Business And Geographic Segment Information (Schedule Of Segment Reporting - Net Sales) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Jul. 28, 2013	Apr. 28, 2013	Jan. 27, 2013	Oct. 28, 2012	Jul. 29, 2012	Apr. 29, 2012	Jan. 29, 2012	Oct. 30, 2011	Jul. 28, 2013	Jul. 29, 2012	Jul. 31, 2011
Segment Reporting Information [Line Items]
Net sales	$ 1,723	$ 1,962	$ 2,162	$ 2,205	$ 1,519	$ 1,698	$ 1,943	$ 2,015	$ 8,052	$ 7,175	$ 7,143
U.S. Simple Meals [Member]
Segment Reporting Information [Line Items]
Net sales									2,849	2,726	2,751
Global Baking And Snacking [Member]
Segment Reporting Information [Line Items]
Net sales									2,273	2,193	2,156
International Simple Meals And Beverages [Member]
Segment Reporting Information [Line Items]
Net sales									869	872	887
U.S. Beverages [Member]
Segment Reporting Information [Line Items]
Net sales									742	774	759
Bolthouse and Foodservice [Member]
Segment Reporting Information [Line Items]
Net sales									$ 1,319	$ 610	$ 590