Restructuring Charges (Schedule Of Pre-Tax Charge And Remaining Costs 2013 Iniatives) (Details) (2013 Initiatives [Member], USD $) In Millions, unless otherwise specified	4 Months Ended
	Jan. 27, 2013
Restructuring Cost and Reserve [Line Items]
Total Program	$ 115
Recognized as of end of period	(85)
Remaining Costs to be Recognized	30
Severance Pay And Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Total Program	25
Recognized as of end of period	(22)
Remaining Costs to be Recognized	3
Asset Impairment Accelerated Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Total Program	75
Recognized as of end of period	(61)
Remaining Costs to be Recognized	14
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Total Program	15
Recognized as of end of period	(2)
Remaining Costs to be Recognized	$ 13