REVENUE RECOGNITION (Contract Assets) (Details) $ in Millions	3 Months Ended
Mar. 31, 2020 USD ($)
Change in Contract with Customer, Asset [Roll Forward]
Contract Assets (Current), January 1, 2020	$ 17.1
Transferred to receivables from contract assets recognized at the beginning of the period	(8.9)
Increases related to revenue recognized, inclusive of adjustments to constraint, during the period	8.3
Contract Assets (Current), March 31, 2020	16.5
Vehicle Repair and Maintenance Services \| Vehicle repair and maintenance services
Change in Contract with Customer, Asset [Roll Forward]
Contract Assets (Current), January 1, 2020	4.8
Transferred to receivables from contract assets recognized at the beginning of the period	(4.8)
Increases related to revenue recognized, inclusive of adjustments to constraint, during the period	3.7
Contract Assets (Current), March 31, 2020	3.7
Finance and Insurance, net
Change in Contract with Customer, Asset [Roll Forward]
Contract Assets (Current), January 1, 2020	12.3
Transferred to receivables from contract assets recognized at the beginning of the period	(4.1)
Increases related to revenue recognized, inclusive of adjustments to constraint, during the period	4.6
Contract Assets (Current), March 31, 2020	$ 12.8

Change in Contract with Customer, Asset [Roll Forward]

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Amount of increase (decrease) in revenue recognized for cumulative catch-up adjustment from change in measure of progress which increases (decreases) right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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-Section 50
-Paragraph 10
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130551-203045

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Amount of decrease in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time from transfer to receivable due to right to consideration becoming unconditional.

+ References

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