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PROPERTY, PLANT AND EQUIPMENT, INTANGIBLE ASSETS AND GOODWILL - Schedule Of Gross Carrying Amount and Accumulated Amortization for Other Intangible Assets (Detail) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 2,535,667 | $ 2,549,913
Accumulated Amortization | (2,103,170) | (1,999,857)
Transit, street furniture and other outdoor contractual rights |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 533,274 | 548,918
Accumulated Amortization | (440,452) | (440,284)
Customer / advertiser relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 1,226,329 | 1,226,314
Accumulated Amortization | (1,205,662) | (1,133,251)
Talent contracts |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 161,962 | 161,962
Accumulated Amortization | (146,978) | (138,728)
Representation contracts |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 77,507 | 77,507
Accumulated Amortization | (68,976) | (62,753)
Permanent easements |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 162,920 | 162,920
Accumulated Amortization | 0 | 0
Other |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 373,675 | 372,292
Accumulated Amortization | $ (241,102) | $ (224,841)

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