XML 143 R107.htm IDEA: XBRL DOCUMENT
v3.19.1

Debt - Summary of Senior Notes Outstanding (Detail) - MXN ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Disclosure of Senior Notes Outstanding [Line Items] |  |
Borrowings | $ 638,922,453 | $ 697,884,899
U.S. dollars [member] |  |
Disclosure of Senior Notes Outstanding [Line Items] |  |
Borrowings | 184,089,282 | 185,060,098
Mexican pesos [member] |  |
Disclosure of Senior Notes Outstanding [Line Items] |  |
Borrowings | 68,001,125 | 70,691,683
Euros [member] |  |
Disclosure of Senior Notes Outstanding [Line Items] |  |
Borrowings | 236,548,891 | 263,998,076
Pound sterling [member] |  |
Disclosure of Senior Notes Outstanding [Line Items] |  |
Borrowings | 55,223,526 | 58,823,089
Swiss francs [,ember] |  |
Disclosure of Senior Notes Outstanding [Line Items] |  |
Borrowings |  | 11,169,748
Japanese yens [member] |  |
Disclosure of Senior Notes Outstanding [Line Items] |  |
Borrowings | 2,334,864 | 2,282,608
Brazilian reals [member] |  |
Disclosure of Senior Notes Outstanding [Line Items] |  |
Borrowings | 32,891,187 | 20,935,142
Chilean pesos [member] |  |
Disclosure of Senior Notes Outstanding [Line Items] |  |
Borrowings | 3,904,707 | 4,312,424
Senior Notes 1 [member] | U.S. dollars [member] |  |
Disclosure of Senior Notes Outstanding [Line Items] |  |
Borrowings | 184,089,282 | 185,060,098
Senior Notes 1 [member] | Mexican pesos [member] |  |
Disclosure of Senior Notes Outstanding [Line Items] |  |
Borrowings | 68,001,125 | 70,691,683
Senior Notes 1 [member] | Euros [member] |  |
Disclosure of Senior Notes Outstanding [Line Items] |  |
Borrowings | 236,548,891 | 263,998,076
Senior Notes 1 [member] | Pound sterling [member] |  |
Disclosure of Senior Notes Outstanding [Line Items] |  |
Borrowings | 55,223,526 | 58,823,089
Senior Notes 1 [member] | Swiss francs [,ember] |  |
Disclosure of Senior Notes Outstanding [Line Items] |  |
Borrowings |  | 11,169,748
Senior Notes 1 [member] | Japanese yens [member] |  |
Disclosure of Senior Notes Outstanding [Line Items] |  |
Borrowings | 2,334,864 | 2,282,608
Senior Notes 1 [member] | Brazilian reals [member] |  |
Disclosure of Senior Notes Outstanding [Line Items] |  |
Borrowings | 32,891,187 | 20,935,142
Senior Notes 1 [member] | Chilean pesos [member] |  |
Disclosure of Senior Notes Outstanding [Line Items] |  |
Borrowings | $ 3,904,707 | $ 4,312,424

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: | amx_DisclosureOfSeniorNotesOutstandingLineItems
Namespace Prefix: | amx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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 2018-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_55&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_Borrowings
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | srt_CurrencyAxis=currency_USD
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=currency_MXN
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: | srt_CurrencyAxis=currency_GBP
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=currency_CHF
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=currency_JPY
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=currency_BRL
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=currency_CLP
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=amx_SeniorNotes1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |