Summary of significant accounting policies - Property and Equipment and cloud computing arrangements (Details) |
12 Months Ended |
|---|---|
Jan. 31, 2026 | |
| Equipment and fixtures | Minimum | |
| Property and equipment | |
| Estimated useful lives or the expected lease term | 1 year |
| Equipment and fixtures | Maximum | |
| Property and equipment | |
| Estimated useful lives or the expected lease term | 10 years |
| Electronic equipment and software | Minimum | |
| Property and equipment | |
| Estimated useful lives or the expected lease term | 3 years |
| Electronic equipment and software | Maximum | |
| Property and equipment | |
| Estimated useful lives or the expected lease term | 15 years |
| Cloud computing arrangements | Maximum | |
| Cloud computing arrangements | |
| Term of contract | 5 years |