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Employee benefits and share-based payments (Details) - ARS ($)
 12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2018
Employee Benefits And Share-based Payments [Abstract]      
At the beginning 4,966,463 5,485,194 5,834,676
Granted (482,807) (518,731) (349,482)
Disposals
At the end 4,483,656 4,966,463 5,485,194