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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
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%