Restructuring Charges and Cost Savings Initiatives (Narrative) (Details) - USD ($) $ in Millions		12 Months Ended						24 Months Ended
		Aug. 02, 2020		Jul. 28, 2019		Jul. 29, 2018		Jul. 31, 2022
Restructuring Cost and Reserve [Line Items]
Payments to Acquire Property, Plant, and Equipment		$ 299		$ 384		$ 407
Meals & Beverages [Member]
Restructuring Cost and Reserve [Line Items]
Payments to Acquire Property, Plant, and Equipment		52		156		187
Snacks [Member]
Restructuring Cost and Reserve [Line Items]
Payments to Acquire Property, Plant, and Equipment		153		134		91
Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Payments to Acquire Property, Plant, and Equipment	[1]	64		35		41
2015 and Snyder's-Lance Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Payments Made To Date To Acquire Property Plant And Equipment		$ 336
2015 and Snyder's-Lance Initiatives [Member] | Meals & Beverages [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Allocation		33.00%
2015 and Snyder's-Lance Initiatives [Member] | Snacks [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Allocation		42.00%
2015 and Snyder's-Lance Initiatives [Member] | Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Allocation		25.00%
2015 and Snyder's-Lance Initiatives [Member] | Forecast [Member]
Restructuring Cost and Reserve [Line Items]
Payments to Acquire Property, Plant, and Equipment								$ 420
2015 and Snyder's-Lance Initiatives [Member] | Severance Pay And Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve		$ 15	[2]	37	[3]	43	[4]
2015 and Snyder's-Lance Initiatives [Member] | Asset Impairment Accelerated Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost		70
2015 and Snyder's-Lance Initiatives [Member] | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost		665
Effect on Future Cash Flows, Amount		585
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		215
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		380
2015 and Snyder's-Lance Initiatives [Member] | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost		690
Effect on Future Cash Flows, Amount		610
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		220
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		$ 400
Discontinued Operations, Held-for-sale or Disposed of by Sale [Member] | 2015 and Snyder's-Lance Initiatives [Member] | Severance Pay And Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve				$ 1		$ 3

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

[2] Includes $3 of severance pay and benefits recorded in Other liabilities in the Consolidated Balance Sheet.

[3] Includes $8 of severance pay and benefits recorded in Other liabilities in the Consolidated Balance Sheet.

[4] Includes $24 of severance pay and benefits recorded in Other liabilities in the Consolidated Balance Sheet.