Goodwill And Intangible Assets (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended		12 Months Ended
	Jun. 29, 2015	Jul. 31, 2016	Aug. 02, 2015	Jul. 31, 2016	Aug. 02, 2015	Aug. 03, 2014
Finite-Lived Intangible Assets [Line Items]
Goodwill, Acquired During Period					$ 116
Goodwill, Impairment Loss				$ 106
Amortization of Intangible Assets				20	17	$ 18
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months		$ 20		20
Finite-Lived Intangible Assets, Amortization Expense, Year Two		15		15
Finite Lived Intangible Assets, Amortization Expense, Year Three		15		15
Finite Lived Intangible Assets, Amortization Expense, Year Four		15		15
Finite Lived Intangible Assets, Amortization Expense, Year Five		15		$ 15
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life				5 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life				20 years
Campbell Fresh [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill, Acquired During Period					116
Goodwill, Impairment Loss				$ 106
Campbell Fresh [Member] | Bolthouse Farms carrot and carrot ingredients reporting unit [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill, Impairment Loss		106
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		$ 35
Global Biscuits and Snacks [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill, Acquired During Period					0
Goodwill, Impairment Loss				$ 0
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)			$ 6		$ 6
Garden Fresh Gourmet [Member]
Finite-Lived Intangible Assets [Line Items]
Payments to Acquire Businesses, Gross	$ 232
Garden Fresh Gourmet [Member] | Campbell Fresh [Member]
Finite-Lived Intangible Assets [Line Items]
Payments to Acquire Businesses, Gross	232
Goodwill, Acquired During Period	$ 116