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Balances and Transactions with Related Parties and Affiliated Companies - Summary of Transactions and Other Related Parties (Detail) - MXN ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Income: |  |  |
Sales to affiliated parties | $ 10,185 | $ 8,459 | $ 6,546
Expenses: |  |  |
Other expenses with related parties | 0 | 0 | 0
Jugos del valle, S.A.P.I. de C.V. |  |  |
Expenses: |  |  |
Purchases and other expenses with related party | 4,763 | 3,718 | 3,234
Promotora Industrial Azucarera, S.A. de C.V. ("PIASA") |  |  |
Expenses: |  |  |
Purchases and other expenses with related party | 2,718 | 2,841 | 2,841
Beta San Miguel |  |  |
Expenses: |  |  |
Purchases and other expenses with related party | 722 | 917 | 724
Industria Envasadora de Quertaro, S.A. de C.V. (IEQSA) |  |  |
Expenses: |  |  |
Purchases and other expenses with related party | 989 | 843 | 577
Fountain Agua Mineral, LTDA |  |  |
Expenses: |  |  |
Purchases and other expenses with related party | 1,143 | 638 | 0
Leao Alimentos e Bebidas, LTDA |  |  |
Expenses: |  |  |
Purchases and other expenses with related party | 112 | 181 | 215
Industria Mexicana de Reciclaje, S.A. de C.V. ("IMER") |  |  |
Expenses: |  |  |
Purchases and other expenses with related party | 356 | 458 | 504
Instituto Tecnologico Y de Estudios Superiores de Monterrey AC |  |  |
Expenses: |  |  |
Donations to related party | 0 | 1 | 110
Fundacion FEMSA AC |  |  |
Expenses: |  |  |
Donations to related party | 0 | 285 | 173
Heineken Group |  |  |
Income: |  |  |
Sales to affiliated parties | 0 | 0 | 2
Expenses: |  |  |
Purchases of raw material, beer and operating expenses from Heineken | 0 | 0 | 5,036
FEMSA |  |  |
Expenses: |  |  |
Purchases and other expenses with related party | 7,196 | 9,547 | 10,129
The Coca-Cola Company |  |  |
Expenses: |  |  |
Purchases of concentrate from The Coca-Cola Company | 54,502 | 46,461 | 43,717
Advertisement expense paid to The Coca-Cola Company | $ 948 | $ 869 | $ 545

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