Business And Geographic Segment Information (Schedule Of Segment Reporting - Earnings Before Interest And Taxes) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 29, 2012		Jul. 31, 2011		Aug. 01, 2010
Segment Reporting Information [Line Items]
Earnings before interest and taxes	$ 1,212		$ 1,279		$ 1,348
U.S. Simple Meals [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	658		657		737
Global Baking And Snacking [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	315		355		322
International Simple Meals And Beverages [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	153		185		161
U.S. Beverages [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	134		182		206
North America Foodservice [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	85		82		55
Corporate [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	(123)	[1]	(119)	[1]	(121)	[1]
Restructuring Charges [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	$ (10)	[2]	$ (63)	[2]	$ (12)	[2]

[1] Represents unallocated corporate expenses.

[2] See Note 6 for additional information.