Net Income (Loss) Per Common Share - Summary of Earnings Per Share Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Basic net income per common share:
Net income (loss)	$ 42.7	$ 17.8
Weighted average common shares outstanding - Basic (in shares)	84,600,000	84,300,000
Basic net income (loss) per common share	$ 0.50	$ 0.21
Diluted net income (loss) per common share:
Net income (loss)	$ 42.7	$ 17.8
Weighted average common shares outstanding - Basic (in shares)	84,600,000	84,300,000
Plus incremental shares from assumed conversions:
Weighted average common shares outstanding - Dilutive (in shares)	85,500,000	84,900,000
Diluted net income (loss) per common share	$ 0.50	$ 0.21
Restricted Stock Units
Plus incremental shares from assumed conversions:
Incremental shares from assumed conversions	0.5	0.4
Stock Options
Plus incremental shares from assumed conversions:
Incremental shares from assumed conversions	0.4	0.2