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Post-Employment and Other Non-current Employee Benefits - Additional Information (Detail) - MXN ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Disclosure of defined benefit plans [line items]    
Post employment least invest percentage 30.00%  
Employee profit sharing $ 1,059 $ 1,069
Actuarial Assumption of Discount Rates    
Disclosure of defined benefit plans [line items]    
Impact on absolute terms of variation in the assumptions on net defined benefit liability 1.00%  
Percentage of significant actuarial assumptions 1.00%  
Bottom of Range    
Disclosure of defined benefit plans [line items]    
Weighted average duration of defined benefit obligation 20 years 1 month 6 days 16 years 9 months 18 days
Top of Range    
Disclosure of defined benefit plans [line items]    
Weighted average duration of defined benefit obligation 19 years 6 months 16 years 9 months 18 days