XML 196 R130.htm IDEA: XBRL DOCUMENT v3.20.1

Subsequent Events - Additional Information (Detail) $ in Thousands, $ in Billions				12 Months Ended
	Apr. 09, 2020 EUR (€)	Mar. 25, 2020 USD ($)	Mar. 25, 2020 EUR (€)	Dec. 31, 2019 MXN ($)	Dec. 31, 2018 MXN ($)	Dec. 31, 2017 MXN ($)
Disclosure of non-adjusting events after reporting period [line items]
Proceeds From Credit Facility				$ 8,273,440	$ (34,050,923)	$ (27,433,489)
Borrowings				624,254,477	638,922,453
U.S. dollars [member]
Disclosure of non-adjusting events after reporting period [line items]
Borrowings				169,142,643	184,089,282
Euros [member]
Disclosure of non-adjusting events after reporting period [line items]
Borrowings				$ 222,190,375	$ 236,548,891
Major borrowings [member] | U.S. dollars [member] | Revolving Syndicated Credit Facility One [member]
Disclosure of non-adjusting events after reporting period [line items]
Proceeds From Credit Facility		$ 2.5
Major borrowings [member] | Euros [member]
Disclosure of non-adjusting events after reporting period [line items]
Repayments of bonds | €	€ 1,318,200
Borrowings | €	€ 1,607,300
Major borrowings [member] | Euros [member] | Revolving Syndicated Credit Facility One [member]
Disclosure of non-adjusting events after reporting period [line items]
Proceeds From Credit Facility | €			€ 2,000,000,000

X

- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_55&doctype=Standard
-URIDate 2019-03-27

+ Details

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

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

- Definition

The cash inflow from borrowings obtained. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 7
-IssueDate 2019-01-01
-Paragraph 17
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_17_c&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The cash outflow for repayments of bonds, notes and debentures.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2019-01-01
-Paragraph 17
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_17&doctype=Standard
-URIDate 2019-03-27

+ Details

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

X

- Details

Name:	srt_CurrencyAxis=currency_USD
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CurrencyAxis=currency_EUR
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=amx_SyndicatedCreditFacilityOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: