Segment Information (Schedule Of Segment Reporting - Earnings Before Interest And Taxes) (Details) - USD ($) $ in Millions		3 Months Ended
		Oct. 29, 2017	Oct. 30, 2016
Segment Reporting Information [Line Items]
Earnings before interest and taxes		$ 412	$ 457
Americas Simple Meals and Beverages [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes		328	380
Global Biscuits and Snacks [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes		120	115
Campbell Fresh [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes		(6)	1
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	[1]	(28)	(38)
Defined Benefit Plan, Actuarial Gain (Loss)		(14)	(20)
Restructuring and Related Cost, Incurred Cost		(17)	(8)
Restructuring Charges [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	[2]	$ (2)	$ (1)

[1] Represents unallocated items. Pension and postretirement benefit mark-to-market adjustments are included in Corporate. There were gains of $14 and losses of $20 in the three-month periods ended October 29, 2017, and October 30, 2016, respectively. Costs related to the implementation of our new organizational structure and cost savings initiatives were $17 and $8 in the three-month periods ended October 29, 2017, and October 30, 2016, respectively.

[2] See Note 7 for additional information.