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Other Liabilities, Provisions, Contingencies and Commitments - Contingencies (Details) - MXN ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | --- | ---
Disclosure of financial liabilities [line items] |  |  |  |
Provisions | $ 5,589 | $ 6,303 |  |
Indirect taxes |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |
Provisions | 2,845 | 3,153 | $ 5,062 | $ 5,421
Labor |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |
Provisions | 1,807 | 1,857 | 2,455 | 2,601
Legal |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |
Provisions | $ 937 | $ 1,293 | $ 1,337 | $ 1,906

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