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34. Basic and diluted earnings per share (Details) - ARS ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Basic And Diluted Earnings Per Share Details Abstract
Profit (Loss) for the period attributable to the owners of the Company	$ 4,297,466	$ 5,080,635	$ 240,771
Weighted average number of common shares outstanding	890,492,000	898,280,000	897,043,000
Basic and diluted profit (loss) earnings per share - in pesos	$ 4.83	$ 5.66	$ 0.27

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The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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The amount of earnings per share when the basic and diluted measurements are equal. [Refer: Basic earnings (loss) per share; Diluted earnings (loss) per share]

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The total of income less expenses from continuing and discontinued operations, excluding the components of other comprehensive income. [Refer: Other comprehensive income]

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