v3.26.1
Document and Entity Information - USD ($)
 12 Months Ended
May 30, 2026
Jul. 22, 2026
Nov. 28, 2025
Document Type 10-K    
Document Annual Report true    
Document Period End Date May 30, 2026    
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 Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
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    
Document Fin Stmt Error Correction Flag false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 3,825,418,582
Entity Common Stock, Shares Outstanding   46,917,080  
Documents Incorporated by Reference
DOCUMENTS INCORPORATED
BY REFERENCE
The information called for by Part III of this
Annual Report on Form 10-K is incorporated herein by reference
from the registrant’s
Definitive
Proxy Statement for
its 2026 annual meeting of
stockholders which will
be filed pursuant to Regulation
14A not later
than 120 days after
the
end of the fiscal year covered by this Annual Report on Form 10-K.
    
Current Fiscal Year End Date --05-30    
Amendment Flag false    
Document Fiscal Year Focus 2026    
Document Fiscal Period Focus FY    
Entity Central Index Key 0000016160    
Auditor Name Frost, PLLC    
Auditor Firm Id 5348    
Auditor Location Little Rock, Arkansas