v3.26.1
Financial liabilities - Narrative (Details) - Bank overdraft facility four, CHF - CHF (SFr)
SFr in Millions
Jun. 30, 2026
Dec. 31, 2025
Jul. 07, 2023
Disclosure of financial liabilities [line items]      
Credit facility, maximum borrowing capacity     SFr 700.0
Line of credit facility option to increase amount     SFr 200.0
Initial term of facility agreement     3 years
Extension period     2 years
Borrowings SFr 0.0 SFr 0.0  
Contingent liability for guarantees      
Disclosure of financial liabilities [line items]      
Estimated financial effect of contingent liabilities SFr 163.2 SFr 153.2