Consolidated Statements of Shareholders' Equity - USD ($) $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment [Member]	Capital Stock and Additional Paid-In Capital [Member]	Capital Stock and Additional Paid-In Capital [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Retained Earnings (Deficit) [Member]	Retained Earnings (Deficit) [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Other Comprehensive Income (Loss) [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]
Beginning Balance at Feb. 28, 2018	$ 2,505		$ 2,560		$ (45)		$ (10)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	93				93
Other comprehensive income (loss)	(4)						(4)
Cumulative impact of adoption of ASU 606	(86)				(86)
Cumulative impact of adoption of ASU 2016-01					6		(6)
Stock-based compensation	67		67
Value Pre-combination service of replacement awards included in purchase consideration	21		21
Shares issued:
Exercise of stock options	1		1
Exchange shares related to Cylance acquisition	35		35
Employee share purchase plan	4		4
Ending 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)
Ending Balance (Accounting Standards Update 2016-13 [Member]) at Feb. 28, 2021				$ 0				$ 0