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Employee benefits (Details 3) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2025 | Dec. 31, 2024
Overfunded Pension Plans [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Benefit obligation (Plan assets) as at beginning of the year | $ 860 | $ 1,071
Interest income | 31 | 69
Changes on asset ceiling | 41 | (76)
Translation adjustment | 105 | (204)
Benefit obligation (Plan assets) as at ending of the year | 1,037 | 860
Net defined benefit liability (asset) | 116 | 110
Current provisions for employee benefits | 10 |
Non-current provisions for employee benefits | 106 | 110
Provisions for employee benefits | 116 | 110
Overfunded Pension Plans [Member] | Present Value Of Actuarial Liabilities [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Net defined benefit liability (asset) | (3,554) | (3,346)
Overfunded Pension Plans [Member] | Fair Value Of Assets [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Net defined benefit liability (asset) | 4,707 | 4,316
Overfunded Pension Plans [Member] | Effect of asset ceiling [member] |  |
IfrsStatementLineItems [Line Items] |  |
Net defined benefit liability (asset) | (1,037) | (860)
Underfunded Pension Plans And Other Benefits [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Interest income |  |
Changes on asset ceiling |  |
Net defined benefit liability (asset) | (1,231) | (1,180)
Current provisions for employee benefits | (61) | (62)
Non-current provisions for employee benefits | (1,170) | (1,118)
Provisions for employee benefits | (1,231) | (1,180)
Underfunded Pension Plans And Other Benefits [Member] | Present Value Of Actuarial Liabilities [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Net defined benefit liability (asset) | (2,036) | (1,923)
Underfunded Pension Plans And Other Benefits [Member] | Fair Value Of Assets [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Net defined benefit liability (asset) | $ 805 | $ 743

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- Definition The decrease (increase) in the net defined benefit liability (asset) resulting from the gain (loss) on changes in the effect of limiting a net defined benefit asset to the asset ceiling, excluding amounts included in interest income or expense. [Refer: Interest income (expense); Net defined benefit liability (asset); Increase (decrease) in net defined benefit liability (asset) resulting from interest expense (income)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 141 -Subparagraph c -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_141_c_iv&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from changes in foreign exchange rates. [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 141 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_141_e&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from the passage of time. [Refer: Interest expense; Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 141 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_141_b&doctype=Standard -URIDate 2024-03-27 + Details
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- References No definition available. + Details
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- References No definition available. + Details
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- References No definition available. + Details
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- Details
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- Details
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- Details
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