Earnings Per Common Share - Schedule of Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Earnings per common share—basic
Net income	$ 2.1	$ 6.5
Weighted-average common shares outstanding—basic (in shares)	183.4	183.7
Earnings per common share—basic (in dollars per share)	$ 0.01	$ 0.04
Earnings per common share—diluted
Net income	$ 2.1	$ 6.5
Weighted-average common shares outstanding—basic (in shares)	183.4	183.7
Outstanding options, restricted stock units and performance share units (in shares)	0.1	0.7
Weighted-average common shares outstanding—diluted (in shares)	183.5	184.4
Earnings per common share—diluted (in dollars per share)	$ 0.01	$ 0.04