Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Oct. 27, 2019	Oct. 28, 2018
Income Statement [Abstract]
Net sales		$ 2,183	$ 2,202
Costs and expenses
Cost of products sold		1,445	1,476
Marketing and selling expenses		206	211
Administrative expenses		134	148
Research and development expenses		22	23
Other expenses / (income)		56	0
Restructuring charges		3	18
Total costs and expenses		1,866	1,876
Earnings before interest and taxes		317	326
Interest expense		80	91
Interest income		0	1
Earnings before taxes		237	236
Taxes on earnings		68	56
Earnings from continuing operations		169	180
Earnings (loss) from discontinued operations		(3)	14
Net earnings		166	194
Less: Net earnings (loss) attributable to noncontrolling interests		0	0
Net earnings attributable to Campbell Soup Company		$ 166	$ 194
Per Share - Basic
Earnings from continuing operations attributable to Campbell Soup Company		$ 0.56	$ 0.60
Earnings (loss) from discontinued operations		(0.01)	0.05
Net earnings attributable to Campbell Soup Company	[1]	$ 0.55	$ 0.64
Weighted average shares outstanding - basic		301	301
Per Share - Assuming Dilution
Earnings from continuing operations attributable to Campbell Soup Company		$ 0.56	$ 0.60
Earnings (loss) from discontinued operations		(0.01)	0.05
Net earnings attributable to Campbell Soup Company	[1]	$ 0.55	$ 0.64
Weighted average shares outstanding - assuming dilution		303	302

[1] Sum of the individual amounts may not add due to rounding.