Revenue and Segment Disclosures - Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Aug. 31, 2021	Aug. 31, 2020	Aug. 31, 2021	Aug. 31, 2020	Feb. 28, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Gross Profit	$ 112	$ 199	$ 226	$ 342
Cost of sales	63	60	123	123
Research and development	58	57	115	114
Selling, marketing and administration	83	79	156	169
Amortization	45	46	91	92
Impairment of long-lived assets	0	21	0	21
Impairment of goodwill	0	0	0	594	$ 594
Debentures fair value adjustment	67	18	63	19
Investment loss, net	(1)	(5)	(3)	(5)
Loss before income taxes	(142)	(27)	(202)	(672)
Total Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Gross Profit	113	200	228	345
Cost of sales	62	59	121	120
Segment Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Cost of sales	1	1	2	3
Investment loss, net	$ (1)	$ (5)	$ (3)	$ (5)