Property And Equipment, Net (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Sep. 02, 2015	Aug. 01, 2015	Aug. 02, 2014	Aug. 01, 2015	Aug. 02, 2014	Aug. 02, 2015	Jan. 31, 2015
Property, Plant and Equipment [Line Items]
Property and Equipment, at Cost		$ 5,565	$ 5,304	$ 5,565	$ 5,304		$ 5,480
Accumulated Depreciation and Amortization		(3,290)	(3,140)	(3,290)	(3,140)		(3,203)
Property and Equipment, Net		2,275	2,164	2,275	2,164		$ 2,277
Depreciation		113	$ 109	224	$ 219
Sale Leaseback Transaction, Net Book Value		118		$ 118
Sale Leaseback Transaction, Gross Proceeds, Investing Activities		$ 118
Subsequent Event [Member]
Property, Plant and Equipment [Line Items]
Sale Leaseback Transaction, Net Book Value						$ 41
Sale Leaseback Transaction, Gross Proceeds, Investing Activities	$ 42