Changes in Operations and Non-operating Items Severance by Business Segment (Details) - Employee Severance - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Severance Costs	$ 6,757	$ 4,739	$ 10,406
Operating Segments \| Television and Entertainment
Restructuring Cost and Reserve [Line Items]
Severance Costs	7,155	4,367	9,228
Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Severance Costs	$ (398)	$ 372	$ 1,178

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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