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Investments in Associates and Joint Ventures - Equity method (Details) - MXN ($) $ in Thousands |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Dec. 28, 2020 | Feb. 25, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2017
Investments in associates and joint ventures |  |  |  |  |  |
Investments in associates and joint ventures |  |  | $ 22,813,531 | $ 9,762,432 | $ 10,546,728 |
Investment in intangible assets and goodwill |  |  | $ 42,724,218 | $ 43,328,954 |  |
UHI |  |  |  |  |  |
Investments in associates and joint ventures |  |  |  |  |  |
Ownership interest in associate | 10.00% |  | 35.90% | 10.00% |  |
Percentage warrants if exercised on a fully diluted as converted basis |  | 36.00% |  |  |  |
Investments in associates and joint ventures |  |  | $ 21,424,180 | $ 8,189,662 |  |
OCEN and subsidiaries |  |  |  |  |  |
Investments in associates and joint ventures |  |  |  |  |  |
Ownership interest in associate |  |  | 40.00% |  |  |
Investments in associates and joint ventures |  |  | $ 556,251 | 693,970 |  |
Other |  |  |  |  |  |
Investments in associates and joint ventures |  |  |  |  |  |
Investments in associates and joint ventures |  |  | $ 113,905 | 115,161 |  |
Grupo de Telecomunicaciones de Alta Capacidad, S.A.P.I. de C.V. and subsidiaries ("GTAC") |  |  |  |  |  |
Investments in associates and joint ventures |  |  |  |  |  |
Ownership interest in joint venture |  |  | 33.30% |  |  |
Investments in associates and joint ventures |  |  | $ 514,731 | 567,165 |  |
Periodico Digital Sendero, S.A. P.I. de C.V. and subsidiary ("PDS") |  |  |  |  |  |
Investments in associates and joint ventures |  |  |  |  |  |
Ownership interest in joint venture |  |  | 50.00% |  |  |
Investments in associates and joint ventures |  |  | $ 204,464 | 196,474 |  |
Fair value of total consideration |  |  |  |  |  | $ 81,749
Investment in intangible assets and goodwill |  |  | $ 113,837 | $ 113,837 |  |

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- Definition The amount of investments accounted for using the equity method. The equity method is a method of accounting whereby the investment is initially recognised at cost and adjusted thereafter for the post-acquisition change in the investor's share of net assets of the investee. The investor's profit or loss includes its share of the profit or loss of the investee. The investor's other comprehensive income includes its share of the other comprehensive income of the investee. [Refer: At cost [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2020-01-01 -Paragraph 24 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2020-en-r&anchor=para_24_a&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2020-01-01 -Paragraph B16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_B16&doctype=Appendix&subtype=B -URIDate 2020-01-01 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 54 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_54_e&doctype=Standard -URIDate 2020-01-01 + Details
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