| Cover | Aug. 26, 2024 |
| Entity Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Aug. 26, 2024 |
| Entity Registrant Name | BXP, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 1-13087 |
| Entity Tax Identification Number | 04-2473675 |
| Entity Address, Address Line One | 800 Boylston Street, Suite 1900 |
| Entity Address, City or Town | Boston |
| Entity Address, State or Province | MA |
| Entity Address, Postal Zip Code | 02199 |
| City Area Code | 617 |
| Local Phone Number | 236-3300 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001037540 |
| Amendment Flag | false |
| Title of 12(b) Security | Common Stock, par value $0.01 per share |
| Trading Symbol | BXP |
| Security Exchange Name | NYSE |
| Boston Properties Limited Partnership [Member] | |
| Entity Information [Line Items] | |
| Entity Registrant Name | BOSTON PROPERTIES LIMITED PARTNERSHIP |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 0-50209 |
| Entity Tax Identification Number | 04-3372948 |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001043121 |
| Amendment Flag | false |
