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Financial risk management - D.6. Capital management (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024
Financial Instruments [Abstract] |  |
Net debt | $ 5,357 | $ 5,174
Equity attributable to Owners of the Company | 3,640 | 3,628
Net debt and equity | $ 8,997 | $ 8,802
Gearing ratio | 60.00% | 59.00%

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- Definition The amount of equity attributable to the owners of the parent. This specifically excludes non-controlling interest. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 54 -Subparagraph r -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_r&doctype=Standard -URIDate 2025-03-27 + Details
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