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Goodwill and Other Intangible Assets (Summary Of Intangible Assets) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Affiliation Agreements And Affiliate Relationships [Member]
Dec. 31, 2011
Affiliation Agreements And Affiliate Relationships [Member]
Dec. 31, 2012
Advertiser Relationships [Member]
Dec. 31, 2011
Advertiser Relationships [Member]
Dec. 31, 2012
Other Amortizable Intangible Assets [Member]
Dec. 31, 2011
Other Amortizable Intangible Assets [Member]
Dec. 31, 2012
Minimum [Member]
Affiliation Agreements And Affiliate Relationships [Member]
Y
Dec. 31, 2012
Minimum [Member]
Advertiser Relationships [Member]
Y
Dec. 31, 2012
Minimum [Member]
Other Amortizable Intangible Assets [Member]
Y
Dec. 31, 2012
Maximum [Member]
Affiliation Agreements And Affiliate Relationships [Member]
Y
Dec. 31, 2012
Maximum [Member]
Advertiser Relationships [Member]
Y
Dec. 31, 2012
Maximum [Member]
Other Amortizable Intangible Assets [Member]
Y
Finite-Lived Intangible Assets [Line Items]                            
Gross Carrying Amount of Amortizable Intangible Assets $ 915,649 $ 1,015,724 $ 840,757 $ 911,357 $ 74,248 $ 103,723 $ 644 $ 644            
Accumulated Amortization (694,366) (729,951) (623,621) (637,394) (70,226) (92,166) (519) (391)            
Amortizable Intangible Assets, Net of Accumulated Amortization 221,283 285,773 217,136 273,963 4,022 11,557 125 253            
Trademarks 19,900 19,900                        
Total Intangible Assets, Net 241,183 305,673                        
Total Intangible Assets, Gross $ 935,549 $ 1,035,624                        
Finite-Lived Intangible Assets, Average Useful Life                 4 3 4 25 10 10