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Supplemental Information on Oil And Gas Producing Activities (Unaudited) - Costs Incurred for Oil and Gas Producing Activities (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Argentina [member]      
Disclosure of information about consolidated entities [Line Items]      
Acquisition of unproved properties $ 0 $ 0  
Exploration costs 198 156 $ 80
Development costs 3,884 4,370 3,138
Total costs incurred 4,082 4,526 3,218
Other foreign [Member]      
Disclosure of information about consolidated entities [Line Items]      
Acquisition of unproved properties     0
Exploration costs 1 1 2
Development costs     0
Total costs incurred 1 1 2
Worldwide [member]      
Disclosure of information about consolidated entities [Line Items]      
Acquisition of unproved properties 0 0  
Exploration costs 199 157 82
Development costs 3,884 4,370 3,138
Total costs incurred $ 4,083 $ 4,527 $ 3,220