XML 181 R134.htm IDEA: XBRL DOCUMENT
v3.25.1

Bonus Programs - Summary of Number of Shares Held by the Trust (Details) - shares | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
FEMSA UBD |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Number of other equity instruments outstanding in share-based payment arrangement at beginning of period (in shares) | 7,283,198 | 5,723,019
Shares acquired by the administrative trust to employees (in shares) | 2,768,091 | 4,844,120
Number of other equity instruments exercised or vested in share-based payment arrangement | (3,843,052) | (3,283,941)
Number of other equity instruments outstanding in share-based payment arrangement at end of period (in shares) | 6,208,237 | 7,283,198
KOFL UBL |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Number of other equity instruments outstanding in share-based payment arrangement at beginning of period (in shares) | 1,904,240 | 1,860,379
Shares acquired by the administrative trust to employees (in shares) | 904,246 | 1,139,180
Number of other equity instruments exercised or vested in share-based payment arrangement | (933,835) | (1,095,319)
Number of other equity instruments outstanding in share-based payment arrangement at end of period (in shares) | 1,874,651 | 1,904,240

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

X
- Definition The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2024-01-01 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_45&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2024-01-01 -Paragraph 47 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_47_b&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of other equity instruments (ie other than share options) exercised or vested in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2024-01-01 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_45&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of other equity instruments (ie other than share options) outstanding in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2024-01-01 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_45&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | dei_LegalEntityAxis=fmx_FEMSAUBDMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=fmx_KOFLUBLMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |