Segment Information Geographic Segments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total Sales	$ 2,310	$ 2,828	$ 2,734
Operating Income (Loss)	(20)	526	533
Other operating credits and charges, net and gain (loss) on sales of and impairments of long-lived assets	(93)	(9)	(12)
General corporate expense, loss on early debt extinguishment, other income (expense) and interest, net	(33)	(114)	(131)
Income (loss) from continuing operations before income taxes, extraordinary items, noncontrolling interest	(23)	521	510
Provision for income taxes	13	(122)	(119)
Income from continuing operations	(10)	399	391
Net Income (Loss) Attributable to Noncontrolling Interest	(5)	0	0
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	(5)	399	391
Disclosure on Geographic Areas, Long-Lived Assets in Entity's Country of Domicile	1,034	1,032	938
South America
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total Sales	159	161	155
UNITED STATES
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total Sales	1,968	2,409	2,307
Operating Income (Loss)	95	475	462
Disclosure on Geographic Areas, Long-Lived Assets in Entity's Country of Domicile	570	542	533
CANADA
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total Sales	653	861	704
Operating Income (Loss)	(17)	138	167
Disclosure on Geographic Areas, Long-Lived Assets in Entity's Country of Domicile	390	408	336
South America
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total Sales	178	174	165
Operating Income (Loss)	25	31	24
Disclosure on Geographic Areas, Long-Lived Assets in Entity's Country of Domicile	74	82	69
Intersegment sales
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total Sales	$ (489)	$ (616)	$ (442)