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OPERATING EXPENSES (Details) - ARS ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
OPERATING EXPENSES      
Operating expenses $ 146,789 $ 52,340 $ 48,089
Employee benefit expenses and severance payments      
Salaries, Social security expenses and benefits (27,026) (10,817) (10,007)
Severance indemnities and termination benefits (2,273) (362) (186)
Other employee benefits (749) (486) (410)
Employee benefit expenses and severance payments $ (30,048) $ (11,665) $ (10,603)