Business And Geographic Segment Information (Schedule Of Segment Reporting - Net Sales) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Jul. 31, 2016	May 01, 2016	Jan. 31, 2016	Nov. 01, 2015	Aug. 02, 2015	May 03, 2015	Feb. 01, 2015	Nov. 02, 2014	Jul. 31, 2016	Aug. 02, 2015	Aug. 03, 2014
Segment Reporting Information [Line Items]
Net sales	$ 1,687	$ 1,870	$ 2,201	$ 2,203	$ 1,693	$ 1,900	$ 2,234	$ 2,255	$ 7,961	$ 8,082	$ 8,268
Americas Simple Meals and Beverages [Member]
Segment Reporting Information [Line Items]
Net sales									4,380	4,483	4,588
Global Biscuits and Snacks [Member]
Segment Reporting Information [Line Items]
Net sales									2,564	2,631	2,725
Campbell Fresh [Member]
Segment Reporting Information [Line Items]
Net sales									$ 1,017	$ 968	$ 955