INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	$ 279	$ 326
Percentage of subsidiaries that file tax return	80.00%
Income Tax Expense (Benefit)	$ (4,071)	39,528	$ 295,840
Increase (Decrease) in Deferred Income Taxes	$ 105,278
Cablevision Lightpath | Cablevision Lightpath
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	49.99%
CSC Holdings
Business Acquisition [Line Items]
Income Tax Expense (Benefit)	$ (8,272)	$ 42,577	$ 292,152
Qualified Opportunity Zone
Business Acquisition [Line Items]
Investment, Tax Basis, Unrealized Gain	600,000
Income Tax Expense (Benefit)	1,269
Qualified emerging technology company
Business Acquisition [Line Items]
Revaluation of state deferred taxes and uncertain tax position reserve	$ 157,300