Earnings Per Share and Stock Repurchase Activity (Calculation of Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Nov. 28, 2015	Aug. 29, 2015	May. 30, 2015	Feb. 28, 2015	Nov. 29, 2014	Aug. 30, 2014	May. 31, 2014	Mar. 01, 2014	Nov. 28, 2015	Nov. 29, 2014	Nov. 30, 2013
Earnings Per Share and Stock Repurchase Activity [Abstract]
Weighted average number of shares outstanding - Basic (in shares)									49,981,118	50,405,549	49,988,577
Dilutive effect of stock-based arrangements (in shares)									448,336	465,700	550,370
Weighted average number of shares outstanding - Diluted (in shares)									50,429,454	50,871,249	50,538,947
Net earnings attributable to CLARCOR Inc.	$ 33,053	$ 36,445	$ 38,497	$ 26,709	$ 43,508	$ 41,703	$ 34,552	$ 24,321	$ 134,704	$ 144,084	$ 118,076
Net earnings per common share attributable to CLARCOR Inc. - Basic (in dollars per share)	$ 0.67	$ 0.73	$ 0.77	$ 0.53	$ 0.87	$ 0.83	$ 0.68	$ 0.48	$ 2.70	$ 2.86	$ 2.36
Net earnings per common share attributable to CLARCOR Inc. - Diluted (in dollars per share)	$ 0.67	$ 0.72	$ 0.76	$ 0.53	$ 0.86	$ 0.82	$ 0.68	$ 0.48	$ 2.67	$ 2.83	$ 2.34