PROPERTY, PLANT AND EQUIPMENT, INTANGIBLE ASSETS AND GOODWILL - Schedule Of Gross Carrying Amount and Accumulated Amortization for Other Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,917,461	$ 2,909,230
Accumulated Amortization	(2,221,280)	(2,168,722)
Transit, street furniture and other outdoor contractual rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	569,114	563,863
Accumulated Amortization	(437,297)	(426,752)
Customer / advertiser relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,222,518	1,222,519
Accumulated Amortization	(1,042,587)	(1,012,380)
Talent contracts
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	319,384	319,384
Accumulated Amortization	(285,080)	(281,060)
Representation contracts
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	253,359	253,511
Accumulated Amortization	(231,210)	(229,413)
Permanent easements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	162,893	159,782
Accumulated Amortization	0	0
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	390,193	390,171
Accumulated Amortization	$ (225,106)	$ (219,117)