STATEMENTS OF CONSOLIDATED INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Net sales	$ 747.7	$ 743.6	$ 2,258.6	$ 2,365.3
Costs and expenses:
Cost of products sold, excluding depreciation and amortization	671.8	665.2	2,005.2	2,114.7
Depreciation and amortization	29.0	27.2	86.8	79.9
Selling, general, administrative, research and development	28.8	30.5	93.0	92.4
Restructuring costs	0.7	1.6	7.6	4.2
Other operating charges, net			0.4
Total costs and expenses	730.3	724.5	2,193.0	2,291.2
Operating income	17.4	19.1	65.6	74.1
Other (expense) income:
Interest expense	(10.7)	(11.4)	(33.3)	(35.4)
Other income (expense), net - Note 9	8.7	(2.2)	19.1	8.9
Income before income taxes	15.4	5.5	51.4	47.6
Income tax provision	(3.4)	(0.1)	(11.7)	(8.0)
Net income	$ 12.0	$ 5.4	$ 39.7	$ 39.6
Net income per common share:
Basic	$ 0.75	$ 0.34	$ 2.47	$ 2.48
Diluted	$ 0.74	$ 0.34	$ 2.44	$ 2.46
Weighted-average number of common shares outstanding (in thousands):
Basic	16,087	15,995	16,062	15,970
Diluted	16,335	16,154	16,291	16,110