Segment Information (Schedule Of Segment Reporting - Net Sales) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 27, 2019	Jan. 28, 2018	Jan. 27, 2019	Jan. 28, 2018
Segment Reporting Information [Line Items]
Net sales	$ 2,713	$ 2,180	$ 5,407	$ 4,341
Meals and Beverages [Member]
Segment Reporting Information [Line Items]
Net sales	1,230	1,214	2,474	2,453
Global Biscuits and Snacks [Member]
Segment Reporting Information [Line Items]
Net sales	1,243	708	2,461	1,396
Campbell Fresh [Member]
Segment Reporting Information [Line Items]
Net sales	239	257	471	491
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Net sales	$ 1	$ 1	$ 1	$ 1