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Provisions - Summary of Changes in Group's Provisions (Parenthetical) (Detail) - ARS ($)
$ in Millions
 9 Months Ended 12 Months Ended
Dec. 31, 2019
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of provisions [line items]        
Tax claims reclassified to tax charges $ 10,572      
Hydrocarbon Wells Abandonmnet Cost [member]        
Disclosure of provisions [line items]        
Abandonment of hydrocarbon wells cost   $ 3,349 $ (13,918) $ 1,172
Hydrocarbon Wells Abandonmnet Cost [member] | Extended Moratorium [Member]        
Disclosure of provisions [line items]        
Tax claims reclassified to tax charges   2,953    
Recovery of Liabilities of Dispute relating to tax Deduction   $ 3,645