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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, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Changes in deferred tax liability (asset) [abstract] |  |  |
Balance at beginning of the period | $ (5,582) | $ (6,298) | $ (4,776)
Deferred tax provision for the period | (363) | 497 | (1,763)
Change in the statutory rate | (66) | 63 |
Acquisition of subsidiaries, see Note 4 | 57 | (413) | (563)
Venezuela effect |  |  | 261
Effects in equity: |  |  |
Unrealized (gain) on derivative financial instruments | (373) | (21) | (160)
Cumulative translation adjustment | (230) | 31 | 221
Remeasurements of the net defined benefit liability | (192) | 152 | (61)
Inflation adjustment | 88 | 20 | 543
Philippines disposal |  | 387 |
Balance at end of the period | $ (6,661) | $ (5,582) | $ (6,298)

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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 2019-01-01 -Paragraph 81 -Subparagraph g -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2019-en-r&anchor=para_81_g_i&doctype=Standard -URIDate 2019-03-27 + 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 2019-01-01 -Paragraph 9 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=29&code=ifrs-tx-2019-en-r&anchor=para_9&doctype=Standard -URIDate 2019-03-27 + 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 2019-01-01 -Paragraph 106 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_106_d&doctype=Standard -URIDate 2019-03-27 + 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 2019-01-01 -Paragraph 81 -Subparagraph c -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2019-en-r&anchor=para_81_c_i&doctype=Standard -URIDate 2019-03-27 + 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 Liability Unrealized exchange gains. + 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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