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Basis of Preparation of the Consolidated Financial Statements - Summary of Information Related to Construction Contracts (Detail) - ARS ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure Of Revenues [Abstract]
Revenues for the year	$ 710	$ 778	$ 455
Costs incurred plus accumulated recognized profits	1,398	1,236	577
Advances received	61
Retentions	$ 0	$ 0	$ 0

X

- Definition

The amount of advances received by the entity before the related work is performed on construction contracts.

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The aggregate amount of costs incurred and recognised profits, less recognised losses, to date on construction contracts in progress.

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The amount of progress billings on construction contracts that are not paid until the conditions specified in the contract for the payment of such amounts have been satisfied or until defects have been rectified. [Refer: Progress billings]

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The amount of revenue arising from construction contracts. Construction contracts are contracts specifically negotiated for the construction of an asset or a combination of assets that are closely interrelated or interdependent in terms of their design, technology and function or their ultimate purpose or use. [Refer: Revenue]

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Disclosure Of Revenues.

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