Segment Information - Segment Financial Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Operating Profit	$ 676.0	$ 734.0	$ 752.3
Stock-based compensation expense	(23.3)	(23.7)	(37.5)
Amortization of acquisition-related intangible assets	(3.6)	(3.7)	(5.4)
Loss on disposal of plant	11.6	0.0	0.0
Asset impairments	9.6	6.2	5.6
Interest expense (income) and other nonoperating expense (income), net	(22.0)	54.1	3.4
Income before income taxes and equity in net income of affiliated companies	698.0	679.9	748.9
Severance and benefits	(2.8)	8.7	0.6
Asset-related charges	0.0	15.3	0.0
Asset impairments	9.6	6.2	5.6
Impairment of cost method investments			4.6
Gain on sale of investments			0.3
Assets	3,829.5	3,616.8
Depreciation and Amortization	137.3	120.6	122.3
Capital Expenditures	362.0	284.6	253.4
Operating Segments
Segment Reporting Information [Line Items]
Operating Profit	782.2	844.8	863.3
Corporate and Unallocated
Segment Reporting Information [Line Items]
Operating Profit	(106.2)	(110.8)	(111.0)
Stock-based compensation expense	(23.3)	(23.7)	(37.5)
Corporate general costs	(68.3)	(59.1)	(63.4)
Restructuring and other charges	2.0	(23.8)	(2.2)
Amortization of acquisition-related intangible assets	(0.7)	(0.7)	(0.8)
Cost investment activity	4.3	3.5	4.3
Loss on disposal of plant	11.6	0.0	0.0
Asset impairments	0.0	0.0	2.8
Severance and benefits		8.7
Asset-related charges		15.3
Asset impairments	0.0	0.0	2.8
Impairment of cost method investments			4.6
Gain on sale of investments			0.3
Assets	672.9	558.2
Depreciation and Amortization	4.0	4.7	7.4
Capital Expenditures	12.7	13.3	8.8
Corporate and Unallocated | 2022 Restructuring Plan
Segment Reporting Information [Line Items]
Severance and benefits	(2.8)
Inventory write down	0.8
Corporate and Unallocated | Cost of goods and services sold
Segment Reporting Information [Line Items]
Asset impairments			1.9
Asset impairments			1.9
Corporate and Unallocated | Selling, General and Administrative Expenses
Segment Reporting Information [Line Items]
Asset impairments			0.9
Asset impairments			0.9
Corporate and Unallocated | Second Quarter 2020 Acquisiiton
Segment Reporting Information [Line Items]
Amortization of acquisition-related intangible assets		(0.7)	(0.8)
Proprietary Products | Operating Segments
Segment Reporting Information [Line Items]
Operating Profit	710.1	784.4	796.1
Assets	2,629.1	2,578.3
Depreciation and Amortization	112.9	96.9	93.8
Capital Expenditures	259.1	237.3	218.0
Contract-Manufactured Products | Operating Segments
Segment Reporting Information [Line Items]
Operating Profit	72.1	60.4	67.2
Assets	527.5	480.3
Depreciation and Amortization	20.4	19.0	21.1
Capital Expenditures	$ 90.2	$ 34.0	$ 26.6