Restructuring Charges and Cost Savings Initiatives (Schedule Of Pre-Tax Charges) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 26, 2025	Jan. 28, 2024	Jan. 26, 2025	Jan. 28, 2024	Jul. 28, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 5	$ 2	$ 11	$ 4
2015 and Snyder's-Lance Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		2		4
Restructuring and Related Cost, Cost Incurred to Date					$ 895
Other Restructuring Costs		36		49
2015 and Snyder's-Lance Initiatives [Member] | Severance Pay And Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date					253
2015 and Snyder's-Lance Initiatives [Member] | Asset Impairment Accelerated Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date					134
2015 and Snyder's-Lance Initiatives [Member] | Implementation Costs and Other Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date					508
2015 and Snyder's-Lance Initiatives [Member] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date					297
2015 and Snyder's-Lance Initiatives [Member] | General and Administrative Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date					437
Other Restructuring Costs		29		34
2015 and Snyder's-Lance Initiatives [Member] | Cost Of Products Sold [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date					128
Other Restructuring Costs		3		6
2015 and Snyder's-Lance Initiatives [Member] | Selling and Marketing Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date					23
Other Restructuring Costs		1		3
2015 and Snyder's-Lance Initiatives [Member] | Research and Development Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date					$ 10
Other Restructuring Costs		$ 1		$ 2
2025 Initiatives
Restructuring Cost and Reserve [Line Items]
Restructuring charges	5		11
Restructuring and Related Cost, Cost Incurred to Date	52		52
Other Restructuring Costs	25		52
2025 Initiatives | Severance Pay And Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	11		11
2025 Initiatives | Asset Impairment Accelerated Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	17		17
Other Restructuring Costs			17
2025 Initiatives | Implementation Costs and Other Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	24		24
2025 Initiatives | General and Administrative Expense [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	8		19
2025 Initiatives | Cost Of Products Sold [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	10		18
2025 Initiatives | Selling and Marketing Expense [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	1		2
2025 Initiatives | Research and Development Expense [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	$ 1		$ 2