Business And Geographic Segment Information (Schedule Of Segment Reporting - Earnings Before Interest And Taxes) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Oct. 28, 2012	Oct. 30, 2011
Segment Reporting Information [Line Items]
Earnings before interest and taxes	$ 385	$ 416
U.S. Simple Meals [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	274	260
Global Baking And Snacking [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	85	88
International Simple Meals And Beverages [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	47	43
U.S. Beverages [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	30	30
Bolthouse and Foodservice [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	34	27
Corporate [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	(63)	(30)
Restructuring Charges [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	$ (22)	$ (2)