ACCOUNTS PAYABLE AND ACCRUED LIABILITIES (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Accounts payable	$ 81.7	$ 81.9
Loaner vehicles notes payable	83.9	87.5
Accrued compensation	30.5	27.6
Accrued finance and insurance chargebacks	22.9	23.0
Accrued insurance	25.3	20.9
Taxes payable	30.5	23.7
Accrued advertising	5.1	3.9
Accrued interest	6.0	6.6
Other	22.8	23.3
Accounts payable and accrued liabilities	308.7	298.4
Loaners/ Notes payable	$ 3.1	$ 0.0