Restructuring Charges and Cost Savings Initiatives (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Jan. 31, 2021	Jul. 31, 2022	Aug. 01, 2021	Aug. 02, 2020	Jul. 28, 2019
Restructuring Cost and Reserve [Line Items]
Payments to Acquire Property, Plant, and Equipment				$ 275	$ 299	$ 384
Deferred Income Tax Expense (Benefit)				137	(7)	23
Meals & Beverages [Member]
Restructuring Cost and Reserve [Line Items]
Payments to Acquire Property, Plant, and Equipment				61	52	156
Snacks [Member]
Restructuring Cost and Reserve [Line Items]
Payments to Acquire Property, Plant, and Equipment				153	153	134
Corporate and Other
Restructuring Cost and Reserve [Line Items]
Payments to Acquire Property, Plant, and Equipment	[1]			61	$ 64	$ 35
2015 and Snyder's-Lance Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Payments Made To Date To Acquire Property Plant And Equipment				$ 401
2015 and Snyder's-Lance Initiatives [Member] | Forecast [Member]
Restructuring Cost and Reserve [Line Items]
Payments to Acquire Property, Plant, and Equipment			$ 435
2015 and Snyder's-Lance Initiatives [Member] | Meals & Beverages [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Allocation				31.00%
2015 and Snyder's-Lance Initiatives [Member] | Snacks [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Allocation				45.00%
2015 and Snyder's-Lance Initiatives [Member] | Corporate and Other
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Allocation				24.00%
Snyder's-Lance Cost Transformation Program and Integration
Restructuring Cost and Reserve [Line Items]
Deferred Income Tax Expense (Benefit)		$ 19		$ 19
Asset Impairment Accelerated Depreciation [Member] | 2015 and Snyder's-Lance Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost				85
Minimum [Member] | 2015 and Snyder's-Lance Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost				710
Effect on Future Cash Flows, Amount				610
Minimum [Member] | Severance Pay And Benefits [Member] | 2015 and Snyder's-Lance Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost				220
Minimum [Member] | Implementation Costs and Other Related Costs [Member] | 2015 and Snyder's-Lance Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost				405
Maximum [Member] | 2015 and Snyder's-Lance Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost				730
Effect on Future Cash Flows, Amount				630
Maximum [Member] | Severance Pay And Benefits [Member] | 2015 and Snyder's-Lance Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost				225
Maximum [Member] | Implementation Costs and Other Related Costs [Member] | 2015 and Snyder's-Lance Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost				$ 420

[1] Represents primarily corporate offices and enterprise-wide information technology systems.