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Other Liabilities, Provisions, Contingencies and Commitments - Nature and Amount of Loss Contingencies (Detail) - MXN ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
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Disclosure of financial liabilities [line items] |  |  |  |
Provisions | $ 8,854 | $ 9,928 |  |
Indirect taxes [member] |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |
Provisions | 5,062 | 5,421 | $ 6,836 | $ 11,065
Labor [member] |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |
Provisions | 2,455 | 2,601 | 2,723 | 2,578
Legal [member] |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |
Provisions | $ 1,337 | $ 1,906 | $ 3,296 | $ 2,785

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of liabilities of uncertain timing or amount. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 54 -Subparagraph l -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_54_l&doctype=Standard -URIDate 2019-03-27 + Details
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