Business And Geographic Segment Information (Schedule Of Segment Reporting - Segment Assets) (Details) (USD $) In Millions	Jul. 31, 2011		Aug. 01, 2010		Aug. 02, 2009
Segment Assets	$ 6,862		$ 6,276		$ 6,056
U.S. Simple Meals And U.S. Beverages [Member]
Segment Assets	2,129		2,146		2,168
Global Baking And Snacking [Member]
Segment Assets	1,982		1,710		1,628
International Simple Meals And Beverages [Member]
Segment Assets	1,539		1,396		1,474
North America Foodservice [Member]
Segment Assets	350		360		377
Corporate [Member]
Segment Assets	$ 862	[1]	$ 664	[1]	$ 409	[1]

[1] Represents unallocated corporate expenses and unallocated assets.