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Financial Instruments by Category - Additional Information (Detail) - ARS ($)
$ in Millions
Aug. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of detailed information about financial instruments [line items]        
Exchange of outstanding principal amount of bonds, percentage 99.01%      
Gain on fair value changes of bonds $ 1,330      
Level 3 [member] | Estimated Fair Value of Loans [member]        
Disclosure of detailed information about financial instruments [line items]        
Other remaining financial loans   $ 560,267 $ 476,750 $ 293,972