XML 128 R71.htm IDEA: XBRL DOCUMENT v3.22.4
Share capital - Conditional share capital for employee benefit plans (Details)
 12 Months Ended
Dec. 31, 2022
CHF (SFr)
SFr / shares
shares
Conditional Share Capital [Abstract]  
Nominal value per share (in CHF per share) SFr 0.02
Employee Benefit Plans [Member]  
Conditional Share Capital [Abstract]  
Nominal value per share (in CHF per share) SFr 0.02
Employee Benefit Plans [Member] | Top of Range [Member]  
Conditional Share Capital [Abstract]  
Maximum aggregate amount of ordinary shares | SFr SFr 96,000
Issuance of ordinary shares (in shares) | shares 4,800,000