Summary of Significant Accounting Policies - Gift Cards (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 30, 2016	Jan. 31, 2015	Feb. 01, 2014
Accounting Policies [Abstract]
Gift Card Redeemability, Determination Period	24 months
Gift card breakage income	$ 65	$ 19	$ 53