Restructuring Charges and Cost Savings Initiatives (Schedule Of Restructuring Charges Associated With Each Reportable Segment) (Details) - 2015 Initiatives [Member] $ in Millions	3 Months Ended	6 Months Ended
	Jan. 31, 2016 USD ($)	Jan. 31, 2016 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 19	$ 55
Restructuring and Related Cost, Cost Incurred to Date	179	179
Americas Simple Meals and Beverages [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	6	16
Restructuring and Related Cost, Cost Incurred to Date	70	70
Global Biscuits and Snacks [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	6	20
Restructuring and Related Cost, Cost Incurred to Date	64	64
Campbell Fresh [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	0	0
Restructuring and Related Cost, Cost Incurred to Date	1	1
Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	7	19
Restructuring and Related Cost, Cost Incurred to Date	$ 44	$ 44