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Financial instruments by category (Details 1) - ARS ($)
$ in Millions
Jun. 30, 2018
Jun. 30, 2017
Disclosure of fair value measurement of liabilities [line items]    
Net amount presented $ 101,801 $ 66,906
Net amount presented 217,087 145,749
Trade And Other Payables [Member]    
Disclosure of fair value measurement of liabilities [line items]    
Gross amounts recognized 11,140 17,037
Gross amounts offset (875) (871)
Net amount presented 10,265 16,166
Trade And Other Receivables Excluding The Allowance For Doubtful Accounts And Other Receivables [Member]    
Disclosure of fair value measurement of liabilities [line items]    
Gross amounts recognized 19,523 19,602
Gross amounts offset (875) (871)
Net amount presented $ 18,648 $ 18,731