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Property, Plant And Equipment, Intangible Assets And Goodwill (Narrative) (Detail) $ in Thousands		1 Months Ended	3 Months Ended	12 Months Ended
	Jan. 15, 2016 USD ($) Stations	Jan. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) Stations	Dec. 31, 2015 USD ($) Markets Stations	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Amortization expense				$ 237,500	$ 263,400	$ 289,000
Goodwill Impairment Loss				0	0
Intangible assets held for sale			$ 41,800	$ 41,800
Maximum [Member]
Land lease initial terms				20 years
Minimum [Member]
Land lease initial terms				10 years
iHM [Member]
Cumulative impairments						3,500,000
Americas Outdoor Advertising [Member]
Goodwill Impairment Loss					0
Cumulative impairments						2,600,000
International Outdoor Advertising [Member]
Goodwill Impairment Loss				$ 0	0	10,700
Cumulative impairments						326,600
Other [Member]
Goodwill Impairment Loss					$ 0
Cumulative impairments						$ 212,000
Billboard permits [Member]
Impairment of intangibles				21,600
Two Office Buildings San Antonio [Member]
Annual lease payments			2,600
Gain (loss) on disposal			8,100
Disposal proceeds			34,300
Broadcast communication tower sites and related assets [Member]
Annual lease payments				13,300
Gain (loss) on disposal				205,700
Disposal proceeds	$ 5,500			369,900
Deferred portion of gain on asset disposal			$ 108,800	$ 108,800
Radio stations sold | Stations	6		376	376
Sale Leaseback Number Of Radio Station | Stations			367	367
Non-strategic outdoor markets [Member]
Disposal proceeds		$ 602,000
Number Of Businesses sold | Markets				9

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