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Accounting Policies - Subsidiaries (Details) - MXN ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Nov. 30, 2018 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Consolidated subsidiaries information |  |  |  |
Administrative expenses |  | $ 12,713,657 | $ 13,269,191 | $ 13,729,325
Sistema Radiopolis, S.A. de C.V. (Radiopolis) and subsidiaries |  |  |  |
Consolidated subsidiaries information |  |  |  |
Ownership interest in subsidiary sold (as a percent) |  |  | 50.00% | 50.00%
Content and Other Businesses | Grupo Telesistema, S.A. de C.V. and subsidiaries |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 100.00% | 100.00% | 100.00%
Content and Other Businesses | Ulvik, S.A. de C.V. |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 100.00% | 100.00% | 100.00%
Content | Televisa, S.A. de C.V. ("Televisa") |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 100.00% | 100.00% | 100.00%
Content | Television Independiente de Mxico, S.A. de C.V. |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 100.00% | 100.00% | 100.00%
Content | G.Televisa-D, S.A. de C.V. |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 100.00% | 100.00% | 100.00%
Content | Multimedia Telecom, S.A. de C.V. ("Multimedia Telecom") and subsidiary |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 100.00% | 100.00% | 100.00%
Sky | Innova, S. de R.L. de C.V. ("Innova") and subsidiaries (collectively, "Sky") |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 58.70% | 58.70% | 58.70%
Cable and Sky | Corporativo Vasco de Quiroga, S.A. de C.V. ("CVQ") and subsidiaries |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 100.00% | 100.00% | 100.00%
Cable | Empresas Cablevision, S.A.B. de C.V. and subsidiaries (collectively, "Empresas Cablevision") |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 51.20% | 51.20% | 51.20%
Cable | Subsidiaries engaged in the Cablemas business (collectively, "Cablemas") |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 100.00% | 100.00% | 100.00%
Cable | Televisin Internacional, S.A. de C.V. and subsidiaries (collectively, "TVI") |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 100.00% | 100.00% | 100.00%
Cable | Cablestar, S.A. de C.V. and subsidiaries (collectively, "Bestel") |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 66.20% | 66.20% | 66.20%
Cable | Arretis, S.A.P.I. de C.V. and subsidiaries (collectively, "Cablecom") |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 100.00% | 100.00% | 100.00%
Cable | Subsidiaries engaged in the Telecable business (collectively, "Telecable") |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 100.00% | 100.00% | 100.00%
Cable | FTTH de Mxico, S.A. de C.V. |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 100.00% | 100.00% | 100.00%
Other Businesses | Controladora de Juegos y Sorteos de Mxico, S.A. de C.V. and subsidiaries |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 100.00% | 100.00% | 100.00%
Other Businesses | Editorial Televisa, S.A. de C.V. and subsidiaries |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 100.00% | 100.00% | 100.00%
Other Businesses | Grupo Distribuidoras Intermex, S.A. de C.V. and subsidiaries |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 100.00% | 100.00% | 100.00%
Other Businesses | Villacezan, S.A. de C.V. ("Villacezan") and subsidiaries |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 100.00% | 100.00% | 100.00%
Broadcasting concessions |  |  |  |
Consolidated subsidiaries information |  |  |  |
Renewal cost for concession | $ 5,754,543 |  |  |
Administrative expenses | $ 1,194 |  |  |
Useful lives | 20 years |  |  |
Common shares | Content | Multimedia Telecom, S.A. de C.V. ("Multimedia Telecom") and subsidiary |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 95.30% |  |
Common shares | Content | Comunicaciones Tieren, S.A. de C.V. ("Tieren") |  |  |  |
Consolidated subsidiaries information |  |  |  |
Company's ownership interest |  | 4.70% |  |

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