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Financial risk management - Narrative (Details)
$ in Thousands, R$ in Millions
 9 Months Ended
Sep. 30, 2025
USD ($)
bank
Sep. 30, 2024
USD ($)
Jul. 31, 2024
BRL (R$)
Dec. 31, 2020
BRL (R$)
Disclosure of major customers [line items]        
Gain (loss) on hedge ineffectiveness recognised in other comprehensive income | $ $ 0 $ (601)    
Reclassification adjustments on cash flow hedges for which hedged item affected profit or loss, net of tax | $ $ 0 $ 28,224    
Number of major banks | bank 3      
Currency Risk, US Dollar Against Brazil Real        
Disclosure of major customers [line items]        
Sensitivity analysis for types of market risk (as a percent) 10.00%      
Currency Risk, US Dollar Against Argentine Peso        
Disclosure of major customers [line items]        
Sensitivity analysis for types of market risk (as a percent) 25.00%      
Credit risk        
Disclosure of major customers [line items]        
Proportion of total cash deposited in major banks (as a percent) 80.00%      
Interest rate risk | Itau BBA FINAME Loan        
Disclosure of major customers [line items]        
Nominal amount       R$ 400
Interest rate risk | Itau BBA FINAME Loan | Fixed        
Disclosure of major customers [line items]        
Borrowings, interest rate       4.24%
Interest rate risk | Itau BBA FINAME Loan | Variable rate        
Disclosure of major customers [line items]        
Borrowings, interest rate       1.85%
Interest rate risk | Itau BBA FINAME Loan Due July 2034        
Disclosure of major customers [line items]        
Nominal amount     R$ 76  
Interest rate risk | Itau BBA FINAME Loan Due July 2034 | Fixed        
Disclosure of major customers [line items]        
Borrowings, interest rate     6.80%  
Interest rate risk | Itau BBA FINAME Loan Due July 2034 | Variable rate        
Disclosure of major customers [line items]        
Borrowings, interest rate     0.49%  
Interest rate risk | BR Partners Due July 2031        
Disclosure of major customers [line items]        
Nominal amount     R$ 115  
Interest rate risk | BR Partners Due July 2031 | Fixed        
Disclosure of major customers [line items]        
Borrowings, interest rate     6.76%  
Interest rate risk | BR Partners Due July 2031 | Variable rate        
Disclosure of major customers [line items]        
Borrowings, interest rate     0.41%  
Interest rate risk | XP Investimentos Loan Due July 2031        
Disclosure of major customers [line items]        
Nominal amount     R$ 209  
Interest rate risk | XP Investimentos Loan Due July 2031 | Fixed        
Disclosure of major customers [line items]        
Borrowings, interest rate     12.61%  
Interest rate risk | XP Investimentos Loan Due July 2031 | Variable rate        
Disclosure of major customers [line items]        
Borrowings, interest rate     0.48%  
Currency risk | Argentine Peso | Swap contract        
Disclosure of major customers [line items]        
Gain (loss) on hedge ineffectiveness recognised in profit or loss | $ $ (1,900)