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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, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income: |  |  |
Sales to affiliated parties | $ 5,020 | $ 5,694 | $ 5,200
Expenses: |  |  |
Other expenses with related parties | 10 | 15 | 79
Jugos del Valle, S.A.P.I. de C.V. |  |  |
Expenses: |  |  |
Purchases and other expenses of coca cola FEMSA | 2,437 | 2,863 | 2,872
Promotora Industrial Azucarera, S.A. de C.V. ("PIASA") |  |  |
Expenses: |  |  |
Purchases and other expenses of coca cola FEMSA | 2,123 | 2,728 | 2,604
Beta San Miguel |  |  |
Expenses: |  |  |
Purchases and other expenses of coca cola FEMSA | 1,023 | 655 | 651
Industria Envasadora de Quertaro, S.A. de C.V. (IEQSA) |  |  |
Expenses: |  |  |
Purchases and other expenses of coca cola FEMSA | 226 | 682 | 596
Leao Alimentos e Bebidas, LTDA |  |  |
Expenses: |  |  |
Purchases and other expenses of coca cola FEMSA | 1,253 | 1,867 | 2,654
Industria Mexicana de Reciclaje, S.A. de C.V. ("IMER") |  |  |
Expenses: |  |  |
Purchases and other expenses of coca cola FEMSA | 308 | 281 | 298
Instituto Tecnologico Y de Estudios Superiores de Monterrey AC |  |  |
Expenses: |  |  |
Donations to related party | 225 | 127 | 127
Fundacion FEMSA AC |  |  |
Expenses: |  |  |
Donations to related party | 114 | 146 | 179
BBVA Bancomer SA de CV |  |  |
Income: |  |  |
Interest income received from BBVA Bancomer, S.A. de C.V. | 80 | 30 | 180
Expenses: |  |  |
Interest and fees paid to Bancomer | 153 | 98 | 168
Heineken Group |  |  |
Income: |  |  |
Sales to affiliated parties | 3 | 5 | 4
Expenses: |  |  |
Purchases of raw material, beer and operating expenses from Heineken | 11,600 | 12,755 | 14,959
FEMSA |  |  |
Expenses: |  |  |
Purchases and other expenses of coca cola FEMSA | 6,538 | 7,756 | 8,878
The Coca-Cola Company |  |  |
Expenses: |  |  |
Purchases of concentrate from The Coca-Cola Company | 32,222 | 34,063 | 32,379
Advertisement expense paid to The Coca-Cola Company | 865 | 1,756 | 2,193
AdeS |  |  |
Expenses: |  |  |
Purchases and other expenses of coca cola FEMSA | $ 338 | $ 497 | $ 592

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