RELATED PERSON TRANSACTIONS - MileOne Autogroup Inc. (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Related Party Transaction [Line Items]
Revenue	$ 768.0	$ 837.0	$ 1,541.0	$ 2,125.0
MileOne AutoGroup | Advertising Time
Related Party Transaction [Line Items]
Revenue	0.1	0.1	0.1	0.1
Sinclair Broadcast Group, LLC
Related Party Transaction [Line Items]
Revenue	743.0	837.0	1,516.0	2,125.0
Sinclair Broadcast Group, LLC | MileOne AutoGroup | Advertising Time
Related Party Transaction [Line Items]
Revenue	$ 0.1	$ 0.1	$ 0.1	$ 0.1