Derivative Instruments (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Oct. 31, 2015	Nov. 01, 2014	Oct. 31, 2015	Nov. 01, 2014	Jan. 31, 2015
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		$ 24	$ 4	$ 24	$ 4	$ 31
Derivative Liability, Fair Value, Gross Liability		0	0	0	0
Notional Amount		1,167	217	1,167	217	554
Proceeds from divestiture of businesses				102	38
Net Investment Hedging [Member]
Derivatives, Fair Value [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax		0	1	6	1
Derivative Asset, Fair Value, Gross Asset	[1]	12	1	12	1	19
Derivative Liability, Fair Value, Gross Liability	[1]	0		$ 0
Contract term				12 months
Notional Amount		222	106	$ 222	106	197
Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	[2]	10		10		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]	2	3	2	3	11
Derivative Liability, Fair Value, Gross Liability	[1]	0		$ 0
Contract term				12 months
Notional Amount		195	111	$ 195	111	$ 212
Gain (loss) on foreign currency derivative instruments not designated as hedging instruments		$ 1	$ 4	$ (3)	$ 0

[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.