Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jan. 30, 2022	Jan. 31, 2021	Jan. 30, 2022	Jan. 31, 2021
Income Statement [Abstract]
Net sales	$ 2,209	$ 2,279	$ 4,445	$ 4,619
Costs and expenses
Cost of products sold	1,540	1,496	3,054	3,023
Marketing and selling expenses	197	232	367	440
Administrative expenses	147	158	303	299
Research and development expenses	21	19	42	39
Other expenses / (income)	(19)	(45)	(20)	(63)
Restructuring charges	0	18	0	19
Total costs and expenses	1,886	1,878	3,746	3,757
Earnings before interest and taxes	323	401	699	862
Interest expense	46	55	93	110
Interest income	0	1	0	1
Earnings before taxes	277	347	606	753
Taxes on earnings	65	102	133	199
Earnings from continuing operations	212	245	473	554
Earnings (loss) from discontinued operations	0	0	0	0
Net earnings	212	245	473	554
Less: Net earnings (loss) attributable to noncontrolling interests	0	0	0	0
Net earnings attributable to Campbell Soup Company	$ 212	$ 245	$ 473	$ 554
Per Share - Basic
Earnings from continuing operations attributable to Campbell Soup Company	$ 0.70	$ 0.81	$ 1.57	$ 1.83
Earnings (loss) from discontinued operations	0	0	0	0
Net earnings attributable to Campbell Soup Company	$ 0.70	$ 0.81	$ 1.57	$ 1.83
Weighted average shares outstanding - basic	302	303	302	303
Per Share - Assuming Dilution
Earnings from continuing operations attributable to Campbell Soup Company	$ 0.70	$ 0.80	$ 1.56	$ 1.82
Earnings (loss) from discontinued operations	0	0	0	0
Net earnings attributable to Campbell Soup Company	$ 0.70	$ 0.80	$ 1.56	$ 1.82
Weighted average shares outstanding - assuming dilution	303	305	303	305