Property, plant and equipment - Summary of Capitalised Exploration Drilling Costs (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Disclosure Of Detailed Information About Exploration And Evaluation Assets [Line Items] | |||
| At January 1 | $ 3,136 | $ 2,911 | $ 3,015 |
| Additions pending determination of proved reserves | 1,104 | 1,967 | 1,298 |
| Amounts charged to expense | (1,622) | (868) | (881) |
| Reclassifications to productive wells on determination of proved reserves | (333) | (874) | (531) |
| Other movements [A] | (231) | 0 | 10 |
| At December 31 | $ 2,054 | $ 3,136 | $ 2,911 |