Restructuring Charges and Cost Savings Initiatives (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 28, 2024	Jul. 30, 2023	Jul. 31, 2022
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 38	$ 16	$ 5
Corporate
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	92	50	26
2015 and Snyder's-Lance Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Payments To Acquire Property, Plant, and Equipment - Incurred to Date	543
Other Restructuring Costs	104	66	31
Restructuring Charges	17	16	$ 5
Restructuring and Related Cost, Cost Incurred to Date	895
2015 and Snyder's-Lance Initiatives [Member] | Meals & Beverages [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	37
Restructuring and Related Cost, Cost Incurred to Date	288
2015 and Snyder's-Lance Initiatives [Member] | Snacks [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	38
Restructuring and Related Cost, Cost Incurred to Date	383
2015 and Snyder's-Lance Initiatives [Member] | Corporate
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	29
Restructuring and Related Cost, Cost Incurred to Date	224
Other Optimization Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	115
Sovos Initiatives
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	21
2025 Initiatives
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	180
Payments To Acquire Property, Plant, and Equipment- Expected Payments	$ 235
2025 Initiatives | Meals & Beverages [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Allocation	80.00%
2025 Initiatives | Snacks [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Allocation	5.00%
2025 Initiatives | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Allocation	15.00%
Severance Pay And Benefits [Member] | 2015 and Snyder's-Lance Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	$ 253
Severance Pay And Benefits [Member] | 2025 Initiatives
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	25
Asset Impairment Accelerated Depreciation [Member] | 2015 and Snyder's-Lance Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	28	$ 24
Restructuring and Related Cost, Cost Incurred to Date	134
Asset Impairment Accelerated Depreciation [Member] | 2025 Initiatives
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	45
Implementation Costs and Other Related Costs [Member] | 2015 and Snyder's-Lance Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	508
Implementation Costs and Other Related Costs [Member] | 2025 Initiatives
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	110
Cash Expenditures | 2015 and Snyder's-Lance Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	720
Cash Expenditures | 2025 Initiatives
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	135
Marketing and Selling Expenses | Other Optimization Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	$ 5