Goodwill And Intangible Assets (Goodwill) (Details) - USD ($) $ in Millions		6 Months Ended
		Jan. 27, 2019	Jul. 29, 2018
Goodwill [Line Items]
Beginning Balance		$ 4,580
Goodwill, Purchase Accounting Adjustments		140
Goodwill, Acquired During Period		21
Foreign currency translation adjustment		(20)
Ending Balance		4,721
Meals and Beverages [Member]
Goodwill [Line Items]
Beginning Balance		978
Goodwill, Purchase Accounting Adjustments		0
Goodwill, Acquired During Period		0
Foreign currency translation adjustment		(1)
Ending Balance		977
Global Biscuits and Snacks [Member]
Goodwill [Line Items]
Beginning Balance		3,602
Goodwill, Purchase Accounting Adjustments		140
Goodwill, Acquired During Period		21
Foreign currency translation adjustment		(19)
Ending Balance		3,744
Campbell Fresh [Member]
Goodwill [Line Items]
Beginning Balance	[1]	0
Goodwill, Purchase Accounting Adjustments		0
Goodwill, Acquired During Period		0
Foreign currency translation adjustment		0
Ending Balance	[1]	0
Goodwill, Accumulated Impairment Loss		$ (837)	$ (837)

[1] The balance of goodwill is reflected net of accumulated impairment charges of $837 as of January 27, 2019 and July 29, 2018, respectively, related to the Bolthouse Farms carrot and carrot ingredients reporting unit, the deli reporting unit, and the Bolthouse Farms refrigerated beverages and salad dressings reporting unit.