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Investments in Associates and Joint Ventures - Summary of Investments in Associates and Joint Ventures at an Aggregate Level (Detail) - ARS ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Investments In Associates And Joint Ventures [abstract]
Amount of investments in associates	$ 2,374	$ 911	$ 1,478
Amount of investments in joint ventures	30,324	5,146	4,022
Provision for impairment of investments in associates and joint ventures	(12)	(12)	(12)
Total investments	$ 32,686	$ 6,045	$ 5,488	$ 4,371

X

- Definition

The amount of investments in associates in an entity's separate financial statements. [Refer: Associates [member]]

+ References

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- Definition

The amount of investments in joint ventures in an entity's separate financial statements. [Refer: Joint ventures [member]]

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- Definition

The amount of investments in subsidiaries, joint ventures and associates in an entity's separate financial statements. [Refer: Associates [member]; Joint ventures [member]; Subsidiaries [member]; Investments in subsidiaries]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Investments In Associates And Joint Ventures [abstract]

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Provision for impairment of investments in associates and joint ventures.

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