STATEMENTS OF CONSOLIDATED INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Net sales	$ 948.8	$ 324.0
Costs and expenses:
Cost of products sold, excluding depreciation and amortization and other items	865.9	262.5
Depreciation and amortization	27.5	13.5
Selling, general, administrative, research and development	30.2	31.8
Restructuring costs (benefit)		(0.7)
Total costs and expenses	923.6	307.1
Operating income	25.2	16.9
Other expense:
Interest expense	(12.2)	(12.3)
Other expense, net – Note 8	(1.6)	(0.4)
Income before income taxes	11.4	4.2
Income tax (provision) benefit	(3.3)	0.3
Net income	$ 8.1	$ 4.5
Net income per common share:
Basic	$ 0.51	$ 0.28
Diluted	$ 0.51	$ 0.28
Weighted-average number of common shares outstanding (in thousands):
Basic	15,866	15,805
Diluted	16,038	15,987