Restructuring and Other Related Charges (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges	$ 10,191	$ 3,139	$ 29,995	$ 3,139
Restructuring charges	10,191	$ 3,139	16,978	$ 3,139
Other related charges	0		13,017
Accrued restructuring costs, accrued liabilities	19,600		19,600
Accrued restructuring costs, other liabilities (long-term)	$ 5,400		5,400
Owned subscription streaming services restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges			1,300
Previously announced restructuring initiatives
Restructuring Cost and Reserve [Line Items]
Restructuring charges			5,500
Severance and employee-related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 15,215