Restructuring Charges and Cost Savings Initiatives (Schedule Of Restructuring Activity And Related Reserves) (Details) - USD ($) $ in Millions		3 Months Ended			9 Months Ended			12 Months Ended
		Apr. 29, 2018		Apr. 30, 2017	Apr. 29, 2018		Apr. 30, 2017	Jul. 30, 2017		Jul. 31, 2016	Aug. 02, 2015
2015 Initiatives [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost		$ 60		$ 7	$ 139		$ 18	$ 58		$ 82	$ 124
2015 Initiatives [Member] | Severance Pay And Benefits [Member]
Restructuring Reserve [Roll Forward]
Accrued Balance at beginning of period	[1]				26
Restructuring and Related Cost, Incurred Cost					43
Cash Payments					(23)
Restructuring Reserve, Foreign Currency Translation Gain (Loss)					(1)
Accrued Balance at end of period		45	[2]		45	[2]		26	[1]
Restructuring Reserve, Noncurrent		29			29			$ 2
2015 Initiatives [Member] | Other Non-cash Benefit Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost	[3]				2
2015 Initiatives [Member] | Other Cost Savings Implementation Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost	[4]				72
2015 Initiatives [Member] | Asset Impairment Accelerated Depreciation [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost					19
2015 Initiatives [Member] | Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost	[5]				3
Snyder's-Lance Initiatives [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost					16
Snyder's-Lance Initiatives [Member] | Severance Pay And Benefits [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost					10
Cash Payments					0
Accrued Balance at end of period		$ 10			10
Snyder's-Lance Initiatives [Member] | Other Cost Savings Implementation Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Incurred Cost	[6]				$ 6

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

[2] Includes $29 of severance pay and benefits recorded in Other liabilities in the Consolidated Balance Sheet.

[3] Represents pension termination benefits. See Note 10 for additional information.

[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, and Marketing and selling expenses in the Consolidated Statements of Earnings.

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

[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 in the Consolidated Statements of Earnings.