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) |