Business Combinations, Definite-Lived Intangible Assets, Net and Goodwill (Intangible Assets Detail) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	May 01, 2020	May 03, 2019	Jan. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,815		$ 1,922
Accumulated Amortization	(709)		(750)
Net Book Value	1,106		1,172
Amortization expense	80	$ 69
Purchased technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	921		1,030
Accumulated Amortization	(412)		(488)
Net Book Value	509		542
Customer relationships and customer lists
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	741		739
Accumulated Amortization	(227)		(200)
Net Book Value	514		539
Trademarks and tradenames
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	132		131
Accumulated Amortization	(64)		(58)
Net Book Value	68		73
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	21		22
Accumulated Amortization	(6)		(4)
Net Book Value	$ 15		$ 18
Weighted Average | Purchased technology
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Useful Lives (in years)	5 years 8 months 12 days		5 years 8 months 12 days
Weighted Average | Customer relationships and customer lists
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Useful Lives (in years)	11 years 4 months 24 days		11 years 4 months 24 days
Weighted Average | Trademarks and tradenames
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Useful Lives (in years)	7 years 7 months 6 days		7 years 7 months 6 days
Weighted Average | Other
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Useful Lives (in years)	2 years		2 years