Restructuring and Other Related Charges (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges	$ 448,966	$ 10,378	$ 35,068
Accrued restructuring and other related costs	111,874	340	25,602
Accrued liabilities
Restructuring Cost and Reserve [Line Items]
Accrued restructuring and other related costs	108,000	300
Other liabilities
Restructuring Cost and Reserve [Line Items]
Accrued restructuring and other related costs	3,900
2022 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges	449,000
Corporate / Inter-segment Eliminations
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges	22,907	1,779	5,712
Severance and Employee-Related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges	45,212	5,921	21,200
Accrued restructuring and other related costs	37,150	311	25,571
Severance and Employee-Related Costs | 2022 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges	45,200
Severance and Employee-Related Costs | November 2020 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges		4,300
Severance and Employee-Related Costs | A M C N I Reporting Unit
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges		$ 6,100
Severance and Employee-Related Costs | Corporate / Inter-segment Eliminations
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges			5,200
Severance and Employee-Related Costs | Domestic Operations
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges			15,800
Severance and Employee-Related Costs | International and Other
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges			200
Content Impairments | 2022 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges	$ 403,800
Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges			$ 13,900