Financial and capital risk management (Details 1) - Not Designated As Hedging Instruments [Member] - USD ($) $ in Millions |
Jun. 30, 2025 |
Dec. 31, 2024 |
|---|---|---|
| IfrsStatementLineItems [Line Items] | ||
| Derivative Financial Assets Liabilities | $ 475 | $ (557) |
| Foreign Exchange And Interest Rate Risk [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Derivative Financial Assets Liabilities | 477 | (549) |
| Commodity price risk [member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Derivative Financial Assets Liabilities | $ (2) | (7) |
| Embedded Derivatives Risk [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Derivative Financial Assets Liabilities | $ (1) |