Segment Information (Additional Product Information For Net Sales) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 28, 2019	Apr. 29, 2018	Apr. 28, 2019	Apr. 29, 2018
Segment Reporting Information [Line Items]
Net sales	$ 2,178	$ 1,878	$ 7,129	$ 5,743
Soup [Member]
Segment Reporting Information [Line Items]
Net sales	560	564	2,108	2,113
Snacks [Member]
Segment Reporting Information [Line Items]
Net sales	1,138	818	3,567	2,180
Other Simple Meals [Member]
Segment Reporting Information [Line Items]
Net sales	286	293	879	903
Beverages [Member]
Segment Reporting Information [Line Items]
Net sales	194	203	574	545
Other [Member]
Segment Reporting Information [Line Items]
Net sales	$ 0	$ 0	$ 1	$ 2