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DISCONTINUED OPERATIONS AND OTHER DIVESTITURES - Assets and Liabilities Held for Sale (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Current assets classified as held for sale	$ 99.1	$ 53.6
Current liabilities classified as held for sale	7.2	4.8
Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Current assets classified as held for sale	99.1	53.6
Current liabilities classified as held for sale	7.2	4.8
Goodwill	39.8	13.4
Held-for-sale | Prime Automotive Group
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Current assets classified as held for sale	0.0	9.8
Current liabilities classified as held for sale	0.0	1.1
Held-for-sale | Other
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Current assets classified as held for sale	99.1	43.8
Current liabilities classified as held for sale	$ 7.2	$ 3.7

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