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Income Tax - Summary of Calculation of Income Tax Expense Accrued (Detail) - ARS ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Reconciliation of accounting profit multiplied by applicable tax rates [abstract]
Current income tax	$ (605)	$ (734)	$ 517
Deferred income tax	4,574	2,159	(25,154)
Income tax expense	$ 3,969	$ 1,425	$ (24,637)

The aggregate amount included in the determination of profit (loss) for the period in respect of current tax and deferred tax that relate to continuing operations. [Refer: Continuing operations [member]; Current tax expense (income); Deferred tax expense (income)]

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