Earnings per share - Schedule of Earnings per Share (Details) - CHF (SFr) SFr / shares in Units, SFr in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2024 |
Jun. 30, 2023 |
Jun. 30, 2024 |
Jun. 30, 2023 |
|
| Earnings per share [line items] | ||||
| Net income | SFr 30.8 | SFr 3.3 | SFr 122.2 | SFr 47.7 |
| Class A | ||||
| Earnings per share [line items] | ||||
| Weighted number of outstanding shares (in shares) | 288,082,955 | 284,127,877 | 287,985,587 | 283,859,171 |
| Weighted number of shares with dilutive effects (in shares) | 3,430,738 | 3,464,956 | 3,366,411 | 3,335,726 |
| Weighted number of outstanding shares (diluted and undiluted) (in shares) | 291,513,693 | 287,592,833 | 291,351,998 | 287,194,897 |
| Net income | SFr 27.5 | SFr 2.9 | SFr 109.1 | SFr 42.5 |
| Basic EPS (CHF) (in CHF per share) | SFr 0.10 | SFr 0.01 | SFr 0.38 | SFr 0.15 |
| Diluted EPS (CHF) (in CHF per share) | SFr 0.09 | SFr 0.01 | SFr 0.37 | SFr 0.15 |
| Class B | ||||
| Earnings per share [line items] | ||||
| Weighted number of outstanding shares (in shares) | 345,437,500 | 345,437,500 | 345,437,500 | 345,437,500 |
| Weighted number of shares with dilutive effects (in shares) | 12,467,091 | 11,792,673 | 12,174,230 | 11,203,866 |
| Weighted number of outstanding shares (diluted and undiluted) (in shares) | 357,904,591 | 357,230,173 | 357,611,730 | 356,641,366 |
| Net income | SFr 3.3 | SFr 0.4 | SFr 13.1 | SFr 5.2 |
| Basic EPS (CHF) (in CHF per share) | SFr 0.01 | SFr 0.00 | SFr 0.04 | SFr 0.01 |
| Diluted EPS (CHF) (in CHF per share) | SFr 0.01 | SFr 0.00 | SFr 0.04 | SFr 0.01 |