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Employee benefits and share-based payments (Details 1)
$ / shares in Units, $ in Millions
 12 Months Ended
Jun. 30, 2020
ARS ($)
$ / shares
Cellcom [Member]  
Disclosure of associates [line items]  
Average price of outstanding options $ 17.8
Amount of outstanding options | $ $ 759,332
Average remaining useful life 3 years 4 months 24 days
Bottom Of Range [Member] | Cellcom [Member]  
Disclosure of associates [line items]  
Exercise price range of outstanding options $ 15.05
Top Of Range [Member] | Cellcom [Member]  
Disclosure of associates [line items]  
Exercise price range of outstanding options 27.7
Discount Investment Corporation Ltd. [Member]  
Disclosure of associates [line items]  
Average price of outstanding options $ 672
Amount of outstanding options | $ $ 2,124,000
Average remaining useful life 4 years 5 months 5 days
Discount Investment Corporation Ltd. [Member] | Bottom Of Range [Member]  
Disclosure of associates [line items]  
Exercise price range of outstanding options $ 6.90
Discount Investment Corporation Ltd. [Member] | Top Of Range [Member]  
Disclosure of associates [line items]  
Exercise price range of outstanding options $ 12.5