Document And Entity Information	6 Months Ended
	Nov. 29, 2014	Dec. 26, 2014
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Nov. 29, 2014
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q2
Entity Registrant Name	CAL-MAINE FOODS INC
Entity Central Index Key	0000016160
Current Fiscal Year End Date	--05-30
Entity Filer Category	Large Accelerated Filer
Common Stock [Member]
Entity Common Stock, Shares Outstanding		43,581,654
Class A Common Stock [Member]
Entity Common Stock, Shares Outstanding		4,800,000