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Income Tax - Schedule of changes in deferred tax liabilities (Detail) - ARS ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Deferred tax liabilities [line items]      
Net deferred tax liabilities at beginning of year $ 704,064 $ 4,903,673  
(Loss)/ Profit for deferred taxed recognized in the statement of income (6,680,869) 4,252,350  
Other tax effects   (52,741) $ (90,972)
Net deferred tax liabilities at fiscal year end $ 7,384,933 $ 704,064 $ 4,903,673