XML 163 R148.htm IDEA: XBRL DOCUMENT v3.8.0.1

Financial Instruments - Disclosure of Net Effect of Changes in Fair Value of Derivative Financial Instruments Did Not Meet Hedging Criteria for Accounting Purposes (Detail) - Derivative financial instruments did not meet hedging criteria [member] - Market value gain on financial instruments [member] $ in Millions	12 Months Ended
	Dec. 31, 2015 MXN ($)
Cross-currency swaps [member]
Disclosure of detailed information about hedges [line items]
Net effects derivative contracts hedging criteria	$ (20)
Other Contracts [Member]
Disclosure of detailed information about hedges [line items]
Net effects derivative contracts hedging criteria	$ 56

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

X

- Definition

The gains (losses) resulting from change in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 85
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_85&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=fmx_DerivativeContractNotMetHedgingCriteriaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfFinancialInstrumentsAxis=ifrs-full_CurrencySwapContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeStatementLocationAxis=fmx_UnrealisedGainLossesOnDerivativeFinancialInstrumentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfFinancialInstrumentsAxis=fmx_OtherContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: