Financial Instruments - Options to Purchase Foreign Currency (Details) - MXN ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Disclosure of detailed information about hedges [line items] | ||
| Notional Amount | $ 76,500 | $ 67,218 |
| 2027 | ||
| Disclosure of detailed information about hedges [line items] | ||
| Notional Amount | 1,797 | |
| 2026 | ||
| Disclosure of detailed information about hedges [line items] | ||
| Notional Amount | 5,541 | |
| Options To Purchase Foreign Currency | Commodity price contracts | 2027 | Coca-Cola FEMSA | ||
| Disclosure of detailed information about hedges [line items] | ||
| Notional Amount | 1,377 | |
| Fair value | (83) | |
| Fair Value Asset | $ 136 | |
| Options To Purchase Foreign Currency | Commodity price contracts | 2026 | Coca-Cola FEMSA | ||
| Disclosure of detailed information about hedges [line items] | ||
| Notional Amount | 3,701 | |
| Fair value | (24) | |
| Fair Value Asset | $ 248 |