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Costs - Detailed Information of Inventory Costs (Detail) - ARS ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of details of inventory costs [abstract]      
Inventories at beginning of year $ 80,479 $ 53,324 $ 27,149
Purchases 170,616 190,601 124,279
Production costs [1] 442,264 378,281 234,340
Translation effect 32,427 33,385 26,514
Inventories incorporated by business combination [2]     445
Adjustment for inflation [3] 563 496 167
Inventories at end of the year (100,137) (80,479) (53,324)
Total $ 626,212 $ 575,608 $ 359,570
[1] See Note 25.
[2] See Note 3.
[3] Corresponds to adjustment for inflation of inventories’ opening balances of subsidiaries with the Peso as functional currency, which was charged to other comprehensive income.