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DETAIL OF SIGNIFICANT STATEMENT OF FINANCIAL POSITION AND STATEMENT OF COMPREHENSIVE INCOME CAPTIONS, Disaggregarion of Revenues by Geographical Market (Details) - ARS ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Revenues [Abstract] |  |  |  |  |
Revenues | $ 34,062,670 | $ 19,953,266 | [1] | $ 14,645,510 | [1],[2]
Over the Time [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 18,140,550 | 9,314,133 |  | 5,811,621 |
At a Point in Time [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 15,922,120 | 10,639,133 |  | 8,833,889 |
External Market [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 6,025,445 | 4,332,548 |  | 2,841,403 |
Domestic Market [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 28,037,225 | 15,620,718 |  | 11,804,107 |
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] | Over the Time [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 15,462,061 | 7,456,052 |  | 4,162,220 |
Reportable Segments [Member] | Natural Gas Transportation [Member] | At a Point in Time [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 0 | 0 |  | 0 |
Reportable Segments [Member] | Natural Gas Transportation [Member] | External Market [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 0 | 0 |  | 0 |
Reportable Segments [Member] | Natural Gas Transportation [Member] | Domestic Market [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 15,462,061 | 7,456,052 |  | 4,162,220 |
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] | Over the Time [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 705,309 | 534,842 |  | 570,904 |
Reportable Segments [Member] | Production and Commercialization of Liquids [Member] | At a Point in Time [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 15,922,120 | 10,639,133 |  | 8,833,889 |
Reportable Segments [Member] | Production and Commercialization of Liquids [Member] | External Market [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 6,025,445 | 4,332,548 |  | 2,841,403 |
Reportable Segments [Member] | Production and Commercialization of Liquids [Member] | Domestic Market [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 10,601,984 | 6,841,427 |  | 6,563,390 |
Reportable Segments [Member] | Other Services [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 1,810,109 | 1,199,170 |  | 956,948 |
Reportable Segments [Member] | Other Services [Member] | Over the Time [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 1,810,109 | 1,199,170 |  | 956,948 |
Reportable Segments [Member] | Other Services [Member] | At a Point in Time [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 0 | 0 |  | 0 |
Reportable Segments [Member] | Other Services [Member] | External Market [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 0 | 0 |  | 0 |
Reportable Segments [Member] | Other Services [Member] | Domestic Market [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 1,810,109 | 1,199,170 |  | 956,948 |
Reportable Segments [Member] | Telecommunications [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 163,071 | 124,069 |  | 121,549 |
Reportable Segments [Member] | Telecommunications [Member] | Over the Time [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 163,071 | 124,069 |  | 121,549 |
Reportable Segments [Member] | Telecommunications [Member] | At a Point in Time [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 0 | 0 |  | 0 |
Reportable Segments [Member] | Telecommunications [Member] | External Market [Member] |  |  |  |  |
Revenues [Abstract] |  |  |  |  |
Revenues | 0 | 0 |  | 0 |
Reportable Segments [Member] | Telecommunications [Member] | Domestic Market [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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