Comprehensive Income (Components Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Oct. 28, 2017	Oct. 29, 2016	Apr. 30, 2016	Oct. 28, 2017	Oct. 29, 2016
Other Comprehensive Income (Loss), before Reclassifications, before Tax				$ 1	$ (32)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax				1	1
Other Comprehensive Income (Loss), Tax				1	3
Accumulated Other Comprehensive Income (Loss), Beginning Balance			$ 40	12	40
Accumulated Other Comprehensive Income (Loss), Ending Balance	$ 15	$ 12		15	12
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	0	0	(3)	0	(3)
Available-for-sale Securities, Gross Realized Gains				0	(4)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	(4)	(4)		1	5
Other Comprehensive Income (Loss), Net of Tax	4	(10)		3	(28)
Accumulated Translation Adjustment [Member]
Other Comprehensive Income (Loss), before Reclassifications, before Tax				8	(25)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax				0	0
Other Comprehensive Income (Loss), Tax				0	0
Accumulated Other Comprehensive Income (Loss), Beginning Balance			28	9	28
Accumulated Other Comprehensive Income (Loss), Ending Balance	17	3		17	3
Other Comprehensive Income (Loss), Net of Tax				8	(25)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Other Comprehensive Income (Loss), before Reclassifications, before Tax				(8)	(1)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax				1	5
Other Comprehensive Income (Loss), Tax				1	(1)
Accumulated Other Comprehensive Income (Loss), Beginning Balance			4	3	4
Accumulated Other Comprehensive Income (Loss), Ending Balance	(3)	7		(3)	7
Other Comprehensive Income (Loss), Net of Tax				(6)	3
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Other Comprehensive Income (Loss), before Reclassifications, before Tax				1	(6)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax				0	(4)
Other Comprehensive Income (Loss), Tax				0	4
Accumulated Other Comprehensive Income (Loss), Beginning Balance			8	0	8
Accumulated Other Comprehensive Income (Loss), Ending Balance	1	2		1	2
Other Comprehensive Income (Loss), Net of Tax				1	(6)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	0	0		1	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	(4)	(4)		1	5
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	0	0		0	1
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	0	0		0	(3)
Available-for-sale Securities, Gross Realized Gains	0	0	$ (4)	0	(4)
Cost of Goods Sold, Buying and Occupancy [Member]
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	0	0		(3)	0
Other Income [Member]
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	$ (4)	$ (4)		$ 3	$ 5