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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, 2022
Dec. 31, 2021
Dec. 31, 2020
Argentina [member]      
Disclosure of discounted future net cash flow [line items]      
Future cash inflows $ 48,580 $ 50,843 $ 24,651
Future production costs (22,076) (22,509) (13,428)
Future development costs (10,936) (8,957) (7,671)
Future income tax expenses (3,808) (5,286) (160)
10% annual discount for estimated timing of cash flows (4,658) (5,036) (1,259)
Total standardized measure of discounted future net cash flows 7,102 9,055 2,133
Worldwide [member]      
Disclosure of discounted future net cash flow [line items]      
Future cash inflows 48,580 50,843 24,651
Future production costs (22,076) (22,509) (13,428)
Future development costs (10,936) (8,957) (7,671)
Future income tax expenses (3,808) (5,286) (160)
10% annual discount for estimated timing of cash flows (4,658) (5,036) (1,259)
Total standardized measure of discounted future net cash flows $ 7,102 $ 9,055 $ 2,133