XML 172 R152.htm IDEA: XBRL DOCUMENT v3.21.1

Equity - Summary of Capital Stock (Detail) - MXN ($) $ in Millions	Nov. 05, 2020	Nov. 03, 2020	Aug. 20, 2020	May 05, 2020	Nov. 05, 2019	Nov. 01, 2019	May 07, 2019	May 03, 2019	Nov. 06, 2018	Nov. 01, 2018	May 04, 2018	May 03, 2018	Dec. 31, 2020	Mar. 20, 2020	Mar. 17, 2020	Dec. 31, 2019	Mar. 22, 2019	Mar. 14, 2019	Mar. 16, 2018	Mar. 09, 2018
Disclosure of classes of share capital [line items]
Number of units													3,578,226,270
Series "B"													9,246,420,270
Series "D"													8,644,711,080
Subseries "D-B"													4,322,355,540
Subseries "D-L"													4,322,355,540
Total shares													17,891,131,350			17,891,131,350
Total CUFIN balance amount													$ 237,627
Statutory reserve													$ 596			$ 596
B units [member]
Disclosure of classes of share capital [line items]
Number of units													1,417,048,500
Series "B"													7,085,242,500
Total shares													7,085,242,500
BD units [member]
Disclosure of classes of share capital [line items]
Number of units													2,161,177,770
Series "B"													2,161,177,770
Series "D"													8,644,711,080
Subseries "D-B"													4,322,355,540
Subseries "D-L"													4,322,355,540
Total shares													10,805,888,850
Ordinary shares [member]
Disclosure of classes of share capital [line items]
Dividend approved to be paid														$ 10,360			$ 9,692		$ 9,220
Percentage of dividend paid			50.00%	50.00%			50.00%	50.00%			50.00%	50.00%
Maximum reserve for share purchase	$ 17,000				$ 7,000				$ 7,000
Ordinary shares [member] | Non-controlling interest [member]
Disclosure of classes of share capital [line items]
Dividend approved to be paid		$ 5,389				$ 3,925				$ 3,713
Coca-Cola FEMSA [member] | Ordinary shares [member]
Disclosure of classes of share capital [line items]
Dividend approved to be paid															$ 10,210			$ 7,437		$ 7,038
Percentage of dividend paid	50.00%	50.00%			50.00%	50.00%			50.00%	50.00%

X

- Definition

Maximum reserve for share purchase.

+ References

No definition available.

+ Details

Name:	fmx_MaximumReserveForSharePurchase
Namespace Prefix:	fmx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Net taxable income, denominated "Cuenta de utilidad Fiscal Neta" (CUFIN") balance.

+ References

No definition available.

+ Details

Name:	fmx_NetTaxableIncomeDenominatedBalance
Namespace Prefix:	fmx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Number of series B shares issued.

+ References

No definition available.

+ Details

Name:	fmx_NumberOfSeriesBSharesIssued
Namespace Prefix:	fmx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of series D-B shares issued.

+ References

No definition available.

+ Details

Name:	fmx_NumberOfSeriesDBSharesIssued
Namespace Prefix:	fmx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of series D-L shares issued.

+ References

No definition available.

+ Details

Name:	fmx_NumberOfSeriesDLSharesIssued
Namespace Prefix:	fmx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of series D shares issued.

+ References

No definition available.

+ Details

Name:	fmx_NumberOfSeriesDSharesIssued
Namespace Prefix:	fmx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Percentage of dividend paid.

+ References

No definition available.

+ Details

Name:	fmx_PercentageOfDividendPaid
Namespace Prefix:	fmx_
Data Type:	num:percentItemType
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_DisclosureOfClassesOfShareCapitalLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of dividends that the company has declared but not yet paid.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_DividendPayables
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The number of shares issued by the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 106
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_106_d&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_NumberOfSharesIssued
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 79
-Subparagraph a
-Clause iv
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_79_a_iv&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_NumberOfSharesOutstanding
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

A component of equity representing reserves created based on legal requirements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_StatutoryReserve
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	ifrs-full_ComponentsOfEquityAxis=fmx_BUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ComponentsOfEquityAxis=fmx_BDUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfShareCapitalAxis=ifrs-full_OrdinarySharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ComponentsOfEquityAxis=ifrs-full_NoncontrollingInterestsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CategoriesOfRelatedPartiesAxis=fmx_CocaColaFEMSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: