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Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Summary of Equity Interest in Most Significant Subsidiaries (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Netherlands [member] | America Movil B. V. [member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 100.00% | 100.00%
Mexico [member] | Sercotel, S.A. de C.V. [member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 100.00% | 100.00%
Mexico [member] | Radiomovil Dipsa, S.A. de C.V. and subsidiaries (Telcel) [member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 100.00% | 100.00%
Mexico [member] | AMX International Mobile S A de C V [Member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 100.00% | 0.00%
Mexico [member] | Telefonos de Mexico S.A.B. de C.V [member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 98.80% | 98.80%
Dominican Republic [member] | Compania Dominicana De Telefonos S.A. (Codetel) [member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 100.00% | 100.00%
Puerto Rico [member] | Puerto Rico Telephone Company Inc [member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 100.00% | 100.00%
Honduras [member] | Servicios de Comunicaciones de Honduras, S.A. de C.V.(Sercom Honduras) [member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 100.00% | 100.00%
Brazil [member] | Claro S.A. (Claro Brasil) [member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 99.60% | 99.60%
Brazil [member] | Claro NXT Telecomunicaes SA [Member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 100.00% | 100.00%
Guatemala [member] | Telecomunicaciones de Guatemala, S.A. (Telgua) [member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 99.30% | 99.30%
Guatemala [member] | Claro Guatemala S.A [member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 100.00% | 100.00%
Nicaragua [member] | Empresa Nicaraguense de Telecomunicaciones, S.A. (Enitel) [member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 99.60% | 99.60%
El Salvador [member] | Compania de Telecomunicaciones de El Salvador, S.A. de C.V. (CTE) [member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 95.80% | 95.80%
Colombia [member] | Comunicacion Celular S. A. (Comcel) [member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 99.40% | 99.40%
Ecuador [member] | Consorcio Ecuatoriano de Telecomunicaciones, S.A. (Conecel) [member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 100.00% | 100.00%
Argentina [member] | AMX Argentina, S.A. [member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 100.00% | 100.00%
Paraguay [member] | AMX Paraguay, S.A. [member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 100.00% | 100.00%
Uruguay [member] | AM Wireless Uruguay, S.A.[member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 100.00% | 100.00%
Chile [member] | Claro Chile S A [member] |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in joint venture | 50.00% | 50.00%
Peru [member] | America Movil Peru S.A. C. [member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 100.00% | 100.00%
Austria [member] | Telekom Austria AG [member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 58.40% | 51.00%
Austria [member] | EuroTeleSites AG and Subsidiaries [Member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 57.00% | 0.00%
Luxembourg [member] | NII Brazil Holding SARL [member] |  |
Disclosure of subsidiaries [line items] |  |
Percentage of equity interest | 0.00% | 100.00%

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