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Mergers, Acquisitions and Disposals - Acquisition Information (Details) $ in Millions | 12 Months Ended |  |  |
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Dec. 31, 2020 MXN ($) item customer | Dec. 31, 2021 MXN ($) | Jan. 31, 2020 | Dec. 31, 2019 MXN ($)
Acquisition Of WAXIE Sanitary Supply And North American Corporation |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |
Business acquisition, percentage of voting equity interests acquired | 89.50% |  |  |
Business acquisition, consideration transferred | $ 20,233 |  |  |
Number of distribution centers | item | 26 |  |  |
Threshold number of customers served in various industries | customer | 27,000 |  |  |
Southeastern Paper Group, Inc |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |
Business acquisition, percentage of voting equity interests acquired | 100.00% |  |  |
Business acquisition, consideration transferred | $ 2,984 |  |  |
GPF |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |
Business acquisition, percentage of voting equity interests acquired | 100.00% |  |  |
AGV |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |
Business acquisition, percentage of voting equity interests acquired |  |  | 100.00% |
Other acquisitions |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |
Business acquisition, percentage of voting equity interests acquired |  | 100.00% |  |
Business acquisition, consideration transferred |  | $ 9,949 |  | $ 7,807

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