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ASSOCIATES AND JOINT ARRANGEMENTS (Details) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Oct. 13, 2016 ARS ($) | Dec. 17, 2013 USD ($) | Dec. 31, 2018 ARS ($) | Dec. 31, 2017 ARS ($) | [1] | Dec. 31, 2016 ARS ($) | [1]
Information about associates and arrangements [Abstract] |  |  |  |  |
Purchase of fixed assets |  |  | $ 8,123,664 | $ 1,941,265 | $ 1,017,590
UT [Member] |  |  |  |  |
Information about associates and arrangements [Abstract] |  |  |  |  |
Maximum execution period of the UT works |  |  | 365 days |  |
Guarantee period from the provisional reception of the UT Works |  |  | 18 months |  |
Link [Member] |  |  |  |  |
Information about associates and arrangements [Abstract] |  |  |  |  |
Percentage of ownership |  |  | 49.00% |  |
Link [Member] | Dinarel S.A. [Member] |  |  |  |  |
Information about associates and arrangements [Abstract] |  |  |  |  |
Percentage of ownership |  |  | 51.00% |  |
TGU [Member] |  |  |  |  |
Information about associates and arrangements [Abstract] |  |  |  |  |
Percentage of ownership |  |  | 49.00% |  |
TGU [Member] | Pampa Energia [Member] |  |  |  |  |
Information about associates and arrangements [Abstract] |  |  |  |  |
Percentage of ownership |  |  | 51.00% |  |
EGS [Member] |  |  |  |  |
Information about associates and arrangements [Abstract] |  |  |  |  |
Percentage of ownership |  |  | 49.00% |  |
Purchase of fixed assets |  | $ 350,000 |  |  |
Distribution of dividend in kind | $ 8,679 |  |  |  |
EGS [Member] | TGU [Member] |  |  |  |  |
Information about associates and arrangements [Abstract] |  |  |  |  |
Percentage of ownership |  |  | 51.00% |  |
[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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