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Balances and Transactions with Related Parties - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
CHNC [member]      
Disclosure of transactions between related parties [line items]      
Purchase of gas and crude oil $ 453 $ 442 $ 424
Net balance payable $ 38 $ 46 $ 29
Proportion of explotation concession of Loma Campana 50.00%    
CDNC and CHNC [member]      
Disclosure of transactions between related parties [line items]      
Proportion of ownership interest 100.00%