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Financial risk management - Additional Information (Detail)
$ in Millions
Feb. 09, 2021
USD ($)
Dec. 31, 2021
EUR (€)
Currency risk [member] | USD [member]    
Statement Of Lineitems [Line Items]    
Trade payables to suppliers   € 173,600,000
Currency risk [member] | CHF [member]    
Statement Of Lineitems [Line Items]    
Trade payables to suppliers   100,000
Interest Rate Risk [Member]    
Statement Of Lineitems [Line Items]    
Cash   209,400,000
Borrowings   0
Credit risk [member]    
Statement Of Lineitems [Line Items]    
Financial assets   0
Liquidity risk [member]    
Statement Of Lineitems [Line Items]    
Cash   € 209,400,000
Net proceeds from initial public offering | $ $ 176.9