Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices, Taxes (Details) - MXN ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices [Abstract]
Deferred taxes related to unremitted foreign earnings	$ 0	$ 0

A deferred tax liability in respect of temporary differences arising because foreign income is not taxable unless remitted to the entity's home jurisdiction.

No definition available.

Name:	amx_DeferredTaxesRelatedToUnremittedForeignEarnings
Namespace Prefix:	amx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant