Bonus Programs - Number of Shares Held by the Trust (Details) - shares |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| FEMSA UBD | ||
| Disclosure of terms and conditions of share-based payment arrangement [line items] | ||
| Beginning balance (in shares) | 6,208,237 | 7,283,198 |
| Shares acquired by the administrative trust to employees (in shares) | 3,923,707 | 2,768,091 |
| Shares released from administrative trust to employees upon vesting (in shares) | (3,940,191) | (3,843,052) |
| Ending balance (in shares) | 6,191,753 | 6,208,237 |
| KOF UBL | ||
| Disclosure of terms and conditions of share-based payment arrangement [line items] | ||
| Beginning balance (in shares) | 1,874,651 | 1,904,240 |
| Shares acquired by the administrative trust to employees (in shares) | 838,996 | 904,246 |
| Shares released from administrative trust to employees upon vesting (in shares) | (1,059,870) | (933,835) |
| Ending balance (in shares) | 1,653,777 | 1,874,651 |