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REGULATORY FRAMEWORK, General Framework of the Natural Gas Transportation Segment (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
ARS ($)
Apr. 01, 2019
Oct. 02, 2018
Sep. 04, 2018
Apr. 01, 2018
Dec. 01, 2017
Apr. 02, 2017
Mar. 30, 2017
Apr. 02, 2016
Jun. 05, 2015
Aug. 01, 2014
Jun. 01, 2014
Apr. 01, 2014
General aspects [Abstract]                          
Original license period 35 years                        
License period, renewal 10 years                        
License period, after renewal 45 years                        
Tariff situation [Abstract]                          
Natural gas transportation tariffs period, condition one semi-annually                        
Natural gas transportation tariffs period, condition two 5 years                        
Conversion rate of exchange for tariffs 1                        
Number of years for negotiations under transitional agreement 17 years                        
Transitional Agreement [Abstract]                          
Percentage of increase in tariff     19.70% 30.00%             20.00% 14.00% 8.00%
Percentage of increase in tariff on service for natural gas transportation           81.10% 64.20% 214.20%   44.30%      
Percentage of increase in tariff on access and use           29.70%   37.00%   73.20%      
Percentage of tariff increase on public service of Natural Gas Transportation and CAU         50.00%       200.10%        
Investment plan period 5 years                        
Five Year Plan investment amount $ 6,786,543                        
Subsequent Event [Member]                          
Transitional Agreement [Abstract]                          
Percentage of increase in tariff   26.00%