Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 31, 2021	Aug. 31, 2020	Aug. 31, 2021	Aug. 31, 2020
Revenue
Revenues	$ 175	$ 259	$ 349	$ 465
Cost of sales
Cost of sales	63	60	123	123
Gross margin	112	199	226	342
Operating expenses
Research and development	58	57	115	114
Selling, marketing and administration	83	79	156	169
Amortization	45	46	91	92
Impairment of goodwill	0	0	0	594
Impairment of long-lived assets	0	21	0	21
Debentures fair value adjustment	67	18	63	19
Total operating expenses	253	221	425	1,009
Operating loss	(141)	(22)	(199)	(667)
Investment loss, net	(1)	(5)	(3)	(5)
Loss before income taxes	(142)	(27)	(202)	(672)
Provision for (recovery of) income taxes (note 5)	2	(4)	4	(13)
Net loss	$ (144)	$ (23)	$ (206)	$ (659)
Loss per share (note 8)
Earnings (Loss) Per Share, Basic (in usd per share)	$ (0.25)	$ (0.04)	$ (0.36)	$ (1.18)
Earnings (Loss) Per Share, Diluted (in usd per share)	$ (0.25)	$ (0.04)	$ (0.36)	$ (1.18)