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Accounts Payable, Accrued Liabilities and Asset Retirement Obligations - Summary of Movements in Contingent Liabilities (Detail) - MXN ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Disclosure of contingent liabilities [abstract] |  |
Beginning balance | $ 35,850,857 | $ 34,338,518
Effect of translation | (1,738,359) | 1,430,535
Increase of the year | 7,361,456 | 5,236,368
Applications payments | (5,642,088) | (3,864,013)
Applications reversals | (1,476,507) | (1,290,551)
Ending balance | $ 34,355,359 | $ 35,850,857

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- Definition Applications, payments contingent liabilities, current. + References No definition available. + Details
Name: | amx_ApplicationsPaymentsContingentLiabilitiesCurrent
Namespace Prefix: | amx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Applications, reversals contingent liabilities, current. + References No definition available. + Details
Name: | amx_ApplicationsReversalsContingentLiabilitiesCurrent
Namespace Prefix: | amx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Contingent consideration liabilities current. + References No definition available. + Details
Name: | amx_ContingentConsiderationLiabilitiesCurrent
Namespace Prefix: | amx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Effect of exchange rate changes on contingent liabilities, current. + References No definition available. + Details
Name: | amx_EffectOfExchangeRateChangesOnContingentLiabilitiesCurrent
Namespace Prefix: | amx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Increase (decrease) in contingent liabilities during period, current. + References No definition available. + Details
Name: | amx_IncreaseDecreaseInContingentLiabilitiesDuringPeriodCurrent
Namespace Prefix: | amx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | ifrs-full_DisclosureOfContingentLiabilitiesAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration