Document and Entity Information - shares	6 Months Ended
	Nov. 26, 2022	Dec. 28, 2022
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Nov. 26, 2022
Document Transition Report	false
Entity File Number	001-38695
Entity Registrant Name	CAL-MAINE FOODS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	64-0500378
Entity Address, Address Line One	1052 Highland Colony Pkwy
Entity Address Address Line 2	Suite 200
Entity Address, City or Town	Ridgeland
Entity Address, State or Province	MS
Entity Address, Postal Zip Code	39157
City Area Code	601
Local Phone Number	948-6813
Title of 12(b) Security	Common Stock, $0.01 par value per share
Trading Symbol	CALM
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Current Fiscal Year End Date	--06-03
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q2
Entity Central Index Key	0000016160
Common Stock [Member]
Entity Common Stock, Shares Outstanding		44,130,149
Class A Common Stock [Member]
Entity Common Stock, Shares Outstanding		4,800,000