Restructuring Charges and Cost Savings Initiatives (Schedule Of Pre-Tax Charges) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		114 Months Ended
	Apr. 27, 2025	Apr. 28, 2024	Apr. 27, 2025	Apr. 28, 2024	Jul. 28, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 6	$ 13	$ 17	$ 17
2015 and Snyder's-Lance Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		(3)		1	$ 297
Restructuring and Related Cost, Cost Incurred to Date					895
Other Restructuring Costs		15		64	895
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] | General and Administrative Expense [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs		13		47	437
2015 and Snyder's-Lance Initiatives [Member] | Cost Of Products Sold [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs		3		9	128
2015 and Snyder's-Lance Initiatives [Member] | Selling and Marketing Expense [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs		1		4	23
2015 and Snyder's-Lance Initiatives [Member] | Research and Development Expense [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs		$ 1		$ 3	$ 10
2025 Initiatives
Restructuring Cost and Reserve [Line Items]
Restructuring charges	6		17
Restructuring and Related Cost, Cost Incurred to Date	73		73
Other Restructuring Costs	21		73
2025 Initiatives | Severance Pay And Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	17		17
2025 Initiatives | Asset Impairment Accelerated Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	23		23
Other Restructuring Costs			23
2025 Initiatives | Implementation Costs and Other Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	33		33
2025 Initiatives | General and Administrative Expense [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	7		26
2025 Initiatives | Cost Of Products Sold [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	7		25
2025 Initiatives | Selling and Marketing Expense [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	0		2
2025 Initiatives | Research and Development Expense [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	$ 1		$ 3