Business Combinations, Definite-Lived Intangible Assets, Net and Goodwill (Intangible Assets Detail) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 30, 2020	Nov. 01, 2019	Oct. 30, 2020	Nov. 01, 2019	Jan. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,864		$ 1,864		$ 1,922
Accumulated Amortization	(805)		(805)		(750)
Net Book Value	1,059		1,059		1,172
Amortization expense	83	$ 74	244	$ 213
Purchased technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	978		978		1,030
Accumulated Amortization	(461)		(461)		(488)
Net Book Value	517		517		542
Customer relationships and customer lists
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	733		733		739
Accumulated Amortization	(259)		(259)		(200)
Net Book Value	474		474		539
Trademarks and tradenames
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	132		132		131
Accumulated Amortization	(73)		(73)		(58)
Net Book Value	59		59		73
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	21		21		22
Accumulated Amortization	(12)		(12)		(4)
Net Book Value	$ 9		$ 9		$ 18
Weighted Average | Purchased technology
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Useful Lives (in years)			5 years 4 months 24 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