Restructuring Charges Restructuring Charges (Schedule Of Pre-Tax Charges And Remaining Costs 2011 Iniative) (Details) (2011 Initiatives [Member], USD $) In Millions, unless otherwise specified	25 Months Ended
	Jul. 28, 2013
Restructuring Cost and Reserve [Line Items]
Total Program	$ 74
Recognized as of end of period	(73)
Restructuring and Related Cost, Expected Cost Remaining	1
Severance Pay And Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Total Program	41
Recognized as of end of period	(41)
Restructuring and Related Cost, Expected Cost Remaining	0
Asset Impairment Accelerated Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Total Program	23
Recognized as of end of period	(23)
Restructuring and Related Cost, Expected Cost Remaining	0
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Total Program	10
Recognized as of end of period	(9)
Restructuring and Related Cost, Expected Cost Remaining	$ 1