Realignment (Narrative) (Details) $ in Millions		3 Months Ended			9 Months Ended
		Oct. 30, 2020 USD ($) position	Nov. 01, 2019 USD ($)	[3]	Oct. 30, 2020 USD ($)	Nov. 01, 2019 USD ($)	[3]	Jan. 31, 2020 USD ($)
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated | position		330
Realignment Expense	[1],[2]	$ 44	$ 0		$ 47	$ 0
Severance-related costs
Restructuring Cost and Reserve [Line Items]
Realignment Expense		44			47
Restructuring reserve		$ 25			$ 25			$ 74

[1] Adjusted to reflect the recast of prior period information due to the Pivotal Software, Inc. (“Pivotal”) acquisition in fiscal 2020, which was accounted for as a transaction between entities under common control (refer to Note A).

[2] Effective the fourth quarter of fiscal 2020, revenue recognized from subscription and SaaS offerings, as well as the related cost of subscription and SaaS revenue, are being presented separately (refer to Note A).

[3] Includes stock-based compensation as follows:Cost of license revenue$— $— $1 $1Cost of subscription and SaaS revenue4 3 13 10Cost of services revenue25 20 74 58Research and development140 118 397 328Sales and marketing85 76 243 204General and administrative50 39 141 104