GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Line Items]
Goodwill impairment loss	$ 23.1	$ 23.1	$ 218.6
Impairment, intangible assets, indefinite-lived (excluding goodwill), statement of income or comprehensive income			Impairment of goodwill and franchise rights
Automotive
Goodwill [Line Items]
Goodwill writeoff			$ 26.0
Powersports vehicles
Goodwill [Line Items]
Goodwill impairment loss			218.6
Franchise Rights
Goodwill [Line Items]
Impairment of indefinite-lived intangible assets	$ 37.0	$ 142.7	$ 105.7