INCOME TAXES - Income Tax Expense (Benefit) Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current expense (benefit):
Federal	$ 168,397	$ 0	$ 0
State	56,211	65,804	33,103
Foreign	(3)
Total current expense (benefit)	224,605	65,804	33,103
Deferred expense (benefit):
Federal	70,989	113,871	43,105
State	(30,108)	(38,359)	(28,174)
Foreign	(180)
Total deferred benefit	40,701	75,512	14,931
Income tax expense (benefit) before tax benefit relating to uncertain tax positions	265,306	141,316	48,034
Income Tax Expense (Benefit)	294,975	139,748	47,190
Tax benefit relating to uncertain tax positions, adj	29,669	(1,568)	(844)
CSC Holdings
Current expense (benefit):
Federal	179,032	(55,044)	240,229
State	56,211	82,238	70,567
Foreign	(3)
Total current expense (benefit)	235,240	27,194	310,796
Deferred expense (benefit):
Federal	70,989	156,338	(176,591)
State	(38,608)	(55,121)	(62,118)
Foreign	(180)
Total deferred benefit	32,201	101,217	(238,709)
Income tax expense (benefit) before tax benefit relating to uncertain tax positions	267,441	128,411	72,087
Income Tax Expense (Benefit)	297,110	126,843	71,243
Tax benefit relating to uncertain tax positions, adj	$ 29,669	$ (1,568)	$ (844)