CONSOLIDATED STATEMENT OF OPERATIONS - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Net sales	$ 6,554	$ 7,476	$ 7,196
Costs of sales	5,412	5,592	5,298
Gross margin	1,142	1,884	1,898
Selling expenses	84	88	87
General and administrative expenses	348	318	310
Charges for integration and restructuring, closures and asset impairments (Note 18)	80	2	194
Charges (recoveries) for product remediation, net (Note 19)	(68)	0	290
Other operating costs (income), net (Note 20)	47	82	(114)
Operating income	651	1,394	1,131
Non-operating pension and other postretirement benefit costs (Note 9)	(516)	(272)	(62)
Interest income and other	30	60	40
Interest expense, net of capitalized interest	(378)	(375)	(393)
Earnings (loss) before income taxes	(213)	807	716
Income taxes (Note 21)	137	(59)	(134)
Net earnings (loss)	$ (76)	$ 748	$ 582
Basic and diluted earnings (loss) per share (Note 5):	$ (0.10)	$ 0.99	$ 0.77
Weighted average shares outstanding (in thousands) (Note 5):
Basic	745,897	754,556	753,085
Diluted	745,897	756,827	756,666