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Foreign currency risk (Tables)
 12 Months Ended
Dec. 31, 2022
Disclosure of Financial Risk Management [Abstract]  
Disclosure of Exchange Rates
The main exchange rates at the closing dates were the following:

Currency12/31/202212/31/2021
AUD 10.63 0.66 
BRL 10017.68 16.36 
CAD 10.68 0.72 
CNY 10013.26 14.33 
EUR 10.99 1.04 
GBP 11.11 1.23 
JPY 1000.70 0.79 
HKD 10.12 0.12 
USD 10.93 0.91 

The main annual average exchange rates were the following:

Currency12/31/202212/31/2021
AUD 10.67 0.70 
BRL 10018.49 17.23 
CAD 10.74 0.73 
CNY 10014.46 14.23 
EUR 11.02 1.10 
GBP 11.20 1.27 
JPY 1000.75 0.85 
HKD 10.13 0.12 
USD 10.96 0.92 
Financial assets and liabilities held in foreign currency
Financial assets and liabilities held in foreign currency as at December 31, 2022 and 2021, expressed in CHF, were as follows:

(CHF in millions)12/31/202212/31/2021
USDEURUSDEUR
Cash and cash equivalents184.6 9.2 710.0 2.1 
Trade receivables and other financial assets257.9 5.3 56.6 12.3 
Trade payables and other financial liabilities(42.9)(0.7)(5.2)(9.6)
Total assets and liabilities399.6 13.8 761.3 4.7 
Disclosure of Effect of Changes in Foreign Exchange Rates
(CHF in millions)12/31/202212/31/202112/31/2020
Change in USD/CHF +10%32.1 61.1 6.0 
Change in USD/CHF -10%(32.1)(61.1)(6.0)
Change in EUR/CHF +10%1.1 0.4 0.2 
Change in EUR/CHF -10%(1.1)(0.4)(0.2)