ACCOUNTS PAYABLE AND ACCRUED LIABILITIES (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Payables and Accruals [Abstract]
Accounts payable	$ 85.5	$ 60.6
Loaner vehicle notes payable	76.6	77.7
Accrued compensation	26.1	25.3
Taxes payable	27.3	19.1
Accrued finance and insurance chargebacks	19.9	16.6
Accrued insurance	13.3	14.4
Accrued interest	4.8	4.6
Other	28.2	27.3
Accounts payable and accrued liabilities	$ 281.7	$ 245.6