Segment Information (Additional Product Information For Net Sales) (Details) - USD ($) $ in Millions	3 Months Ended
	Nov. 01, 2020	Oct. 27, 2019
Segment Reporting Information [Line Items]
Net sales	$ 2,340	$ 2,183
Soup [Member]
Segment Reporting Information [Line Items]
Net sales	826	708
Snacks [Member]
Segment Reporting Information [Line Items]
Net sales	1,008	1,010
Other Simple Meals [Member]
Segment Reporting Information [Line Items]
Net sales	311	283
Beverages [Member]
Segment Reporting Information [Line Items]
Net sales	$ 195	$ 182