Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Jul. 28, 2019		Jul. 29, 2018	Jul. 30, 2017
Income Statement [Abstract]
Net sales		$ 8,107		$ 6,615	$ 5,837
Costs and expenses
Cost of products sold		5,414		4,241	3,395
Marketing and selling expenses		842		728	675
Administrative expenses		610		563	448
Research and development expenses		91		91	93
Other expenses / (income)		140		(73)	(216)
Restructuring charges		31		55	11
Total costs and expenses		7,128		5,605	4,406
Earnings before interest and taxes		979		1,010	1,431
Interest expense		356		183	115
Interest income		2		3	0
Earnings before taxes		625		830	1,316
Taxes on earnings		151		106	392
Earnings from continuing operations		474		724	924
Loss from discontinued operations		(263)		(463)	(37)
Net earnings		211		261	887
Less: Net earnings (loss) attributable to noncontrolling interests		0		0	0
Net earnings attributable to Campbell Soup Company		$ 211		$ 261	$ 887
Per Share - Basic
Earnings from continuing operations attributable to Campbell Soup Company		$ 1.57	[1]	$ 2.41	$ 3.03
Loss from discontinued operations		(0.87)		(1.54)	(0.12)
Net earnings attributable to Campbell Soup Company		$ 0.70		$ 0.87	$ 2.91
Weighted average shares outstanding - basic		301		301	305
Per Share - Assuming Dilution
Earnings from continuing operations attributable to Campbell Soup Company		$ 1.57		$ 2.40	$ 3.01
Loss from discontinued operations		(0.87)		(1.53)	(0.12)
Net earnings attributable to Campbell Soup Company	[2]	$ 0.70		$ 0.86	$ 2.89
Weighted average shares outstanding - assuming dilution		302		302	307

[1] The sum of individual per share amounts may not add due to rounding.

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