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Stock Option and Incentive Plan (Tables) | 12 Months Ended
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Dec. 31, 2023
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Share-based Payment Arrangement, Option, Activity | A summary of the status of BXP’s stock options as of December 31, 2023, 2022 and 2021 and changes during the years then ended are presented below:
|  | Shares |  | Weighted-Average Exercise Price
Outstanding at December 31, 2020 |  | 351,561 |  |  | $ | 96.97 |
Exercised |  | (247,920) |  |  | $ | 96.95 |
Outstanding at December 31, 2021 |  | 103,641 |  |  | $ | 97.01 |
Exercised |  | — |  |  | $ | — |
Outstanding at December 31, 2022 |  | 103,641 |  |  | $ | 97.01 |
Forfeited |  | (103,641) |  |  | $ | — |
Outstanding at December 31, 2023 |  | — |  |  | $ | — |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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