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Provisions - Summary of Changes in Group's Provisions (Parenthetical) (Detail) - ARS ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of provisions [line items]
Liabilities associated to assets held for disposal		$ 4,193
Other liabilities of contractual claims		(2,098)	$ (950)
Reclassifications of Other liabilities		2,932	2,932
Tax claims reclassified to tax charges			(75)
Hydrocarbon Wells Abandonmnet Cost [member]
Disclosure of provisions [line items]
Abandonment of hydrocarbon wells cost	$ (11,710)	(4,913)	$ 2,243
Liabilities associated to assets held for disposal	$ (3,133)	$ (96)

X

- Definition

The increase (decrease) in property, plant and equipment resulting from transfers and changes that the entity does not separately disclose in the same statement or note. [Refer: Property, plant and equipment]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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X

- Definition

The amount of liabilities included in disposal groups classified as held for sale. [Refer: Liabilities; Disposal groups classified as held for sale [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The amount of liabilities that are subordinate to other liabilities with respect to claims.

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- Definition

Taxes payable due in tax claims.

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