Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 671	$ 309
Receivables, less allowances of $5 and $6	450	380
Inventories (NOTE 9)	600	630
Prepaid expenses	53	50
Income and other taxes receivable	49	54
Current assets held for sale (NOTE 3)		1,133
Total current assets	1,823	2,556
Property, plant and equipment, net	2,022	2,023
Operating lease right-of-use assets (NOTE 10)	55	59
Intangible assets, net	29	29
Other assets	192	189
Total assets	4,121	4,856
Current liabilities
Bank indebtedness	4
Trade and other payables	504	484
Income and other taxes payable	16	15
Operating lease liabilities due within one year (NOTE 10)	19	20
Long-term debt due within one year	301	13
Current liabilities held for sale (NOTE 3)		295
Total current liabilities	844	827
Long-term debt	503	1,084
Operating lease liabilities (NOTE 10)	47	50
Deferred income taxes and other	324	321
Other liabilities and deferred credits	312	314
Commitments and contingencies (NOTE 14)
Shareholders' equity (NOTE 13)
Common stock $0.01 par value; authorized 2,000,000,000 shares; issued 65,001,104 and 65,001,104 shares	1	1
Additional paid-in capital	1,493	1,717
Retained earnings	817	846
Accumulated other comprehensive loss	(220)	(304)
Total shareholders' equity	2,091	2,260
Total liabilities and shareholders' equity	$ 4,121	$ 4,856