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SIGNIFICANT ACCOUNTING POLICIES, Property, Plant and Equipment (Details)
$ in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2020
ARS ($)
Dec. 31, 2019
ARS ($)
Dec. 31, 2020
USD ($)
Property, plant and equipment [Abstract]      
Property, plant and equipment from privatization of GdE $ 98,873,425 $ 101,496,521  
Financial expense capitalized $ 0 $ 607,452  
GdE [member]      
Property, plant and equipment [Abstract]      
Percentage of common stock considered for assets value 70.00%   70.00%
Value of assets, price paid on common stock from privatization of GdE     $ 561.2
Value of common stock from privatization of GdE     801.7
Debt assumed from privatization of GdE     395.0
Property, plant and equipment from privatization of GdE     $ 1,196.7