FINANCE RECEIVABLES - Past Due Finance Receivables (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	$ 198.0	$ 200.7
Total past due	2.7	6.0
Total finance receivables	200.7	206.7
31-60 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0.3	2.1
61-90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0.0	0.0
Greater than 90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2.4	3.9
Commercial Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	151.6	168.7
Total past due	2.5	6.0
Total finance receivables	154.1	174.7
Commercial Loans | 31-60 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0.1	2.1
Commercial Loans | 61-90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0.0	0.0
Commercial Loans | Greater than 90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2.4	3.9
Sales-Type Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	46.4	32.0
Total past due	0.2	0.0
Total finance receivables	46.6	32.0
Sales-Type Leases | 31-60 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0.2	0.0
Sales-Type Leases | 61-90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0.0	0.0
Sales-Type Leases | Greater than 90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 0.0	$ 0.0