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Income Taxes - Summary of Net Deferred Income Tax Liability (Detail) - MXN ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Changes in deferred tax liability (asset) [abstract] |  |  |
Balance at beginning of the period | $ (6,298) | $ (4,776) | $ (2,975)
Deferred tax provision for the period | 497 | (1,763) | (4,381)
Change in the statutory rate | 63 |  |
Acquisition of subsidiaries, see Note 4 | (413) | (563) | 150
Venezuela effect |  | 261 |
Effects in equity: |  |  |
Unrealized loss (gain) on derivative financial instruments | (21) | (160) | 324
Cumulative translation adjustment | 31 | 221 | 1,766
Remeasurements of the net defined benefit liability | 152 | (61) | 12
Inflation adjustment | 20 | 543 | 328
Philippines disposal | 387 |  |
Balance at end of the period | $ (5,582) | $ (6,298) | $ (4,776)

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- Definition The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2018-01-01 -Paragraph 81 -Subparagraph g -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_g_i&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The gains (losses) representing the difference resulting from the restatement of non-monetary assets, owners' equity and items in the statement of comprehensive income and the adjustment of index linked assets and liabilities in hyperinflationary reporting. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 29 -IssueDate 2018-01-01 -Paragraph 9 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=29&date=2018-03-01&anchor=para_9&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The increase (decrease) in equity resulting from the disposal of subsidiaries. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 106 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_106_d&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to changes in the tax rate. [Refer: Accounting profit] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2018-01-01 -Paragraph 81 -Subparagraph c -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_c_i&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Deferred income tax asset acquisition of subsidiaries. + References No definition available. + Details
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- Definition Deferred tax assets relating to provisions. + References No definition available. + Details
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- Definition Deferred tax foreign tax effect. + References No definition available. + Details
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- Definition Deferred Tax Liability Unrealized exchange gains. + References No definition available. + Details
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- Definition Income tax relating unrealized gain (loss) on derivative financial instruments. + References No definition available. + Details
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- Definition Remeasurements of the net defined employee benefit liability. + References No definition available. + Details
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