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Mergers, Acquisitions and Disposals - Disposals (Details) - MXN ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |
Impairment of long-lived assets | $ 1,427 | $ 5,451 | $ 1,018
Specialty's Caf & Bakery, Inc |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |
Impairment of long-lived assets |  | $ 2,021 |

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