XML 111 R91.htm IDEA: XBRL DOCUMENT
v3.21.1

Leases - Right-of-use assets (Detail) $ in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($) | Dec. 31, 2020 MXN ($) | Dec. 31, 2019 MXN ($)
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Right-of-use assets, beginning |  | $ 52,684 | $ 50,220
Additions |  | 7,982 | 7,502
Additions from business combinations |  | 1,765 | 2,187
Disposals |  | (2,304) | (832)
Remeasurements |  | 3,833 | 2,290
Depreciation |  | (8,629) | (7,893)
Effects of changes in foreign exchange rates and restatement effects associated with hyperinflationary economies |  | (584) | (790)
Right-of-use assets, ending | $ 2,752 | 54,747 | 52,684
Land and buildings [member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Right-of-use assets, beginning |  | 51,926 | 49,112
Additions |  | 6,478 | 7,406
Additions from business combinations |  | 1,414 | 2,187
Disposals |  | (2,190) | (827)
Remeasurements |  | 3,749 | 2,299
Depreciation |  | (8,138) | (7,492)
Effects of changes in foreign exchange rates and restatement effects associated with hyperinflationary economies |  | (475) | (759)
Right-of-use assets, ending |  | 52,764 | 51,926
Other [member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Right-of-use assets, beginning |  | 758 | 1,108
Additions |  | 1,504 | 96
Additions from business combinations |  | 351 |
Disposals |  | (114) | (5)
Remeasurements |  | 84 | (9)
Depreciation |  | (491) | (401)
Effects of changes in foreign exchange rates and restatement effects associated with hyperinflationary economies |  | (109) | (31)
Right-of-use assets, ending |  | 1,983 | $ 758
Specialty’s Café & Bakery, Inc [Member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Disposals |  | $ 690 |

X
- Definition Acquisitions through business combinations, right of use assets. + References No definition available. + Details
Name: | fmx_AcquisitionsThroughBusinessCombinationsRightOfUseAssets
Namespace Prefix: | fmx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The decrease in right of use assets due to disposals. + References No definition available. + Details
Name: | fmx_DisposalsRightOfUseAssets
Namespace Prefix: | fmx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Effects of changes in foreign exchange rates, right of use assets. + References No definition available. + Details
Name: | fmx_EffectsOfChangesInForeignExchangeRatesRightOfUseAssets
Namespace Prefix: | fmx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Remeasurements right of use assets. + References No definition available. + Details
Name: | fmx_RemeasurementsRightOfUseAssets
Namespace Prefix: | fmx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of additions to right-of-use assets. [Refer: Right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Paragraph 53 -Subparagraph h -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_53_h&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_AdditionsToRightofuseAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of depreciation of right-of-use assets. [Refer: Depreciation and amortisation expense; Right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Paragraph 53 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_53_a&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_DepreciationRightofuseAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of assets that represent a lessee's right to use an underlying asset for the lease term. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Paragraph 53 -Subparagraph j -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_53_j&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_RightofuseAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | ifrs-full_ClassesOfAssetsAxis=ifrs-full_LandAndBuildingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfAssetsAxis=ifrs-full_OtherPropertyPlantAndEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ContinuingAndDiscontinuedOperationsAxis=fmx_SpecialtysCafBakeryIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |