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Bonus Programs - Additional Information (Detail)
$ in Millions
12 Months Ended
Dec. 31, 2023
MXN ($)
shares
Dec. 31, 2022
MXN ($)
shares
Dec. 31, 2021
MXN ($)
shares
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Annual bonus percentage 50.00% 50.00%  
Bonus expense $ 964 $ 1,527 $ 856
Number of options granted | shares 0 0 0
The total expense recognized for the period arising from share-based payment transactions $ 319 $ 326 $ 276
Share based payments $ 534 $ 360  
FEMSA      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Annual bonus percentage 50.00%    
Vesting percentage 33.00%    
Number of options granted | shares 3,541,763,000,000