Business And Geographic Segment Information (Schedule of Segment Reporting - Capital Expenditures) (Details) - USD ($) $ in Millions		12 Months Ended
		Jul. 31, 2016	Aug. 02, 2015	Aug. 03, 2014
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment		$ 341	$ 380	$ 347
Americas Simple Meals and Beverages [Member]
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment		105	137	136
Global Biscuits and Snacks [Member]
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment		122	137	127
Campbell Fresh [Member]
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment		74	82	55
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment	[1]	40	24	28
Discontinued Operations [Member]
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment		$ 0	$ 0	$ 1

[1] Represents primarily corporate offices.