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PROPERTY, PLANT AND EQUIPMENT - Revaluation (Details) - ARS ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [line items]    
Revalued amount $ 4,019,963 $ 2,485,496
Residual Value according to the cost model 3,201,516 2,570,012
Difference $ 818,447  
Difference   $ (84,516)
Land and buildings | Sales Price Per Meter    
Disclosure of detailed information about property, plant and equipment [line items]    
Reduction on the sales price per meter (as a percent) 5.00%  
Reduction of value of the Land and Buildings, net of its tax effect $ 150,700