Goodwill And Intangible Assets (Goodwill) (Details) - USD ($) $ in Millions		12 Months Ended
		Jul. 31, 2022	Aug. 01, 2021
Goodwill [Line Items]
Beginning Balance		$ 3,981	$ 3,986
Goodwill, Written off Related to Sale of Business Unit	[1]		(12)
Foreign currency translation adjustment		(2)	7
Ending Balance		3,979	3,981
Meals & Beverages [Member]
Goodwill [Line Items]
Beginning Balance		970	975
Goodwill, Written off Related to Sale of Business Unit	[1]		(12)
Goodwill, Other Increase (Decrease)	[2]	25
Foreign currency translation adjustment		(2)	7
Ending Balance		993	970
Snacks [Member]
Goodwill [Line Items]
Beginning Balance		3,011	3,011
Goodwill, Written off Related to Sale of Business Unit	[1]		0
Goodwill, Other Increase (Decrease)	[2]	(25)
Foreign currency translation adjustment		0	0
Ending Balance		$ 2,986	$ 3,011

[1] See Note 3 for additional information on the sale of the Plum baby and snack foods business

[2] See Note 6 for additional information.