Document and Entity Information (USD $)	6 Months Ended
	Oct. 31, 2012	Nov. 30, 2012
Document and Entity Information [Abstract]
Entity Registrant Name	SMUCKER J M CO
Entity Central Index Key	0000091419
Document Type	10-Q
Document Period End Date	Oct. 31, 2012
Amendment Flag	false
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--04-30
Entity Filer Category	Large Accelerated Filer
Entity Public Float	$ 8,668,359,705
Entity Common Stock, Shares Outstanding		108,463,793