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FLOORPLAN NOTES PAYABLE - Schedule of Floorplan Notes Payable (Details) - Line of credit - USD ($) $ in Millions | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Revolving credit facility — floorplan notes payable |  |
Line of Credit Facility |  |
Long-term debt, gross | $ 511.5 | $ 901.6
Long-term debt, offset | (326.1) | (160.4)
Long-term debt | 185.4 | 741.2
Other non-manufacturer facilities |  |
Line of Credit Facility |  |
Long-term debt | 39.1 | 26.4
Floorplan notes payable — credit facility and other, net |  |
Line of Credit Facility |  |
Long-term debt | 224.5 | 767.6
FMCC Facility |  |
Line of Credit Facility |  |
Long-term debt, gross | 26.8 | 111.2
Long-term debt, offset | 0.0 | (16.0)
Long-term debt | 26.8 | 95.2
Other manufacturer affiliate facilities |  |
Line of Credit Facility |  |
Long-term debt | 247.2 | 232.3
Floorplan notes payable — manufacturer affiliates, net |  |
Line of Credit Facility |  |
Long-term debt | $ 274.0 | $ 327.5

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