401(k) Plan (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
401(K) Plan [Line Items]
Expense related to Company 401(k) plan contributions	$ 110	$ 92	$ 62
Matching Contributions [Member]
401(K) Plan [Line Items]
Expense related to Company 401(k) plan contributions	94
Profit-Sharing Contributions [Member]
401(K) Plan [Line Items]
Expense related to Company 401(k) plan contributions	$ 16