Restructuring and Other Related Charges (Summary of Accrued Restructuring and Other Related Costs) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 111,874,000
Charges (credits)	5,933,000	$ 0
Cash payments	(56,886,000)
Other	547,000
Ending Balance	61,468,000
Severance and Employee-Related Costs
Restructuring Reserve [Roll Forward]
Beginning Balance	37,150,000
Charges (credits)	6,206,000
Cash payments	(15,934,000)
Other	20,000
Ending Balance	27,442,000
Content Impairments and Other Exit Costs
Restructuring Reserve [Roll Forward]
Beginning Balance	74,724,000
Charges (credits)	(273,000)
Cash payments	(40,952,000)
Other	527,000
Ending Balance	$ 34,026,000