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Inventories - Summary of Inventories (Detail) - ARS ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of inventories [line items]        
Inventories $ 153,927 $ 100,137 $ 80,479 $ 53,324
Refined products [member]        
Disclosure of inventories [line items]        
Inventories 105,123 59,971 50,563  
Crude oil and natural gas [member]        
Disclosure of inventories [line items]        
Inventories 37,521 33,066 24,756  
Products in process [member]        
Disclosure of inventories [line items]        
Inventories 3,500 1,966 2,259  
Raw materials, packaging materials and others [member]        
Disclosure of inventories [line items]        
Inventories $ 7,783 $ 5,134 $ 2,901