Document and Entity Information Document (USD $)	12 Months Ended
	Jul. 29, 2012	Sep. 14, 2012	Jan. 29, 2012
Entity Information [Line Items]
Entity Registrant Name	CAMPBELL SOUP CO
Entity Central Index Key	0000016732
Current Fiscal Year End Date	--07-29
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Jul. 29, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q4
Amendment Flag	false
Entity Common Stock, Shares Outstanding		313,547,620
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 5,793,740,752