v3.25.2
Stock Option and Incentive Plan Stock and Units (Narrative) (Details)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jan. 31, 2025
USD ($)
shares
Jan. 22, 2025
USD ($)
shares
Jun. 30, 2025
USD ($)
shares
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
$ / shares
shares
Jun. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares issued     158,445,177   158,445,177   158,253,895
Stock based compensation expense | $     $ 11,600 $ 16,000 $ 34,600 $ 34,500  
Common Stock, Value, Issued | $     1,584   $ 1,584   $ 1,582
Restricted Stock [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares issued         55,571    
LTIP Units [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares Issued, Value, Share-Based Payment Arrangement, before Forfeiture | $         $ 27,000    
Unvested Restricted stock and LTIP Units [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Unrecognized compensation expenses | $     $ 28,300   $ 28,300    
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Annual Installments for Vesting         4    
MYLTIP 2025              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting Period   3 years          
Value of MYLTIP Awards | $   $ 12,700          
Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award   The 2025 MYLTIP awards consist of three components. Two of the components are each weighted 40% and utilize BXP’s TSR and BXP’s diluted Funds from Operations (“FFO”) per share growth, respectively, over a three-year measurement period as the performance metrics and the third component, weighted 20%, utilizes an average leverage ratio as the performance metric.          
MYLTIP 2022              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting Period 3 years            
Final awards percentage of target 59.00%            
Value of MYLTIP Awards | $ $ 5,400            
Boston Properties Limited Partnership | LTIP Units [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares issued         406,646    
Noncontrolling Interest, Outstanding [1]     2,720,300   2,720,300    
Boston Properties Limited Partnership | MYLTIP 2025              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Noncontrolling Interest, Outstanding     354,940   354,940    
Boston Properties Limited Partnership | MYLTIP 2025 | Maximum [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Common stock available for issuance   354,940          
Boston Properties Limited Partnership | MYLTIP 2025 | Minimum [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Common stock available for issuance   0          
Boston Properties Limited Partnership | MYLTIP 2025 | Target              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Common stock available for issuance   177,470          
Boston Properties Limited Partnership | MYLTIP 2022              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Forfeitures, in units 177,919            
Restricted Stock [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Common Stock, Value, Issued | $     $ 4,000   $ 4,000    
Unvested MYLTIP Units [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Unrecognized compensation expenses | $     $ 800   $ 800    
Weighted-average period (years)         2 years 7 months 6 days    
LTIP and MYLTIP Units [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Employee and director payment per share (in dollars per share) | $ / shares         $ 0.25    
[1] Includes 655,534 LTIP Units earned by employees under the Company’s multi-year long-term incentive awards granted between 2012 and 2022 (i.e., 2012 OPP and 2013 - 2022 MYLTIP awards).