Supplemental Financial Statement Data (Schedule of Statement of Earnings) (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Aug. 02, 2015	Jul. 31, 2016	Aug. 02, 2015	Aug. 03, 2014
Foreign exchange (gains) / losses	[1]		$ (2)	$ 0	$ 6
Amortization of Intangible Assets			20	17	18
Impairment charge			141	6	0	[2]
Claim Settlement	[3]			0	0
Other			(3)	1	(2)
Other Operating Income (Expense), Net			(131)	(24)	(22)
Advertising Expense	[4]		397	385	411
Interest Costs Incurred			118	111	124
Interest Costs Capitalized Adjustment			(3)	(3)	(2)
Interest Expense			115	108	122
Foreign Exchange Contract [Member]
Derivative, Gain / (Loss)					(9)
Corporate, Non-Segment [Member] | Foreign Exchange Contract [Member]
Derivative, Gain / (Loss)					$ 9
Corporate, Non-Segment [Member] | Bolthouse Farms carrot and carrot ingredients reporting unit [Member]
Impairment charge	[2]		141
Global Biscuits and Snacks [Member]
Impairment charge	[2]			6
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		$ 6		$ 6
Kelsen [Member] | Corporate, Non-Segment [Member]
Claim Settlement	[3]		$ (25)

[1] 2014 included a loss of $9 on foreign exchange forward contracts used to hedge the proceeds from the sale of the European simple meals business.

[2] 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 6.

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

[4] Included in Marketing and selling expenses.