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Taxes - Schedule of Changes in Net Deferred Income Tax Asset (Detail) - MXN ($) $ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Major components of tax expense (income) [abstract] |  |  |
Balance at the beginning of the period | $ (10,657) | $ (9,720) | $ (1,016)
Deferred tax provision for the period | (1,176) | (311) | (8,218)
Deferred tax income net recorded in share of the profit of equity accounted investees | (406) | 165 | (67)
Acquisition of subsidiaries | (382) | (316) | (367)
Unrealized (gain) on cash flow hedges | (391) | (445) | (83)
Exchange differences on translation of foreign operations | (2,121) | (1,762) | (1,472)
Remeasurements of the net defined benefit liability | (204) | 543 | 131
Retained earnings of equity accounted investees | 384 | 54 | (38)
Cash flow hedges in foreign investments | 425 | 310 | (540)
Restatement effect of the period and beginning balances associated with hyperinflationary economies | 953 | 438 | 1,689
Disposal of subsidiaries |  | 387 |
Deconsolidation of subsidiaries |  |  | 261
Balance at the end of the period | $ (13,575) | $ (10,657) | $ (9,720)

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- Definition Adjustments for monetary position gain loss net. + References No definition available. + Details
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- Definition Change In Deferred Tax Assets Relating To Cash Flow Hedges In Foreign Investments + References No definition available. + Details
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- Definition Change In deferred tax assets relating to disposal of subsidiaries. + References No definition available. + Details
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- Definition Deconsolidation of subsidiaries. + References No definition available. + 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 Assets, Unrealized Exchange (Gains) Losses + References No definition available. + Details
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- Definition Deferred tax income net recorded in share of the profits of equity accounted investees. + 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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- Definition Retained earnings of equity accounted investees. + References No definition available. + Details
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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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