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FLOORPLAN NOTES PAYABLE - Schedule of Floorplan Notes Payable (Details) - Line of credit - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Revolving credit facility - floorplan notes payable |  |
Line of Credit Facility |  |
Long-term debt, gross | $ 1,358.2 | $ 833.5
Long-term debt, offset | (236.7) | (140.2)
Long-term debt | 1,121.6 | 693.3
Other non-manufacturer facilities |  |
Line of Credit Facility |  |
Long-term debt | 31.4 | 68.8
Floorplan notes payable — credit facility and other, net |  |
Line of Credit Facility |  |
Long-term debt | 1,153.0 | 762.1
FMCC facility |  |
Line of Credit Facility |  |
Long-term debt, gross | 156.6 | 55.1
Long-term debt, offset | (38.5) | (13.4)
Long-term debt | 118.1 | 41.8
GM Financial Facility |  |
Line of Credit Facility |  |
Long-term debt | 37.9 | 0.0
Other manufacturer affiliate facilities |  |
Line of Credit Facility |  |
Long-term debt | 256.4 | 201.3
Floorplan notes payable — manufacturer affiliates, net |  |
Line of Credit Facility |  |
Long-term debt | $ 412.4 | $ 243.1

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