v3.24.2.u1
Provisions (Details) - CHF (SFr)
SFr in Millions
 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Disclosure of Provisions [Line Items]        
Beginning balance SFr 17.1 SFr 12.1    
Additions 14.6 6.0    
Release (0.4) (0.8)    
Utilization (3.2) (0.6)    
Exchange differences 0.0 (0.1)    
Ending balance 28.2 16.7    
thereof current 16.8 8.6 SFr 7.1 SFr 5.0
thereof non-current 11.4 8.1 10.0 7.2
Social charges        
Disclosure of Provisions [Line Items]        
Beginning balance 6.8 4.3    
Additions 13.0 4.2    
Release (0.4) 0.0    
Utilization (3.2) (0.6)    
Exchange differences (0.1) 0.0    
Ending balance 16.1 7.9    
thereof current 15.6 7.9 6.3 4.3
thereof non-current 0.5 0.0 0.5 0.0
Long-service leave        
Disclosure of Provisions [Line Items]        
Beginning balance 5.8 3.8    
Additions 1.4 1.8    
Release (0.1) (0.7)    
Utilization 0.0 0.0    
Exchange differences 0.1 (0.1)    
Ending balance 7.2 4.8    
thereof current 1.0 0.5 0.7 0.5
thereof non-current 6.2 4.3 5.1 3.3
Asset retirement obligation        
Disclosure of Provisions [Line Items]        
Beginning balance 4.5 4.0    
Additions 0.3 0.0    
Release 0.0 0.0    
Utilization 0.0 0.0    
Exchange differences 0.0 (0.1)    
Ending balance 4.9 4.0    
thereof current 0.2 0.1 0.1 0.2
thereof non-current SFr 4.6 SFr 3.8 SFr 4.3 SFr 3.8