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Financial instruments by category (Details 3) - ARS ($)
 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Statement [Line Items]    
Additions and acquisitions   $ 53,000,000
Transfer between levels   527,000,000
Currency translation adjustments $ (4,000,000) 1,230,000,000
Write off   (2,383,000,000)
Gain / (loss) for the year 9,000,000 (749,000,000)
Derivative Financial Instruments [Member]    
Statement [Line Items]    
Additions and acquisitions   0
Transfer between levels   527,000,000
Currency translation adjustments 0 368,000,000
Write off   (916,000,000)
Gain / (loss) for the year 0 30,000,000
Derivative Financial Instruments [Member] | Forwards [Member]    
Statement [Line Items]    
Additions and acquisitions   0
Transfer between levels   0
Currency translation adjustments 0 (10,000,000)
Write off   0
Gain / (loss) for the year 0 84,000,000
Investments In Financial Assets [Member] | Private Companies Securities [Member]    
Statement [Line Items]    
Additions and acquisitions   53,000,000
Transfer between levels   0
Currency translation adjustments 0 714,000,000
Write off   0
Gain / (loss) for the year 0 (318,000,000)
Investments In Financial Assets [Member] | Total Others [Member]    
Statement [Line Items]    
Additions and acquisitions   0
Transfer between levels   0
Currency translation adjustments (4,000,000) 158,000,000
Write off   (1,467,000,000)
Gain / (loss) for the year $ 9,000,000 $ (545,000,000)