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Supplemental Information on Oil And Gas Producing Activities (Unaudited) - Summary of Standardized Measure of Discounted Future Net Cash Flows (Detail) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Argentina [member]      
Disclosure of discounted future net cash flow [line items]      
Future cash inflows $ 46,028 $ 41,735 $ 48,580
Future production costs (18,294) (18,683) (22,076)
Future development costs (9,090) (11,136) (10,936)
Future income tax expenses (7,594) (3,396) (3,808)
10% annual discount for estimated timing of cash flows (4,787) (4,013) (4,658)
Total standardized measure of discounted future net cash flows 6,263 4,507 7,102
Worldwide [member]      
Disclosure of discounted future net cash flow [line items]      
Future cash inflows 46,028 41,735 48,580
Future production costs (18,294) (18,683) (22,076)
Future development costs (9,090) (11,136) (10,936)
Future income tax expenses (7,594) (3,396) (3,808)
10% annual discount for estimated timing of cash flows (4,787) (4,013) (4,658)
Total standardized measure of discounted future net cash flows $ 6,263 $ 4,507 $ 7,102