EARNINGS PER-SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net Income
Net Income, Basic	$ 32.8	$ 18.4	$ 36.6	$ 30.9
Net Income, Diluted	$ 32.8	$ 18.4	$ 36.6	$ 30.9
Weighted Average Common Shares
Basic (in shares)	43.1	42.8	43.0	42.8
Effect of Dilutive Securities (in shares)	0.2	0.4	0.3	0.4
Diluted (in shares)	43.3	43.2	43.3	43.2
Per Common Share Amount
Net income, Basic (in dollars per share)	$ 0.76	$ 0.43	$ 0.85	$ 0.72
Net income, Diluted (in dollars per share)	$ 0.76	$ 0.43	$ 0.85	$ 0.72