Derivative Instruments Changes in Fair Value Hedges on Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016
Net Investment Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax	$ (19)	$ 8	$ (11)	$ (16)
Interest Rate Swap [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate swap gain	14	12	3	2
Long-term debt loss	(14)	(12)	(3)	(2)
Net impact	0	0	0	0
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Selling, General and Administrative Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on foreign currency derivative instruments not designated as hedging instruments	$ (4)	$ 2	$ (3)	$ (3)