PROPERTY, PLANT AND EQUIPMENT, INTANGIBLE ASSETS AND GOODWILL - Schedule Of Gross Carrying Amount and Accumulated Amortization for Other Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,931,907	$ 2,909,230
Accumulated Amortization	(2,283,682)	(2,168,722)
Transit, street furniture and other outdoor contractual rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	583,567	563,863
Accumulated Amortization	(456,984)	(426,752)
Customer / advertiser relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,222,971	1,222,519
Accumulated Amortization	(1,072,975)	(1,012,380)
Talent contracts
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	319,384	319,384
Accumulated Amortization	(289,099)	(281,060)
Representation contracts
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	253,234	253,511
Accumulated Amortization	(233,646)	(229,413)
Permanent easements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	162,937	159,782
Accumulated Amortization	0	0
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	389,814	390,171
Accumulated Amortization	$ (230,978)	$ (219,117)