Exploration and evaluation of oil and gas reserves (Details 1) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Exploration costs recognized in the statement of income | ||||
| Geological and geophysical expenses | $ (85) | $ (183) | $ (204) | $ (274) |
| Exploration expenditures written off (includes dry wells and signature bonuses) (1) | (4) | (20) | (209) | |
| Contractual penalties on local content requirements | (12) | (14) | (5) | |
| Other exploration expenses | (2) | (1) | (10) | |
| Total expenses | (101) | (185) | (239) | (498) |
| Cash used in: | ||||
| Operating activities | 85 | 185 | 205 | 284 |
| Investment activities | 225 | 262 | 502 | 503 |
| Total cash used | $ 310 | $ 447 | $ 707 | $ 787 |