Business And Geographic Segment Information (Schedule of Segment Reporting - Capital Expenditures) (Details) - USD ($) $ in Millions		12 Months Ended
		Jul. 30, 2017	Jul. 31, 2016	Aug. 02, 2015
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment		$ 338	$ 341	$ 380
Americas Simple Meals and Beverages [Member]
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment		117	105	137
Global Biscuits and Snacks [Member]
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment		127	122	137
Campbell Fresh [Member]
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment		47	74	82
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment	[1]	$ 47	$ 40	$ 24

[1] Represents primarily corporate offices.