Net Income Per Share - Basic and Diluted Net Income Per Share Calculation (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended			6 Months Ended
	Aug. 04, 2018	Jul. 29, 2017		Aug. 04, 2018	Jul. 29, 2017	[1]
Net Income Per Section [Abstract]
Numerator—Net income	$ 292	$ 208	[1]	$ 368	$ 274
Denominator—Weighted average shares: Basic	165	168
Denominator—Weighted average shares: Impact of dilutive stock-based awards	1
Denominator—Weighted average shares: Diluted	166	168
Antidilutive shares		3
Net income per share: Basic	$ 1.77	$ 1.24	[1]	$ 2.23	$ 1.62
Net income per share: Diluted	$ 1.76	$ 1.24	[1]	$ 2.21	$ 1.62

[1] Refer to Note 2 for details on the adoption of the new revenue recognition accounting standard and the impact on previously reported results.