Acquisitions - Pro Forma Financial Information (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Business Combinations [Abstract]
Net sales	$ 328.9	$ 1,027.6	$ 1,056.9
Net income	$ 24.8	$ 69.2	$ 102.9
Basic earnings per share (in dollars per share)	$ 0.64	$ 1.77	$ 2.65
Diluted earnings per share (in dollars per share)	$ 0.63	$ 1.75	$ 2.62