Basis of Presentation Total Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Oct. 28, 2017	Jan. 28, 2017	Oct. 29, 2016	Jan. 30, 2016
Schedule of cash, cash equivalents and restricted cash [Line Items]
Cash and cash equivalents	$ 1,103	$ 2,240	$ 1,341
Restricted cash included in Other current assets	197	193	193
Cash, cash equivalents and restricted cash at end of period	$ 1,300	$ 2,433	$ 1,534	$ 2,161