Segment information (Details) - CHF (SFr) SFr in Millions |
Dec. 31, 2023 |
Dec. 31, 2022 |
|---|---|---|
| Disclosure of operating segments [line items] | ||
| Non-current assets | SFr 441.7 | SFr 330.9 |
| Europe, Middle East and Africa | ||
| Disclosure of operating segments [line items] | ||
| Non-current assets | 270.4 | 246.8 |
| thereof Switzerland | ||
| Disclosure of operating segments [line items] | ||
| Non-current assets | 242.6 | 222.0 |
| Americas | ||
| Disclosure of operating segments [line items] | ||
| Non-current assets | 144.3 | 59.9 |
| thereof the United States | ||
| Disclosure of operating segments [line items] | ||
| Non-current assets | 142.2 | 58.5 |
| Asia-Pacific | ||
| Disclosure of operating segments [line items] | ||
| Non-current assets | SFr 27.1 | SFr 24.1 |