Goodwill and Other Intangible Assets (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Goodwill [Line Items]
Goodwill, Subsequent Recognition of Deferred Tax Asset	$ 3,868,000
Finite-Lived Intangible Assets, Amortization Expense	64,489,000	79,109,000	86,650,000
Percentage Decrease In Fair Value That Would Require Step Two Of Quantitative Assessment	11.00%
Percentage Of Hypothetical Decrease	20.00%
Goodwill and Intangible Asset Impairment	0
Goodwill, Impaired, Accumulated Impairment Loss	0
Affiliation Agreements And Affiliate Relationships [Member]
Goodwill [Line Items]
Retirement Of Fully Amortized Intangible Assets	70,600,000
Advertiser Relationships [Member]
Goodwill [Line Items]
Retirement Of Fully Amortized Intangible Assets	$ 29,475,000