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Right-of-use Assets -Summary of Evolution of the Group's Right-of-use Assets (Parenthetical) (Detail) - ARS ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of quantitative information about right-of-use assets [line items]      
Depreciation of right-of-use assets $ 19,200 $ 17,873 $ 10,509
Capitalization of amortization of right-of-use assets in property, plant and equipment $ 4,166 3,789 $ 2,021
Cost [member] | Machinery and equipment [Member]      
Disclosure of quantitative information about right-of-use assets [line items]      
Cost decrease due to liquefaction barge with exmar   (21,103)  
Accumulated depreciation [member] | Machinery and equipment [Member]      
Disclosure of quantitative information about right-of-use assets [line items]      
Cost decrease due to liquefaction barge with exmar   $ (2,110)