Document and Entity Information Document (USD $)	12 Months Ended
	Nov. 29, 2014	Jan. 20, 2015	May 31, 2014
Document and Entity Information [Abstract]
Entity Registrant Name	CLARCOR INC.
Entity Central Index Key	0000020740
Current Fiscal Year End Date	--11-29
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Nov. 29, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		50,213,428
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 2,938,211,151