Right-of-use assets - Narrative (Details) - CHF (SFr) SFr in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Disclosure of quantitative information about right-of-use assets [line items] | ||
| Additions | SFr 103.4 | SFr 43.4 |
| Lease modification | (2.0) | 45.5 |
| Income from subleasing right-of-use assets | 0.8 | 0.3 |
| Storage | ||
| Disclosure of quantitative information about right-of-use assets [line items] | ||
| Additions | 66.0 | 0.0 |
| Lease modification | 2.1 | SFr 52.4 |
| Leased locations | ||
| Disclosure of quantitative information about right-of-use assets [line items] | ||
| Additions | SFr 35.1 | |