contribution |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,900,000 |
Proceeds from Equity Method Investment, Dividends or Distributions |  |  | 5,329,000 | 3,445,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 34,400,000
Equity method investment, credit to capital contribution |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,900,000
Gain (loss) on real estate venture transactions | $ (282,000) | $ 3,683,000 | $ (417,000) | $ 3,683,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (200,000)

X
- Definition Aggregate gross sales price of a joint venture + References No definition available. + Details
Name: | bdn_Aggregategrosssalespriceofajointventure
Namespace Prefix: | bdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of participant contribution. + References No definition available. + Details
Name: | bdn_AmountOfParticipantContribution
Namespace Prefix: | bdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Area Owned by Company of Undeveloped Parcels Of Land + References No definition available. + Details
Name: | bdn_AreaOwnedbyCompanyofUndevelopedParcelsOfLand
Namespace Prefix: | bdn_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Equity method investment, credit to capital contribution + References No definition available. + Details
Name: | bdn_Equitymethodinvestmentcredittocapitalcontribution
Namespace Prefix: | bdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Net Gain (Loss) On Real Estate Venture Transactions, including real estate venture formation + References No definition available. + Details
Name: | bdn_NetGainLossOnRealEstateVentureTransactionsincludingrealestateventureformation
Namespace Prefix: | bdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net gain (loss) on sale of undepreciated real estate + References No definition available. + Details
Name: | bdn_Netgainlossonsaleofundepreciatedrealestate
Namespace Prefix: | bdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net Rentable Space. + References No definition available. + Details
Name: | bdn_NetRentableSpace
Namespace Prefix: | bdn_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Net Rentable Space Sold. + References No definition available. + Details
Name: | bdn_NetRentableSpaceSold
Namespace Prefix: | bdn_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of floors of a building + References No definition available. + Details
Name: | bdn_NumberOfFloorsOfBuilding
Namespace Prefix: | bdn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of potential development properties + References No definition available. + Details
Name: | bdn_Numberofpotentialdevelopmentproperties
Namespace Prefix: | bdn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of real estate properties sold + References No definition available. + Details
Name: | bdn_NumberOfRealEstatePropertiesSold
Namespace Prefix: | bdn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Sale Consideration Of Sold Property. + References No definition available. + Details
Name: | bdn_SaleConsiderationOfSoldProperty
Namespace Prefix: | bdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of development that can be supported by undeveloped land + References No definition available. + Details
Name: | bdn_TotalPotentialDevelopmentCapacity
Namespace Prefix: | bdn_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition For an unclassified balance sheet, the amount due from customers or clients for goods or services that have been delivered or sold in the normal course of business, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 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 210.9-03.9) -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 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.5) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_AccountsReceivableNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Area of land held. + References No definition available. + Details
Name: | us-gaap_AreaOfLand
Namespace Prefix: | us-gaap_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition. + References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage of voting equity interests acquired in a business combination achieved in stages, including equity interests in the acquiree held by the acquirer immediately before the acquisition date and acquired at the acquisition date. + References No definition available. + Details
Name: | us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeIncludingSubsequentAcquisitionPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of equity in the acquiree held by the acquirer immediately before the acquisition date in a business combination. + References No definition available. + Details
Name: | us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g)(2) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
Name: | us-gaap_ConstructionInProgressGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e957-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 + Details
Name: | us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13 -Article 5 + Details
Name: | us-gaap_EquityMethodInvestmentDividendsOrDistributions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_EscrowDeposit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount before accumulated depletion of real estate held for productive use, excluding land held for sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6812-107765 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 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_Land
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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
- Details
Name: | us-gaap_SignificantAcquisitionsAndDisposalsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration