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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS - Schedule of Impact of Interest Rate Derivative Instruments (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Derivative |  |
Amount of Unrealized Income (Loss), Net of Tax, Recognized in Other Comprehensive Income (Loss) | $ (4.9) | $ 14.3
Amount Reclassified from Other Comprehensive Income (Loss) into Statements of Operations | 5.2 | 7.5
Floorplan interest expense |  |
Derivative |  |
Amount Reclassified from Other Comprehensive Income (Loss) into Statements of Operations | 4.0 | 5.3
Other interest expense, net |  |
Derivative |  |
Amount Reclassified from Other Comprehensive Income (Loss) into Statements of Operations | $ 2.9 | $ 4.6

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