Restructuring Charges and Cost Savings Initiatives (Schedule Of Restructuring Activity And Related Reserves) (Details) - 2015 and Snyder's-Lance Initiatives [Member] - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jan. 31, 2021	Jan. 26, 2020	Jan. 31, 2021	Jan. 26, 2020	Aug. 02, 2020
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost		$ 22	$ 25	$ 28	$ 36
Severance Pay And Benefits [Member]
Restructuring Reserve [Roll Forward]
Accrued Balance at beginning of period	[1]			15
Restructuring and Related Cost, Incurred Cost				4
Cash Payments				(9)
Accrued Balance at end of period	[2]	10		10
Restructuring Reserve, Noncurrent		$ 4		4		$ 3
Other Cost Savings Implementation Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost	[3]			8
Asset Impairment Accelerated Depreciation [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost				13
Other Non Cash Exit Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost	[4]			$ 3

[1] Includes $3 of severance pay and benefits recorded in Other liabilities in the Consolidated Balance Sheet.

[2] Includes $4 of severance pay and benefits recorded in Other liabilities in the Consolidated Balance Sheet.

[3] Includes other costs recognized as incurred that are not reflected in the restructuring reserve in the Consolidated Balance Sheet. The costs are included in Administrative expenses and Cost of products sold in the Consolidated Statements of Earnings.

[4] Includes non-cash costs that are not reflected in the restructuring reserve in the Consolidated Balance Sheet.