Business And Geographic Segment Information (Schedule Of Segment Reporting - Net Sales) (Details) - USD ($) $ in Millions	3 Months Ended
Oct. 30, 2016	Nov. 01, 2015
Segment Reporting Information [Line Items]
Net sales	$ 2,202	$ 2,203
Americas Simple Meals and Beverages [Member]
Segment Reporting Information [Line Items]
Net sales	1,297	1,302
Global Biscuits and Snacks [Member]
Segment Reporting Information [Line Items]
Net sales	671	652
Campbell Fresh [Member]
Segment Reporting Information [Line Items]
Net sales	$ 234	$ 249

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Name:	us-gaap_SalesRevenueGoodsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration