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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
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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

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