XML 100 R79.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Noncontrolling Interests Redeemable Property Partnerships (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] |  |  |
Beginning Balance | $ 104,692 | $ 99,609 | $ 97,558
Net Loss | (7) | (603) | (1,839)
Distributions | (2,900) | (6,000) | (4,585)
Adjustment to reflect redeemable partnership units at redemption value | 5,128 | 11,686 | 8,475
Acquisition of interest | (106,913) |  |
Ending Balance | $ 0 | $ 104,692 | $ 99,609

X
- Definition Acquisition of interest + References No definition available. + Details
Name: | bxp_Acquisitionofinterest
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Adjustment to Reflect Redeemable Interest at Redemption Value + References No definition available. + Details
Name: | bxp_AdjustmentToReflectRedeemableInterestAtRedemptionValue
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Distributions on Redeemable Property Partnership + References No definition available. + Details
Name: | bxp_DistributionsOnRedeemablePropertyPartnership
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Net Loss for Redeemable interest in Property Partnership + References No definition available. + Details
Name: | bxp_NetLossForRedeemableInterestInPropertyPartnership
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Temporary Equity, Carrying Amount Redeemable Interest in Property Partnerships + References No definition available. + Details
Name: | bxp_TemporaryEquityCarryingAmountRedeemableInterestInPropertyPartnerships
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_MovementInMinorityInterestRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration