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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, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Revenues [Abstract] |  |  |  |  |
Revenues | $ 34,062,670 | $ 19,953,266 | [1] | $ 14,645,510 | [1],[2]
Reportable Segments [Member] | Natural Gas Transportation [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 15,462,061 | 7,456,052 |  | 4,162,220 |
Reportable Segments [Member] | Natural Gas Transportation [Member] | Firm [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 12,243,699 | 5,831,927 |  | 2,988,232 |
Reportable Segments [Member] | Natural Gas Transportation [Member] | Access and Charge [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 565,809 | 433,575 |  | 420,897 |
Reportable Segments [Member] | Natural Gas Transportation [Member] | Interruptible and Others [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 2,652,553 | 1,190,550 |  | 753,091 |
Reportable Segments [Member] | Production and Commercialization of Liquids [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 16,627,429 | 11,173,975 |  | 9,404,793 |
Reportable Segments [Member] | Production and Commercialization of Liquids [Member] | Product [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 15,515,393 | 10,255,416 |  | 8,062,864 |
Reportable Segments [Member] | Production and Commercialization of Liquids [Member] | Services [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 705,309 | 570,904 |  | 1,027,901 |
Reportable Segments [Member] | Production and Commercialization of Liquids [Member] | Government Grants [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 406,727 | 347,655 |  | 314,028 |
Reportable Segments [Member] | Other Services [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 1,810,109 | 1,199,170 |  | 956,948 |
Reportable Segments [Member] | Other Services [Member] | Conditioning and Treatment [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 735,099 | 546,758 |  | 410,644 |
Reportable Segments [Member] | Other Services [Member] | Operation and Maintenance [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 480,112 | 414,576 |  | 328,975 |
Reportable Segments [Member] | Other Services [Member] | Steam Sales [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 136,764 | 96,587 |  | 106,212 |
Reportable Segments [Member] | Other Services [Member] | Construction [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 21,321 | 138,638 |  | 100,543 |
Reportable Segments [Member] | Other Services [Member] | UT Construction [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 433,200 | 0 |  | 0 |
Reportable Segments [Member] | Other Services [Member] | Others [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 3,613 | 2,611 |  | 10,574 |
Reportable Segments [Member] | Telecommunications [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | $ 163,071 | $ 124,069 |  | $ 121,549 |
[1] | The Company has applied IFRS 15 and IFRS 9 for the first time on January 1, 2018. In accordance with the transition methods chosen, the comparative information has not been modified. See Note 4.a)
[2] | The weighted average of the number of shares considers the effect of the weighted average of the changes originated in the transactions with treasury shares made during the year.

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