XML 168 R132.htm IDEA: XBRL DOCUMENT v3.19.1

Segments - Additional Information (Detail) - Operating segments [member]	12 Months Ended
	Dec. 31, 2018
Disclosure of Operating Segments [Line Items]
Percentage of entity revenue	10.00%
Percentage of taxable profit	10.00%
Percentage of consolidated assets	10.00%

X

- Definition

Percentage of consolidated assets.

+ References

No definition available.

+ Details

Name:	amx_PercentageOfConsolidatedAssets
Namespace Prefix:	amx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of taxable profit.

+ References

No definition available.

+ Details

Name:	amx_PercentageOfTaxableProfit
Namespace Prefix:	amx_
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_DisclosureOfOperatingSegmentsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The percentage of the entity's revenue. [Refer: Revenue]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 8
-IssueDate 2018-01-01
-Paragraph 34
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=8&date=2018-03-01&anchor=para_34&doctype=Standard
-URIDate 2018-03-16

+ Details

Name:	ifrs-full_PercentageOfEntitysRevenue
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_SegmentConsolidationItemsAxis=ifrs-full_OperatingSegmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: