Business And Geographic Segment Information Business And Geographic Segment Information (Schedule Of Segment Reporting - Depreciation and Amortization) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 29, 2012		Jul. 31, 2011		Aug. 01, 2010
Segment Reporting Information [Line Items]
Depreciation and Amortization	$ 262		$ 268		$ 251
U.S. Simple Meals [Member]
Segment Reporting Information [Line Items]
Depreciation and Amortization	88		87		86
Global Baking And Snacking [Member]
Segment Reporting Information [Line Items]
Depreciation and Amortization	81		82		75
International Simple Meals And Beverages [Member]
Segment Reporting Information [Line Items]
Depreciation and Amortization	37		42		35
U.S. Beverages [Member]
Segment Reporting Information [Line Items]
Depreciation and Amortization	21		20		21
North America Foodservice [Member]
Segment Reporting Information [Line Items]
Depreciation and Amortization	13		13		13
Corporate [Member]
Segment Reporting Information [Line Items]
Depreciation and Amortization	$ 22	[1]	$ 24	[1]	$ 21	[1]

[1] Represents primarily corporate offices.