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Pensions and Post-Employment Benefits - Aggregate Projected Benefit Obligation for Pension Plans and Other Post-employment Benefits and the Plan Assets by Country (Detail) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Disclosure of fair value of plan assets [line items] |  |  |
PBO | $ 1,704 | $ 2,010 | $ 1,903
Assets | 1,145 | 1,275 | $ 1,208
Deficit | 559 | 735 |
Mexico [member] |  |  |
Disclosure of fair value of plan assets [line items] |  |  |
PBO | 200 | 253 |
Assets | 30 | 44 |
Deficit | 170 | 209 |
United States [member] |  |  |
Disclosure of fair value of plan assets [line items] |  |  |
PBO | 142 | 184 |
Assets | 143 | 188 |
Deficit | (1) | (4) |
United Kingdom [member] |  |  |
Disclosure of fair value of plan assets [line items] |  |  |
PBO | 960 | 1,129 |
Assets | 752 | 821 |
Deficit | 208 | 308 |
Germany [member] |  |  |
Disclosure of fair value of plan assets [line items] |  |  |
PBO | 121 | 141 |
Assets | 5 | 6 |
Deficit | 116 | 135 |
Other countries [member] |  |  |
Disclosure of fair value of plan assets [line items] |  |  |
PBO | 281 | 303 |
Assets | 215 | 216 |
Deficit | $ 66 | $ 87 |

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- Definition The present value, without deducting any plan assets, of expected future payments required to settle the obligation resulting from employee service in the current and prior periods. [Refer: Plan assets, at fair value] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 57 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_57_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The fair value of defined benefit plan assets. Plan assets comprise assets held by a long-term employee benefit fund and qualifying insurance policies. [Refer: At fair value [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 57 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_57_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The fair value of any plan assets, less the present value of the defined benefit obligation. [Refer: Plan assets [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 57 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_57_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Details
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