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Property, Plant and Equipment - Summary of Cost for Exploratory Wells (Detail)
$ in Millions
 12 Months Ended
Dec. 31, 2021
ARS ($)
Well
Project
Dec. 31, 2020
ARS ($)
Dec. 31, 2019
ARS ($)
Disclosure of Property, Plant and Equipment Cost for Exploratory Wells under Assessment [line items]      
Amount $ 132,832 $ 138,753 $ 91,533
Exploration wells [member] | From 1 to 5 years [member]      
Disclosure of Property, Plant and Equipment Cost for Exploratory Wells under Assessment [line items]      
Amount $ 1,399    
Number of projects | Project 1    
Number of Wells | Well 1