v3.26.1
Material Accounting Policies - Other Current Assets, Equity Method Accounted Investees, Property, Plant and Equipment, Leases (Details) - MXN ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Property, Plant and Equipment      
Fair value loss on the investment $ 372    
Fair value of investment 0 $ 0 $ 0
Accumulated losses recognized $ 2,445 2,073 1,777
Retail Stores      
Property, Plant and Equipment      
Operating lease term 15 years    
Bottom of range | Retail Stores      
Property, Plant and Equipment      
Operating lease term 3 years    
Bottom of range | Office Space      
Property, Plant and Equipment      
Operating lease term 3 years    
Top of range | Retail Stores      
Property, Plant and Equipment      
Operating lease term 5 years    
Top of range | Office Space      
Property, Plant and Equipment      
Operating lease term 5 years    
Coca-Cola FEMSA      
Property, Plant and Equipment      
Amortisation expense $ 259 $ 258 $ 304
Coca-Cola FEMSA | Glass bottles      
Property, Plant and Equipment      
Estimated useful lives of principal assets 4 years    
Coca-Cola FEMSA | PET bottles      
Property, Plant and Equipment      
Estimated useful lives of principal assets 1 year 6 months    
Coca-Cola FEMSA | Buildings | Bottom of range      
Property, Plant and Equipment      
Estimated useful lives of principal assets 20 years    
Coca-Cola FEMSA | Buildings | Top of range      
Property, Plant and Equipment      
Estimated useful lives of principal assets 50 years    
Coca-Cola FEMSA | Machinery and equipment | Bottom of range      
Property, Plant and Equipment      
Estimated useful lives of principal assets 5 years    
Coca-Cola FEMSA | Machinery and equipment | Top of range      
Property, Plant and Equipment      
Estimated useful lives of principal assets 25 years    
Coca-Cola FEMSA | Distribution equipment | Bottom of range      
Property, Plant and Equipment      
Estimated useful lives of principal assets 3 years    
Coca-Cola FEMSA | Distribution equipment | Top of range      
Property, Plant and Equipment      
Estimated useful lives of principal assets 14 years    
Coca-Cola FEMSA | Refrigeration equipment | Bottom of range      
Property, Plant and Equipment      
Estimated useful lives of principal assets 7 years    
Coca-Cola FEMSA | Refrigeration equipment | Top of range      
Property, Plant and Equipment      
Estimated useful lives of principal assets 10 years    
Coca-Cola FEMSA | Returnable bottles | Bottom of range      
Property, Plant and Equipment      
Estimated useful lives of principal assets 1 year 6 months    
Coca-Cola FEMSA | Returnable bottles | Top of range      
Property, Plant and Equipment      
Estimated useful lives of principal assets 4 years    
Coca-Cola FEMSA | Leasehold improvements      
Property, Plant and Equipment      
Estimated useful lives of principal assets 20 years    
Coca-Cola FEMSA | Information technology equipment | Bottom of range      
Property, Plant and Equipment      
Estimated useful lives of principal assets 3 years    
Coca-Cola FEMSA | Information technology equipment | Top of range      
Property, Plant and Equipment      
Estimated useful lives of principal assets 6 years    
Coca-Cola FEMSA | Other equipment | Bottom of range      
Property, Plant and Equipment      
Estimated useful lives of principal assets 2 years    
Coca-Cola FEMSA | Other equipment | Top of range      
Property, Plant and Equipment      
Estimated useful lives of principal assets 15 years