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Related Parties (Tables) | 12 Months Ended
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Dec. 31, 2019
Text block [abstract] |
Summary of Analysis of the Balances with Related Parties | a) The following is an analysis of the balances with related parties as of December 31, 2018 and 2019. All of the companies were considered affiliates of América Móvil since the Company’s principal shareholders are either direct or indirect shareholders in the related parties.
|  | 2018 |  |  | 2019 |
Accounts receivable: |  |  |  |  |  |  |  |
Sears Roebuck de México, S.A. de C.V. and Subsidiaries. |  | Ps. | 284,917 |  |  | Ps. | 228,523 |
Sanborns Hermanos, S.A. |  |  | 336,134 |  |  |  | 229,964 |
Patrimonial Inbursa, S.A. |  |  | 261,754 |  |  |  | 386,194 |
Carso Infraestructura y Construcción, S.A. de C.V. and Subsidiaries |  |  | 179,852 |  |  |  | 41,204 |
Grupo Condumex, S.A. de C.V. and Subsidiaries |  |  | 35,007 |  |  |  | 12,018 |
Hiubard y Bourlon, S.A. de C.V. |  |  | 5,983 |  |  |  | 172,952 |
Claroshop.com, S.A.P.I. de C.V. |  |  | 29,219 |  |  |  | 91,874 |
Other |  |  | 130,739 |  |  |  | 110,411 |
Total |  | Ps. | 1,263,605 |  |  | Ps. | 1,273,140 |
|  | 2018 |  |  | 2019 |
Accounts payable: |  |  |  |  |  |  |  |
Carso Infraestructura y Construcción, S.A. de C.V. and Subsidiaries |  | Ps. | 1,403,414 |  |  | Ps. | 1,656,123 |
Grupo Condumex, S.A. de C.V. and Subsidiaries |  |  | 784,678 |  |  |  | 905,776 |
Grupo Financiero Inbursa, S.A.B. de C.V. |  |  | 235,745 |  |  |  | 246,804 |
Fianzas Guardiana Inbursa, S.A. de C.V. |  |  | 227,014 |  |  |  | 241,305 |
PC Industrial, S.A. de C.V. and Subsidiaries |  |  | 83,502 |  |  |  | 68,189 |
Enesa, S.A. de C.V. and Subsidiaries |  |  | 22,630 |  |  |  | 25,076 |
Other |  |  | 217,230 |  |  |  | 317,146 |
Total |  | Ps. | 2,974,213 |  |  | Ps. | 3,460,419 |
Summary of Transactions with Related Parties | b) For the years ended December 31, 2017, 2018 and 2019, the Company conducted the following transactions with related parties:
|  | 2017 |  |  | 2018 |  |  | 2019 |
Investments and expenses: |  |  |  |  |  |  |  |  |  |  |  |
Construction services, purchases of materials, inventories and property, plant and equipment (i) |  | Ps. | 11,030,944 |  |  | Ps. | 7,211,960 |  |  | Ps. | 8,573,894 |
Insurance premiums, fees paid for administrative and operating services, brokerage services and others (ii) |  |  | 4,135,578 |  |  |  | 4,134,380 |  |  |  | 4,590,620 |
Rent of towers (iii) |  |  | 5,326,366 |  |  |  | 6,168,592 |  |  |  | — |
Other services |  |  | 2,802,667 |  |  |  | 1,864,017 |  |  |  | 1,277,404 |
|  | Ps. | 23,295,555 |  |  | Ps. | 19,378,949 |  |  | Ps. | 14,441,918 |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |
Service revenues |  | Ps. | 416,047 |  |  | Ps. | 679,220 |  |  | Ps. | 538,110 |
Sales of equipment |  |  | 2,313,840 |  |  |  | 1,296,204 |  |  |  | 944,697 |
|  | Ps. | 2,729,887 |  |  | Ps. | 1,975,424 |  |  | Ps. | 1,482,807 |
i) | In 2019, this amount includes Ps.6,809,244 (Ps. 5,622,791 in 2018 and Ps. 9,829,991 in 2017) for network construction services and construction materials purchased from subsidiaries of Grupo Carso, S.A.B. de C.V. (Grupo Carso).
ii) | In 2019, this amount includes Ps. 956,132 (Ps. 778,191 in 2018 and Ps. 789,253 in 2017) for network maintenance services performed by Grupo Carso subsidiaries; Ps. 16,161 in 2019 (Ps. 13,784 in 2018, and Ps. 15,695 in 2017) for software services provided by an associate; Ps. 2,623,795 in 2019 (Ps. 2,541,703 in 2018 and Ps. 3,330,038 in 2017) for insurance premiums with Seguros Inbursa S.A. and Fianzas Guardiana Inbursa, S.A., which, in turn, places most of such insurance with reinsurers.
iii) | Due to the implementation of IFRS 16 amounts related to payments for tower leases are no longer considered rental expenses.

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