Restructuring Charges -2014 Restructuring, Allocation of Expenses (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 01, 2015	Aug. 02, 2014	Aug. 01, 2015	Aug. 02, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 23	$ 88	$ 64	$ 102
2014 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	23		66
2014 Restructuring Plan [Member] | Cost of Goods Sold and Occupancy Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	9		40
2014 Restructuring Plan [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 14		$ 26