Basis Of Presentation And Significant Accounting Policies - Dreamcatcher (Details) - USD ($) $ in Thousands		Jun. 30, 2019	Dec. 31, 2018
Variable Interest Entity [Line Items]
Broadcast rights		$ 70,027	$ 95,876
Other intangible assets, net		1,370,614	1,442,456
Other assets		140,111	152,992
Total Assets (1)	[1]	8,462,780	8,251,391
Contracts payable for broadcast rights		212,046	232,687
Other liabilities		117,872	154,599
Total Liabilities (1)	[1]	4,796,263	4,728,294
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Total Assets (1)		66,000	73,000
Total Liabilities (1)		26,000	28,000
Dreamcatcher | Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Broadcast rights		979	2,355
Other intangible assets, net		56,122	61,386
Other assets		8,418	8,770
Total Assets (1)		65,519	72,511
Contracts payable for broadcast rights		870	2,186
Long-term deferred revenue		23,731	24,164
Other liabilities		1,206	1,291
Total Liabilities (1)		$ 25,807	$ 27,641

[1] (1) The Company’s consolidated total assets as of June 30, 2019 and December 31, 2018 include total assets of variable interest entities (“VIEs”) of $66 million and $73 million, respectively, which can only be used to settle the obligations of the VIEs. The Company’s consolidated total liabilities as of June 30, 2019 and December 31, 2018 include total liabilities of the VIEs of $26 million and $28 million, respectively, for which the creditors of the VIEs have no recourse to the Company (see Note 1).