CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 202,141	$ 278,539
Defined benefit pension plans
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax	2,504	8,648
Applicable income taxes	(661)	(2,292)
Defined benefit pension plans, net of income taxes	1,843	6,356
Foreign currency translation adjustment	(170)	619
Applicable income taxes	0	0
Foreign currency translation adjustment, net of income taxes	(170)	619
Other comprehensive income	1,673	6,975
Comprehensive income	203,814	285,514
Comprehensive income attributable to noncontrolling interests	(5,590)	(4,403)
Comprehensive income attributable to CSC Holdings, LLC's sole member	$ 198,224	$ 281,111