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Financial risk management - Narrative (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
USD ($)
customer
bank
Dec. 31, 2020
USD ($)
customer
bank
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Disclosure of major customers [line items]        
Proportion of sales designated for hedging activities (as a percent) 10.00% 15.00%    
Gain on hedge ineffectiveness recognised in other comprehensive income $ 10,565 $ 46,145    
Reclassification adjustments on cash flow hedges for which hedged item affected profit or loss, net of tax (42,848) (26,031)    
Cash and cash equivalents $ 199,766 $ 336,282 $ 290,276 $ 273,635
Number of major banks | bank 4 6    
Gearing ratio 44.00% 50.00%    
Forward contract        
Disclosure of major customers [line items]        
Notional amount $ 75,900 $ 42,200 $ 71,700  
Bottom of range        
Disclosure of major customers [line items]        
Gearing ratio 40.00%      
Top of range        
Disclosure of major customers [line items]        
Gearing ratio 60.00%      
Credit risk        
Disclosure of major customers [line items]        
Number of major banks | bank 3      
Proportion of total cash deposited in major banks (as a percent) 81.00% 81.00%    
Credit risk | Crops        
Disclosure of major customers [line items]        
Proportion of sales (as a percent) 73.00% 80.00%    
Number of well-known customers | customer 27 36    
Credit risk | Ethanol        
Disclosure of major customers [line items]        
Proportion of sales (as a percent) 100.00% 100.00%    
Number of well-known customers | customer 39 52    
Credit risk | Sugar        
Disclosure of major customers [line items]        
Proportion of sales (as a percent) 86.00% 78.00%    
Number of well-known customers | customer 124 76    
Credit risk | Energy        
Disclosure of major customers [line items]        
Proportion of sales (as a percent) 95.00% 96.00%    
Number of well-known customers | customer 72 52    
Credit risk | Dairy        
Disclosure of major customers [line items]        
Proportion of sales (as a percent) 67.00% 65.00%    
Number of well-known customers | customer 18 21    
Interest rate risk | Itau BBA FINAME Loan        
Disclosure of major customers [line items]        
Notional amount   $ 400,000    
Interest rate risk | Floating interest rate        
Disclosure of major customers [line items]        
Interest rate on borrowings (as a percent)   1.85%    
Interest rate risk | Fixed interest rate        
Disclosure of major customers [line items]        
Interest rate on borrowings (as a percent)   4.24%    
Currency risk        
Disclosure of major customers [line items]        
Sensitivity analysis for types of market risk (as a percent) 10.00% 10.00%    
Argentine Peso | Currency risk | Forward contract        
Disclosure of major customers [line items]        
Gain (loss) on hedge ineffectiveness recognised in profit or loss $ (2,100) $ 1,800    
Brazilian Reais | Currency risk | Forward contract        
Disclosure of major customers [line items]        
Gain (loss) on hedge ineffectiveness recognised in profit or loss   $ (1,900)