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Number of shares authorized for issuance under share-based payment arrangement.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Description of terms of award under share-based payment arrangement.

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Stock Option and Incentive Plan (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands						12 Months Ended
	Feb. 01, 2024	Jan. 25, 2024	Feb. 03, 2023	Feb. 04, 2022	May 20, 2021	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period						4 years
Stock Issued During Period, Shares, Share-based Compensation, Forfeited							103,641
Weighted Average Exercise Price						$ 0	$ 0	$ 97.01	$ 97.01
2021 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Plan Expiration Period					10 years
MYLTIP 2023 \| Boston Properties Limited Partnership
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued							322,053
MYLTIP 2020 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period			3 years
Value of MYLTIP Awards			$ 3,800
Final awards percentage of target			50.00%
Forfeitures, in units			152,460
MYLTIP 2019 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period				3 years
Value of MYLTIP Awards				$ 8,600
Final awards percentage of target				69.00%
Forfeitures, in units				144,043
MYLTIP 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award		The 2024 MYLTIP awards consists of three components. Two of the components, each weighted 40%, utilize BXP’s TSR over a three-year measurement period as the performance metrics and the third component utilizes a leverage ratio as the performance metric.
Value of MYLTIP Awards		$ 11,100
MYLTIP 2024 \| Boston Properties Limited Partnership
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued						330,479
MYLTIP 2022 \| Boston Properties Limited Partnership
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued								254,061
MYLTIP 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period	3 years
Value of MYLTIP Awards	$ 12,600
Final awards percentage of target	112.00%
Forfeitures, in units	155,625
Minimum [Member] \| MYLTIP 2024 \| Boston Properties Limited Partnership
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock available for issuance		0
Maximum [Member] \| 2021 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock available for issuance					5,400,000
Maximum [Member] \| MYLTIP 2024 \| Boston Properties Limited Partnership
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock available for issuance		330,479
Target \| MYLTIP 2024 \| Boston Properties Limited Partnership
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock available for issuance		165,240