Goodwill And Intangible Assets (Goodwill) (Details) - USD ($) $ in Millions		3 Months Ended
		Oct. 29, 2017	Jul. 30, 2017
Goodwill [Line Items]
Beginning Balance	[1]	$ 2,115
Foreign currency translation adjustment		(29)
Ending Balance	[1]	2,086
Americas Simple Meals and Beverages [Member]
Goodwill [Line Items]
Beginning Balance		780
Foreign currency translation adjustment		(3)
Ending Balance		777
Global Biscuits and Snacks [Member]
Goodwill [Line Items]
Beginning Balance		795
Foreign currency translation adjustment		(26)
Ending Balance		769
Campbell Fresh [Member]
Goodwill [Line Items]
Beginning Balance	[1]	540
Foreign currency translation adjustment		0
Ending Balance	[1]	540
Goodwill, Accumulated Impairment Loss		$ (297)	$ (297)

[1] The Campbell Fresh segment includes accumulated impairment charges of $297 as of October 29, 2017, and July 30, 2017.