| Document and Entity Information | Nov. 14, 2023 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Nov. 14, 2023 |
| Entity Registrant Name | Cannabist Co Holdings Inc. |
| Entity Incorporation State Country Code | A1 |
| Entity File Number | 000-56294 |
| Entity Tax Identification Number | 98-1488978 |
| Entity Address Address Line 1 | 680 Fifth Ave. |
| Entity Address Address Line 2 | 24th Floor |
| Entity Address City Or Town | New York |
| Entity Address State Or Province | NY |
| Entity Address Postal Zip Code | 10019 |
| City Area Code | 212 |
| Local Phone Number | 634-7100 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Entity Central Index Key | 0001776738 |
| Amendment Flag | false |
