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Other Assets and Other Financial Assets - Additional Information (Detail) - MXN ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
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Disclosure Of Other Assets And Other Financial Assets [line items] |  |
Non-current accounts receivables | $ 724 | $ 733
Fair value [member] |  |
Disclosure Of Other Assets And Other Financial Assets [line items] |  |
Non-current accounts receivables | $ 740 | $ 707

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- Definition Line Items abstract of Disclosure of other assets and other financial assets. + References No definition available. + Details
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Period Type: | duration

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- Definition The amount of non-current trade receivables and non-current other receivables. [Refer: Non-current trade receivables; Other non-current receivables] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 54 -Subparagraph h -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_h&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_78_b&doctype=Standard -URIDate 2018-03-16 + Details
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Period Type: | instant

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |