Share capital - Conditional share capital for financing and other purposes (Details) |
Dec. 31, 2025
CHF (SFr)
SFr / shares
shares
|
|---|---|
| Conditional Share Capital [Abstract] | |
| Nominal value per share (in CHF per share) | SFr 0.02 |
| Conditional share capital for financing and other purposes | |
| Conditional Share Capital [Abstract] | |
| Nominal value per share (in CHF per share) | SFr 0.02 |
| Conditional share capital for financing and other purposes | Maximum | |
| Conditional Share Capital [Abstract] | |
| Potential increase is equity through conversion of debt instruments | SFr | SFr 100,000 |
| Potential number of shares issued from conversion of debt instruments | shares | 5,000,000 |