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Critical accounting estimates and judgments - Allocated Goodwill to CGUs in Brazil (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Sep. 30, 2022
Dec. 31, 2021
Sep. 30, 2021
Disclosure of information for cash-generating units [line items]        
Total assets allocated to CGUs tested $ 3,108,855   $ 2,582,401  
Sugar, Ethanol and Energy | AVI        
Disclosure of information for cash-generating units [line items]        
Closing net book value of goodwill allocated to CGUs tested (Note 15)   $ 2,937   $ 2,919
Sugar, Ethanol and Energy | UMA        
Disclosure of information for cash-generating units [line items]        
Closing net book value of goodwill allocated to CGUs tested (Note 15)   1,102   1,095
Brazil | Cash-generating units        
Disclosure of information for cash-generating units [line items]        
Closing net book value of goodwill allocated to CGUs tested (Note 15) $ 4,200 4,039   4,014
Closing net book value of PPE items allocated to CGUs tested   518,814   469,434
Total assets allocated to CGUs tested   $ 522,853   $ 473,448