Goodwill and Other Intangible Assets (Schedule Of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Goodwill [Line Items]
Goodwill	$ 601,921	$ 76,748
Goodwill, Acquired During Period	514,237
Goodwill, Subsequent Recognition of Deferred Tax Asset	(1,278)
Goodwill, Translation Adjustments	12,214
National Networks [Member]
Goodwill [Line Items]
Goodwill	75,470	76,748
Goodwill, Acquired During Period	0
Goodwill, Subsequent Recognition of Deferred Tax Asset	(1,278)
Goodwill, Translation Adjustments	0
International And Other [Member]
Goodwill [Line Items]
Goodwill	526,451	0
Goodwill, Acquired During Period	514,237
Goodwill, Subsequent Recognition of Deferred Tax Asset	0
Goodwill, Translation Adjustments	$ 12,214