Net Income (Loss) Per Common Share - Summary of Earnings Per Share Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Basic net income per common share:
Net income	$ 36.5	$ 42.7
Weighted average common shares outstanding - Basic (in shares)	83.9	84.6
Basic net income per common share	$ 0.44	$ 0.5
Diluted net income per common share:
Net income	$ 36.5	$ 42.7
Weighted average common shares outstanding - Basic (in shares)	83.9	84.6
Plus incremental shares from assumed conversions:
Weighted average common shares outstanding - Dilutive (in shares)	84.8	85.5
Diluted net income per common share	$ 0.43	$ 0.5
Restricted Stock Units
Plus incremental shares from assumed conversions:
Incremental shares from assumed conversions	0.5	0.5
Stock Options
Plus incremental shares from assumed conversions:
Incremental shares from assumed conversions	0.4	0.4