GOODWILL, INDEFINITE-LIVED INTANGIBLE ASSETS, AND OTHER INTANGIBLE ASSETS - Change in Carrying Amount of Indefinite-lived Intangible Assets (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)
Carrying amount of our broadcast licenses
Beginning balance	$ 150
Ending balance	150
Consolidated VIEs
Carrying amount of our broadcast licenses
Ending balance	14
Local media
Carrying amount of our broadcast licenses
Beginning balance	123
Ending balance	123
Other
Carrying amount of our broadcast licenses
Beginning balance	3
Ending balance	3
Sinclair Broadcast Group, LLC
Carrying amount of our broadcast licenses
Beginning balance	150
Transferred to Ventures	(27)
Ending balance	123
Sinclair Broadcast Group, LLC | Consolidated VIEs
Carrying amount of our broadcast licenses
Ending balance	14
Sinclair Broadcast Group, LLC | Local media
Carrying amount of our broadcast licenses
Beginning balance	123
Transferred to Ventures	0
Ending balance	123
Sinclair Broadcast Group, LLC | Other
Carrying amount of our broadcast licenses
Beginning balance	27
Transferred to Ventures	(27)
Ending balance	$ 0