Consolidated Statements of Shareholders' Equity - USD ($) $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Capital Stock and Additional Paid-in Capital	Capital Stock and Additional Paid-in Capital Cumulative Effect, Period of Adoption, Adjustment	Deficit	Deficit Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss Cumulative Effect, Period of Adoption, Adjustment
Beginning Balance at Feb. 29, 2020	$ 2,529		$ 2,760		$ (198)		$ (33)
Beginning Balance (Accounting Standards Update 2016-13) at Feb. 29, 2020		$ (4)
Beginning Balance (Accounting Standards Update 2016-02) at Feb. 29, 2020		$ (4)		$ 0		$ (4)		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(789)				(789)
Other comprehensive income (loss)	24						24
Stock-based compensation	33		33
Exercise of stock options	3		3
Employee share purchase plan	7		7
Ending Balance at Nov. 30, 2020	1,803		2,803		(991)		(9)
Beginning Balance at Aug. 31, 2020	1,914		2,788		(861)		(13)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(130)				(130)
Other comprehensive income (loss)	4						4
Stock-based compensation	11		11
Exercise of stock options	1		1
Employee share purchase plan	3		3
Ending Balance at Nov. 30, 2020	1,803		2,803		(991)		(9)
Beginning Balance at Feb. 28, 2021	1,504		2,823		(1,306)		(13)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(132)				(132)
Other comprehensive income (loss)	(7)						(7)
Stock-based compensation	25		25
Exercise of stock options	2		2
Employee share purchase plan	7		7
Ending Balance at Nov. 30, 2021	1,399		2,857		(1,438)		(20)
Beginning Balance at Aug. 31, 2021	1,318		2,845		(1,512)		(15)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	74				74
Other comprehensive income (loss)	(5)						(5)
Stock-based compensation	8		8
Employee share purchase plan	4		4
Ending Balance at Nov. 30, 2021	$ 1,399		$ 2,857		$ (1,438)		$ (20)