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INCOME TAXES - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Business Acquisition [Line Items]      
Revaluation of state deferred taxes and uncertain tax position reserve $ 157,300    
Deferred Tax Assets, Operating Loss Carryforwards, Foreign 326 $ 354  
Research and Development Expense $ 33,427 $ 22,292  
Alternative Minimum Tax Credit receivable     $ 48,645
Increase (Decrease) in Income Taxes Receivable     $ 12,161
Percentage of subsidiaries that file tax return 80.00%    
Cablevision Lightpath | Cablevision Lightpath      
Business Acquisition [Line Items]      
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners 49.99%    
Newsday      
Business Acquisition [Line Items]      
Ownership percentage     1.00%
Newsday      
Business Acquisition [Line Items]      
Recognized Capital Tax Losses     $ 235,316
i24 News S.a.r.l      
Business Acquisition [Line Items]      
Recognized Capital Tax Losses     $ 104,171