v3.26.1
Financial Instruments - Interest Rate Risks (Details) - Interest rate risk - MXN ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Interest rate swaps | FEMSA Entity Excluding Coca-Cola FEMSA      
Disclosure of Interest Rate Risk Exposure [line items]      
Effect on Equity $ (46) $ (148) $ (9)
Unhedged Portion Bank Loans      
Disclosure of Interest Rate Risk Exposure [line items]      
Effect on profit loss $ (243) $ (258) $ (250)