Restructuring Charges and Cost Savings Initiatives (Schedule Of Restructuring Activity And Related Reserves) (Details) - 2015 and Snyder's-Lance Initiatives [Member] - USD ($) $ in Millions		12 Months Ended
		Aug. 02, 2020		Jul. 28, 2019		Jul. 29, 2018
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost		$ 69		$ 121		$ 202
Severance Pay And Benefits [Member]
Restructuring Reserve [Roll Forward]
Accrued Balance at beginning of period		37	[1]	43	[2]
Restructuring and Related Cost, Incurred Cost		9		31
Cash Payments		(31)		(36)
Restructuring Reserve, Translation Adjustment				(1)
Accrued Balance at end of period		15	[3]	37	[1]	43	[2]
Restructuring Reserve, Noncurrent		3		8		$ 24
Other Cost Savings Implementation Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost	[4]	56		72
Asset Impairment Accelerated Depreciation [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost		$ 4		$ 18

[1] Includes $8 of severance pay and benefits recorded in Other liabilities in the Consolidated Balance Sheet.

[2] Includes $24 of severance pay and benefits recorded in Other liabilities in the Consolidated Balance Sheet.

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

[4] 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, Cost of products sold, Marketing and selling expenses, and Research and development expenses in the Consolidated Statements of Earnings.