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ASSOCIATES AND JOINT ARRANGEMENTS (Details) $ in Thousands |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Oct. 13, 2016 ARS ($) | Dec. 17, 2013 USD ($) | Dec. 31, 2017 ARS ($) | Dec. 31, 2016 ARS ($) | Dec. 31, 2015 ARS ($) | Aug. 08, 2017 ARS ($)
Information about associates and arrangements [Abstract] |  |  |  |  |  |
Purchase of fixed assets |  |  | $ 1,308,560 | $ 596,109 | $ 401,980 |
UT [Member] |  |  |  |  |  |
Information about associates and arrangements [Abstract] |  |  |  |  |  |
Revenues to be generated by UT |  |  | $ 946,000 |  |  |
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] | Petrobras Argentina [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 | $ 4,673 |  |  |  |  |
EGS [Member] | TGU [Member] |  |  |  |  |  |
Information about associates and arrangements [Abstract] |  |  |  |  |  |
Percentage of ownership |  |  | 51.00% |  |  |
CTG [Member] |  |  |  |  |  |
Information about associates and arrangements [Abstract] |  |  |  |  |  |
Cash payments for acquisition |  |  |  |  |  | $ 100

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