Consolidated Statement Of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Net sales	$ 2,306	$ 2,054	$ 4,469	$ 4,192
Costs and expenses
Cost of sales	1,980	1,746	3,843	3,577
Selling, general and administrative expenses	140	134	276	264
Amortization of intangibles	4	2	6	4
Restructuring charges, net	9	7	18	8
Impairment of indefinite-lived intangible asset		(20)		(20)
Adjustment in fair value of disposal group held for sale		3		3
Pension settlement charge	(258)		(258)
Other expense, net	(10)	(10)	(23)	(10)
Earnings (loss) before interest and income taxes	(95)	138	45	312
Interest income	3	2	5	5
Interest expense	34	23	61	47
Earnings (loss) before income taxes	(126)	117	(11)	270
Income tax expense (benefit)	(52)	(4)	(32)	44
Equity in earnings of affiliates	8	6	14	12
Net income (loss)	(66)	127	35	238
Less: Noncontrolling interests net income	2	3	6	5
Less: Redeemable noncontrolling interests net income (loss)			(1)	1
Net income (loss) attributable to the parent company	$ (68)	$ 124	$ 30	$ 232
Net income (loss) per share available to common stockholders
Basic	$ (0.47)	$ 0.85	$ 0.21	$ 1.60
Diluted	$ (0.47)	$ 0.85	$ 0.21	$ 1.58
Weighted-average common shares outstanding - Basic	144.0	145.1	143.9	145.3
Weighted-average common shares outstanding - Diluted	144.0	146.5	144.8	147.0