Basis Of Presentation And Significant Accounting Policies - Dreamcatcher (Details) - USD ($) $ in Thousands		Sep. 30, 2017	Dec. 31, 2016
Variable Interest Entity [Line Items]
Property, plant and equipment, net		$ 430,566	$ 523,920
Broadcast rights		144,303	153,457
Other intangible assets, net		1,655,467	1,819,134
Other assets		141,790	80,098
Total Assets (1)	[1]	8,174,081	9,401,051
Debt due within one year		0	19,924
Contracts payable for broadcast rights		273,176	241,255
Long-term debt		2,917,454	3,391,627
Other liabilities		155,948	62,700
Total Liabilities (1)	[1]	5,284,704	5,855,368
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Total Assets (1)		101,000	97,000
Total Liabilities (1)		25,000	3,000
Dreamcatcher | Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Property, plant and equipment, net		23	91
Broadcast rights		3,545	2,634
Other intangible assets, net		74,546	82,442
Other assets		8,140	134
Total Assets (1)		86,254	85,301
Debt due within one year		0	4,003
Contracts payable for broadcast rights		3,544	2,758
Long-term debt		0	10,767
Deferred Revenue, Noncurrent		20,312	0
Other liabilities		661	85
Total Liabilities (1)		$ 24,517	$ 17,613

[1] (1) The Company’s consolidated total assets as of September 30, 2017 and December 31, 2016 include total assets of variable interest entities (“VIEs”) of $101 million and $97 million, respectively, which can only be used to settle the obligations of the VIEs. The Company’s consolidated total liabilities as of September 30, 2017 and December 31, 2016 include total liabilities of the VIEs of $25 million and $3 million, respectively, for which the creditors of the VIEs have no recourse to the Company (see Note 1).