Segment Information (Additional Product Information For Net Sales) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 31, 2021	Nov. 01, 2020
Segment Reporting Information [Line Items]
Net sales	$ 2,236	$ 2,340
Soup [Member]
Segment Reporting Information [Line Items]
Net sales	797	826
Snacks [Member]
Segment Reporting Information [Line Items]
Net sales	1,003	1,008
Other Simple Meals [Member]
Segment Reporting Information [Line Items]
Net sales	264	311
Beverages [Member]
Segment Reporting Information [Line Items]
Net sales	$ 172	$ 195