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Revenues (Details) - ARS ($)
$ in Millions
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Revenue [abstract]      
Income from communication services $ 29,879 $ 25,548 $ 26,252
Rental and services income 20,992 19,253 19,678
Sale of communication equipment 10,357 8,782 8,810
Sale of trading properties and developments 5,806 3,034 3,221
Revenue from hotel operation and tourism services 2,227 1,826 1,671
Other revenues 506 381 37
Total Group's revenues $ 69,767 $ 58,824 $ 59,669