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ACQUISITIONS AND DISPOSITIONS - Dispositions (Narrative) (Details)
1 Months Ended 2 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2022
USD ($)
Apr. 30, 2022
USD ($)
Oct. 31, 2023
network
Sep. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Aug. 31, 2023
network
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Number of regional sports networks | network               3
Gain on sale of equity method investments       $ 0 $ 8,000,000 $ 0 $ 141,000,000  
Subsequent Event                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Number of regional sports networks sold | network     2          
Discontinued Operations, Disposed of by Sale | The C W Network L L C                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Minority interest sale price $ 0              
Discontinued Operations, Disposed of by Sale | Discovery Education                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Minority interest sale price   $ 138,000,000            
Gain on sale of equity method investments   $ 133,000,000            
Discontinued Operations, Disposed of by Sale | The C W Network L L C | The C W Network L L C                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Equity method investment, ownership percentage 75.00%       75.00%   75.00%  
Ownership interest retained 12.50%