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 [Abstract]
Net (loss) income	$ (80.0)	$ 41.7
Basic shares	157.8	165.0
Basic net (loss) income per share	$ (0.51)	$ 0.25
Earnings Per Share, Diluted [Abstract]
Basic shares	157.8	165.0
Stock-based compensation	0.0	1.1
Diluted shares	157.8	166.1
Diluted net (loss) income per share	$ (0.51)	$ 0.25
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	10.5	5.6