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REGULATORY FRAMEWORK, General Framework for Non-Regulated Segments (Details)
 12 Months Ended
Oct. 19, 2020
ARS ($)
Dec. 01, 2011
$ / m³
Nov. 30, 2011
$ / m³
Dec. 31, 2020
ARS ($)
$ / bbl
$ / m³
Dec. 31, 2019
ARS ($)
Dec. 31, 2018
ARS ($)
Dec. 31, 2017
ARS ($)
Dec. 23, 2019
Sep. 03, 2018
USD ($)
Domestic market [Abstract]                  
Period of maximum reference prices for commercialization of liquefied petroleum gas unchanged       180 days          
Increase in price of liquefied petroleum gas $ 10,885,000                
Increase in price of propane gas per ton             $ 1,267,000    
Increase in price of propane gas per ton depending on customer             2,832,000    
Subsidies received       $ 327,865,000 $ 275,615,000 $ 851,800,000      
Subsidies receivable from government       $ 302,777,000 195,810,000        
Foreign market [Abstract]                  
Capped amount of each dollar of the tax base or the official FOB price                 $ 4
Rate applicable to hydrocarbons               8.00%  
Barrel price, condition one | $ / bbl       45          
Barrel price, condition two | $ / bbl       60          
Tax rate for barrel price below US$45       0.00%          
Tax rate for barrel price equal or higher than US$60       8.00%          
Tariff charge paid (per cubic meter) | $ / m³       0.0492          
Tariff charge (per cubic meter) | $ / m³   0.405 0.0492            
Bottom of Range [Member]                  
Foreign market [Abstract]                  
Applicable tax rate on export of oil and gas products       0.00%          
Top of Range [Member]                  
Foreign market [Abstract]                  
Applicable tax rate on export of oil and gas products       8.00%          
Production and Commercialization of Liquids [Member]                  
Domestic market [Abstract]                  
Subsidies received       $ 150,196,000 $ 637,810,000        
Butane [Member]                  
Foreign market [Abstract]                  
Export duty percentage                 12.00%
Propane [Member]                  
Domestic market [Abstract]                  
Increase in price of propane gas per ton             1,941,200    
Increase in price of propane gas per ton depending on customer             $ 3,964,000    
Foreign market [Abstract]                  
Export duty percentage                 12.00%
Natural Gasoline [Member]                  
Foreign market [Abstract]                  
Export duty percentage                 12.00%