Organization and Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 27, 2019	Jan. 28, 2018	Jan. 29, 2017	Jan. 28, 2019
Accounting Policies [Abstract]
Advertising expense	$ 21	$ 25	$ 17
Deferred tax assets, valuation allowance	$ 562	$ 469
Building
Property, Plant and Equipment [Line Items]
Useful life	30 years
Minimum
Finite-Lived Intangible Assets [Line Items]
Useful life	3 years
Property, Plant and Equipment [Line Items]
Useful life	3 years
Minimum | Building
Property, Plant and Equipment [Line Items]
Useful life	25 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Useful life	10 years
Property, Plant and Equipment [Line Items]
Useful life	5 years
Maximum | Building
Property, Plant and Equipment [Line Items]
Useful life	30 years
Significant Customer | Accounts Receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk (as percent)	19.00%
Significant Customers | Accounts Receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk (as percent)		28.00%
Accounting Standards Update 2016-02 | Scenario, Plan
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease liabilities				$ 500
Operating lease assets				$ 500