Segment Information (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) segment	Jun. 30, 2021 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment			2
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	$ 771.3	$ 723.6	$ 1,491.3	$ 1,394.3
Operating profit	228.4	211.3	418.1	386.9
Stock-based compensation expense			(11.0)	(16.2)
Interest expense (income) and other nonoperating expense (income), net	1.2	0.3	3.1	1.0
Income before income taxes	227.2	211.0	415.0	385.9
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating profit	248.1	234.9	460.6	433.9
Intersegment sales elimination
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	(0.2)	(0.1)	(0.2)	(0.2)
Corporate and Unallocated
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating profit	(19.7)	(23.6)	(42.5)	(47.0)
Stock-based compensation expense	(5.5)	(10.3)	(11.0)	(16.2)
Corporate general costs	(15.6)	(13.4)	(32.7)	(27.3)
Restructuring and severance related charges	1.6	(1.0)	1.6	(2.2)
Amortization of acquisition-related intangible assets	(0.2)	(0.2)	(0.4)	(0.4)
Cost investment activity	0.0	1.3	0.0	(0.9)
Proprietary Products | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	653.7	587.3	1,255.0	1,131.0
Operating profit	233.9	216.2	427.3	398.8
Contract-Manufactured Products | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	117.8	136.4	236.5	263.5
Operating profit	$ 14.2	$ 18.7	$ 33.3	$ 35.1