Financial and capital risk management (Details 1) - Not Designated As Hedging Instruments [Member] - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| IfrsStatementLineItems [Line Items] | ||
| Derivative Financial Assets Liabilities | $ 715 | $ 471 |
| Foreign Exchange And Interest Rate Risk [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Derivative Financial Assets Liabilities | 737 | 455 |
| Commodity price risk [member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Derivative Financial Assets Liabilities | (20) | $ 16 |
| Embedded Derivatives Risk [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Derivative Financial Assets Liabilities | $ (2) |