Goodwill and Other Intangible Assets (Summary Of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Gross Carrying Amount of Amortizable Intangible Assets	$ 244,244	$ 915,649
Accumulated amortization	(52,142)	(694,366)
Amortizable intangible assets, net of accumulated amortization	192,102	221,283
Trademarks	19,900	19,900
Intangible Assets, Gross, Excluding Goodwill	264,144	935,549
Total intangible assets, net	212,002	241,183
Affiliate Relationships [Member]
Gross Carrying Amount of Amortizable Intangible Assets	243,600
Accumulated amortization	(51,535)
Amortizable intangible assets, net of accumulated amortization	192,065
Other Amortizable Intangible Assets [Member]
Gross Carrying Amount of Amortizable Intangible Assets	644	644
Accumulated amortization	(607)	(519)
Amortizable intangible assets, net of accumulated amortization	37	125
Affiliation Agreements And Affiliate Relationships [Member]
Gross Carrying Amount of Amortizable Intangible Assets		840,757
Accumulated amortization		(623,621)
Amortizable intangible assets, net of accumulated amortization		217,136
Advertiser Relationships [Member]
Gross Carrying Amount of Amortizable Intangible Assets		74,248
Accumulated amortization		(70,226)
Amortizable intangible assets, net of accumulated amortization		$ 4,022