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Other Income and Expenses - Summary of Other Income and Expenses (Detail) $ in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($) | Dec. 31, 2020 MXN ($) | Dec. 31, 2019 MXN ($) | Dec. 31, 2018 MXN ($)
Disclosure of Other Operating Income Expense [Line Items] |  |  |  |
Gain on sale of other assets |  |  |  | $ 344
Gain on sale of long-lived assets |  | $ 130 |  | 174
Sale of waste material |  | 20 | $ 21 | 13
Insurance rebates |  | 35 |  | 10
Foreign exchange gain |  | 112 | 26 | 123
Other investment in shares |  | 2,011 |  |
Recycling of cumulative gain on sale of joint venture |  | 212 |  |
Recoveries of prior years |  | 594 | 896 |
Others |  | 229 | 70 | 9
Other income | $ 168 | 3,343 | 1,013 | 673
Contingencies associated with prior acquisitions or disposals |  |  | 149 | 138
Loss on sale of property, plant and equipment |  |  | 67 |
Recoveries of prior years |  |  | 44 | 116
Impairment loss excluding intangibles and other | $ 256 | 5,102 | 1,018 | 432
Loss in write-off of intangible assets |  | 375 |  |
Disposal of long-lived assets |  | 915 | 861 | 518
Contingencies |  | 804 | 589 | 518
Severance payments |  | 465 | 1,207 | 264
Donations |  | 605 | 489 | 528
Legal fees and other expenses from past acquisitions |  |  | 17 | 149
Effect of taxes paid on previous years |  | 3,253 |  |
Other |  | 862 | 464 | 284
Other expenses |  | 12,381 | 4,905 | $ 2,947
Compania Panamena de Bebidas, S.A.P.I. de C.V. [member] |  |  |  |
Disclosure of Other Operating Income Expense [Line Items] |  |  |  |
Impairment loss excluding intangibles and other |  | 1,463 | $ 948 |
Leao Alimentos e Bebidas, L T DA [Member] |  |  |  |
Disclosure of Other Operating Income Expense [Line Items] |  |  |  |
Impairment loss excluding intangibles and other |  | 1,038 |  |
Specialty’s Café & Bakery, Inc [Member] |  |  |  |
Disclosure of Other Operating Income Expense [Line Items] |  |  |  |
Impairment loss excluding intangibles and other |  | 2,021 |  |
Doña Tota [Member] |  |  |  |
Disclosure of Other Operating Income Expense [Line Items] |  |  |  |
Impairment loss excluding intangibles and other |  | $ 576 |  |

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- Definition Legal fees and other expenses from past acquisitions. + References No definition available. + Details
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- Definition The amount of expense relating to restructuring. Restructuring is a programme that is planned and controlled by management and materially changes either the scope of a business undertaken by an entity or the manner in which that business is conducted. Such programmes include: (a) the sale or termination of a line of business; (b) closure of business locations in a country or region or the relocation of activities from one country or region to another; (c) changes in management structure; and (d) fundamental reorganisations that have a material effect on the nature and focus of the entity's operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 98 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_98_b&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of impairment loss recognised in profit or loss for intangible assets other than goodwill. [Refer: Impairment loss recognised in profit or loss; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2020-01-01 -Paragraph 118 -Subparagraph e -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_e_iv&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of income recognised from the reimbursement of a claim as a result of the occurrence of an insured event covered by an insurance contract. [Refer: Types of insurance contracts [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The losses on the disposal of property, plant and equipment. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 98 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_98_c&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of miscellaneous other operating expenses. [Refer: Other operating income (expense)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of expenses that the entity does not separately disclose in the same statement or note when the entity uses the 'nature of expense' form for its analysis of expenses. [Refer: Expenses, by nature] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 102 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_102&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 99 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_99&doctype=Standard -URIDate 2020-01-01 + Details
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