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OPERATING EXPENSES (Details) - ARS ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
OPERATING EXPENSES      
Operating expenses $ 221,229 $ 225,817 $ 80,518
Employee benefit expenses and severance payments      
Salaries, Social security expenses and benefits (40,275) (41,124) (16,641)
Severance indemnities (5,153) (3,497) (557)
Other employee benefits (1,103) (1,152) (747)
Employee benefit expenses and severance payments $ (46,531) $ (45,773) $ (17,945)