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Additional disclosure items G.3.2. Tax related risks and uncertain tax position (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure of other provisions [line items] |  |
Uncertain tax positions, remote risk | 20.00% |
Uncertain tax positions, probable risk | 50.00% |
Provision for taxes other than income tax |  |
Disclosure of other provisions [line items] |  |
Other provisions | $ 38 | $ 69
Tax contingent liability |  |
Disclosure of other provisions [line items] |  |
Estimated financial effect of contingent liabilities | 221 | 342
Joint ventures | Provision for taxes other than income tax |  |
Disclosure of other provisions [line items] |  |
Other provisions | 7 | 3
Joint ventures | Tax contingent liability |  |
Disclosure of other provisions [line items] |  |
Estimated financial effect of contingent liabilities | $ 97 | $ 68
Bottom of range |  |
Disclosure of other provisions [line items] |  |
Uncertain tax positions, possible risk | 21.00% |
Top of range |  |
Disclosure of other provisions [line items] |  |
Uncertain tax positions, possible risk | 49.00% |

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