v3.25.4
Earnings per share - Schedule of Earnings per Share (Details) - CHF (SFr)
SFr / shares in Units, SFr in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Earnings per share [line items]      
Net income SFr 203.7 SFr 242.3 SFr 79.6
Class A      
Earnings per share [line items]      
Weighted number of outstanding shares (in shares) 295,550,380 288,465,380 284,262,802
Weighted number of shares with dilutive effects (in shares) 3,228,817 3,787,481 3,306,122
Weighted number of outstanding shares (diluted and undiluted) (in shares) 298,779,197 292,252,861 287,568,924
Net income SFr 182.7 SFr 216.3 SFr 70.9
Basic EPS (CHF) (in CHF per share) SFr 0.62 SFr 0.75 SFr 0.25
Diluted EPS (CHF) (in CHF per share) SFr 0.61 SFr 0.74 SFr 0.25
Class B      
Earnings per share [line items]      
Weighted number of outstanding shares (in shares) 339,541,070 345,437,500 345,437,500
Weighted number of shares with dilutive effects (in shares) 11,251,482 12,822,456 11,446,403
Weighted number of outstanding shares (diluted and undiluted) (in shares) 350,792,552 358,259,956 356,883,903
Net income SFr 21.0 SFr 25.9 SFr 8.6
Basic EPS (CHF) (in CHF per share) SFr 0.06 SFr 0.07 SFr 0.02
Diluted EPS (CHF) (in CHF per share) SFr 0.06 SFr 0.07 SFr 0.02