XML 90 R70.htm IDEA: XBRL DOCUMENT
v3.21.1

Significant Accounting Policies - Intangibles, Impairment, Benefits, Selling, Taxes (Detail) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 MXN ($) age item | Dec. 31, 2019 MXN ($) | Dec. 31, 2018 MXN ($) | Dec. 31, 2017
Disclosure of significant accounting policies [line items] |  |  |  |
Impairment recognized | $ | $ 5,451 | $ 1,018 | $ 432 |
Intangible assets renewable term | 10 years |  |  |
Number of years of service for retirement benefits | 10 years |  |  |
Benefit payment, number of days wages | 12 |  |  |
Years of service for seniority retirement benefits | 15 years |  |  |
Distribution costs | $ | $ 24,190 | $ 25,068 | $ 23,421 |
Profit sharing computation ratio on income | 10.00% |  |  |
Income tax rate | 30.00% | 30.00% | 30.00% |
Bottom of range [member] | Customer relationships [member] |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Estimated useful lives | 10 years |  |  |
Bottom of range [member] | Information technology and management system costs [member] |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Estimated useful lives | 3 years |  |  |
Bottom of range [member] | Long-term alcohol licenses [member] |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Estimated useful lives | 12 years |  |  |
Top of range [member] | Customer relationships [member] |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Estimated useful lives | 20 years |  |  |
Top of range [member] | Information technology and management system costs [member] |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Estimated useful lives | 10 years |  |  |
Top of range [member] | Long-term alcohol licenses [member] |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Estimated useful lives | 15 years |  |  |
Mexico [member] |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Number of bottling agreements | 4 |  |  |
Minimum age for retirement benefits | age | 60 |  |  |
Income tax rate |  | 30.00% | 30.00% | 30.00%
Bajio Territory, Mexico [Member] |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Number of bottling agreements | 1 |  |  |
Brazil [member] |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Number of bottling agreements | 2 |  |  |
Guatemala [member] |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Number of bottling agreements | 3 |  |  |
Number of bottling agreements, after renewal | 2 |  |  |
Argentina [member] |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Number of bottling agreements | 1 |  |  |
Income tax rate |  |  |  | 35.00%
Colombia [member] |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Income tax rate | 32.00% | 33.00% |  |
Venezuela [member] |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Number of bottling agreements | 1 |  |  |

X
- Definition Disclosure of significant accounting policies. + References No definition available. + Details
Name: | fmx_DisclosureOfSignificantAccountingPoliciesLineItems
Namespace Prefix: | fmx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Intangible assets renewable term. + References No definition available. + Details
Name: | fmx_IntangibleAssetsRenewableTerm
Namespace Prefix: | fmx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum age for retirement benefits. + References No definition available. + Details
Name: | fmx_MinimumAgeForRetirementBenefits
Namespace Prefix: | fmx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of years of service for seniority retirement benefits. + References No definition available. + Details
Name: | fmx_MinimumYearOfServiceForRetirementBenefits
Namespace Prefix: | fmx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of agreements giving rise to intangible assets. + References No definition available. + Details
Name: | fmx_NumberOfAgreementsRelatedToIntangibleAssets
Namespace Prefix: | fmx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of agreements giving rise to intangible assets, after renewal process. + References No definition available. + Details
Name: | fmx_NumberOfAgreementsRelatedToIntangibleAssetsAfterRenewal
Namespace Prefix: | fmx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of days wages per year of service that are paid out in the one-time payment of post retirement benefits. + References No definition available. + Details
Name: | fmx_PostEmploymentBenefitOneTimePaymentNumberOfDaysWages
Namespace Prefix: | fmx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Profit sharing computation percentage on taxable income. + References No definition available. + Details
Name: | fmx_ProfitSharingComputationPercentageOnTaxableIncome
Namespace Prefix: | fmx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of years of service for retirement benefits. + References No definition available. + Details
Name: | fmx_RetirementBenefitsNumberOfYearsOfService
Namespace Prefix: | fmx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Useful lives property plant and equipment. + References No definition available. + Details
Name: | fmx_UsefulLivesPropertyPlantAndEquipment
Namespace Prefix: | fmx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The applicable income tax rate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph c -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_c_ii&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_ApplicableTaxRate
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of costs relating to the distribution of goods and services. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 103 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_103&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
Name: | ifrs-full_DistributionCosts
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount recognised as a reduction of the carrying amount of an asset or cash-generating unit to its recoverable amount. [Refer: Carrying amount [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2020-01-01 -Paragraph 130 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2020-en-r&anchor=para_130_b&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2020-01-01 -Paragraph 130 -Subparagraph d -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2020-en-r&anchor=para_130_d_ii&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_ImpairmentLoss
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_CustomerrelatedIntangibleAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=fmx_InformationTechnologyAndManagementSystemCostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=fmx_LongTermAlcoholLicensesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=country_MX
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=fmx_BajioTerritoryMexicoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=country_BR
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=country_GT
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=country_AR
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=country_CO
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=country_VE
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |