XML 193 R178.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Other Liabilities, Provisions, Contingencies and Commitments - Schedule of Contractual Maturities of the Operating Lease Commitments (Detail) $ in Millions | Dec. 31, 2017 MXN ($)
--- | ---
Mexican pesos [Member] |
Disclosure of financial liabilities [line items] |
Contractual maturities of operating lease commitments | $ 57,782
U.S. dollars [member] |
Disclosure of financial liabilities [line items] |
Contractual maturities of operating lease commitments | 3,851
Other currencies [member] |
Disclosure of financial liabilities [line items] |
Contractual maturities of operating lease commitments | 38,030
Less than 1 year [member] | Mexican pesos [Member] |
Disclosure of financial liabilities [line items] |
Contractual maturities of operating lease commitments | 6,553
Less than 1 year [member] | U.S. dollars [member] |
Disclosure of financial liabilities [line items] |
Contractual maturities of operating lease commitments | 426
Less than 1 year [member] | Other currencies [member] |
Disclosure of financial liabilities [line items] |
Contractual maturities of operating lease commitments | 5,700
1-5 years [Member] | Mexican pesos [Member] |
Disclosure of financial liabilities [line items] |
Contractual maturities of operating lease commitments | 21,922
1-5 years [Member] | U.S. dollars [member] |
Disclosure of financial liabilities [line items] |
Contractual maturities of operating lease commitments | 3,145
1-5 years [Member] | Other currencies [member] |
Disclosure of financial liabilities [line items] |
Contractual maturities of operating lease commitments | 22,104
Later than 5 years [member] | Mexican pesos [Member] |
Disclosure of financial liabilities [line items] |
Contractual maturities of operating lease commitments | 29,307
Later than 5 years [member] | U.S. dollars [member] |
Disclosure of financial liabilities [line items] |
Contractual maturities of operating lease commitments | 280
Later than 5 years [member] | Other currencies [member] |
Disclosure of financial liabilities [line items] |
Contractual maturities of operating lease commitments | $ 10,226

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_DisclosureOfFinancialLiabilitiesLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of undiscounted operating lease payments to be received. Operating lease is a lease that does not transfer substantially all the risks and rewards incidental to ownership of an underlying asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2019-01-01 -Name IFRS -Number 16 -IssueDate 2017-01-01 -Paragraph 97 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=16&date=2017-03-01&anchor=para_97&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_UndiscountedOperatingLeasePaymentsToBeReceived
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_CurrencyAxis=fmx_MexicanPesosMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CurrencyAxis=fmx_USDollarMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CurrencyAxis=fmx_OtherCurrenciesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_NotLaterThanOneYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanOneYearAndNotLaterThanFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |