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REGULATORY FRAMEWORK, General Framework of the Natural Gas Transportation Segment (Details) $ in Thousands | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2018 ARS ($) | Apr. 01, 2019 | Oct. 02, 2018 | Sep. 04, 2018 | Apr. 01, 2018 | Dec. 01, 2017 | Apr. 02, 2017 | Mar. 30, 2017 | Apr. 02, 2016 | Jun. 05, 2015 | Aug. 01, 2014 | Jun. 01, 2014 | Apr. 01, 2014
General aspects [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Original license period | 35 years |  |  |  |  |  |  |  |  |  |  |  |
License period, renewal | 10 years |  |  |  |  |  |  |  |  |  |  |  |
License period, after renewal | 45 years |  |  |  |  |  |  |  |  |  |  |  |
Tariff situation [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Natural gas transportation tariffs period, condition one | semi-annually |  |  |  |  |  |  |  |  |  |  |  |
Natural gas transportation tariffs period, condition two | 5 years |  |  |  |  |  |  |  |  |  |  |  |
Conversion rate of exchange for tariffs | 1 |  |  |  |  |  |  |  |  |  |  |  |
Number of years for negotiations under transitional agreement | 17 years |  |  |  |  |  |  |  |  |  |  |  |
Transitional Agreement [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of increase in tariff |  |  | 19.70% | 30.00% |  |  |  |  |  |  | 20.00% | 14.00% | 8.00%
Percentage of increase in tariff on service for natural gas transportation |  |  |  |  |  | 81.10% | 64.20% | 214.20% |  | 44.30% |  |  |
Percentage of increase in tariff on access and use |  |  |  |  |  | 29.70% |  | 37.00% |  | 73.20% |  |  |
Percentage of tariff increase on public service of Natural Gas Transportation and CAU |  |  |  |  | 50.00% |  |  |  | 200.10% |  |  |  |
Investment plan period | 5 years |  |  |  |  |  |  |  |  |  |  |  |
Five Year Plan investment amount | $ 6,786,543 |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Transitional Agreement [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of increase in tariff |  | 26.00% |  |  |  |  |  |  |  |  |  |  |

X
- Definition The amount of investment property acquired pursuant to the Five Year Plan. + References No definition available. + Details
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- Definition Refers to the Argentine peso to U.S. dollar conversion rate of exchange for tariffs. + References No definition available. + Details
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- Definition Refers to the natural gas transportation tariffs period, in condition one. + References No definition available. + Details
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