Financial instruments and risk management (Details) - Schedule of reasonably alternative assumptions for the valuation of the option component of the convertible loan - CHF (SFr)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Financial instruments and risk management (Details) - Schedule of reasonably alternative assumptions for the valuation of the option component of the convertible loan [Line Items]    
Change in volatility (5.00%)
Effect on result before taxes on CHF
Change in volatility [Member]    
Financial instruments and risk management (Details) - Schedule of reasonably alternative assumptions for the valuation of the option component of the convertible loan [Line Items]    
Change in volatility 5.00%
Effect on result before taxes on CHF