Additional Financial Statement Information Cash and Cash Equivalents (Details) - USD ($) $ in Millions		Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015	Feb. 01, 2014
Additional Financial Statement Information [Abstract]
Cash	[1]	$ 1,086	$ 853
Bank certificates of deposit and time deposits		416	313
Money market funds		256	204
Domestic commercial paper		25	0
Cash equivalents		697	517
Cash and cash equivalents		1,783	1,370	$ 1,515	$ 1,510
Amount in transit from banks for customer credit and debit card transactions		$ 58	$ 64

[1] Cash includes $58 million and $64 million of amounts in transit from banks for customer credit card and debit card transactions as of January 28, 2017 and January 30, 2016, respectively.