EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Net income (loss)	$ 1,296.7	$ (969.9)	$ (11.3)
Basic shares	159.1	157.9	162.3
Earnings per Share, Basic [Abstract]
Basic net income (loss) per share	$ 8.15	$ (6.14)	$ (0.07)
Earnings per Share, Diluted [Abstract]
Basic shares	159.1	157.9	162.3
Stock-based compensation (in shares)	3.9	0.0	0.0
Diluted shares	163.0	157.9	162.3
Diluted net income (loss) per share	$ 7.96	$ (6.14)	$ (0.07)
Antidilutive shares excluded from the computation of earnings per share (in shares)	0.1	10.0	7.8