Comprehensive Income (Loss) (Components Of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 28, 2012	Jul. 30, 2011	Jul. 28, 2012	Jul. 30, 2011
Accumulated Other Comprehensive Income [Roll Forward]
Foreign Currency Translation, Beginning Balance			$ (8)	$ (7)
Current-period Other Comprehensive Income, Foreign Currency Translation			1	(1)
Foreign Currency Translation, Ending Balance	(7)	(8)	(7)	(8)
Cash Flow Hedges, Beginning Balance			8	8
Current-period Other Comprehensive Income (Loss), Cash Flow Hedges			8	(2)
Cash Flow Hedges, Ending Balance	16	6	16	6
Accumulated Other Comprehensive Income (Loss), Beginning Balance			0	1
Current-period Other Comprehensive Income (Loss)	4	(2)	9	(3)
Accumulated Other Comprehensive Income (Loss), Ending Balance	$ 9	$ (2)	$ 9	$ (2)