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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

X

- Definition

The fair value, at acquisition date, of cash transferred as consideration in a business combination. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2017-01-01
-Paragraph B64
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X

- Definition

The amount of dividends received.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2017-01-01
-Paragraph B12
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_B12_a&doctype=Appendix&seq=2
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X

- Definition

The proportion of ownership interest in an associate attributable to the entity. [Refer: Associates [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2017-01-01
-Paragraph 17
-Subparagraph b
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2017-03-01&anchor=para_17_b_iii&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2017-01-01
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2017-01-01
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-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_21_a_iv&doctype=Standard
-URIDate 2017-03-09

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X

- Definition

The cash outflow for the purchases of property, plant and equipment, classified as investing activities. [Refer: Property, plant and equipment]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 7
-IssueDate 2017-01-01
-Paragraph 16
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_16_a&doctype=Standard
-URIDate 2017-03-09

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- Definition

Refers to guarantee period from the provisional reception to validate the contract.

+ References

No definition available.

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- References

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X

- Definition

Refers to maximum execution period for work contract counted from the signing of the certificate of commencement of the works.

+ References

No definition available.

+ Details

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X

- Definition

The amount of revenue to be earned through a joint arrangement.

+ References

No definition available.

+ Details

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