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Bonus Programs - Additional Information (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2021 MXN ($) | Dec. 31, 2020 MXN ($) | Dec. 31, 2019 MXN ($)
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |
Annual bonus percentage | 50.00% |  |
Bonus expense | $ 856 | $ 747 | $ 940
Vesting percentage | 33.00% |  |
Number of options granted | 0 | 0 | 0
Vesting period | 3 years |  |
The total expense recognized for the period arising from share-based payment transactions | $ 276 | $ 190 | $ 188
Share based payments | $ 303 | $ 192 |
FEMSA |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |
Annual bonus percentage | 50.00% |  |
Number of options granted | 2,296,662,000,000 |  |

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