Consolidated Statement of Profit or Loss and Other Comprehensive Income/(Loss) (Parentheticals) - CHF (SFr)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
[1]
Dec. 31, 2020
Consolidated Statement Of Profit Or Loss And Other Comprehensive Income Loss Abstract      
Remeasurements of defined benefit liability, net of taxes SFr 0 SFr 0 SFr 0
Foreign currency translation differences, tax 0 0 0
Other comprehensive income/(loss), net SFr 0 SFr 0 SFr 0
Diluted loss per share (in Francs per share) (in Francs per share) SFr (29.13) SFr (25.76) SFr (25.27)
[1] Revised, see note 33.