SEGMENT REPORTING - Segment Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Revenue	$ (1,366.4)	$ (1,458.9)
Goodwill and franchise rights impairment charge	(60.1)	(324.3)
Operating income (loss)	(69.5)	(260.1)
Depreciation and amortization	22.0	23.0
Interest expense	77.2	52.1
Total assets	926.3	1,027.2
Discontinued Operations
Segment Reporting Information [Line Items]
Total assets	0.0	11.4
Operating Segments | Powersports
Segment Reporting Information [Line Items]
Revenue	(1,310.2)	(1,404.9)
Goodwill and franchise rights impairment charge	(60.1)	(324.3)
Operating income (loss)	(75.2)	(265.0)
Depreciation and amortization	22.0	23.0
Interest expense	77.2	52.1
Operating Segments | Powersports | Continuing Operations
Segment Reporting Information [Line Items]
Total assets	1,766.3	1,872.2
Operating Segments | Vehicle transportation services
Segment Reporting Information [Line Items]
Revenue	(56.2)	(54.0)
Goodwill and franchise rights impairment charge	0.0	0.0
Operating income (loss)	5.7	4.9
Depreciation and amortization	0.0	0.0
Interest expense	0.0	0.0
Operating Segments | Vehicle transportation services | Continuing Operations
Segment Reporting Information [Line Items]
Total assets	4.0	3.9
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenue	0.4	3.3
Intersegment Eliminations | Continuing Operations
Segment Reporting Information [Line Items]
Total assets	(844.0)	(860.3)
Intersegment Eliminations | Powersports
Segment Reporting Information [Line Items]
Revenue	0.0	0.0
Intersegment Eliminations | Vehicle transportation services
Segment Reporting Information [Line Items]
Revenue	0.4	3.3
Eliminations
Segment Reporting Information [Line Items]
Revenue	0.0	0.0
Goodwill and franchise rights impairment charge	0.0	0.0
Operating income (loss)	0.0	0.0
Depreciation and amortization	0.0	0.0
Interest expense	$ 0.0	$ 0.0