Document and Entity Information - shares	6 Months Ended
	May 28, 2016	Jun. 13, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	CLARCOR INC.
Entity Central Index Key	0000020740
Current Fiscal Year End Date	--12-03
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	May 28, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		48,760,707