Restructuring Charges and Cost Savings Initiatives (Schedule Of Restructuring Activity And Related Reserves) (Details) - USD ($) $ in Millions		12 Months Ended
		Jul. 28, 2019		Jul. 29, 2018		Jul. 30, 2017
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Noncurrent		$ 8		$ 24
2015 and Snyder's-Lance Initiatives [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost		121		202	[1]	$ 48
2015 and Snyder's-Lance Initiatives [Member] | Severance Pay And Benefits [Member]
Restructuring Reserve [Roll Forward]
Accrued Balance at beginning of period		43	[2]	19	[3]
Restructuring and Related Cost, Incurred Cost		31		49
Cash Payments		(36)		(24)
Restructuring Reserve, Translation Adjustment		(1)		(1)
Accrued Balance at end of period		37	[4]	43	[2]	19	[3]
Restructuring Reserve, Noncurrent		8		24		$ 2
2015 and Snyder's-Lance Initiatives [Member] | Other Non-cash Benefit Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost	[5]	0		2
2015 and Snyder's-Lance Initiatives [Member] | Other Cost Savings Implementation Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost	[6]	72		115
2015 and Snyder's-Lance Initiatives [Member] | Asset Impairment Accelerated Depreciation [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost		18		33
2015 and Snyder's-Lance Initiatives [Member] | Other Non Cash Exit Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost	[7]	0		3
Snyder's-Lance Cost Transformation Program and Integration [Member] | Severance Pay And Benefits [Member]
Restructuring Reserve [Roll Forward]
Accrued Balance at beginning of period		$ 9
Accrued Balance at end of period				9
Restructuring Reserve, Noncurrent				$ 1

[1] Includes $13 of Restructuring charges and $12 of Administrative expenses associated with the Snyder's-Lance cost transformation program and integration recognized in 2018.

[2] Includes $24 of severance pay and benefits recorded in Other liabilities in the Consolidated Balance Sheet, $1 of which is associated with the Snyder's-Lance cost transformation program and integration. Of total accrued balance, $9 is associated with the Snyder's-Lance cost transformation program and integration.

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

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

[5] Represents pension special termination benefits. See Note 11 for additional information.

[6] 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.

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