FINANCE RECEIVABLES - Past Due Finance Receivables (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	$ 242.2	$ 240.0
Total past due	4.5	2.8
Total finance receivables	246.7	242.8
31-60 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3.2	0.6
61-90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0.1	0.8
Greater than 90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1.2	1.4
Commercial loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	225.5	224.2
Total past due	4.5	2.2
Total finance receivables	230.0	226.4
Non-accrual status	12.7	7.4
Commercial loans | 31-60 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3.2	0.6
Commercial loans | 61-90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0.1	0.2
Commercial loans | Greater than 90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1.2	1.4
Sales-type leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	16.7	15.8
Total past due	0.0	0.6
Total finance receivables	16.7	16.4
Non-accrual status	0.5	0.0
Sales-type leases | 31-60 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0.0	0.0
Sales-type leases | 61-90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0.0	0.6
Sales-type leases | Greater than 90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 0.0	$ 0.0