EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Net income	$ 45.5	$ 52.7
Weighted-average shares for basic EPS (in shares)	83,300,000	83,300,000
Plus incremental shares from assumed conversions of long-term incentive plan shares (in shares)	300,000	0
Weighted-average shares for diluted EPS (in shares)	83,600,000	83,300,000
Basic earnings per share (in dollars per share)	$ 0.55	$ 0.63
Diluted earnings per share (in dollars per share)	$ 0.54	$ 0.63
Anti-dilutive shares (in shares)	0	0