Acquisition Acquisition (Details) - USD ($) $ in Millions		3 Months Ended	9 Months Ended
		Nov. 03, 2018	Nov. 03, 2018	Oct. 28, 2017
Business Combinations [Abstract]
Transaction costs		$ 13	$ 13
Business Acquisition [Line Items]
Current assets		34	34
Goodwill		496
Intangible assets	[1]	371	371
Other assets		27	27
Total assets acquired		928	928
Accrued liabilities		56	56
Long-term liabilities		72	72
Total liabilities assumed		128	128
Total purchase price		800
Less: Cash acquired		8
Total purchase price, net of cash acquired		792	792	$ 0
Customer relationships
Business Acquisition [Line Items]
Intangible assets		$ 235	235
Intangible asset useful life		5 years
Tradename
Business Acquisition [Line Items]
Intangible assets		$ 61	61
Intangible asset useful life		8 years
Developed technology
Business Acquisition [Line Items]
Intangible assets		$ 52	52
Intangible asset useful life		5 years
Commercial customer relationships
Business Acquisition [Line Items]
Intangible assets		$ 23	$ 23
Intangible asset useful life		10 years

[1] The components of Intangible assets included consumer customer relationships of $235 million (amortized over 5 years), tradename of $61 million (amortized over 8 years), developed technology of $52 million (amortized over 5 years) and commercial customer relationships of $23 million (amortized over 10 years).