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Pensions and Post-Employment Benefits - Summary of Significant Assumptions Used in the Determination of the Benefit Obligation (Detail) | Dec. 31, 2024 | Dec. 31, 2023
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Mexico [member] |  |
Disclosure of defined benefit plans [line items] |  |
Discount rates | 11.80% | 10.50%
Rate of return on plan assets | 11.80% | 10.50%
Rate of salary increases | 4.50% | 4.50%
United States [member] |  |
Disclosure of defined benefit plans [line items] |  |
Discount rates | 5.70% | 5.20%
Rate of return on plan assets | 5.70% | 5.20%
United Kingdom [member] |  |
Disclosure of defined benefit plans [line items] |  |
Discount rates | 5.60% | 4.70%
Rate of return on plan assets | 5.60% | 4.70%
Rate of salary increases | 3.20% | 3.10%
Top of range [member] | Other countries [member] |  |
Disclosure of defined benefit plans [line items] |  |
Discount rates | 9.50% | 11.00%
Rate of return on plan assets | 9.50% | 11.00%
Rate of salary increases | 7.30% | 7.30%
Bottom of range [member] | Other countries [member] |  |
Disclosure of defined benefit plans [line items] |  |
Discount rates | 3.30% | 3.10%
Rate of return on plan assets | 3.30% | 3.10%
Rate of salary increases | 2.50% | 2.50%

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- Definition The discount rate used as the significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [domain]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 144 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_144&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The expected rate of salary increases used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [domain]; Defined benefit obligation, at present value; Actuarial assumptions [domain]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 144 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_144&doctype=Standard -URIDate 2024-03-27 + Details
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