v3.25.1
Bonus Programs - Summary of Shares Granted Under the Company's Executive Incentive Plans (Detail) - shares
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Number of share options granted in share-based payment arrangement 0 0 0
FEMSA      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Number of share options granted in share-based payment arrangement 3,876,340,000,000    
FEMSA | 2020      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Number of share options granted in share-based payment arrangement 666,281,000,000    
FEMSA | 2021      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Number of share options granted in share-based payment arrangement 780,524,000,000    
FEMSA | 2022      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Number of share options granted in share-based payment arrangement 856,664,000,000    
FEMSA | 2023      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Number of share options granted in share-based payment arrangement 926,288,000,000    
FEMSA | 2024      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Number of share options granted in share-based payment arrangement 646,583,000,000    
KOF      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Number of share options granted in share-based payment arrangement 5,467,272,000,000    
KOF | 2020      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Number of share options granted in share-based payment arrangement 956,926,000,000    
KOF | 2021      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Number of share options granted in share-based payment arrangement 1,197,820,000,000    
KOF | 2022      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Number of share options granted in share-based payment arrangement 1,289,204,000,000    
KOF | 2023      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Number of share options granted in share-based payment arrangement 1,134,810,000,000    
KOF | 2024      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Number of share options granted in share-based payment arrangement 888,512,000,000