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Income Taxes - Summary of Current and Deferred Income Tax Relative to Items of Other Comprehensive Income Loss (Detail) - MXN ($) $ in Millions | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Income tax relating to components of other comprehensive income [abstract] |  |  |
Tax effects relative to foreign exchange fluctuations from debt (note 20.2) | $ 0 | $ (410) | $ (272)
Tax effects relative to foreign exchange fluctuations from intercompany balances (note 20.2) | 32 | (12) | (181)
Tax effects relative to actuarial (gains) and losses (note 20.2) | (1) | 788 | 183
Foreign currency translation and other effects | 201 | (274) | 906
Total current and deferred income tax relative to items of other comprehensive income (loss) | $ 232 | $ 92 | $ 636

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- Definition Income tax relating to foreign exchange fluctuations from intercompany balances. + References No definition available. + Details
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- Definition Income tax relating to tax effects relative to actuarial gains lose. + References No definition available. + Details
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- Definition The amount of income tax relating to amounts recognised in other comprehensive income in relation to change in value of foreign currency basis spreads. [Refer: Reserve of change in value of foreign currency basis spreads; Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2018-01-01 -Name IAS -Number 12 -IssueDate 2017-01-01 -Paragraph 81 -Subparagraph ab -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2017-03-01&anchor=para_81_ab&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2018-01-01 -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 90 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_90&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of income tax relating to amounts recognised in other comprehensive income in relation to hedges of net investments in foreign operations. [Refer: Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2017-01-01 -Paragraph 81 -Subparagraph ab -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2017-03-01&anchor=para_81_ab&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 90 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_90&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of income tax relating to an entity's share of other comprehensive income of associates and joint ventures accounted for using the equity method. [Refer: Share of other comprehensive income of associates and joint ventures accounted for using equity method, before tax] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 90 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_90&doctype=Standard -URIDate 2017-03-09 + Details
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