Business And Geographic Segment Information (Schedule Of Segment Reporting - Earnings Before Interest And Taxes) (Details) - USD ($) $ in Millions		12 Months Ended
		Jul. 30, 2017	Jul. 31, 2016	Aug. 02, 2015
Segment Reporting Information [Line Items]
Earnings before interest and taxes		$ 1,400	$ 960	$ 1,054
Goodwill and Intangible Asset Impairment	[1]	(212)	(141)	(6)
Other Income	[2]	0	25	0
Americas Simple Meals and Beverages [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes		1,120	1,069	948
Global Biscuits and Snacks [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes		454	422	383
Campbell Fresh [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes		(9)	60	61
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	[3]	(147)	(560)	(236)
Defined Benefit Plan, Actuarial Gain (Loss)		178	(313)	(138)
Restructuring and Related Cost, Incurred Cost		(40)	(47)	(22)
Goodwill and Intangible Asset Impairment		(212)	(141)
Restructuring Charges [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	[4]	$ (18)	$ (31)	$ (102)

[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] Represents unallocated items. Pension and postretirement benefit mark-to-market adjustments are included in Corporate. There were gains of $178 in 2017, and losses of $313 and $138 in 2016 and 2015, respectively. Costs related to the implementation of our new organizational structure and cost savings initiatives were $40, $47 and $22 in 2017, 2016 and 2015, respectively. Impairment charges of $212 on the intangible assets of the Bolthouse Farms carrot and carrot ingredients reporting unit and the Garden Fresh Gourmet reporting unit were included in 2017 and an impairment charge of $141 on the intangible assets of the Bolthouse Farms carrot and carrot ingredients reporting unit was included in 2016. See Note 5 for information on the impairment charges. A gain of $25 from a settlement of a claim related to the Kelsen acquisition was also included in 2016.

[4] See Note 7 for additional information.