XML 53 R38.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Investments in Unconsolidated Joint Ventures Purchase price allocation table (Details) - Santa Monica Business Park [Member] $ in Thousands | Jul. 19, 2018 USD ($)
--- | ---
Schedule of Asset Acquisition [Line Items] |
Land and improvements | $ 100,525
Leasehold interest in land | 248,944
Site improvements | 13,381
Building and improvements | 593,759
Tenant improvements | 31,338
In-place lease intangibles | 47,783
Above-market lease intangible | 4,495
Below-market lease intangible | (17,504)
Capital lease obligation | (396,008)
Net assets acquired | $ 626,713

X
- Definition Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assume Site Improvements + References No definition available. + Details
Name: | bxp_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumeSiteImprovements
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assumed Above Market Lease Intangible + References No definition available. + Details
Name: | bxp_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAboveMarketLeaseIntangible
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assumed Below Market Lease Intangible + References No definition available. + Details
Name: | bxp_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBelowMarketLeaseIntangible
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assumed Building and Improvements + References No definition available. + Details
Name: | bxp_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBuildingandImprovements
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assumed Capital Lease Obligation + References No definition available. + Details
Name: | bxp_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCapitalLeaseObligation
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assumed In Place Lease Intangibles + References No definition available. + Details
Name: | bxp_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInPlaceLeaseIntangibles
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assumed Land and Improvements + References No definition available. + Details
Name: | bxp_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLandandImprovements
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assumed Leasehold Interest in Land + References No definition available. + Details
Name: | bxp_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLeaseholdInterestinLand
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assumed Net Assets Acquired + References No definition available. + Details
Name: | bxp_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAssetsAcquired
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assumed Tenant Improvements + References No definition available. + Details
Name: | bxp_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTenantImprovements
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition [Line Items] for Schedule of Asset Acquisition [Table] + References No definition available. + Details
Name: | bxp_ScheduleofAssetAcquisitionLineItems
Namespace Prefix: | bxp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | bxp_AssetAcquistionAxis=bxp_SantaMonicaBusinessParkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |