Restructuring Charges and Cost Savings Initiatives (Schedule Of Restructuring Charges Associated With Each Reportable Segment) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 31, 2021	Jan. 26, 2020	Jan. 31, 2021	Jan. 26, 2020
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 4	$ 18	$ 9	$ 26
2015 and Snyder's-Lance Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	669		669
Restructuring and Related Cost, Incurred Cost	22	$ 25	28	$ 36
2015 and Snyder's-Lance Initiatives [Member] | Meals & Beverages [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	221		221
Restructuring and Related Cost, Incurred Cost	1		1
2015 and Snyder's-Lance Initiatives [Member] | Snacks [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	277		277
Restructuring and Related Cost, Incurred Cost	21		26
2015 and Snyder's-Lance Initiatives [Member] | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	171		171
Restructuring and Related Cost, Incurred Cost	$ 0		$ 1