Consolidated Statement Of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net sales	$ 2,054	$ 1,840	$ 4,192	$ 3,541
Costs and expenses
Cost of sales	1,746	1,563	3,577	3,000
Selling, general and administrative expenses	134	133	264	253
Amortization of intangibles	2	3	4	5
Restructuring charges, net	7	10	8	12
Impairment of indefinite-lived intangible asset	(20)		(20)
Adjustment in fair value of disposal group held for sale	3		3
Other expense, net	(10)	(1)	(10)	(12)
Earnings before interest and income taxes	138	130	312	259
Loss on extinguishment of debt		(6)		(6)
Interest income	2	2	5	5
Interest expense	23	27	47	54
Earnings before income taxes	117	99	270	204
Income tax expense (benefit)	(4)	31	44	61
Equity in earnings of affiliates	6	5	12	10
Net income	127	73	238	153
Less: Noncontrolling interests net income	3	5	5	10
Less: Redeemable noncontrolling interests net income (loss)		(3)	1	(3)
Net income attributable to the parent company	$ 124	$ 71	$ 232	$ 146
Net income per share available to common stockholders
Basic	$ 0.85	$ 0.48	$ 1.60	$ 1.00
Diluted	$ 0.85	$ 0.47	$ 1.58	$ 0.99
Weighted-average common shares outstanding - Basic	145.1	144.8	145.3	144.7
Weighted-average common shares outstanding - Diluted	146.5	146.2	147.0	146.1
Cash dividends declared per share	$ 0.10	$ 0.06	$ 0.20	$ 0.12