Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Oct. 31, 2021	Nov. 01, 2020
Income Statement [Abstract]
Net sales	$ 2,236	$ 2,340
Costs and expenses
Cost of products sold	1,514	1,527
Marketing and selling expenses	170	208
Administrative expenses	156	141
Research and development expenses	21	20
Other expenses / (income)	(1)	(18)
Restructuring charges	0	1
Total costs and expenses	1,860	1,879
Earnings before interest and taxes	376	461
Interest expense	47	55
Interest income	0	0
Earnings before taxes	329	406
Taxes on earnings	68	97
Earnings from continuing operations	261	309
Earnings (loss) from discontinued operations	0	0
Net earnings	261	309
Less: Net earnings (loss) attributable to noncontrolling interests	0	0
Net earnings attributable to Campbell Soup Company	$ 261	$ 309
Per Share - Basic
Earnings from continuing operations attributable to Campbell Soup Company	$ 0.86	$ 1.02
Earnings (loss) from discontinued operations	0	0
Net earnings attributable to Campbell Soup Company	$ 0.86	$ 1.02
Weighted average shares outstanding - basic	302	302
Per Share - Assuming Dilution
Earnings from continuing operations attributable to Campbell Soup Company	$ 0.86	$ 1.02
Earnings (loss) from discontinued operations	0	0
Net earnings attributable to Campbell Soup Company	$ 0.86	$ 1.02
Weighted average shares outstanding - assuming dilution	303	304