Goodwill and Other Intangible Assets (Summary Of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount of amortizable intangible assets	$ 915,649	$ 1,015,724
Accumulated amortization	(681,843)	(729,951)
Amortizable intangible assets, net of accumulated amortization	233,806	285,773
Trademarks	19,900	19,900
Total intangible assets, gross	935,549	1,035,624
Total intangible assets, net	253,706	305,673
Affiliation Agreements And Affiliate Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount of amortizable intangible assets	840,757	911,357
Accumulated amortization	(612,986)	(637,394)
Amortizable intangible assets, net of accumulated amortization	227,771	273,963
Advertiser Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount of amortizable intangible assets	74,248	103,723
Accumulated amortization	(68,370)	(92,166)
Amortizable intangible assets, net of accumulated amortization	5,878	11,557
Other Amortizable Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount of amortizable intangible assets	644	644
Accumulated amortization	(487)	(391)
Amortizable intangible assets, net of accumulated amortization	$ 157	$ 253