Restructuring And Other Charges - Additional Information (Detail) (USD $)	12 Months Ended						3 Months Ended			12 Months Ended
	Jul. 27, 2013	Jul. 28, 2012	Jul. 30, 2011	Jul. 27, 2013 July Fiscal 2011 Restructuring Plan	Jul. 30, 2011 Sale of Juarez Manufacturing Operations	Jul. 30, 2011 Restructuring, Consumer product lines	Oct. 26, 2013 August Fiscal 2014 Restructuring Plan positions	Oct. 26, 2013 Expected Minimum August Fiscal 2014 Restructuring Plan	Oct. 26, 2013 Expected Maximum August Fiscal 2014 Restructuring Plan	Jul. 26, 2014 Expected Maximum August Fiscal 2014 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Pre-tax restructuring charges				$ 1,100,000,000
Reduction of goodwill					63,000,000
Impairment of Intangible assets	0	12,000,000	164,000,000			8,000,000
Restructuring charges	15,541,000,000	14,505,000,000	13,647,000,000			124,000,000
Restructuring and Related Cost, Number of Positions Eliminated							4,000
Restructuring and Related Cost, Number of Positions Eliminated, Percent							5.00%
Restructuring and Related Cost, Expected Cost								$ 250,000,000	$ 300,000,000	$ 550,000,000