INCOME TAXES - Schedule of Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current provision (benefit) for income taxes:
Federal	$ 5	$ 6	$ (78)
State	(5)	3	2
Current income tax expense (benefit)	0	9	(76)
Deferred (benefit) provision for income taxes:
Federal	(342)	868	(93)
State	(16)	36	(4)
Deferred income tax expense (benefit)	(358)	904	(97)
(Benefit) provision for income taxes	(358)	913	(173)
Sinclair Broadcast Group, LLC
Current provision (benefit) for income taxes:
Federal	5	6	(78)
State	(5)	3	2
Current income tax expense (benefit)	0	9	(76)
Deferred (benefit) provision for income taxes:
Federal	(331)	868	(93)
State	(28)	36	(4)
Deferred income tax expense (benefit)	(359)	904	(97)
(Benefit) provision for income taxes	$ (359)	$ 913	$ (173)