Goodwill And Intangible Assets (Goodwill) (Details) $ in Millions	12 Months Ended
	Jul. 30, 2017 USD ($)		Jul. 31, 2016 USD ($)
Goodwill [Line Items]
Beginning Balance	$ 2,263	[1]	$ 2,344
Goodwill, Impairment Loss	(191)		(106)
Foreign currency translation adjustment	43		25
Ending Balance	2,115	[1]	2,263	[1]
Goodwill, Accumulated Impairment Loss	(297)		(106)
Americas Simple Meals and Beverages [Member]
Goodwill [Line Items]
Beginning Balance	775		775
Goodwill, Impairment Loss	0		0
Foreign currency translation adjustment	5		0
Ending Balance	780		775
Global Biscuits and Snacks [Member]
Goodwill [Line Items]
Beginning Balance	757		732
Goodwill, Impairment Loss	0		0
Foreign currency translation adjustment	38		25
Ending Balance	795		757
Campbell Fresh [Member]
Goodwill [Line Items]
Beginning Balance	731	[1]	837
Goodwill, Impairment Loss	191		106
Foreign currency translation adjustment	0		0
Ending Balance	540	[1]	731	[1]
Goodwill, Accumulated Impairment Loss	$ (297)		$ (106)

[1] The balance of goodwill is reflected net of accumulated impairment charges of $297 as of July 30, 2017 and $106 as of July 31, 2016, respectively.