FINANCE RECEIVABLES - Allowance for Credit Losses on Finance Receivable (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	$ 4.5	$ 6.3	$ 6.6	$ 6.3
Provision for credit losses	0.0	1.0	(1.0)	1.1
Charge offs	0.0	(0.2)	(1.1)	(0.3)
Balance, end of period	4.5	7.1	4.5	7.1
Commercial loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	3.0	5.9	5.7	5.9
Provision for credit losses	0.0	0.9	(1.6)	1.0
Charge offs	0.0	(0.2)	(1.1)	(0.3)
Balance, end of period	3.0	6.6	3.0	6.6
Sales-type leases
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	1.5	0.4	0.9	0.4
Provision for credit losses	0.0	0.1	0.6	0.1
Charge offs	0.0	0.0	0.0	0.0
Balance, end of period	$ 1.5	$ 0.5	$ 1.5	$ 0.5