Consolidated Statements of Shareholders' Equity - USD ($) $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment [Member]	Capital Stock and Additional Paid-In Capital [Member]	Retained Earnings (Deficit) [Member]	Retained Earnings (Deficit) [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Feb. 28, 2019	$ 2,636		$ 2,688	$ (32)		$ (20)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(152)			(152)
Other comprehensive income (loss)	(13)					(13)
Cumulative impact of adoption of ASC 842	(14)			(14)
Stock-based compensation	63		63
Shares issued:
Exercise of stock options	3		3
Employee share purchase plan	6		6
Ending Balance at Feb. 29, 2020	2,529		2,760	(198)		(33)
Ending Balance (Accounting Standards Update 2016-13 [Member]) at Feb. 29, 2020		$ (4)			$ (4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(1,104)			(1,104)
Other comprehensive income (loss)	20					20
Stock-based compensation	44		44
Shares issued:
Exercise of stock options	12		12
Employee share purchase plan	7		7
Ending Balance at Feb. 28, 2021	1,504		2,823	(1,306)		(13)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	12			12
Other comprehensive income (loss)	(6)					(6)
Stock-based compensation	36		36
Shares issued:
Exercise of stock options	3		3
Employee share purchase plan	7		7
Ending Balance at Feb. 28, 2022	$ 1,556		$ 2,869	$ (1,294)		$ (19)