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Income Taxes - Summary of Temporary Differences in Deferred Income Tax Assets and Liabilities (Detail) - MXN ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Net deferred tax asset (liability) | $ (3,333) | $ (984)
Deferred tax assets: |  |
Tax loss carryforwards and other tax credits | 13,796 | 15,900
Accounts payable and accrued expenses | 6,638 | 7,083
Intangible assets and deferred charges, net | 2,794 | 4,175
Total deferred tax assets, gross | 23,228 | 27,158
Presentation offset regarding same legal entity | (11,661) | (12,341)
Total deferred tax assets, net in the statement of financial position | 11,567 | 14,817
Deferred tax liabilities: |  |
Property, machinery and equipment | (25,972) | (27,268)
Investments and other assets | (589) | (874)
Total deferred tax liabilities, gross | (26,561) | (28,142)
Presentation offset regarding same legal entity | 11,661 | 12,341
Total deferred tax liabilities, net in the statement of financial position | (14,900) | (15,801)
Net deferred tax liabilities | (3,333) | (984)
Country of domicile [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Net deferred tax asset (liability) | (4,414) | (3,978)
Deferred tax assets: |  |
Total deferred tax assets, net in the statement of financial position | 3,079 | 3,212
Deferred tax liabilities: |  |
Total deferred tax liabilities, net in the statement of financial position | (7,493) | (7,190)
Net deferred tax liabilities | (4,414) | (3,978)
Foreign countries [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Net deferred tax asset (liability) | 1,081 | 2,994
Deferred tax assets: |  |
Total deferred tax assets, net in the statement of financial position | 8,488 | 11,605
Deferred tax liabilities: |  |
Total deferred tax liabilities, net in the statement of financial position | (7,407) | (8,611)
Net deferred tax liabilities | $ 1,081 | $ 2,994

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- Definition The amounts of income taxes recoverable in future periods in respect of: (a) deductible temporary differences; (b) the carryforward of unused tax losses; and (c) the carryforward of unused tax credits. [Refer: Temporary differences [member]; Unused tax credits [member]; Unused tax losses [member]] + 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 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 54 -Subparagraph o -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_o&doctype=Standard -URIDate 2018-03-16 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 56 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_56&doctype=Standard -URIDate 2018-03-16 + Details
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