Investments Equity Method Investments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2012
Schedule of Equity Method Investments [Line Items]
Postconfirmation, Investments				$ 2,224,000
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity	$ 723,000
Equity Method Investment, Net Intangible Assets Subject to Amortization of Basis Difference, Useful Life	16 years
Equity method investments	$ 1,445,901		$ 1,642,117
Income on equity investments, net	37,037	$ 38,252
Distributions from equity investments	111,509	89,346
Write down of Investment	$ 122,000	0
Television Food Network, G.P.
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	31.00%
Equity method investments	$ 1,206,000		1,279,000
Income on equity investments, net	38,000	34,000
Distributions from equity investments	112,000	89,000
CareerBuilder, LLC
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity	$ 72,000
Equity method investment, ownership percentage	32.00%
Equity method investments	$ 219,000		341,000
Income on equity investments, net	(300)	$ 5,000
Write down of Investment	$ 122,000
Dose Media, LLC
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	25.00%
Equity method investments	$ 12,000		$ 12,000
Revaluation of Assets
Schedule of Equity Method Investments [Line Items]
Fresh-Start Adjustment, Increase (Decrease), Investments				1,615,000
Fresh-Start Adjustment, Carrying Value of Equity Investees' Amortizable Intangible Assets				1,108,000
Fresh-Start Adjustment, Carrying Value of Equity Investees' Goodwill and Intangible Assets not Subject to Amortization				$ 507,000