INCOME TAXES - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating Loss Carryforwards [Line Items]
Increase (decrease) in valuation allowance	$ (192)	$ 56
Valuation allowance for deferred tax assets	120	312
Reduction of unrecognized tax benefits reasonably possible	1
Sinclair Broadcast Group, LLC
Operating Loss Carryforwards [Line Items]
Increase (decrease) in valuation allowance	(199)	56
Valuation allowance for deferred tax assets	113	$ 312
Reduction of unrecognized tax benefits reasonably possible	1
Federal
Operating Loss Carryforwards [Line Items]
Gross net operating losses	527
Federal | Sinclair Broadcast Group, LLC
Operating Loss Carryforwards [Line Items]
Gross net operating losses	462
State
Operating Loss Carryforwards [Line Items]
Gross net operating losses	3,236
State | Sinclair Broadcast Group, LLC
Operating Loss Carryforwards [Line Items]
Gross net operating losses	$ 3,222