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DETAIL OF SIGNIFICANT STATEMENT OF FINANCIAL POSITION AND STATEMENT OF COMPREHENSIVE INCOME CAPTIONS, Disaggregation of Revenues by Business Segment (Details) - ARS ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Revenues [Abstract]      
Revenues $ 55,871,438 $ 66,111,903 $ 71,336,882
Natural Gas Transportation [Member]      
Revenues [Abstract]      
Revenues   30,795,577  
Reportable Segments [Member] | Natural Gas Transportation [Member]      
Revenues [Abstract]      
Revenues 23,501,610 30,795,577 32,381,937
Reportable Segments [Member] | Natural Gas Transportation [Member] | Firm [Member]      
Revenues [Abstract]      
Revenues 19,086,235 25,214,892 25,641,775
Reportable Segments [Member] | Natural Gas Transportation [Member] | Access and Charge [Member]      
Revenues [Abstract]      
Revenues 839,868 1,137,755 1,184,965
Reportable Segments [Member] | Natural Gas Transportation [Member] | Interruptible and Others [Member]      
Revenues [Abstract]      
Revenues 3,575,507 4,442,930 5,555,197
Reportable Segments [Member] | Production and Commercialization of Liquids [Member]      
Revenues [Abstract]      
Revenues 27,596,696 31,500,457 34,822,547
Reportable Segments [Member] | Production and Commercialization of Liquids [Member] | Product [Member]      
Revenues [Abstract]      
Revenues 25,602,861 29,554,650 32,493,630
Reportable Segments [Member] | Production and Commercialization of Liquids [Member] | Services [Member]      
Revenues [Abstract]      
Revenues 1,665,970 1,670,192 1,477,117
Reportable Segments [Member] | Production and Commercialization of Liquids [Member] | Government Grants [Member]      
Revenues [Abstract]      
Revenues 327,865 275,615 851,800
Reportable Segments [Member] | Other Services [Member]      
Revenues [Abstract]      
Revenues 4,364,503 3,439,787 3,790,881
Reportable Segments [Member] | Other Services [Member] | Conditioning and Treatment [Member]      
Revenues [Abstract]      
Revenues 2,036,984 1,733,165 1,539,505
Reportable Segments [Member] | Other Services [Member] | Operation and Maintenance [Member]      
Revenues [Abstract]      
Revenues 166,972 887,181 1,005,491
Reportable Segments [Member] | Other Services [Member] | Steam Sales [Member]      
Revenues [Abstract]      
Revenues 182,124 315,254 286,422
Reportable Segments [Member] | Other Services [Member] | Construction [Member]      
Revenues [Abstract]      
Revenues 25,812 16,199 44,653
Reportable Segments [Member] | Other Services [Member] | UT Construction [Member]      
Revenues [Abstract]      
Revenues 70,481 255,517 907,244
Reportable Segments [Member] | Other Services [Member] | Transportation and conditioning of Natural Gas in Vaca Muerta [Member]      
Revenues [Abstract]      
Revenues 1,793,855 225,619 0
Reportable Segments [Member] | Other Services [Member] | Others [Member]      
Revenues [Abstract]      
Revenues 88,275 6,852 7,566
Reportable Segments [Member] | Telecommunications [Member]      
Revenues [Abstract]      
Revenues $ 408,629 $ 376,082 $ 341,517