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Revenues (Details) - ARS ($)
$ in Millions
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Revenue [abstract]      
Income from communication services $ 14,392 $ 11,958 $ 4,956
Rental and services income 10,671 8,537 5,197
Sale of communication equipment 4,955 4,006 1,844
Sale of trading properties and developments 1,818 1,454 191
Revenue from hotel operations and tourism services 1,040 766 557
Other revenues 212 283 171
Total Group's revenues $ 33,088 $ 27,004 $ 12,916