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Income Tax - Summary of deferred tax assets and deferred tax liabilities (Detail) - ARS ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Deferred Tax Assets And Liabilities [line items]      
Deferred Tax Assets $ 3,044,491 $ 9,412,722  
Deferred Tax Liabilities 10,429,424 10,116,786  
Net deferred tax liabilities 7,384,933 704,064 $ 4,903,673
Inflation adjustment on deferred income tax [member]      
Deferred Tax Assets And Liabilities [line items]      
Deferred Tax Assets 112,133 7,404,561  
Allowances for contingencies [member]      
Deferred Tax Assets And Liabilities [line items]      
Deferred Tax Assets 365,174 594,761  
Provisions and employee benefit [member]      
Deferred Tax Assets And Liabilities [line items]      
Deferred Tax Assets 591,113 529,485  
Lease [member]      
Deferred Tax Assets And Liabilities [line items]      
Deferred Tax Assets 106,147 82,349  
Loans and other financing [member]      
Deferred Tax Assets And Liabilities [line items]      
Deferred Tax Assets 1,708,157 393,633  
Other [member]      
Deferred Tax Assets And Liabilities [line items]      
Deferred Tax Assets 161,767 407,933  
Property, plant and equipment [member]      
Deferred Tax Assets And Liabilities [line items]      
Deferred Tax Liabilities 6,851,232 7,104,570  
Intangible asset [member]      
Deferred Tax Assets And Liabilities [line items]      
Deferred Tax Liabilities 1,377,624 1,320,956  
Investments in other companies [member]      
Deferred Tax Assets And Liabilities [line items]      
Deferred Tax Liabilities 1,283,901 889,262  
Profit or loss for forward sale [member]      
Deferred Tax Assets And Liabilities [line items]      
Deferred Tax Liabilities 511,718 317,513  
Other [member]      
Deferred Tax Assets And Liabilities [line items]      
Deferred Tax Liabilities $ 404,949 $ 484,485