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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	Mar. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,559,962	$ 2,549,913
Accumulated Amortization	(2,056,306)	(1,999,857)
Transit, street furniture and other outdoor contractual rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	557,381	548,918
Accumulated Amortization	(453,022)	(440,284)
Customer / advertiser relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,226,328	1,226,314
Accumulated Amortization	(1,163,781)	(1,133,251)
Talent contracts
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	161,962	161,962
Accumulated Amortization	(142,513)	(138,728)
Representation contracts
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	77,507	77,507
Accumulated Amortization	(65,191)	(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	373,864	372,292
Accumulated Amortization	$ (231,799)	$ (224,841)

X

- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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