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PROPERTY, PLANT AND EQUIPMENT, INTANGIBLE ASSETS AND GOODWILL - Schedule of Gross Carrying Amount and Accumulated Amortization of Other Intangible Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 2,353,821 | $ 2,348,006
Accumulated Amortization | (429,329) | (171,466)
Customer / advertiser relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 1,620,509 | 1,629,236
Accumulated Amortization | (286,066) | (114,280)
Talent contracts |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 375,900 | 375,399
Accumulated Amortization | (84,065) | (33,739)
Trademarks and tradenames |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 326,061 | 321,977
Accumulated Amortization | (54,358) | (21,661)
Other |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 31,351 | 21,394
Accumulated Amortization | $ (4,840) | $ (1,786)

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