Business And Geographic Segment Information (Schedule Of Segment Reporting - Net Sales) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	May. 01, 2016	May. 03, 2015	May. 01, 2016	May. 03, 2015
Segment Reporting Information [Line Items]
Net sales	$ 1,870	$ 1,900	$ 6,274	$ 6,389
Americas Simple Meals and Beverages [Member]
Segment Reporting Information [Line Items]
Net sales	999	1,030	3,538	3,641
Global Biscuits and Snacks [Member]
Segment Reporting Information [Line Items]
Net sales	608	623	1,942	2,014
Campbell Fresh [Member]
Segment Reporting Information [Line Items]
Net sales	$ 263	$ 247	$ 794	$ 734