Derivative Instruments (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Aug. 01, 2015	Aug. 02, 2014	Aug. 01, 2015	Aug. 02, 2014	Jan. 31, 2015
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		$ 34	$ 1	$ 34	$ 1	$ 31
Derivative Liability, Fair Value, Gross Liability		0	0	0	0
Notional Amount		1,120	95	1,120	95	554
Proceeds from divestiture of businesses				92	37
Net Investment Hedging [Member]
Derivatives, Fair Value [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax		15		6
Derivative Asset, Fair Value, Gross Asset	[1]	17		17		19
Derivative Liability, Fair Value, Gross Liability	[1]	0		$ 0
Contract term				12 months
Notional Amount		207	0	$ 207	0	197
Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	[2]	13		13		1
Derivative Liability, Fair Value, Gross Liability	[2]	0		0
Notional Amount		750	0	750	0	145
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	[1]	4	1	4	1	11
Derivative Liability, Fair Value, Gross Liability	[1]	0		$ 0
Contract term				12 months
Notional Amount		163	95	$ 163	95	$ 212
Gain (loss) on foreign currency derivative instruments not designated as hedging instruments		$ 1	$ (1)	$ (4)	$ (4)

[1] The fair value is recorded in other current assets or accrued liabilities.

[2] The fair value is recorded in other assets or long-term liabilities.