Business and Geographic Segment Information (Schedule of Segment Reporting) (Details) (USD $) In Millions	3 Months Ended				9 Months Ended				12 Months Ended
	May 01, 2011		May 02, 2010		May 01, 2011		May 02, 2010		Aug. 01, 2010	Aug. 02, 2009	Aug. 03, 2008
Net sales, Total	$ 1,813		$ 1,802		$ 6,112		$ 6,158		$ 7,676	$ 7,586	$ 7,998
Earnings before interest and taxes, Total	307		292		1,110		1,161
Restructuring charges			12				12
U.S. Soup, Sauces and Beverages [Member]
Net sales	778		848		2,903		3,056
Earnings before interest and taxes	193		214		708		804
Baking and Snacking [Member]
Net sales	527		477		1,597		1,496
Earnings before interest and taxes	82		76		263		249
International Soup, Sauces and Beverages [Member]
Net sales	354		331		1,147		1,142
Earnings before interest and taxes	41		37		161		155
North America Foodservice [Member]
Net sales	154		146		465		464
Earnings before interest and taxes	22		(3)	[1]	66		40	[1]
Restructuring charges			12				12
Corporate [Member]
Earnings before interest and taxes	$ (31)	[2]	$ (32)	[2]	$ (88)	[2]	$ (87)	[2]

[1] Earnings before interest and taxes of the North America Foodservice segment included $12 of restructuring charges in the three- and nine-month periods ended May 2, 2010. See Note 6 for additional information on restructuring charges.

[2] Represents unallocated corporate expenses.