v3.25.4
Liquidity risk - Narrative (Details) - CHF (SFr)
SFr in Millions
Dec. 31, 2025
Dec. 31, 2024
Jul. 07, 2023
Disclosure of detailed information about borrowings [line items]      
Accrued expenses SFr 204.3 SFr 184.4  
Bank overdraft facility four, CHF      
Disclosure of detailed information about borrowings [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
Credit facility extension period     2 years
Borrowings 0.0 0.0  
Bank guarantee SFr 153.2 SFr 168.3