Restructuring Charges and Cost Savings Initiatives (Schedule Of Restructuring Charges Associated With Each Reportable Segment) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 27, 2019	Oct. 28, 2018
Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 8	$ 27
2015 and Snyder's-Lance Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	583
Restructuring and Related Cost, Incurred Cost	11	$ 45
2015 and Snyder's-Lance Initiatives [Member] | Meals & Beverages [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	213
Restructuring and Related Cost, Incurred Cost	2
2015 and Snyder's-Lance Initiatives [Member] | Snacks [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	210
Restructuring and Related Cost, Incurred Cost	9
2015 and Snyder's-Lance Initiatives [Member] | Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	160
Restructuring and Related Cost, Incurred Cost	$ 0