CONSOLIDATED INTERIM STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Net sales (Note 4)	$ 997	$ 745
Cost of goods sold	801	607
Gross profit	196	138
Selling, general and administrative expenses	55	57
Other expense, net (Note 6)	1	16
Interest expense (excludes contractual interest for the three months ended March 31, 2021 of $9 million) (Note 2)	21	16
Non-operating expense (income)	26	(4)
Reorganization items, net (Note 2)	174
(Loss) income before taxes	(81)	53
Tax expense (Note 7)	24	1
Net (loss) income	$ (105)	$ 52
Earnings (loss) per common share
Basic	$ (1.38)	$ 0.69
Diluted	$ (1.38)	$ 0.68
Weighted average common shares outstanding
Basic	75,904,898	75,040,932
Diluted	75,904,898	76,261,545