Consolidated Statement of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net sales	$ 7,106	$ 8,620	$ 8,143
Costs and expenses
Cost of sales	6,485	7,489	6,986
Selling, general and administrative expenses	421	508	499
Amortization of intangibles	13	12	8
Restructuring charges, net	34	29	25
Impairment of goodwill and indefinite-lived intangible asset	(51)	(6)	(20)
Gain on disposal group held for sale			3
Pension settlement charges		(259)
Other income (expense), net	22	(25)	(29)
Earnings before interest and income taxes	124	292	579
Loss on extinguishment of debt	(8)	(9)
Interest income	9	10	11
Interest expense	138	122	96
Earnings (loss) before income taxes	(13)	171	494
Income tax expense (benefit)	58	(32)	78
Equity in earnings of affiliates	20	30	24
Net income (loss)	(51)	233	440
Less: Noncontrolling interests net income	10	13	13
Less: Redeemable noncontrolling interests net loss	(30)	(6)
Net income (loss) attributable to the parent company	$ (31)	$ 226	$ 427
Net income (loss) per share available to common stockholders
Basic (in dollars per share)	$ (0.21)	$ 1.57	$ 2.94
Diluted (in dollars per share)	$ (0.21)	$ 1.56	$ 2.91
Weighted-average common shares outstanding
Basic (in shares)	144.5	144.0	145.0
Diluted (in shares)	144.5	145.1	146.5