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Contingencies and commitments - Summary of indemnities and other performance guarantees (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Contingencies And Commitments [Abstract] |  |
Contingent liabilities, indemnities and other performance guarantees | $ 192 | $ 435
Contingent liabilities incurred in relation to interests in joint ventures and associates | $ 0 | $ 0

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- Definition The amount of contingent liabilities incurred in relation to interests in joint ventures. [Refer: Classes of contingent liabilities [domain]; Total for all joint ventures [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2024-01-01 -Paragraph 23 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_23_b&doctype=Standard -URIDate 2024-03-27 + Details
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Period Type: | instant

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- Definition The amount of the estimated financial effect of contingent liabilities. [Refer: Classes of contingent liabilities [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2024-01-01 -Paragraph 86 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_86_a&doctype=Standard -URIDate 2024-03-27 + Details
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Balance Type: | credit
Period Type: | instant

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- Definition Contingencies And Commitments [Abstract] + References No definition available. + Details
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