Property, Plant And Equipment, Intangible Assets And Goodwill (Schedule Of Changes In Carrying Amount Of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill [Line Items]
Balance	$ 4,202,187	$ 4,216,085
Impairment		(10,684)
Acquisitions	299	97
Dispositions		(456)
Foreign currency	2,346	(974)
Other	65	(1,881)
Balance	4,204,897	4,202,187
CCME [Member]
Goodwill [Line Items]
Balance	3,234,807	3,236,688
Impairment		0
Acquisitions	0	0
Dispositions		0
Foreign currency	0	0
Other	65	(1,881)
Balance	3,234,872	3,234,807
Americas Outdoor Advertising [Member]
Goodwill [Line Items]
Balance	571,932	571,932
Impairment		0
Acquisitions	0	0
Dispositions		0
Foreign currency	0	0
Other	0	0
Balance	571,932	571,932
International Outdoor Advertising [Member]
Goodwill [Line Items]
Balance	278,202	290,316
Impairment		(10,684)
Acquisitions	0	0
Dispositions		(456)
Foreign currency	2,346	(974)
Other	0	0
Balance	280,548	278,202
Other [Member]
Goodwill [Line Items]
Balance	117,246	117,149
Impairment		0
Acquisitions	299	97
Dispositions		0
Foreign currency	0	0
Other	0		0
Balance	$ 117,545	$ 117,246	$ 117,149