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Financial risk management and fair value estimates (Details) - Market Risk [Member] - Agricultural Business [Member] - USD - ARS ($)
$ in Millions
Jun. 30, 2020
Jun. 30, 2019
Disclosure of risk management strategy related to hedge accounting [line items]    
Net monetary position (Liability)/Asset $ (31,251) $ (25,396)
Argentine Peso [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Net monetary position (Liability)/Asset (31,328) (25,618)
Brazilian Reais [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Net monetary position (Liability)/Asset 180 332
Bolivian Peso [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Net monetary position (Liability)/Asset $ (103) $ (110)