Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Jul. 29, 2018	Jul. 30, 2017	Jul. 31, 2016
Income Statement [Abstract]
Net sales	$ 8,685	$ 7,890	$ 7,961
Costs and expenses
Cost of products sold	5,869	4,965	5,033
Marketing and selling expenses	902	855	852
Administrative expenses	654	550	575
Research and development expenses	110	111	105
Other expenses / (income)	619	(9)	405
Restructuring charges	62	18	31
Total costs and expenses	8,216	6,490	7,001
Earnings before interest and taxes	469	1,400	960
Interest expense	201	112	115
Interest income	4	5	4
Earnings before taxes	272	1,293	849
Taxes on earnings	11	406	286
Net earnings	261	887	563
Less: Net earnings (loss) attributable to noncontrolling interests	0	0	0
Net earnings attributable to Campbell Soup Company	$ 261	$ 887	$ 563
Per Share - Basic
Net earnings attributable to Campbell Soup Company	$ 0.87	$ 2.91	$ 1.82
Weighted average shares outstanding - basic	301	305	309
Per Share - Assuming Dilution
Net earnings attributable to Campbell Soup Company	$ 0.86	$ 2.89	$ 1.81
Weighted average shares outstanding - assuming dilution	302	307	311