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Stock Option and Incentive Plan (Narrative) (Details) - USD ($) $ in Thousands | Feb. 07, 2023 | Feb. 03, 2023
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MYLTIP 2020 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Value of MYLTIP Awards |  | $ 3,800
Final awards percentage of target |  | 50.00%
Forfeitures, in units |  | 152,460
MYLTIP 2023 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award | The 2023 MYLTIP awards consist of two, equally weighted (50% each) components that utilize BXP’s TSR over a three-year measurement period as the performance metric. |
Distributions percent before measurement date | 10.00% |
Vesting Period | 3 years |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights | Earned awards (if any) will vest 100% on February 6, 2026, but, in general, may not be converted, redeemed, sold or otherwise transferred for one additional year thereafter. |
Value of MYLTIP Awards | $ 13,100 |
Minimum [Member] | MYLTIP 2023 | Boston Properties Limited Partnership |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Common stock available for issuance | 0 |
Maximum [Member] | MYLTIP 2023 | Boston Properties Limited Partnership |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Common stock available for issuance | 322,053 |
Target | MYLTIP 2023 | Boston Properties Limited Partnership |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Common stock available for issuance | 161,026 |

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