EARNINGS PER-SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net Income
Net Income, Basic	$ 12.5	$ 14.2
Net Income, Diluted	$ 12.5	$ 14.2
Weighted Average Common Shares
Basic (in shares)	42.8	42.6
Effect of Dilutive Securities (in shares)	0.3	0.3
Diluted (in shares)	43.1	42.9
Per Common Share Amount
Net income, Basic (in dollars per share)	$ 0.29	$ 0.33
Net income, Diluted (in dollars per share)	$ 0.29	$ 0.33