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DETAIL OF SIGNIFICANT STATEMENT OF FINANCIAL POSITION AND STATEMENT OF COMPREHENSIVE INCOME CAPTIONS, Trade Receivables (Details) - ARS ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Current [Abstract]    
Ordinary $ 2,008,861 $ 1,128,454
Related parties 24,679 117,688
Allowance for doubtful accounts 0 (19,703)
Total 2,033,540 1,226,439
Non-current [Abstract]    
Ordinary 3,055 8,122
Related parties 0  
Allowance for doubtful accounts 0 0
Total 3,055 8,122
Allowance for doubtful accounts [Abstract]    
Balance at the beginning of the period 19,703 [1] 1,389
Additions 0 19,703 [2]
Applications 0 (1,389)
Reversals (19,703) [2] 0
Balance at the end of period [1] 0 19,703
Natural Gas Transportation [Member]    
Current [Abstract]    
Ordinary 890,370 405,388
Related parties 9,687 5,544
Non-current [Abstract]    
Ordinary 0 0
Related parties 0 0
Production and Commercialization of Liquids [Member]    
Current [Abstract]    
Ordinary 909,065 550,596
Non-current [Abstract]    
Ordinary 0 0
Other Services [Member]    
Current [Abstract]    
Ordinary 209,426 172,470
Related parties 14,992 112,144
Non-current [Abstract]    
Ordinary 3,055 8,122
Related parties 0 0
Argentine Pesos [Member]    
Current [Abstract]    
Total 960,693 568,500
Non-current [Abstract]    
Total 0 0
U.S. Dollars [Member]    
Current [Abstract]    
Total 1,072,847 657,939
Non-current [Abstract]    
Total $ 3,055 $ 8,122
[1] Corresponds to the best estimate made by TGS according to what is mentioned in note 5.b.
[2] The total amount is recorded in Selling Expenses