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SUPPLEMENTAL CASH FLOW INFORMATION (Details) - ARS ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Non-cash Investing and Financing Activities [Abstract]      
Unpaid acquisition of PPE $ 304,531 $ 1,812,174 $ 644,507
Principal payment of financial lease [1] 190,969 203,173 213,551
Capitalization of finance costs $ 0 $ 607,452 $ 0
[1] Cancelled through compensation with trade receivables with the creditor. See Note 13.