Comprehensive Income (Components Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jul. 29, 2017	Jul. 30, 2016	Apr. 30, 2016	Jul. 29, 2017	Jul. 30, 2016
Other Comprehensive Income (Loss), before Reclassifications, before Tax				$ (8)	$ (26)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax				5	5
Other Comprehensive Income (Loss), Tax				2	3
Accumulated Other Comprehensive Income (Loss), Beginning Balance			$ 40	12	40
Accumulated Other Comprehensive Income (Loss), Ending Balance	$ 11	$ 22		11	22
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	(12)	5		(5)	(9)
Other Comprehensive Income (Loss), Net of Tax	(7)	(20)		(1)	(18)
Accumulated Translation Adjustment [Member]
Other Comprehensive Income (Loss), before Reclassifications, before Tax				10	(10)
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	19	18		19	18
Other Comprehensive Income (Loss), Net of Tax				10	(10)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Other Comprehensive Income (Loss), before Reclassifications, before Tax				(18)	(11)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax				5	9
Other Comprehensive Income (Loss), Tax				2	0
Accumulated Other Comprehensive Income (Loss), Beginning Balance			4	3	4
Accumulated Other Comprehensive Income (Loss), Ending Balance	(8)	2		(8)	2
Other Comprehensive Income (Loss), Net of Tax				(11)	(2)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Other Comprehensive Income (Loss), before Reclassifications, before Tax				0	(5)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax				0	(4)
Other Comprehensive Income (Loss), Tax				0	3
Accumulated Other Comprehensive Income (Loss), Beginning Balance			8	0	8
Accumulated Other Comprehensive Income (Loss), Ending Balance	0	2		0	2
Other Comprehensive Income (Loss), Net of Tax				0	(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		0	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	12	(5)		5	9
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	(1)	0		(3)	0
Other Income [Member]
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	$ 13	$ (5)		$ 8	$ 9