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Other Liabilities, Provisions, Contingencies and Commitments - Nature and Amount of Loss Contingencies (Detail) - MXN ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Jan. 01, 2015
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Disclosure of financial liabilities [line items] |  |  |  |
Provisions | $ 12,855 | $ 16,428 |  |
Indirect taxes [Member] |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |
Provisions | 6,836 | 11,065 | $ 1,725 | $ 2,271
Labor [Member] |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |
Provisions | 2,723 | 2,578 | 1,372 | 1,587
Legal [Member] |  |  |  |
Disclosure of financial liabilities [line items] |  |  |  |
Provisions | $ 3,296 | $ 2,785 | $ 318 | $ 427

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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 the amount recognised when: (a) the entity has a present obligation (legal or constructive) as a result of a past event; (b) it is probable (ie more likely than not) that an outflow of resources embodying economic benefits will be required to settle the obligation; and (c) a reliable estimate can be made of the amount of the obligation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 54 -Subparagraph l -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_l&doctype=Standard -URIDate 2017-03-09 + Details
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- Details
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