Restructuring Charges (Schedule Of Pre-Tax Charge And Remaining Costs, 2008 Initiatives) (Details) (2008 Initiatives [Member], USD $) In Millions	12 Months Ended	36 Months Ended
	Aug. 03, 2008	Aug. 01, 2010
Change in Estimate		$ (14)	[1]
Recognized Costs		216
Severance Pay And Benefits [Member]
Total Program	62
Change in Estimate		(4)	[1]
Recognized Costs		58
Asset Impairment/Accelerated Depreciation [Member]
Total Program	158
Change in Estimate		(4)	[1]
Recognized Costs		154
Other Exit Costs [Member]
Total Program	10
Change in Estimate		(6)	[1]
Recognized Costs		4
Total Program [Member]
Total Program	$ 230

[1] Primarily due to foreign currency translation.