Goodwill and Other Intangible Assets - Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Finite Lived Intangible Assets [Line Items]
Goodwill	$ 1,797,754	$ 573,119
Amortizable intangible assets [Abstract]
Total carrying amount	1,622,322	868,365
Total accumulated amortization	(318,388)	(272,484)
Total other intangible assets	1,303,934	595,881
Total goodwill and other intangible assets	3,101,688	1,169,000
Acquired network distribution [Member]
Amortizable intangible assets [Abstract]
Total carrying amount	749,950	586,687
Total accumulated amortization	(185,814)	(157,847)
Customer and advertiser lists [Member]
Amortizable intangible assets [Abstract]
Total carrying amount	226,954	94,669
Total accumulated amortization	(77,025)	(71,870)
Copyrights and other tradenames [Member]
Amortizable intangible assets [Abstract]
Total carrying amount	398,119	66,782
Total accumulated amortization	(26,483)	(20,046)
Broadcast licenses [Member]
Amortizable intangible assets [Abstract]
Total carrying amount	127,069
Total accumulated amortization	(1,293)
Acquired rights and other [Member]
Amortizable intangible assets [Abstract]
Total carrying amount	120,230	120,227
Total accumulated amortization	$ (27,773)	$ (22,721)