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Related party transactions (Details 1) - ARS ($)
$ in Millions
Jun. 30, 2019
Jun. 30, 2018
Disclosure of transactions between related parties [line items]    
Total $ 1,951 $ 1,385
Trade and Other Receivables [Member]    
Disclosure of transactions between related parties [line items]    
Total 984 1,673
Investments in Financial Assets [Member]    
Disclosure of transactions between related parties [line items]    
Total 1,301 (69)
Trade and Other Payables [Member]    
Disclosure of transactions between related parties [line items]    
Total $ (334) $ (219)