Financial Instruments (Schedule Of Changes In Cash Flow Hedges In Other Comprehensive Income (Loss)) (Details) (USD $) In Millions, unless otherwise specified							3 Months Ended		6 Months Ended		3 Months Ended				6 Months Ended				3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Jan. 29, 2012	Oct. 30, 2011	Jul. 31, 2011	Jan. 30, 2011	Oct. 31, 2010	Aug. 01, 2010	Jan. 29, 2012 Foreign Exchange Forward Contracts [Member]	Jan. 30, 2011 Foreign Exchange Forward Contracts [Member]	Jan. 29, 2012 Foreign Exchange Forward Contracts [Member]	Jan. 30, 2011 Foreign Exchange Forward Contracts [Member]	Jan. 29, 2012 Foreign Exchange Forward Contracts [Member] Other Expenses/Income [Member]	Jan. 30, 2011 Foreign Exchange Forward Contracts [Member] Other Expenses/Income [Member]	Jan. 29, 2012 Foreign Exchange Forward Contracts [Member] Cost Of Products Sold [Member]	Jan. 30, 2011 Foreign Exchange Forward Contracts [Member] Cost Of Products Sold [Member]	Jan. 29, 2012 Foreign Exchange Forward Contracts [Member] Cost Of Products Sold [Member]	Jan. 30, 2011 Foreign Exchange Forward Contracts [Member] Cost Of Products Sold [Member]	Jan. 29, 2012 Cross-Currency Swap Contracts [Member]	Jan. 30, 2011 Cross-Currency Swap Contracts [Member]	Jan. 29, 2012 Interest Rate Swap [Member] Interest Expense [Member]	Jan. 30, 2011 Interest Rate Swap [Member] Interest Expense [Member]	Jan. 29, 2012 Interest Rate Swap [Member] Interest Expense [Member]	Jan. 30, 2011 Interest Rate Swap [Member] Interest Expense [Member]	Jan. 29, 2012 Commodity Derivative Contracts [Member]	Jan. 30, 2011 Commodity Derivative Contracts [Member]	Jan. 29, 2012 Commodity Derivative Contracts [Member]	Jan. 30, 2011 Commodity Derivative Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
OCI derivative gain/(loss) at beginning of year	$ (19)	$ (22)	$ (31)	$ (25)	$ (27)	$ (28)
Derivative instruments gain (loss) recognized in OCI							(2)	0	5	(3)							(1)	0					0	3	0	3
Derivative instrument gain (loss) reclassified											(1)	(1)	5	0	6	2			1	0	2	1
OCI derivative gain/(loss) at end of quarter	$ (19)	$ (22)	$ (31)	$ (25)	$ (27)	$ (28)