NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Acquisitions and Station Disposals (Details) $ in Millions	1 Months Ended		3 Months Ended	9 Months Ended
	Sep. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Jul. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Acquisition of businesses, net of cash acquired				$ 25	$ 0
Goodwill	$ 2,086		$ 2,086	2,086			$ 2,082
Disposed of by sale | Station Disposals
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration	36		36	36		$ 36
Loss from disposal				8
CPX Interactive LLC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Acquisition of businesses, net of cash acquired		$ 30
Cash acquired		$ 5
Remaining percentage of business acquired		0.75
Definite-lived intangible assets		$ 22
Goodwill		$ 17
WLNE
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Definite-lived intangible assets	27
Asset purchase agreement consideration	32		32	32
Property and equipment	1		1	1
Net working capital	$ 4		$ 4	$ 4