Goodwill And Intangible Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended									12 Months Ended
	Jul. 28, 2013	Jul. 29, 2012	Jul. 31, 2011	Jul. 28, 2013 Minimum [Member]	Jul. 28, 2013 Maximum [Member]	Jul. 28, 2013 Bolthouse Farms [Member]	Aug. 06, 2012 Bolthouse Farms [Member]	Jul. 28, 2013 Plum Organics [Member]	Jun. 13, 2013 Plum Organics [Member]	Jul. 28, 2013 Segment, Discontinued Operations [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Net (Excluding Goodwill)	$ 1,021	$ 496
Business Acquisition, Cost of Acquired Entity, Purchase Price							1,561		249
Business Acquisition, Purchase Price Allocation, Goodwill Amount						692	692	128	128
Goodwill, Impairment Loss	(360)									(360)
Disposal Group, Including Discontinued Operation, Goodwill	110
Disposal Group, Including Discontinued Operation, Intangible Assets, Net	150
Amortization of Intangible Assets	14	1	1
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	15
Finite-Lived Intangible Assets, Amortization Expense, Year Two	15
Finite Lived Intangible Assets, Amortization Expense, Year Three	15
Finite Lived Intangible Assets, Amortization Expense, Year Four	15
Finite Lived Intangible Assets, Amortization Expense, Year Five	11
Asset useful lives minimum range, years				5 years	20 years
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 36	$ 3	$ 3							$ 36