LEASES - Operating and Finance Leases by Balance Sheets Location (Details) $ in Millions	Dec. 31, 2019 USD ($)
ASSETS
Operating lease assets	$ 53.7
Finance lease assets	5.8
Total leased assets	59.5
Current liabilities:
Operating	12.8
Finance	1.1
Noncurrent liabilities:
Operating	41.0
Finance	6.2
Total lease liabilities	$ 61.1