Business And Geographic Segment Inormation (Schedule of Segment Reporting - Depreciation and Amortization)(Details) - USD ($) $ in Millions		12 Months Ended
		Jul. 30, 2017	Jul. 31, 2016	Aug. 02, 2015
Segment Reporting Information [Line Items]
Depreciation and amortization		$ 318	$ 308	$ 303
Americas Simple Meals and Beverages [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization		118	117	123
Global Biscuits and Snacks [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization		98	96	94
Campbell Fresh [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization		83	77	70
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	[1]	$ 19	$ 18	$ 16

[1] Represents primarily corporate offices.