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Employee Benefits - Summary of Long-Term Direct Employee Benefits (Detail) - MXN ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Disclosure of long term direct employee benefits [abstract] |  |
Beginning balance | $ 6,403,752 | $ 7,925,846
Effect of translation | (647,033) | (879,484)
Increase of the year | 1,608,275 | 1,376,566
Applications, Payments | (1,975,199) | (2,019,176)
Ending balance | $ 5,389,795 | $ 6,403,752

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- Definition Disclosure of long term direct employee benefits. + References No definition available. + Details
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Namespace Prefix: | amx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Long term direct employee benefits + References No definition available. + Details
Name: | amx_LongTermDirectEmployeeBenefits
Namespace Prefix: | amx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Long term direct employee benefits decrease effect due to payments. + References No definition available. + Details
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Namespace Prefix: | amx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Long term direct employee benefits effect of translation adjustments. + References No definition available. + Details
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Namespace Prefix: | amx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Long term direct employee benefits Increase effect. + References No definition available. + Details
Name: | amx_LongTermDirectEmployeeBenefitsIncreaseEffect
Namespace Prefix: | amx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration