INVENTORIES - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Lower of cost or net realizable value reserves	$ 5.4	$ 4.1
Reduction in inventory cost for interest received from manufacturers	2.8	1.3
Reduction in new vehicle cost of sales for interest assistance received related to vehicles sold	56.0	54.2	$ 47.3
Impairment of inventory	$ 0.3	$ 0.1	$ 0.9