Business And Geographic Segment Information (Schedule Of Segment Reporting - Net Sales) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Feb. 01, 2015	Jan. 26, 2014	Feb. 01, 2015	Jan. 26, 2014
Segment Reporting Information [Line Items]
Net sales	$ 2,234	$ 2,281	$ 4,489	$ 4,446
U.S. Simple Meals [Member]
Segment Reporting Information [Line Items]
Net sales	867	894	1,795	1,754
Global Baking And Snacking [Member]
Segment Reporting Information [Line Items]
Net sales	640	639	1,267	1,248
International Simple Meals And Beverages [Member]
Segment Reporting Information [Line Items]
Net sales	194	213	383	406
U.S. Beverages [Member]
Segment Reporting Information [Line Items]
Net sales	169	176	337	349
Bolthouse and Foodservice [Member]
Segment Reporting Information [Line Items]
Net sales	$ 364	$ 359	$ 707	$ 689