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Investments in Associates and Joint Ventures - Associate Narrative (Details) $ in Thousands, € in Millions, $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended
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Aug. 31, 2015 | Jul. 31, 2015 EUR (€) | Jul. 31, 2015 USD ($) | Jul. 31, 2015 MXN ($) | Jun. 30, 2015 | Sep. 30, 2015 MXN ($) item | Dec. 31, 2017 MXN ($) director item shares | Dec. 31, 2016 MXN ($) director item shares | Dec. 31, 2015 MXN ($)
Disclosure of associates |  |  |  |  |  |  |  |  |
Reclassification of cumulative gain related to change in fair value of investment |  |  |  |  |  |  |  |  | $ 544,402
Income from UHI |  |  |  |  |  |  |  |  | $ 2,194,981
Ocesa Entretenimiento, S.A. de C.V. and subsidiaries (collectively, "OCEN") |  |  |  |  |  |  |  |  |
Disclosure of associates |  |  |  |  |  |  |  |  |
Dividends paid |  |  |  |  |  |  | $ 340,000 | $ 215,000 |
UHI |  |  |  |  |  |  |  |  |
Disclosure of associates |  |  |  |  |  |  |  |  |
Number of shares owned | shares |  |  |  |  |  |  | 1,110,382 | 1,110,382 |
Ownership interest in associate |  | 10.00% | 10.00% | 10.00% | 7.80% |  | 10.00% | 10.00% |
Ownership interest after dilution of warrants exercisable |  |  |  |  |  |  | 26.00% | 26.00% |
Number of officers designated as members of board of directors | item |  |  |  |  |  |  | 3 | 3 |
Number of directors designated as members of board of directors | director |  |  |  |  |  |  | 1 | 1 |
Total number of seats held by directors | director |  |  |  |  |  |  | 18 | 18 |
Number of available board seats | item |  |  |  |  |  |  | 22 | 22 |
Threshold period to broadcast after proportionate sale of initial investment In associate |  |  |  |  |  |  | 7 months 15 days |  |
Proportionate sale of initial investment in associate |  |  |  |  |  |  | 0.667 |  |
Income from UHI |  |  | $ 135.1 | $ 2,194,981 |  |  |  |  |
Imagina |  |  |  |  |  |  |  |  |
Disclosure of associates |  |  |  |  |  |  |  |  |
Ownership interest in associate | 19.90% | 19.90% | 19.90% | 19.90% | 14.50% |  | 19.90% |  |
Number board seats held by entity | item |  |  |  |  |  | 2 |  |  |
Number of available board seats | item |  |  |  |  |  | 10 |  |  |
Cash consideration of investments accounted for using equity method |  | € 19.2 |  | $ 341,710 |  |  |  |  |
Reclassification of cumulative gain related to change in fair value of investment |  |  |  |  |  | $ 544,402 |  |  |
Ocesa Entretenimiento, S.A. de C.V. and subsidiaries (collectively, "OCEN") |  |  |  |  |  |  |  |  |
Disclosure of associates |  |  |  |  |  |  |  |  |
Ownership interest in associate |  |  |  |  |  |  | 40.00% |  |
Dividends received from associates |  |  |  |  |  |  | $ 136,000 | $ 86,000 |
Goodwill |  |  |  |  |  |  | $ 359,613 | $ 359,613 |

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