Restructuring Charges Restructuring Charges (Schedule Of Pre-Tax Charges And Remaining Costs 2011 Iniative) (Details) (2011 Initiatives [Member], USD $) In Millions, unless otherwise specified	16 Months Ended
	Oct. 28, 2012
Restructuring Cost and Reserve [Line Items]
Total Program	$ 75
Recognized as of end of period	(73)
Remaining Costs to be Recognized	2
Severance Pay And Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Total Program	43
Recognized as of end of period	(41)
Remaining Costs to be Recognized	2
Other Exit Costs [Member]
Restructuring Cost and Reserve [Line Items]
Total Program	9
Recognized as of end of period	(9)
Remaining Costs to be Recognized	0
Asset Impairment/Accelerated Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Total Program	23
Recognized as of end of period	(23)
Remaining Costs to be Recognized	$ 0