Restructuring Charges and Cost Savings Initiatives (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended		24 Months Ended
	Jan. 31, 2021	Jan. 31, 2021	Jan. 26, 2020	Jul. 31, 2022
Restructuring Cost and Reserve [Line Items]
Purchases of plant assets		$ 132	$ 167
2015 and Snyder's-Lance Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Purchases of plant assets		$ 367
2015 and Snyder's-Lance Initiatives [Member] | Meals & Beverages [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Allocation	32.00%	32.00%
2015 and Snyder's-Lance Initiatives [Member] | Snacks [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Allocation	44.00%	44.00%
2015 and Snyder's-Lance Initiatives [Member] | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Allocation	24.00%	24.00%
2015 and Snyder's-Lance Initiatives [Member] | Forecast [Member]
Restructuring Cost and Reserve [Line Items]
Purchases of plant assets				$ 455
2015 and Snyder's-Lance Initiatives [Member] | Asset Impairment Accelerated Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	$ 85	$ 85
2015 and Snyder's-Lance Initiatives [Member] | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	695	695
Effect on Future Cash Flows, Amount		595
2015 and Snyder's-Lance Initiatives [Member] | Minimum [Member] | Severance Pay And Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	220	220
2015 and Snyder's-Lance Initiatives [Member] | Minimum [Member] | Implementation Costs and Other Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	390	390
2015 and Snyder's-Lance Initiatives [Member] | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	725	725
Effect on Future Cash Flows, Amount		625
2015 and Snyder's-Lance Initiatives [Member] | Maximum [Member] | Severance Pay And Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	225	225
2015 and Snyder's-Lance Initiatives [Member] | Maximum [Member] | Implementation Costs and Other Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	415	$ 415
Snyder's- Lance Cost Transformation Program and Integration
Restructuring Cost and Reserve [Line Items]
Deferred Income Tax Expense (Benefit)	$ 19