Segment Information (Summary Of Continuing Operations By Reportable Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting Information [Line Items]
Advertising	$ 180,311	$ 147,243	$ 396,228	$ 311,203
Distribution	341,782	232,079	650,419	450,080
Consolidated revenues, net	522,093	379,322	1,046,647	761,283
Adjusted operating cash flow (deficit)	156,919	138,292	324,025	288,458
Depreciation and amortization	(17,531)	(18,308)	(31,925)	(36,653)
Share-based compensation expense	(8,760)	(5,604)	(13,839)	(9,941)
Restructuring Charges	(1,153)	0	(1,153)	0
Gain (Loss) Related to Litigation Settlement	0	132,944	0	132,944
Operating Income	129,475	247,324	277,108	374,808
Capital Expenditures			18,755	13,670
Operating Segments [Member] | National Networks [Member]
Segment Reporting Information [Line Items]
Advertising	163,836	147,243	371,739	311,203
Distribution	234,168	218,752	474,945	426,463
Consolidated revenues, net	398,004	365,995	846,684	737,666
Adjusted operating cash flow (deficit)	136,918	151,195	314,664	315,790
Depreciation and amortization	(5,046)	(15,177)	(9,953)	(30,476)
Share-based compensation expense	(6,624)	(4,951)	(10,789)	(8,735)
Restructuring Charges	0		0
Gain (Loss) Related to Litigation Settlement		0		0
Operating Income	125,248	131,067	293,922	276,579
Capital Expenditures			7,204	4,698
Operating Segments [Member] | International And Other [Member]
Segment Reporting Information [Line Items]
Advertising	16,475	0	24,489	0
Distribution	108,125	13,389	176,689	23,810
Consolidated revenues, net	124,600	13,389	201,178	23,810
Adjusted operating cash flow (deficit)	19,537	(13,976)	8,488	(29,372)
Depreciation and amortization	(12,485)	(3,131)	(21,972)	(6,177)
Share-based compensation expense	(2,136)	(653)	(3,050)	(1,206)
Restructuring Charges	(1,153)		(1,153)
Gain (Loss) Related to Litigation Settlement		132,944		132,944
Operating Income	3,763	115,184	(17,687)	96,189
Capital Expenditures			11,551	8,972
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Advertising	0	0	0	0
Distribution	(511)	(62)	(1,215)	(193)
Consolidated revenues, net	(511)	(62)	(1,215)	(193)
Adjusted operating cash flow (deficit)	464	1,073	873	2,040
Depreciation and amortization	0	0		0
Share-based compensation expense	0	0		0
Restructuring Charges	0		0
Gain (Loss) Related to Litigation Settlement		0		0
Operating Income	464	1,073	873	2,040
Capital Expenditures			0	0
Intersegment Eliminations [Member] | National Networks [Member]
Segment Reporting Information [Line Items]
Consolidated revenues, net	(316)	(80)	(990)	(80)
Intersegment Eliminations [Member] | International And Other [Member]
Segment Reporting Information [Line Items]
Consolidated revenues, net	$ (195)	$ 18	$ (225)	$ (113)