Goodwill and Other Intangible Assets (Schedule Of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Goodwill [Line Items]
Goodwill	$ 592,880	$ 76,748
Goodwill, Acquired During Period	534,354
Goodwill, Subsequent Recognition of Deferred Tax Asset	(1,893)
Goodwill, Translation Adjustments	(16,329)
National Networks [Member]
Goodwill [Line Items]
Goodwill	74,855	76,748
Goodwill, Acquired During Period	0
Goodwill, Subsequent Recognition of Deferred Tax Asset	(1,893)
Goodwill, Translation Adjustments	0
International And Other [Member]
Goodwill [Line Items]
Goodwill	518,025	0
Goodwill, Acquired During Period	534,354
Goodwill, Subsequent Recognition of Deferred Tax Asset	0
Goodwill, Translation Adjustments	$ (16,329)