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FINANCIAL RISK MANAGEMENT, Commodity Price Risk (Details) $ in Thousands, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 ARS ($) Ton $ / Ton | Dec. 31, 2017 ARS ($) $ / Ton | Dec. 31, 2016 ARS ($) $ / Ton | Dec. 31, 2018 USD ($)
Monthly Short Tons [Abstract] |  |  |  |  |
Derivative financial instruments | $ | $ 218,272 | $ 0 | [1] |  |
Commodity Price Risk [Member] |  |  |  |  |
Commodity Rate Risk [Abstract] |  |  |  |  |
Percentage of sales of propane and butane in domestic market | 59.00% |  |  |  |
Increase (decrease) in international price of LPG and natural gasoline | $ / Ton | 50 | 50 |  | 50 |
Monthly Short Tons [Abstract] |  |  |  |  |
Premium paid | $ |  |  |  |  | $ 3
Derivative financial instruments | $ | $ 218,272 |  |  |  |
Commodity Price Risk [Member] | Propane [Member] | October 2018 - April 2019 [Member] |  |  |  |  |
Monthly Short Tons [Abstract] |  |  |  |  |
Monthly short tons | 6,045 |  |  |  |
Commodity Price Risk [Member] | Propane [Member] | May 2019 - September 2019 [Member] |  |  |  |  |
Monthly Short Tons [Abstract] |  |  |  |  |
Monthly short tons | 0 |  |  |  |
Commodity Price Risk [Member] | Propane [Member] | October 2019 [Member] |  |  |  |  |
Monthly Short Tons [Abstract] |  |  |  |  |
Monthly short tons | 9,068 |  |  |  |
Commodity Price Risk [Member] | Propane [Member] | November 2019 - April 2020 [Member] |  |  |  |  |
Monthly Short Tons [Abstract] |  |  |  |  |
Monthly short tons | 13,098 |  |  |  |
Commodity Price Risk [Member] | Butane [Member] | October 2018 - April 2019 [Member] |  |  |  |  |
Monthly Short Tons [Abstract] |  |  |  |  |
Monthly short tons | 4,506 |  |  |  |
Commodity Price Risk [Member] | Butane [Member] | May 2019 - September 2019 [Member] |  |  |  |  |
Monthly Short Tons [Abstract] |  |  |  |  |
Monthly short tons | 0 |  |  |  |
Commodity Price Risk [Member] | Butane [Member] | October 2019 [Member] |  |  |  |  |
Monthly Short Tons [Abstract] |  |  |  |  |
Monthly short tons | 7,010 |  |  |  |
Commodity Price Risk [Member] | Butane [Member] | November 2019 - April 2020 [Member] |  |  |  |  |
Monthly Short Tons [Abstract] |  |  |  |  |
Monthly short tons | 10,014 |  |  |  |
Commodity Price Risk [Member] | Natural Gasoline [Member] | October 2018 - April 2019 [Member] |  |  |  |  |
Monthly Short Tons [Abstract] |  |  |  |  |
Monthly short tons | 2,700 |  |  |  |
Commodity Price Risk [Member] | Natural Gasoline [Member] | May 2019 - September 2019 [Member] |  |  |  |  |
Monthly Short Tons [Abstract] |  |  |  |  |
Monthly short tons | 4,100 |  |  |  |
Commodity Price Risk [Member] | Natural Gasoline [Member] | October 2019 [Member] |  |  |  |  |
Monthly Short Tons [Abstract] |  |  |  |  |
Monthly short tons | 4,200 |  |  |  |
Commodity Price Risk [Member] | Natural Gasoline [Member] | November 2019 - April 2020 [Member] |  |  |  |  |
Monthly Short Tons [Abstract] |  |  |  |  |
Monthly short tons | 6,000 |  |  |  |
Commodity Price Risk [Member] | Liquids Production and Commercialization [Member] |  |  |  |  |
Commodity Rate Risk [Abstract] |  |  |  |  |
Decrease in net comprehensive income due to commodity risk | $ | $ 552,004 | $ 449,231 |  | $ 233,323 |
[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)

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