Consolidated Statements of Earnings (Loss) and Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Sales	$ 1,010	$ 871
Operating expenses
Cost of sales, excluding depreciation and amortization	832	751
Depreciation and amortization	66	50
Selling, general and administrative	69	64
Impairment of long-lived assets (NOTE 10)		6
Closure and restructuring costs (NOTE 10)		3
Asset conversion costs (NOTE 10)	13	8
Transaction costs (NOTE 4)	3
Other operating loss (income), net	2	(2)
Operating expenses	985	880
Operating income (loss) from continuing operations	25	(9)
Interest expense, net	21	15
Non-service components of net periodic benefit cost (NOTE 6)	(9)	(6)
Earnings (loss) before income taxes	13	(18)
Income tax expense (benefit) (NOTE 7)	3	(3)
Earnings (loss) from continuing operations	10	(15)
Earnings (loss) from discontinued operations, net of taxes (NOTE 3)	13	(14)
Net earnings (loss)	23	(29)
Net derivative gains on cash flow hedges:
Net gains arising during the period, net of tax of $(5) (2021 – $(3))	17	9
Less: Reclassification adjustment for gains included in net earnings (loss), net of tax of nil (2021 – $(1))	(2)	(2)
Foreign currency translation adjustments	13	72
Change in unrecognized gains and prior service cost related to pension and post-retirement benefit plans, net of tax of nil (2021 – $(1))		5
Other comprehensive income	28	84
Comprehensive income	$ 51	$ 55