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PROPERTY, PLANT AND EQUIPMENT, INTANGIBLE ASSETS AND GOODWILL - Narrative (Details)
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 72 Months Ended
Sep. 30, 2023
USD ($)
broadcast_tower_site
Sep. 30, 2024
USD ($)
Jun. 30, 2024
USD ($)
Sep. 30, 2023
USD ($)
broadcast_tower_site
Jun. 30, 2023
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2023
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2024
USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Number of broadcast tower sites sold | broadcast_tower_site 122     122              
Sale leaseback assets $ 45,300,000     $ 45,300,000              
Sale and leaseback realized loss $ 3,200,000                    
Number of broadcast tower sites entered into operating leases for use | broadcast_tower_site 121     121              
Indefinite-lived intangibles - licenses               $ 809,928,000 $ 1,113,979,000   $ 809,928,000
Non-cash impairment charge of intangible assets             $ 595,500,000        
Goodwill impairment     $ 616,100,000     $ 616,100,000   616,085,000 595,461,000 $ 0  
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]                   Impairment charges  
Amortization of intangible assets               $ 245,300,000 $ 246,700,000 $ 253,600,000  
Licensing Agreements                      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Non-cash impairment charge of intangible assets     $ 304,100,000   $ 363,600,000         $ 302,100,000 $ 1,500,000,000
Goodwill impairment   $ 0   $ 0