Segment Information (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) facility segment	Sep. 30, 2022 USD ($)
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	$ 747.4	$ 686.9	$ 2,217.8	$ 2,178.2
Operating profit	177.3	186.2	515.1	604.3
Stock-based compensation expense			(21.9)	(17.0)
Loss on disposal of plant	0.0	0.0	(11.6)	0.0
Interest (income) expense and other nonoperating (income) expense, net	(9.7)	50.0	(14.7)	53.1
Income before income taxes and equity in net income of affiliated companies	187.0	136.2	$ 529.8	551.2
Number of loss on disposal manufacturing facility | facility			1
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating profit	202.6	203.3	$ 599.8	663.9
Intersegment sales elimination
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	0.0	(0.1)	0.0	(0.3)
Corporate and Unallocated
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating profit	(25.3)	(17.1)	(84.7)	(59.6)
Stock-based compensation expense	(5.9)	(6.0)	(21.9)	(17.0)
Corporate general costs	(15.9)	(10.9)	(47.2)	(43.6)
Loss on disposal of plant	0.0	0.0	(11.6)	0.0
Cost investment impairment	(3.3)	0.0	(3.3)	0.0
Amortization of acquisition-related intangible assets	(0.2)	(0.2)	(0.6)	(0.6)
Corporate and Unallocated | 2022 Restructuring Plan
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Restructuring and other charges	0.0	0.0	(0.1)	1.6
Inventory write-down			0.9
Corporate and Unallocated | 2022 Restructuring Plan | Other Operating Income (Expense)
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Benefit within other expense (income) for revised severance estimates			0.8
Proprietary Products | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	602.5	567.0	1,803.6	1,822.0
Operating profit	181.6	188.6	546.5	615.9
Contract-Manufactured Products | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	144.9	120.0	414.2	356.5
Operating profit	$ 21.0	$ 14.7	$ 53.3	$ 48.0