FINANCE RECEIVABLES - Allowance for Credit Losses on Finance Receivables (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 11.0	$ 5.5	$ 6.6
Provision for credit losses	2.4	5.9	0.1
Charge offs	(0.2)	(0.4)	(1.1)
Recoveries	0.6	0.0	(0.1)
Ending balance	13.8	11.0	5.5
Commercial Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	10.5	4.0	5.7
Provision for credit losses	2.9	6.9	(0.5)
Charge offs	(0.2)	(0.4)	(1.1)
Recoveries	0.6	0.0	(0.1)
Ending balance	13.8	10.5	4.0
Sales-Type Leases
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	0.5	1.5	0.9
Provision for credit losses	(0.5)	(1.0)	0.6
Charge offs	0.0	0.0	0.0
Recoveries	0.0	0.0	0.0
Ending balance	$ 0.0	$ 0.5	$ 1.5