Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Condensed Consolidated Statements of Operations
Net sales	$ 879.0	$ 1,178.1	$ 2,837.9	$ 3,990.3
Cost of sales	847.7	1,217.6	2,715.9	3,714.8
Gross profit (loss)	31.3	(39.5)	122.0	275.5
Selling, general and administrative expenses	66.6	80.5	205.1	262.8
Equity in earnings of unconsolidated affiliate	19.0	22.8	49.2	83.8
Impairment and other charges	0.1	1.9	349.5	39.5
Operating income (loss)	(16.4)	(99.1)	(383.4)	57.0
Interest expense, net	46.6	30.4	125.1	77.7
(Gain) loss on extinguishment of long-term debt	6.3	(0.8)	6.3	(0.8)
Other expense (income), net	(13.2)	1.3	(19.0)	2.4
Loss from continuing operations before income taxes	(56.1)	(130.0)	(495.8)	(22.3)
Provision for (benefit from) income taxes	(17.7)	(12.1)	(59.5)	41.4
Net loss from continuing operations	(38.4)	(117.9)	(436.3)	(63.7)
Net loss from discontinued operations, net of income taxes		(1.9)		(1.9)
Net loss	$ (38.4)	$ (119.8)	$ (436.3)	$ (65.6)
Earnings Per Share
Weighted average shares- basic	35.2	35.2	35.1	36.3
Net loss per share- basic: continuing operations	$ (1.09)	$ (3.35)	$ (12.42)	$ (1.76)
Net loss per share- basic: discontinued operations		(0.06)		(0.05)
Net income (loss) per share- basic	$ (1.09)	$ (3.41)	$ (12.42)	$ (1.81)
Weighted average shares- diluted	35.2	35.2	35.1	36.3
Net loss per share- diluted: continuing operations	$ (1.09)	$ (3.35)	$ (12.42)	$ (1.76)
Net loss per share- diluted: discontinued operations		(0.06)		(0.05)
Net loss per share- diluted	$ (1.09)	$ (3.41)	$ (12.42)	$ (1.81)