LEASES Lease Cost (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Leases [Abstract]
Operating lease cost	$ 35.0
Impairment of operating lease ROU assets	0.9
Total operating lease cost	35.9
Finance lease ROU asset amortization	1.7
Finance lease interest expense	0.2
Total finance lease cost	1.9
Variable lease cost	2.6
Short-term lease cost	0.2
Total lease cost	$ 40.6