Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Condensed Consolidated Statements of Operations
Net sales	$ 569.7	$ 951.8	$ 1,423.2	$ 1,964.9
Cost of sales	576.8	865.6	1,360.6	1,781.2
Gross profit (loss)	(7.1)	86.2	62.6	183.7
Selling, general and administrative expenses	58.3	71.4	135.8	140.3
Equity in earnings of unconsolidated affiliates	14.4	40.3	24.2	72.5
Impairment charges			38.3
Operating income (loss)	(51.0)	55.1	(87.3)	115.9
Interest expense, net	11.7	9.9	22.0	20.1
Other expense, net	1.0	1.5	2.6	5.5
Income (loss) before income taxes	(63.7)	43.7	(111.9)	90.3
Provision for (benefit from) income taxes	64.7	15.7	52.8	26.5
Net income (loss)	$ (128.4)	$ 28.0	$ (164.7)	$ 63.8
Weighted average shares- basic	38.2	40.8	38.4	41.0
Net income (loss) per share- basic	$ (3.36)	$ 0.69	$ (4.29)	$ 1.56
Weighted average shares- diluted	38.2	41.1	38.4	41.5
Net income (loss) per share- diluted	$ (3.36)	$ 0.68	$ (4.29)	$ 1.54