CONSOLIDATED STATEMENT OF OPERATIONS - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Net sales (Note 3)	$ 1,939	$ 1,997	$ 3,735	$ 3,878
Costs of sales	1,535	1,528	2,976	3,040
Gross margin	404	469	759	838
Selling expenses	22	22	44	44
General and administrative expenses	116	108	236	209
Other operating (income) costs, net (Note 13)	(4)	20	13	30
Operating income	270	319	466	555
Non-operating pension and other post-employment benefit costs (Note 6)	(10)	(12)	(21)	(21)
Interest income and other	13	18	29	30
Interest expense, net of capitalized interest	(67)	(70)	(134)	(136)
Earnings before income taxes	206	255	340	428
Income taxes (Note 14)	(33)	(25)	(53)	(47)
Net earnings	$ 173	$ 230	$ 287	$ 381
Earnings per share, basic (Note 4)	$ 0.24	$ 0.31	$ 0.39	$ 0.52
Earnings per share, diluted (Note 4)	$ 0.24	$ 0.31	$ 0.39	$ 0.52
Weighted average shares outstanding (in thousands) (Note 4):
Basic	729,026	732,021	729,534	732,599
Diluted	729,341	732,362	729,950	732,961