Restructuring Charges - Summary (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								11 Months Ended	12 Months Ended
	Jan. 31, 2015	Nov. 01, 2014	Aug. 02, 2014	May 03, 2014	Feb. 01, 2014	Nov. 02, 2013	Aug. 03, 2013	May 04, 2013	Feb. 02, 2013	Jan. 31, 2015	Feb. 01, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ (7)	$ 5	$ 5	$ 2	$ 113	$ 27	$ 4	$ 5	$ 449	$ 23	$ 259
Restructuring Program 2013 Renew Blue [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Restructuring charges									171	29	165
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges									278	(6)	94
Continuing Operations [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges									415	5	149
Continuing Operations [Member] | Restructuring Program 2013 Renew Blue [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Restructuring charges									171	11	155
Continuing Operations [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges									244	(6)	(6)
Discontinued Operations [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges									34	18	110
Discontinued Operations [Member] | Restructuring Program 2013 Renew Blue [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Restructuring charges									0	18	10
Discontinued Operations [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges									$ 34	$ 0	$ 100