Segment Information (Schedule Of Segment Reporting - Earnings Before Interest And Taxes) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jan. 26, 2020	Jan. 27, 2019	Jan. 26, 2020	Jan. 27, 2019
Segment Reporting Information [Line Items]
Earnings before interest and taxes		$ 350	$ 325	$ 667	$ 651
Loss on sale of business	[1]	0	0	(64)	0
Pension Plan [Member]
Segment Reporting Information [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement		11	0	11	0
Meals & Beverages [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes		242	253	524	543
Snacks [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes		136	132	261	257
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	[2]	(21)	(58)	(108)	(129)
Loss on sale of business				(64)
Restructuring and Related Cost, Incurred Cost		(18)	(22)	(26)	(49)
Corporate, Non-Segment [Member] | Pension Plan [Member]
Segment Reporting Information [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement		11		11
Restructuring Charges [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	[3]	$ (7)	$ (2)	$ (10)	$ (20)

[1] See Note 3 for additional information

[2] Represents unallocated items. Pension benefit settlement adjustments are include in Corporate. There were settlement gains of $11 in the three- and six-month periods ended January 26, 2020. Included in the six-month period ended January 26, 2020, was a loss on the sale of our European chips business of $64. Costs related to the cost savings initiatives were $18 and $22 in the three-month periods and $26 and $49 in the six-month periods ended January 26, 2020, and January 27, 2019, respectively.

[3] See Note 7 for additional information.