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ASSETS AND LIABILITIES HELD FOR SALE - Narrative (Details) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Jul. 30, 2025 franchise dealership	Jun. 30, 2025 USD ($) franchise property dealership	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) franchise property dealership	Jun. 30, 2024 USD ($)	Mar. 31, 2025 dealership	Dec. 31, 2024 dealership property franchise
Long Lived Assets Held-for-sale [Line Items]
Asset impairments | $		$ 0.0	$ 135.4	$ 14.3	$ 135.4
Franchise | Subsequent Event
Long Lived Assets Held-for-sale [Line Items]
Number of franchises, sold (in franchises) | franchise	4
Dealership Location | Subsequent Event
Long Lived Assets Held-for-sale [Line Items]
Number of dealership locations, sold (in dealership locations) | dealership	4
Held-for-sale | Franchise
Long Lived Assets Held-for-sale [Line Items]
Number of assets held-for-sale | franchise		5		5			7
Asset impairments | $				$ 14.3
Held-for-sale | Dealership Location
Long Lived Assets Held-for-sale [Line Items]
Number of assets held-for-sale | dealership		5		5		5	6
Held-for-sale | Real Estate
Long Lived Assets Held-for-sale [Line Items]
Number of assets held-for-sale | property		2		2			1

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482130/360-10-45-4

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