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
Earnings per share
Income (loss) from continuing operations	$ (3.2)	$ 81.6	$ (27.9)	$ 138.8
Income (loss) from discontinued operations – net of tax	(1.0)	(17.3)	(1.2)	(141.7)
Gain (loss) on disposition of discontinued operations – net of tax	(5.0)	10.8	(5.0)	11.4
Net income (loss)	$ (9.2)	$ 75.1	$ (34.1)	$ 8.5
Basic shares:
Weighted average shares outstanding - basic (in shares)	69.3	71.2	69.9	70.9
Earnings (loss) per share – basic:
Income (loss) from continuing operations	$ (0.05)	$ 1.14	$ (0.40)	$ 1.96
Income (loss) from discontinued operations – net of tax	(0.01)	(0.24)	(0.02)	(2.00)
Gain (loss) on disposition of discontinued operations – net of tax	(0.07)	0.15	(0.07)	0.16
Net income (loss)	$ (0.13)	$ 1.05	$ (0.49)	$ 0.12
Diluted shares:
Weighted average shares outstanding - basic (in shares)	69.3	71.2	69.9	70.9
Effect of dilutive securities:
Stock options and restricted stock awards [in shares]	0.0	0.5	0.0	0.9
Diluted weighted average shares outstanding (in shares)	69.3	71.7	69.9	71.8
Earnings (loss) per share – diluted:
Income (loss) from continuing operations	$ (0.05)	$ 1.14	$ (0.40)	$ 1.93
Income (loss) from discontinued operations – net of tax	(0.01)	(0.24)	(0.02)	(1.97)
Gain (loss) on disposition of discontinued operations – net of tax	(0.07)	0.15	(0.07)	0.16
Net income (loss)	$ (0.13)	$ 1.05	$ (0.49)	$ 0.12
Restricted Stock
Other details of antidilutive securities
Antidilutive securities excluded from computation of earnings per share (in shares)	2.0	1.2	2.0	0.9