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SEGMENT INFORMATION - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) reportableSegment	Dec. 31, 2023 USD ($)	Dec. 11, 2023 USD ($)	Dec. 31, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | reportableSegment	2
Goodwill	$ 2,044.7	$ 2,009.0		$ 1,783.4
Jim Koons Dealerships
Segment Reporting Information [Line Items]
Goodwill			$ 272.4

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Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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