Segment Information (Summary Of Continuing Operations By Reportable Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting Information [Line Items]
Advertising	$ 215,918	$ 163,960
Distribution	308,636	218,001
Consolidated revenues, net	524,554	381,961
Adjusted operating cash flow (deficit)	167,107	150,166
Depreciation and amortization	(14,394)	(18,345)
Share-based compensation expense	(5,080)	(4,337)
Operating Income	147,633	127,484
Capital Expenditures	6,189	8,003
Operating Segments [Member] | National Networks [Member]
Segment Reporting Information [Line Items]
Advertising	207,903	163,960
Distribution	240,777	207,710
Consolidated revenues, net	448,680	371,670
Adjusted operating cash flow (deficit)	177,745	164,594
Depreciation and amortization	(4,907)	(15,299)
Share-based compensation expense	(4,167)	(3,784)
Operating Income	168,671	145,511
Capital Expenditures	1,177	2,203
Operating Segments [Member] | International And Other [Member]
Segment Reporting Information [Line Items]
Advertising	8,015	0
Distribution	68,563	10,422
Consolidated revenues, net	76,578	10,422
Adjusted operating cash flow (deficit)	(11,047)	(15,394)
Depreciation and amortization	(9,487)	(3,046)
Share-based compensation expense	(913)	(553)
Operating Income	(21,447)	(18,993)
Capital Expenditures	5,012	5,800
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Advertising	0	0
Distribution	(704)	(131)
Consolidated revenues, net	(704)	(131)
Adjusted operating cash flow (deficit)	409	966
Depreciation and amortization	0	0
Share-based compensation expense	0	0
Operating Income	409	966
Capital Expenditures	0	0
Intersegment Eliminations [Member] | National Networks [Member]
Segment Reporting Information [Line Items]
Consolidated revenues, net	(674)	(131)
Intersegment Eliminations [Member] | International And Other [Member]
Segment Reporting Information [Line Items]
Consolidated revenues, net	$ (30)	$ 0