Segment Information (Summary Of Continuing Operations By Reportable Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting Information [Line Items]
Advertising	$ 153,984	$ 146,467	$ 550,214	$ 457,670
Distribution	365,566	248,861	1,015,983	698,941
Consolidated revenues, net	519,550	395,328	1,566,197	1,156,611
Adjusted operating cash flow (deficit)	141,873	137,430	465,898	425,888
Depreciation and amortization	(18,295)	(9,935)	(50,220)	(46,588)
Share-based compensation expense	(7,730)	(5,108)	(21,569)	(15,049)
Restructuring Charges	(5,619)	0	(6,772)	0
Gain (Loss) Related to Litigation Settlement	0	0	0	132,944
Operating Income	110,229	122,387	387,337	497,195
Capital Expenditures			24,340	18,336
National Networks [Member]
Segment Reporting Information [Line Items]
Restructuring Charges	(2,462)		(2,462)
International And Other [Member]
Segment Reporting Information [Line Items]
Restructuring Charges	(3,157)		(4,310)
Operating Segments [Member] | National Networks [Member]
Segment Reporting Information [Line Items]
Advertising	137,993	146,467	509,733	457,670
Distribution	259,422	234,680	734,366	661,142
Consolidated revenues, net	397,415	381,147	1,244,099	1,118,812
Adjusted operating cash flow (deficit)	128,582	150,387	443,246	466,176
Depreciation and amortization	(5,205)	(6,635)	(15,158)	(37,111)
Share-based compensation expense	(5,661)	(4,463)	(16,450)	(13,198)
Restructuring Charges	(2,462)		(2,462)
Gain (Loss) Related to Litigation Settlement				0
Operating Income	115,254	139,289	409,176	415,867
Capital Expenditures			7,744	6,978
Operating Segments [Member] | International And Other [Member]
Segment Reporting Information [Line Items]
Advertising	15,991	0	40,481	0
Distribution	106,721	14,183	283,409	37,994
Consolidated revenues, net	122,712	14,183	323,890	37,994
Adjusted operating cash flow (deficit)	12,875	(14,006)	21,363	(43,376)
Depreciation and amortization	(13,090)	(3,300)	(35,062)	(9,477)
Share-based compensation expense	(2,069)	(645)	(5,119)	(1,851)
Restructuring Charges	(3,157)		(4,310)
Gain (Loss) Related to Litigation Settlement				132,944
Operating Income	(5,441)	(17,951)	(23,128)	78,240
Capital Expenditures			16,596	11,358
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Advertising	0	0	0	0
Distribution	(577)	(2)	(1,792)	(195)
Consolidated revenues, net	(577)	(2)	(1,792)	(195)
Adjusted operating cash flow (deficit)	416	1,049	1,289	3,088
Depreciation and amortization	0	0		0
Share-based compensation expense	0	0		0
Restructuring Charges	0		0
Gain (Loss) Related to Litigation Settlement				0
Operating Income	416	1,049	1,289	3,088
Capital Expenditures			0	0
Intersegment Eliminations [Member] | National Networks [Member]
Segment Reporting Information [Line Items]
Consolidated revenues, net	(407)	0	(1,397)	(80)
Intersegment Eliminations [Member] | International And Other [Member]
Segment Reporting Information [Line Items]
Consolidated revenues, net	$ (170)	$ (2)	$ (395)	$ (115)