Document and Entity Information Document - shares	3 Months Ended
	Oct. 30, 2016	Dec. 01, 2016
Entity Information [Line Items]
Entity Registrant Name	CAMPBELL SOUP CO
Entity Central Index Key	0000016732
Current Fiscal Year End Date	--07-30
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Oct. 30, 2016
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		307,051,879
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes