Business and Summary of Accounting Policies Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Feb. 03, 2018	Oct. 28, 2017	Jul. 29, 2017	Apr. 29, 2017	Jan. 28, 2017	Oct. 29, 2016	Jul. 30, 2016	Apr. 30, 2016	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Numerator—net income	$ 468	$ 117	$ 208	$ 66	$ 252	$ 146	$ 140	$ 17	$ 859	$ 556	$ 673
Denominator - weighted average shares, Basic	165	166	168	170	174	177	180	183	167	178	193
Impact of dilutive share-based awards									1	1	2
Weighted average shares, Diluted	167	166	168	171	175	177	181	184	168	179	195
Basic	$ 2.83	$ 0.70	$ 1.24	$ 0.39	$ 1.45	$ 0.83	$ 0.77	$ 0.09	$ 5.14	$ 3.12	$ 3.48
Diluted	$ 2.81	$ 0.70	$ 1.24	$ 0.39	$ 1.44	$ 0.83	$ 0.77	$ 0.09	$ 5.12	$ 3.11	$ 3.46
Excluded options as the impact of such options was antidilutive									2	3	1