Restructuring Charges and Cost Savings Initiatives (Schedule Of Restructuring Charges Associated With Each Reportable Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2016	Aug. 02, 2015		Aug. 03, 2014
Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost				$ 3
2015 Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 82	$ 124
Restructuring and Related Cost, Cost Incurred to Date	206
2015 Initiatives [Member] | Americas Simple Meals and Beverages [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	17
Restructuring and Related Cost, Cost Incurred to Date	71
2015 Initiatives [Member] | Global Biscuits and Snacks [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	22
Restructuring and Related Cost, Cost Incurred to Date	66
2015 Initiatives [Member] | Campbell Fresh [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	1
Restructuring and Related Cost, Cost Incurred to Date	2
2015 Initiatives [Member] | Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	42
Restructuring and Related Cost, Cost Incurred to Date	67
2014 Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	(4)
Restructuring and Related Cost, Cost Incurred to Date	50	$ 54	[1]
2014 Initiatives [Member] | Americas Simple Meals and Beverages [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	(1)
Restructuring and Related Cost, Cost Incurred to Date	13
2014 Initiatives [Member] | Global Biscuits and Snacks [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	(3)
Restructuring and Related Cost, Cost Incurred to Date	35
2014 Initiatives [Member] | Campbell Fresh [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	0
Restructuring and Related Cost, Cost Incurred to Date	1
2014 Initiatives [Member] | Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	0
Restructuring and Related Cost, Cost Incurred to Date	$ 1

[1] Recognized as of August 2, 2015.