FINANCIAL RISK MANAGEMENT, Commodity Price Risk (Details) - Commodity Price Risk [Member] $ in Thousands	12 Months Ended
Dec. 31, 2017 ARS ($) $ / Ton	Dec. 31, 2016 ARS ($) $ / Ton	Dec. 31, 2015 ARS ($) $ / Ton
Commodity Rate Risk [Abstract]
Increase (decrease) in international price of LPG and natural gasoline \| $ / Ton	50	50	50
Liquids Production and Commercialization [Member]
Commodity Rate Risk [Abstract]
Decrease in net comprehensive income due to commodity risk \| $	$ 304,254	$ 233,323	$ 157,051

Refers to decrease in the international price of LPG and natural gasoline per unit.

No definition available.

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