Document and Entity Information (USD $)	6 Months Ended
	Oct. 31, 2014	Nov. 21, 2014
Document and Entity Information [Abstract]
Entity Registrant Name	J M SMUCKER Co
Entity Central Index Key	0000091419
Document Type	10-Q
Document Period End Date	Oct. 31, 2014
Amendment Flag	false
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--04-30
Entity Filer Category	Large Accelerated Filer
Entity Public Float		$ 9,803,675,128
Entity Common Stock, Shares Outstanding		101,817,058