NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Supplemental Information - Statement of Cash Flows (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property and equipment
Income taxes paid	$ 5	$ 18	$ 16
Income tax refunds	1	158	44
Interest paid	294	387	583
Non-cash transaction property and equipment	5	5	5
Shares received in exchange for equivalent value of advertising spots		3	6
Sinclair Broadcast Group, LLC
Property and equipment
Income taxes paid	5	18	16
Income tax refunds	1	158	44
Interest paid	294	387	583
Non-cash transaction property and equipment	$ 5	5	5
Shares received in exchange for equivalent value of advertising spots		$ 3	6
Equipment
Property and equipment
Receipt of equipment with a fair value			58
Equipment | Sinclair Broadcast Group, LLC
Property and equipment
Receipt of equipment with a fair value			$ 58