Segment Information (Schedule Of Segment Reporting - Earnings Before Interest And Taxes) (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Apr. 26, 2020	Jul. 31, 2022		Aug. 01, 2021		Aug. 02, 2020
Segment Reporting Information [Line Items]
Earnings before interest and taxes			$ 1,163		$ 1,545		$ 1,107
Investment losses		$ (45)	0	[1]	0	[1]	(49)	[1]
Loss on sales of businesses			0		(11)		975
Meals & Beverages [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes			874		922		1,009
Snacks [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes			517		514		525
Corporate
Segment Reporting Information [Line Items]
Earnings before interest and taxes	[2]		(223)		130		(418)
Defined Benefit Plan, Actuarial Gain (Loss)			(44)		203		(164)
Investment losses							(45)
Loss on sales of businesses					(11)		(64)
Restructuring and Related Cost, Incurred Cost			(26)		(32)		(60)
Unrealized Gain (Loss) on Commodity Contracts			(59)		50		2
Corporate | Restructuring Charges [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	[3]		$ (5)		$ (21)		$ (9)

[1] 2020 includes a loss of $45 million related to Acre. See Note 14 for additional information.

[2] Represents unallocated items. Pension and postretirement actuarial gains and losses are included in Corporate. There were actuarial losses of $44 million in 2022, gains of $203 million in 2021, and losses of $164 million in 2020, respectively. Costs related to the cost savings initiatives were $26 million, $32 million and $60 million in 2022, 2021 and 2020, respectively. Unrealized mark-to-market adjustments on outstanding undesignated commodity hedges were losses of $59 million in 2022, gains of $50 million in 2021, and gains of $2 million in 2020, respectively. A loss of $11 million on the sale of the Plum baby food and snacks business was included in 2021. A loss of $64 million on the sale of our European chips business was included in 2020. A loss of $45 million on Acre Venture Partners, L.P. (Acre) was included in 2020. See Note 14 for additional information on Acre.

[3] See Note 7 for additional information.