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FLOORPLAN NOTES PAYABLE - Schedule of Floorplan Notes Payable (Details) - Line of credit - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
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Revolving Credit Facility — floorplan notes payable |  |
Line of Credit Facility |  |
Long-term debt, gross | $ 607.9 | $ 511.7
Long-term debt, offset | (77.9) | (268.6)
Long-term debt | 529.9 | 243.1
Other non-manufacturer facilities |  |
Line of Credit Facility |  |
Long-term debt | 46.1 | 51.9
Floorplan notes payable — credit facility and other, net |  |
Line of Credit Facility |  |
Long-term debt | 576.0 | 295.0
FMCC Facility |  |
Line of Credit Facility |  |
Long-term debt, gross | 25.1 | 22.8
Long-term debt, offset | (5.5) | (3.3)
Long-term debt | 19.6 | 19.5
Other manufacturer affiliate facilities |  |
Line of Credit Facility |  |
Long-term debt | 185.3 | 216.5
Floorplan notes payable — manufacturer affiliates, net |  |
Line of Credit Facility |  |
Long-term debt | $ 204.9 | $ 236.0

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