Common Stock [Member] Fair Value Inputs Level1 [Member] Fair Value, Inputs, Level 1 [Member] Fair Value Inputs Level 2 [Member] Fair Value Inputs Level 3 [Member] Fair Value Measurements Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Axis] Investment Type Categorization [Member] Investments [Domain] Defined Contribution Plan, Employer Discretionary Contribution Amount Discretionary contributions Investment Type [Axis] Mutual Fund [Member] Mutual Funds [Member] Fair Value Measured At Net Asset Value Per Share [Member] Assets Measured At NAV [Member] Fair Value Inputs Level 12 And 3 [Member] Defined Benefit Plan Common Collective Trust [Member] Common Collective Trust Funds [Member] Investment, Identifier [Axis] Document And Entity Information [Abstract] Document Type Amendment Flag Document Period End Date Legal Entity [Axis] Entity [Domain] Entity [Domain] Entity Registrant Name Entity Central Index Key Entity Tax Identification Number EIN Employee Benefit Plan, Schedule of Asset Held for Investment [Table Text Block] Schedule of Assets Employee Benefit Plan Expense [Policy Text Block] Administrative Expenses Employee Benefit Plan Investment Excluding Plan Interest In Master Trust Cost Cost Employee Benefit Plan, Payment to Participant [Policy Text Block] Payment of Benefits Employee Benefit Plan, Net Asset Available for Benefit Net assets available for benefits, end of year Net assets available for benefits, beginning of year Net assets available for benefits Net assets available for benefits Employee Benefit Plan, Change in Net Asset Available for Benefit, Decrease Total deductions Total deductions Employee Benefit Plan, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover Participant Employee Benefit Plan, Note Receivable from Participant [Policy Text Block] Notes Receivable from Participants Employee Benefit Plan, Schedule of Asset Held for Investment [Table] Employee Benefit Plan, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment Net change in fair value of investments Employee Benefit Plan, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Interest income on notes receivable from participants Employee Benefit Plan, Note Receivable from Participant Notes receivable from participants Employee Benefit Plan Asset Held For Investment Participant Loan After Deemed Distribution Participant Loans Employee Benefit Plan, Description of Plan [Text Block] Summary of Significant Plan Provisions Employee Benefit Plan Asset Held For Investment Total Employee Benefit Plan Change In Net Asset Available For Benefit Increase For Participant Contribution Total contributions Employee Benefit Plan, Change in Net Asset Available for Benefit, Increase Total additions Total additions Employee Benefit Plan Change In Net Asset Available For Benefit Increase For Participant Contribution Rollover Rollover Employee Benefit Plan, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Benefits paid to participants Employee Benefit Plan Employer Common Stock [Member] Cal-Maine Foods, Inc. Common Stock [Member] Employee Benefit Plan, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment Total investment income Total investment income Employee Benefit Plan, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash and Noncash Employer Employee Benefit Plan, Tax Status [Text Block] Tax Status Employee Benefit Plan, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value Current Value Employee Benefit Plan, Schedule of Asset Held for Investment [Line Items] Employee Benefit Plan, Investment, Fair Value Investments, at fair value Employee Benefit Plan Change In Net Asset Available For Benefit Increase For Dividend Income On Investment Dividends Employee Benefit Plan, Note Receivable from Participant, Allowance for Credit Loss Note receivable from participant, allowance for credit loss Employee Benefit Plan, Change in Net Asset Available for Benefit, Increase (Decrease) Net change in net assets available for benefits Net increase in net assets available for benefits Employee Benefit Plan, Asset Held for Investment, Participant Loan, Interest Rate Interest rate Employee Benefit Plan, Change in Net Asset Available for Benefit, Decrease [Abstract] Deductions: Employee Benefit Plan, Change in Net Asset Available for Benefit, Increase [Abstract] Additions: Employee Benefit Plan, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment [Abstract] Investment income: Employee Benefit Plan Change In Net Asset Available For Benefit Increase For Contribution [Abstract] Contributions Employee Benefit Plan, Investment, Excluding Plan Interest in Master Trust, Fair Value Plan's assets at fair value Fair Value Employee Benefit Plan, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Administrative expenses Tax Status [Abstract] Employee Benefit Plan Receivable [Abstract] Receivables Employee Benefit Plan, Description of Plan [Table] Employee Benefit Plan, Description of Plan [Line Items] Employee Benefit Plan, Accounting Policy [Table] Employee Benefit Plan, Accounting Policy [Line Items] Employee Benefit Plan, Tax Status [Table] Employee Benefit Plan, Tax Status [Line Items] Schedule of Assets [Abstract] Summary of Significant Plan Provisions [Abstract] Employee Benefit Plan Plan Number Employee Benefit Plan Risk And Uncertainty [Text Block] Risk And Uncertainties Statements of Changes in Net Assets Available for Benefits [Abstract] Employee Benefit Plan, Statement of Change in Net Asset Available for Benefit [Line Items] Employee Benefit Plan, Statement of Change in Net Asset Available for Benefit [Table] Statements of Net Assets Available for Benefits [Abstract] Employee Benefit Plan, Statement of Net Asset Available for Benefit [Line Items] Employee Benefit Plan, Statement of Net Asset Available for Benefit [Table] Employee Benefit Plan Investment Type Extensible Enumeration Employee Benefit Plan, Use of Estimate [Policy Text Block] Use of Estimates Employee Benefit Plan, Employer Contribution, Matching Percentage Employer contribution, matching percentage Employee Benefit Plan Investment Number Of Shares Number of shares Employee Benefit Plan Participant Contribution Automatic Deferral Rate Deferral rate of eligible employee enrolled in plan Employee Benefit Plan Note Receivable From Participant Account Minimum Borrowing Amount Note receivable from participant, account, minimum borrowing, amount Employee Benefit Plan, Note Receivable from Participant, Account, Maximum Borrowing, Amount Note receivable from participant, account, maximum borrowing, amount Employee Benefit Plan Investment Issuer Name Extensible Enumeration Employee Benefit Plan Employer Contribution Receivable Employer contributions EBP, Participant Contribution, Receivable Participant contributions Employee Benefit Plan, Investment [Policy Text Block] Investment Valuation and Income Recognition Employee Benefit Plan, Summary of Accounting Policy [Text Block] Summary of Significant Accounting Policies Employee Benefit Plan Note Receivable From Participant Account Maximum Borrowing To Total Account Percentage Note receivable from participant, account, maximum borrowing, percent Party-in-Interest and Related Party Transactions [Abstract] Employee Benefit Plan, Asset [Abstract] Assets Summary of Significant Accounting Policies [Abstract] Employee Benefit Plan, Related Party and Party-in-Interest Transactions [Text Block] Party-in-Interest and Related Party Transactions Employee Benefit Plan, Investment, Fair Value and NAV [Line Items] Employee Benefit Plan, Investment, Fair Value and NAV [Table] Employee Benefit Plan, Investment, Fair Value and NAV [Table Text Block] Investments Measured and Recognized at Fair Value and Additional Disclosures for NAV Employee Benefit Plan, Basis of Accounting [Policy Text Block] Basis of Accounting Employee Benefit Plan, Investment, Fair Value and NAV [Text Block] Fair Value Measurements Employee Benefit Plan Cash Noninterest-bearing cash Fair Value Measurements [Abstract] Employee Benefit Plan, Related Party and Party-in-Interest Transactions [Line Items] Employee Benefit Plan, Related Party and Party-in-Interest Transactions [Table] Ebp Risk And Uncertainty [Table] Ebp Risk And Uncertainty [Abstract] Ebp Fair Value Investment Nav Redemption Notice Period Redemption Notice Period Ebp Risk And Uncertainty [Line Items] Ebp Risk And Uncertainty Concentration Of Investment At Fair Value To Net Assets Percentage Concentration of investment at fair value to net assets Ebp Risk And Uncertainty Concentration Of Investment Benchmark Threshold Percentage Concertration percent of investments Statistical Measurement [Axis] Range [Member] Range [Domain] Maximum [Member] Maximum [Member] Minimum [Member] Minimum [Member] EBP, Risk and Uncertainty, Concentration of Investment at Fair Value to Net Assets, Number of Investments Number of investments used to calculate concentration of investment at fair value to net assets Number of investments used to calculate concentration of investment at fair value to net assets. Employee Benefit Plan, Participant Contribution Age For Catch-Up Contributions Employee Benefit Plan Participant Contribution Age For Catch-Up Contributions Age for catch-up contributions EPB 001 [Member] EPB 001 [Member] EPB 001 [Member] Employee Benefit Plan, Age For Eligibility Employee Benefit Plan, Age For Eligibility Age for eligibility Employee Benefit Plan Participant Contribution Automatic Deferral Rate, Increase Rate Employee Benefit Plan Participant Contribution Automatic Deferral Rate, Increase Rate Deferral increase rate Employee Benefit Plan Note Receivable From Participant Note Term Employee Benefit Plan Note Receivable From Participant Note Term Note receivable from participant note term Employee Benefit Plan Note Receivable From Participant Note Term For Purchase Of Primary Residence Employee Benefit Plan Note Receivable From Participant Note Term For Purchase Of Primary Residence Note receivable from participant note term for primary residence Employee Benefit Plan, Payment Of Benefits, Account, Age For In Service Withdrawals Employee Benefit Plan, Payment Of Benefits, Account, Age For In Service Withdrawals Age for in service withdrawals Employee Benefit Plan, Payment Of Benefits, Vested Balance Amount For Automatic Distribution Employee Benefit Plan, Payment Of Benefits, Vested Balance Amount For Automatic Distribution Vested balance amount for automatic distribution Employee Benefit Plan Investment Par Value Per Share Employee Benefit Plan Investment Par Value Per Share Par value per share