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EARNINGS PER SHARE (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Earnings per share    
Income (loss) from continuing operations $ (24.7) $ 57.2
Income (loss) from discontinued operations – net of tax (0.2) (124.4)
Gain (loss) on disposition of discontinued operations – net of tax 0.0 0.6
Net income (loss) $ (24.9) $ (66.6)
Basic shares:    
Weighted average shares outstanding - basic (in shares) 70.5 70.6
Earnings (loss) per share – basic:    
Income (loss) from continuing operations $ (0.35) $ 0.81
Income (loss) from discontinued operations – net of tax 0 (1.76)
Gain (loss) on disposition of discontinued operations – net of tax 0 0.01
Net income (loss) $ (0.35) $ (0.94)
Diluted shares:    
Weighted average shares outstanding - basic (in shares) 70.5 70.6
Effect of dilutive securities:    
Stock options and restricted stock awards [in shares] 0.0 1.2
Diluted weighted average shares outstanding (in shares) 70.5 71.8
Earnings (loss) per share – diluted:    
Income (loss) from continuing operations $ (0.35) $ 0.79
Income (loss) from discontinued operations – net of tax 0 (1.73)
Gain (loss) on disposition of discontinued operations – net of tax 0 0.01
Net income (loss) $ (0.35) $ (0.93)
Restricted Stock    
Other details of antidilutive securities    
Antidilutive securities excluded from computation of earnings per share (in shares) 1.6 0.8