Earnings (Loss) Per Share (EPS) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Numerator [Abstract]
Net income (loss)	$ (33.6)	$ 64.3	$ 5.9
Less: Net income allocated to participating securities	0.0	(2.7)	(0.2)
Net income (loss) attributable to common shareholders - Basic and Dilutive	$ (33.6)	$ 61.6	$ 5.7
Denominator [Abstract]
Weighted-average shares outstanding	120.3	119.4	118.5
Less: Participating securities	(3.7)	(4.9)	(4.6)
Weighted-average common shares outstanding	116.6	114.5	113.9
Dilutive stock-based compensation	0.0	1.0	0.2
Diluted shares outstanding - adjusted weighted-average shares after assumed conversions	116.6	115.5	114.1
Basic earnings (loss) per share	$ (0.29)	$ 0.54	$ 0.05
Diluted earnings (loss) per share	$ (0.29)	$ 0.53	$ 0.05