Supplemental Financial Statement Data (Schedule of Statement of Earnings) (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Aug. 02, 2015	Jul. 30, 2017	Jul. 31, 2016	Aug. 02, 2015
Amortization of Intangible Assets			$ 19	$ 20	$ 17
Impairment charges	[1]		212	141	6
Claim Settlement	[2]		0	(25)	0
Other			7	(5)	1
Other Operating Income (Expense), Net			(238)	(131)	(24)
Advertising Expense	[3]		389	397	385
Interest Costs Incurred			114	118	111
Interest Costs Capitalized Adjustment			(2)	(3)	(3)
Interest Expense			112	115	108
Bolthouse Farms carrot and carrot ingredients and Garden Fresh Gourmet reporting unit [Member]
Impairment charges			$ 212
Bolthouse Farms carrot and carrot ingredients reporting unit [Member]
Impairment charges				$ 141
Global Biscuits and Snacks [Member]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		$ 6			$ 6

[1] In 2017, we recognized impairment charges of $212 related to the intangible assets of the Bolthouse Farms carrot and carrot ingredients reporting unit and the Garden Fresh Gourmet reporting unit; in 2016, we recognized an impairment charge of $141 related to the intangible assets of the Bolthouse Farms carrot and carrot ingredients reporting unit; and in 2015, we recognized an impairment charge of $6 related to minor trademarks used in the Global Biscuits and Snacks segment. See also Note 5.

[2] In 2016, we recorded a gain of $25 from a settlement of a claim related to the Kelsen acquisition.

[3] Included in Marketing and selling expenses.