Business And Geographic Segment Information (Schedule Of Segment Reporting - Earnings Before Interest And Taxes) (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Apr. 26, 2020	Aug. 02, 2020		Jul. 28, 2019		Jul. 29, 2018
Segment Reporting Information [Line Items]
Earnings before interest and taxes			$ 1,107		$ 979		$ 1,010
Gain (Loss) on Investments		$ (45)	(49)	[1]	(1)	[1]	(10)	[1]
Gain (Loss) on Disposition of Business			975		(32)		0
Goodwill and Intangible Asset Impairment	[2]		0		(16)		(54)
Legal Fees							(22)
Meals & Beverages [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes			983		895		979
Snacks [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes			551		522		392
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	[3]		(418)		(407)		(306)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			(43)		(28)
Defined Benefit Plan, Actuarial Gain (Loss)			(121)		(122)		131
Gain (Loss) on Investments			(45)
Gain (Loss) on Disposition of Business			(64)
Cost savings initiatives			(60)		(90)		(135)
Business Combination Transaction and Integration Related Costs							(107)
Goodwill and Intangible Asset Impairment					(16)		(54)
Legal Fees							(22)
Restructuring Charges [Member]
Segment Reporting Information [Line Items]
Earnings before interest and taxes	[4]		$ (9)		$ (31)		$ (55)

[1] 2020 includes a loss of $45 related to Acre. See Note 16 for additional information.

[2] See Note 6 for additional information.

[3] Represents unallocated items. Pension and postretirement benefit settlement and mark-to-market adjustments are included in Corporate. There were settlement charges of $43 and losses of $121 in 2020, settlement charges of $28 and losses of $122 in 2019, and gains of $131 in 2018, respectively. A loss of $45 on Acre Venture Partners, L.P. (Acre) was included in 2020. See Note 16 for additional information on Acre. A loss of $64 on the sale of our European chips business was included in 2020. Costs related to the cost savings initiatives were $60, $90 and $135 in 2020, 2019 and 2018, respectively. Transaction and integration costs associated with the acquisition of Snyder's-Lance were $107 in 2018. Intangible asset impairment charges were $16 in 2019 and $54 in 2018. A charge of $22 related to the settlement of a legal claim was included in 2018.

[4] See Note 8 for additional information.