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Additional disclosure items G.3.2. Tax related risks and uncertain tax position (Details) - USD ($) $ in Millions | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Disclosure of other provisions [line items] |  |
Uncertain tax positions, remote risk | 5.00% |
Uncertain tax positions, probable risk | 50.00% |
Provision for taxes other than income tax |  |
Disclosure of other provisions [line items] |  |
Other provisions | $ 32 | $ 54
Tax contingent liability |  |
Disclosure of other provisions [line items] |  |
Estimated financial effect of contingent liabilities | 376 | 304
Total for all joint ventures | Provision for taxes other than income tax |  |
Disclosure of other provisions [line items] |  |
Other provisions | 8 | 8
Total for all joint ventures | Tax contingent liability |  |
Disclosure of other provisions [line items] |  |
Estimated financial effect of contingent liabilities | $ 160 | $ 134
Bottom of range |  |
Disclosure of other provisions [line items] |  |
Uncertain tax positions, possible risk | 5.00% |
Top of range |  |
Disclosure of other provisions [line items] |  |
Uncertain tax positions, possible risk | 50.00% |

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