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FLOORPLAN NOTES PAYABLE - Schedule of Floorplan Notes Payable (Details) - Line of credit - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Revolving credit facility — floorplan notes payable
Line of Credit Facility
Long-term debt, gross	$ 808.5	$ 901.6
Long-term debt, offset	(231.9)	(160.4)
Long-term debt	576.6	741.2
Other non-manufacturer facilities
Line of Credit Facility
Long-term debt	39.8	26.4
Floorplan notes payable — credit facility and other, net
Line of Credit Facility
Long-term debt	616.4	767.6
FMCC Facility
Line of Credit Facility
Long-term debt, gross	82.5	111.2
Long-term debt, offset	(12.9)	(16.0)
Long-term debt	69.6	95.2
Other manufacturer affiliate facilities
Line of Credit Facility
Long-term debt	258.1	232.3
Floorplan notes payable — manufacturer affiliates, net
Line of Credit Facility
Long-term debt	$ 327.8	$ 327.5

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- Definition

Long-term Debt, Offset

+ References

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
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