STATEMENTS OF CONSOLIDATED LOSS (UNAUDITED) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Net sales	$ 954.2	$ 741.0	$ 1,903.0	$ 1,065.0
Costs and expenses:
Cost of products sold, excluding depreciation and amortization and other items	898.4	673.3	1,764.3	935.8
Depreciation and amortization	27.1	25.8	54.6	39.3
Selling, general, administrative, research and development	27.5	30.9	57.7	62.7
Restructuring costs (benefit)		(0.1)		(0.8)
Other operating charges, net	3.2		3.2
Total costs and expenses	956.2	729.9	1,879.8	1,037.0
Operating (loss) income	(2.0)	11.1	23.2	28.0
Other expense:
Interest expense	(12.2)	(12.4)	(24.4)	(24.7)
Other expense, net – Note 8	(3.7)	(36.6)	(5.3)	(37.0)
Loss before income taxes	(17.9)	(37.9)	(6.5)	(33.7)
Income tax benefit	4.1	15.5	0.8	15.8
Net loss	$ (13.8)	$ (22.4)	$ (5.7)	$ (17.9)
Net loss per common share:
Basic	$ (0.87)	$ (1.42)	$ (0.36)	$ (1.13)
Diluted	$ (0.87)	$ (1.42)	$ (0.36)	$ (1.13)
Weighted-average number of common shares outstanding (in thousands):
Basic	15,899	15,835	15,883	15,820
Diluted	15,899	15,835	15,883	15,820