Document and Entity Information	6 Months Ended
	May 28, 2011
Entity Information [Line Items]
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, 2011
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding	50,410,377