Goodwill And Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 26, 2020	Jan. 27, 2019	Jan. 26, 2020	Jan. 27, 2019	Jul. 28, 2019
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)	$ 2,611		$ 2,611		$ 2,629
Amortization of Intangible Assets	11	$ 12	22	$ 23
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				$ 7
Snyder's-Lance [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)	1,978		1,978
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