Goodwill And Intangible Assets (Narrative) (Details) - USD ($) $ in Millions				3 Months Ended			12 Months Ended
	Oct. 30, 2018	Mar. 26, 2018	Dec. 12, 2017	Jul. 28, 2019	Oct. 28, 2018	Jul. 29, 2018	Jul. 28, 2019	Jul. 29, 2018	Jul. 30, 2017
Finite-Lived Intangible Assets [Line Items]
Goodwill, Purchase Accounting Adjustments							$ 140
Goodwill				$ 4,017		$ 3,864	4,017	$ 3,864	$ 811
Goodwill, Acquired During Period							21	3,068
Indefinite-lived Intangible Assets (Excluding Goodwill)				2,629		2,764	2,629	2,764
Amortization of Intangible Assets							48	20	1
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months				45			45
Finite-Lived Intangible Assets, Amortization Expense, Year Two				44			44
Finite Lived Intangible Assets, Amortization Expense, Year Three				44			44
Finite Lived Intangible Assets, Amortization Expense, Year Four				44			44
Finite Lived Intangible Assets, Amortization Expense, Year Five				44			44
Discontinued Operations, Held-for-sale or Disposed of by Sale [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets							9	14	18
Yellow Chips [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill, Acquired During Period	$ 21
Snyder's-Lance [Member]
Finite-Lived Intangible Assets [Line Items]
Payments to Acquire Businesses, Gross		$ 6,112
Goodwill		$ 3,006
Indefinite-lived Intangible Assets (Excluding Goodwill)				1,996			1,996
Pacific Foods [Member]
Finite-Lived Intangible Assets [Line Items]
Payments to Acquire Businesses, Gross			$ 688
Goodwill			$ 202
Trade Name - Pacific Foods [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)				280			280
Trade Names - Pace [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)				292			292
Trade Names - Plum [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)						54
Indefinite-lived Intangible Assets (Excluding Goodwill), Fair Value Disclosure						61		61
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment of Intangible Assets, Finite-lived				16
Snacks [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill, Purchase Accounting Adjustments					$ 140
Goodwill				$ 3,040		$ 2,886	$ 3,040	2,886	$ 31
Goodwill, Acquired During Period								$ 2,866