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Other Liabilities, Provisions and Commitments - Summary of Nature and Amount of Loss Contingencies Recorded (Detail) - MXN ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | --- | ---
Disclosure of other provisions [line items] |  |  |  |
Provisions | $ 4,150 | $ 5,100 |  |
Taxes |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Provisions | 2,066 | 2,540 | $ 4,696 | $ 5,038
Labor |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Provisions | 1,472 | 1,681 | 2,222 | 2,340
Legal |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Provisions | $ 612 | $ 879 | $ 1,065 | $ 920

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- Definition The amount of liabilities of uncertain timing or amount, including provisions for employee benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 54 -Subparagraph l -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_l&doctype=Standard -URIDate 2021-03-24 + Details
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