EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings per share
Income (loss) from continuing operations	$ 39.7	$ (24.7)
Income (loss) from discontinued operations – net of tax	0.0	(0.2)
Gain (loss) on disposition of discontinued operations – net of tax	0.4	0.0
Net income (loss)	$ 40.1	$ (24.9)
Basic shares:
Weighted average shares outstanding - basic (in shares)	69.5	70.5
Earnings (loss) per share – basic:
Income (loss) from continuing operations	$ 0.57	$ (0.35)
Income (loss) from discontinued operations – net of tax	0	0
Gain (loss) on disposition of discontinued operations – net of tax	0.01	0
Net income (loss)	$ 0.58	$ (0.35)
Diluted shares:
Weighted average shares outstanding - basic (in shares)	69.5	70.5
Effect of dilutive securities:
Stock options and restricted stock awards [in shares]	1.3	0.0
Diluted weighted average shares outstanding (in shares)	70.8	70.5
Earnings (loss) per share – diluted:
Income (loss) from continuing operations	$ 0.56	$ (0.35)
Income (loss) from discontinued operations – net of tax	0	0
Gain (loss) on disposition of discontinued operations – net of tax	0.01	0
Net income (loss)	$ 0.57	$ (0.35)
Restricted Stock
Other details of antidilutive securities
Antidilutive securities excluded from computation of earnings per share (in shares)	0.1	1.6