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LEGAL CLAIMS AND OTHER MATTERS (Details)
$ in Millions, $ in Millions
 12 Months Ended 24 Months Ended
Jun. 14, 2018
USD ($)
May 28, 2018
USD ($)
Mar. 15, 2017
USD ($)
May 08, 2015
Contract
Oct. 09, 2008
Dec. 31, 2018
USD ($)
Dec. 31, 2017
ARS ($)
Dec. 31, 2016
ARS ($)
Jun. 30, 2011
ARS ($)
Dec. 31, 2018
ARS ($)
Mar. 31, 2017
ARS ($)
May 24, 2013
ARS ($)
LEGAL CLAIMS AND OTHER MATTERS [Abstract]                        
Payment for claims to provincial agencies             $ 148.5 $ 27.6        
Provisions for contingency             279.6     $ 308.4    
Validity period of precautionary measure           6 months            
Increase in tariff percentage         20.00%              
Receivables from income taxes and value added tax               $ 105.0       $ 69.4
Claim amount for the omission as agent of withholding and collection of turnover tax                 $ 4.9      
Canceled partial debt claim amount                     $ 2.9  
Number of natural gas contracts executed | Contract       3                
Claim amount due to lower allocation of products obtained           $ 163.0            
Adjusted of claim     $ 306.3                  
Nominal damages     134.0                  
Interest on nominal damages     $ 172.3                  
Damages to claimants   $ 19.0                    
Payment for damages $ 21.3                      
Provision for other matters             $ 9.6     $ 59.7