Business And Geographic Segment Information (Schedule Of Segment Reporting - Earnings Before Interest And Taxes) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jan. 29, 2017	Jan. 31, 2016	Jan. 29, 2017	Jan. 31, 2016
Segment Reporting Information [Line Items]
Earnings before interest and taxes		$ 205	$ 414	$ 662	$ 729
Goodwill and Intangible Asset Impairment				(212)	0
Americas Simple Meals and Beverages [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes		313	290	696	653
Global Biscuits and Snacks [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes		135	141	247	255
Campbell Fresh [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes		(3)	21	(2)	39
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	[1]	(241)	(29)	(279)	(188)
Defined Benefit Plan, Actuarial Gain (Loss)			7	(20)	(121)
Goodwill and Intangible Asset Impairment		(212)		(212)
Corporate, Non-Segment [Member] | Other Cost Savings Implementation Costs [Member]
Segment Reporting Information [Line Items]
Restructuring and Related Cost, Incurred Cost			7	11	22
Restructuring Charges [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	[2]	$ 1	$ (9)	$ 0	$ (30)

[1] Represents unallocated items. Pension and postretirement benefit mark-to-market adjustments are included in Corporate. Gains were $7 in the three-month period ended January 31, 2016, and losses were $20 and $121 in the six-month periods ended January 29, 2017, and January 31, 2016, respectively. Costs related to the implementation of our new organizational structure and cost savings initiatives were $7 in the three-month period ended January 31, 2016, and $11 and $22 in the six-month periods ended January 29, 2017, and January 31, 2016, respectively.

[2] See Note 6 for additional information.