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(Common Units) (Narrative) (Details) $ / shares in Units, $ in Thousands |  | 9 Months Ended |
--- | --- | --- | ---
Feb. 01, 2024 USD ($) shares | Sep. 30, 2024 USD ($) yr $ / shares shares | Dec. 31, 2023 USD ($)
Boston Properties Limited Partnership |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |
Redeemable Noncontrolling Interest, Equity, Preferred, Carrying Amount | $ |  | $ 1,500,501 | $ 1,347,575
MYLTIP | Boston Properties Limited Partnership |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |
Vesting Period |  | 3 years |
Unvested MYLTIP Units [Member] |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |
unvested MYLTIP distributions as compared to total distributions (percentage) |  | 10.00% |
MYLTIP 2021 |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |
Final awards percentage of target | 112.00% |  |
Value of MYLTIP Awards | $ | $ 12,600 |  |
Forfeitures, in units | 155,625 |  |
OP Units [Member] |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |
OP Units for redemption (in shares) |  | 951,881 |
Restriction on redemption of OP Unit to Common Stock (in years) | yr |  | 1 |
Redemption of OP Unit equivalent to Common Stock (in shares) |  | 1 |
Redeemable Noncontrolling Interest, Equity, Preferred, Carrying Amount | $ |  | $ 1,500,000 |
Closing price of common stock (in dollars per share) | $ / shares |  | $ 80.46 |
Vested 2012 OPP units and MYLTIPS |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |
OP Units for redemption (in shares) |  | 105,814 |

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