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FLOORPLAN NOTES PAYABLE - Schedule of Floorplan Notes Payable (Details) - Line of Credit - USD ($) $ in Millions | Sep. 30, 2023 | Dec. 31, 2022
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Revolving Credit Facility — floorplan notes payable |  |
Line of Credit Facility |  |
Long-term debt, gross | $ 1,022.3 | $ 833.5
Long-term debt, offset | (191.7) | (140.2)
Long-term debt | 830.6 | 693.3
Other non-manufacturer facilities |  |
Line of Credit Facility |  |
Long-term debt | 58.4 | 68.8
Floorplan notes payable — credit facility and other, net |  |
Line of Credit Facility |  |
Long-term debt | 889.0 | 762.1
FMCC Facility |  |
Line of Credit Facility |  |
Long-term debt, gross | 95.4 | 55.1
Long-term debt, offset | (19.0) | (13.4)
Long-term debt | 76.4 | 41.8
Other manufacturer affiliate facilities |  |
Line of Credit Facility |  |
Long-term debt | 276.9 | 201.3
Floorplan notes payable — manufacturer affiliates, net |  |
Line of Credit Facility |  |
Long-term debt | $ 353.3 | $ 243.1

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