STATEMENTS OF CONSOLIDATED (LOSS) INCOME - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Net sales	$ 2,622.0	$ 1,172.7	$ 1,514.1
Costs and expenses:
Cost of products sold, excluding depreciation and amortization and other items	2,348.1	941.3	1,215.2
Depreciation and amortization	91.5	52.2	49.1
Selling, general, administrative, research and development	118.8	91.2	98.0
Goodwill impairment			25.2
Restructuring (benefit) costs	(0.8)	7.5
Other operating charges (income), net		(0.6)	0.9
Total costs and expenses	2,557.6	1,091.6	1,388.4
Operating income	64.4	81.1	125.7
Other expense:
Interest expense	(49.5)	(40.9)	(24.6)
Other expense, net – Notes 9 and 13	(38.9)	(1.4)	(20.7)
(Loss) income before income taxes	(24.0)	38.8	80.4
Income tax benefit (provision)	5.5	(10.0)	(18.4)
Net (loss) income	$ (18.5)	$ 28.8	$ 62.0
Net (loss) income per common share:
Basic	$ (1.17)	$ 1.82	$ 3.88
Diluted	$ (1.17)	$ 1.81	$ 3.83
Weighted-average number of common shares outstanding (in thousands):
Basic	15,836	15,802	15,997
Diluted	15,836	15,913	16,203