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Commitments and contingencies - Narrative (Details)
€ in Millions, $ in Millions
3 Months Ended
Apr. 22, 2022
AUD ($)
Jun. 30, 2023
AUD ($)
Jun. 30, 2023
EUR (€)
Dec. 31, 2023
claim
Australian Competition and Consumer Commission (ACCC) | Pending Litigation        
Loss Contingencies [Line Items]        
Penalty judgment | $ $ 44.7      
Penalty payment   $ 44.7 € 29.6  
Advertising And Display Practices Allegations        
Loss Contingencies [Line Items]        
Number of claims | claim       2