XML 160 R140.htm IDEA: XBRL DOCUMENT
v3.21.1

Financial Instruments - Sensitivity Analysis of Market Risks (Detail) - MXN ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
FEMSA Entity Excluding Coca-Cola FEMSA [Member] | Cross-currency swaps [member] | MXN/USD |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Decrease in exchange rate, as a percent | (19.00%) | 9.00% | 13.00%
Effect on profit or loss from decrease in exchange rate | $ (6,381) | $ (1,805) | $ (2,706)
Increase in exchange rate, as a percent | 19.00% | 9.00% | 13.00%
Effect on profit or loss from increase in exchange rate | $ 6,381 | $ 1,805 | $ 2,706
FEMSA Entity Excluding Coca-Cola FEMSA [Member] | Cross-currency swaps [member] | COP/USD |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Decrease in exchange rate, as a percent | 16.00% | 10.00% | 12.00%
Effect on profit or loss from decrease in exchange rate | $ (426) | $ (286) | $ (283)
Increase in exchange rate, as a percent | 16.00% | 10.00% | 12.00%
Effect on profit or loss from increase in exchange rate | $ 426 | $ 286 | $ 283
FEMSA Entity Excluding Coca-Cola FEMSA [Member] | Cross-currency swaps [member] | CLP/USD |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Decrease in exchange rate, as a percent | 13.00% | 11.00% | 10.00%
Effect on profit or loss from decrease in exchange rate | $ (717) | $ (546) | $ (368)
Increase in exchange rate, as a percent | 13.00% | 11.00% | 10.00%
Effect on profit or loss from increase in exchange rate | $ 717 | $ 546 | $ 368
FEMSA Entity Excluding Coca-Cola FEMSA [Member] | Cross-currency swaps [member] | MXN/BRL |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Decrease in exchange rate, as a percent | 19.00% | 13.00% | 15.00%
Effect on profit or loss from decrease in exchange rate | $ (238) | $ (177) | $ (27)
Increase in exchange rate, as a percent | 19.00% | 13.00% | 15.00%
Effect on profit or loss from increase in exchange rate | $ 238 | $ 177 | $ 27
FEMSA Entity Excluding Coca-Cola FEMSA [Member] | Net Cash In Foreign Currency [Member] | EUR/USD |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Decrease in exchange rate, as a percent | 18.00% | 9.00% | 12.00%
Effect on profit or loss from decrease in exchange rate | $ (8,827) | $ (3,833) | $ (8,596)
Increase in exchange rate, as a percent | 18.00% | 9.00% | 12.00%
Effect on profit or loss from increase in exchange rate | $ 8,827 | $ 3,833 | $ 8,596
Coca-Cola FEMSA [member] | Cross-currency swaps [member] | BRL/USD |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Decrease in exchange rate, as a percent | 21.00% | 13.00% | 16.00%
Effect on equity from decrease in exchange rate | $ (2,161) | $ (645) | $ (9,068)
Increase in exchange rate, as a percent | 21.00% | 13.00% | 16.00%
Effect on equity from increase in exchange rate | $ 2,161 | $ 645 | $ 9,068
Coca-Cola FEMSA [member] | Cross-currency swaps [member] | MXN/USD |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Decrease in exchange rate, as a percent | 19.00% | 9.00% | 13.00%
Effect on equity from decrease in exchange rate | $ (5,507) | $ (2,315) | $ (3,130)
Increase in exchange rate, as a percent | 19.00% | 9.00% | 13.00%
Effect on equity from increase in exchange rate | $ 5,507 | $ 2,315 | $ 3,130
Coca-Cola FEMSA [member] | Net Cash In Foreign Currency [Member] | USD |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Decrease in exchange rate, as a percent | 18.00% | 8.00% | 13.00%
Effect on profit or loss from decrease in exchange rate | $ (5,755) | $ (940) | $ (1,868)
Increase in exchange rate, as a percent | 18.00% | 8.00% | 13.00%
Effect on profit or loss from increase in exchange rate | $ 5,755 | $ 940 | $ 1,868
Commodity price risk [member] | Coca-Cola FEMSA [member] | Commodity price contracts [Member] | Sugar Price Contracts [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Change in commodity price, as a percent | 32.00% | 24.00% | 30.00%
Effect on equity from change in commodity price | $ (515) | $ (255) | $ (341)
Commodity price risk [member] | Coca-Cola FEMSA [member] | Commodity price contracts [Member] | Aluminum price contracts [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Change in commodity price, as a percent | 16.00% | 15.00% | 22.00%
Effect on equity from change in commodity price | $ (289) | $ (1,164) | $ (55)
Foreign currency risk [member] | FEMSA Entity Excluding Coca-Cola FEMSA [Member] | Foreign exchange forward contracts [member] | MXN/EUR |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Decrease in exchange rate, as a percent | 19.00% | (9.00%) | (12.00%)
Effect on equity from decrease in exchange rate | $ (327) | $ (57) | $ (116)
Increase in exchange rate, as a percent | 19.00% | 9.00% | 12.00%
Effect on equity from increase in exchange rate | $ 327 | $ 57 | $ 116
Foreign currency risk [member] | FEMSA Entity Excluding Coca-Cola FEMSA [Member] | Foreign exchange forward contracts [member] | BRL/USD |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Decrease in exchange rate, as a percent | 21.00% | (13.00%) |
Effect on equity from decrease in exchange rate | $ (240) | $ (202) |
Increase in exchange rate, as a percent | 21.00% | 13.00% |
Effect on equity from increase in exchange rate | $ 240 | $ 202 |
Foreign currency risk [member] | Coca-Cola FEMSA [member] | Foreign exchange forward contracts [member] | BRL/USD |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Decrease in exchange rate, as a percent | (21.00%) | (13.00%) | (16.00%)
Effect on equity from decrease in exchange rate | $ (357) | $ (155) | $ (413)
Increase in exchange rate, as a percent | 21.00% | 13.00% | 16.00%
Effect on equity from increase in exchange rate | $ 357 | $ 155 | $ 413
Foreign currency risk [member] | Coca-Cola FEMSA [member] | Foreign exchange forward contracts [member] | MXN/USD |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Decrease in exchange rate, as a percent | (19.00%) | (9.00%) | (13.00%)
Effect on equity from decrease in exchange rate | $ (884) | $ (739) | $ (668)
Increase in exchange rate, as a percent | 19.00% | 9.00% | 13.00%
Effect on equity from increase in exchange rate | $ 884 | $ 739 | $ 668
Foreign currency risk [member] | Coca-Cola FEMSA [member] | Foreign exchange forward contracts [member] | COP/USD |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Decrease in exchange rate, as a percent | (16.00%) | 10.00% | (12.00%)
Effect on equity from decrease in exchange rate | $ (142) | $ (54) | $ (2)
Increase in exchange rate, as a percent | 16.00% | 10.00% | 12.00%
Effect on equity from increase in exchange rate | $ 142 | $ 54 | $ 2
Foreign currency risk [member] | Coca-Cola FEMSA [member] | Foreign exchange forward contracts [member] | URY/USD |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Decrease in exchange rate, as a percent | (9.00%) | (5.00%) | (8.00%)
Effect on equity from decrease in exchange rate | $ (21) | $ (23) | $ (46)
Increase in exchange rate, as a percent | 9.00% | 5.00% | 8.00%
Effect on equity from increase in exchange rate | $ 21 | $ 23 | $ 46
Foreign currency risk [member] | Coca-Cola FEMSA [member] | Foreign exchange forward contracts [member] | ARS/USD |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Decrease in exchange rate, as a percent | (2.00%) | (25.00%) | (27.00%)
Effect on equity from decrease in exchange rate | $ (2) | $ (88) | $ (522)
Increase in exchange rate, as a percent | 2.00% | 25.00% | 27.00%
Effect on equity from increase in exchange rate | $ 2 | $ 88 | $ 522

X
- Definition Change in commodity price fluctuation percentage. + References No definition available. + Details
Name: | fmx_ChangeInCommodityPriceFluctuationPercentage
Namespace Prefix: | fmx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Effect on equity from change in commodity price. + References No definition available. + Details
Name: | fmx_ChangeInCommodityPriceFluctuationRateEffectOnEquity
Namespace Prefix: | fmx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Decrease in foreign currency exchange rate percentage. + References No definition available. + Details
Name: | fmx_DecreaseInForeignCurrencyExchangeRatePercentage
Namespace Prefix: | fmx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Effect on equity from decrease in foreign currency exchange rate. + References No definition available. + Details
Name: | fmx_DecreaseInForeignCurrencyRateEffectOnEquity
Namespace Prefix: | fmx_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Effect on profit or loss from decrease in foreign currency exchange rate. + References No definition available. + Details
Name: | fmx_DecreaseInForeignCurrencyRateEffectOnProfitOrLoss
Namespace Prefix: | fmx_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Increase in foreign currency exchange rate percentage. + References No definition available. + Details
Name: | fmx_IncreaseInForeignCurrencyExchangeRatePercentage
Namespace Prefix: | fmx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Effect on equity from increase in foreign currency exchange rate. + References No definition available. + Details
Name: | fmx_IncreaseInForeignCurrencyRateEffectOnEquity
Namespace Prefix: | fmx_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Effect on profit or loss from increase in foreign currency exchange rate. + References No definition available. + Details
Name: | fmx_IncreaseInForeignCurrencyRateEffectOnProfitOrLoss
Namespace Prefix: | fmx_
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_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_SignificantInvestmentsInSubsidiariesAxis=fmx_FemsaEntityExcludingCocaColaFemsaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=ifrs-full_CurrencySwapContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=fmx_CurrencyExchangeMexicanPesoAndUsDollarMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=fmx_CurrencyExchangeColombianPesoAndUsDollarMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=fmx_CurrencyExchangeChileanPesoAndUsDollarMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=fmx_CurrencyExchangeMexicanPesoAndBrazilianRealMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=fmx_NetCashInForeignCurrencyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=fmx_CurrencyExchangeEuroAndUsDollarMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SignificantInvestmentsInSubsidiariesAxis=fmx_CocaColaFEMSAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=fmx_CurrencyExchangeBrazilianRealAndUsDollarMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=currency_USD
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfRisksAxis=ifrs-full_CommodityPriceRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=fmx_CommodityContract1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgedItemsAxis=fmx_SugarPriceContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgedItemsAxis=fmx_AluminiumPriceContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfRisksAxis=ifrs-full_CurrencyRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=ifrs-full_ForwardContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=fmx_CurrencyExchangeMexicanPesoAndEuroMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=fmx_CurrencyExchangeUruguayanPesoAndUsDollarMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=fmx_CurrencyExchangeArgentinePesoAndUsDollarMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |