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Property, Plant and Equipment - Summary of Provisions for Impairment of Property, Plant and Equipment (Detail) - ARS ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of detailed information about property, plant and equipment [line items]      
Amount at beginning of year $ 1,069,011 $ 699,087  
Depreciation (171,452) (145,894) $ (87,569)
Amount at end of year 1,379,527 1,069,011 699,087
Provision for Impairment of Property Plant and Equipment [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Amount at beginning of year 81,329 37,061 26,535
Increase charged to profit or loss 57,920 41,429 36,937
Decreases charged to profit or loss (66,170)   (39,837)
Applications to utilization (1,250)    
Depreciation (42,861) (17,435) (10,208)
Translation differences 36,386 20,274 23,634
Amount at end of year $ 65,354 $ 81,329 $ 37,061