SCHEDULE II – VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Millions		12 Months Ended
		Jan. 27, 2019	Jan. 28, 2018	Jan. 29, 2017
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		$ 4	$ 3	$ 2
Additions	[1]	0	1	1
Deductions	[1]	(2)	0	0
Balance at End of Period		2	4	3
Sales return allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		9	10	9
Additions	[2]	21	15	9
Deductions	[3]	(22)	(16)	(8)
Balance at End of Period		8	9	10
Deferred tax valuation allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		469	353	272
Additions	[4]	93	116	81
Deductions		0	0	0
Balance at End of Period		$ 562	$ 469	$ 353

[1] Additions represent allowance for doubtful accounts charged to expense and deductions represent amounts recorded as reduction to expense upon reassessment of allowance for doubtful accounts at period end.

[2] Represents allowance for sales returns estimated at the time revenue is recognized primarily based on historical return rates and is charged as a reduction to revenue.

[3] Represents sales returns.

[4] Represents change in valuation allowance primarily related to state and certain foreign deferred tax assets that management has determined not likely to be realized due, in part, to projections of future taxable income of the respective jurisdictions. Refer to Note 13 of the Notes to the Consolidated Financial Statements in Part IV, Item 15 of this Annual Report on Form 10-K for additional information.