Costs - Detailed Information of Inventory Costs (Detail) - ARS ($) $ in Millions	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of details of inventory costs [Abstract]
Inventories at beginning of year	$ 21,820	$ 19,258	$ 13,001
Purchases for the year	66,075	48,760	33,886
Production costs	147,423	127,075	85,550
Translation effect	3,877	4,031	6,358
Reclassifications and other movements	(92)
Inventories at end of year	(27,291)	(21,820)	(19,258)
Total	$ 211,812	$ 177,304	$ 119,537

The amount of costs relating to expenses directly or indirectly attributed to the goods or services sold, which may include, but are not limited to, costs previously included in the measurement of inventory that has now been sold, unallocated production overheads and abnormal amounts of production costs of inventories.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_103&doctype=Standard
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