Consolidated Statements of Shareholders' Equity - USD ($) $ in Millions	Total	Capital Stock and Additional Paid-in Capital	Deficit	Accumulated Other Comprehensive Loss
Beginning Balance at Feb. 28, 2021	$ 1,504	$ 2,823	$ (1,306)	$ (13)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(206)		(206)
Other comprehensive income (loss)	(2)			(2)
Stock-based compensation	17	17
Exercise of stock options	2	2
Employee share purchase plan	3	3
Ending Balance at Aug. 31, 2021	1,318	2,845	(1,512)	(15)
Beginning Balance at May. 31, 2021	1,456	2,834	(1,368)	(10)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(144)		(144)
Other comprehensive income (loss)	(5)			(5)
Stock-based compensation	10	10
Exercise of stock options	1	1
Ending Balance at Aug. 31, 2021	1,318	2,845	(1,512)	(15)
Beginning Balance at Feb. 28, 2022	1,556	2,869	(1,294)	(19)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(235)		(235)
Other comprehensive income (loss)	(9)			(9)
Stock-based compensation	15	15
Exercise of stock options		0
Employee share purchase plan	3	3
Ending Balance at Aug. 31, 2022	1,330	2,887	(1,529)	(28)
Beginning Balance at May. 31, 2022	1,385	2,880	(1,475)	(20)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(54)		(54)
Other comprehensive income (loss)	(8)			(8)
Stock-based compensation	7	7
Ending Balance at Aug. 31, 2022	$ 1,330	$ 2,887	$ (1,529)	$ (28)