CONSOLIDATED STATEMENTS OF EQUITY (DEFICIT) AND REDEEMABLE NONCONTROLLING INTERESTS (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Class A Common Stock
Quarterly dividend declared (in dollars per share)	$ 1.00	$ 1.00	$ 0.80
Dividends paid on Old Sinclair (in dollars per share)	1.00	1.00	0.80
Class B Common Stock
Quarterly dividend declared (in dollars per share)	1.00	1.00	0.80
Dividends paid on Old Sinclair (in dollars per share)	1.00	1.00	0.80
Sinclair Broadcast Group, LLC | Class A Common Stock
Quarterly dividend declared (in dollars per share)	0.25	1.00	0.80
Dividends paid on Old Sinclair (in dollars per share)	0.25	1.00	0.80
Sinclair Broadcast Group, LLC | Class B Common Stock
Quarterly dividend declared (in dollars per share)	0.25	1.00	0.80
Dividends paid on Old Sinclair (in dollars per share)	$ 0.25	$ 1.00	$ 0.80