Property, plant and equipment - Narrative (Details) $ in Millions |
Dec. 31, 2023
USD ($)
project
|
Dec. 31, 2022
USD ($)
|
|---|---|---|
| Property, plant and equipment [abstract] | ||
| Carrying amount of assets under construction | $ 28,135 | $ 27,277 |
| Carrying amount of rights and concessions in respect of proved and unproved properties | 6,097 | $ 7,662 |
| Contractual commitments for purchase and lease of property, plant and equipment | 12,419 | |
| Exploration drilling costs capitalised | $ 273 | |
| Number of projects where drilling activities were underway | project | 5 | |
| Projects awaiting development concepts | $ 1,345 | |
| Number of projects awaiting further development concepts | project | 18 |