Business And Geographic Segment Inormation (Schedule of Segment Reporting - Depreciation and Amortization)(Details) - USD ($) $ in Millions		12 Months Ended
		Jul. 29, 2018	Jul. 30, 2017	Jul. 31, 2016
Segment Reporting Information [Line Items]
Depreciation and amortization		$ 394	$ 318	$ 308
Americas Simple Meals and Beverages [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization		158	118	117
Global Biscuits and Snacks [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization		144	98	96
Campbell Fresh [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization		73	83	77
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	[1]	$ 19	$ 19	$ 18

[1] Represents primarily corporate offices.