XML 211 R130.htm IDEA: XBRL DOCUMENT v3.8.0.1

Subsequent Events - Additional Information (Detail) - EUR (€) € in Millions	Mar. 05, 2018	Jan. 03, 2018
Hybrid Bonds [member]
Disclosure of non-adjusting events after reporting period [line items]
Redemption of hybrid bond		€ 600
Federal Telecommunications Institute [member]
Disclosure of non-adjusting events after reporting period [line items]
Implementation period	2 years

X

- Definition

Implementation period.

+ References

No definition available.

+ Details

Name:	amx_ImplementationPeriod
Namespace Prefix:	amx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Redemption of hybrid bond

+ References

No definition available.

+ Details

Name:	amx_RedemptionOfHybridBond
Namespace Prefix:	amx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_NonadjustingEventsAfterReportingPeriodAxis=amx_HybridBondsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_NonadjustingEventsAfterReportingPeriodAxis=amx_FederalTelecommunicationsInstituteMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: