Document and Entity Information [Abstract] Document Information [Table] Legal Entity [Axis] Entity [Domain] Represents the Retirement Plan no.111. E B P 111 [Member] Dillard's, Inc. Investment & Employee Stock Ownership Plan Document Information [Line Items] Document Type Document Period End Date Entity Registrant Name Entity Central Index Key Amendment Flag STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS EBP, Statement of Net Asset Available for Benefit [Table] Investment Type [Axis] Investments [Domain] EBP, Employer, Common Stock [Member] Dillard's, Inc. common stock Mutual Fund [Member] Mutual funds Common Collective Trust [Member] Collective trust funds EBP, Statement of Net Asset Available for Benefit [Line Items] STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS EBP, Asset [Abstract] ASSETS EBP, Investment, Fair Value [Abstract] Investments, at fair value: EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value Total investments EBP, Noninterest-Bearing Cash Non-interest bearing cashs EBP, Receivable [Abstract] Receivables: EBP, Employer Contribution, Receivable Employer contributions EBP, Investment Income, Receivable Accrued interest & dividends EBP, Note Receivable from Participant Notes receivable from participants EBP, Receivable Total receivables EBP, Asset Total assets EBP, Liability [Abstract] LIABILITIES EBP, Accrued Expense Administrative expenses payable EBP, Other Liability Other liabilities EBP, Liability Total liabilities EBP, 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 STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS EBP, Change in Net Asset Available for Benefit, Increase [Abstract] ADDITIONS: EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment [Abstract] Investment income: EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment Net appreciation in fair value of investments EBP, Change in Net Asset Available for Benefit, Increase from Dividend Income on Investment Dividends EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Other Investment Income (Loss) Other EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment Total investment income EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Interest income on notes receivable from participants EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] Contributions: EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution Participant EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash and Noncash Employer EBP, Change in Net Asset Available for Benefit, Increase from Contribution Total contributions EBP, Change in Net Asset Available for Benefit, Increase Total additions EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] DEDUCTIONS: EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Distributions to participants EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Administrative expenses EBP, Change in Net Asset Available for Benefit, Decrease Total deductions EBP, Change in Net Asset Available for Benefit, Increase (Decrease) NET INCREASE IN NET ASSETS AVAILABLE FOR BENEFITS DESCRIPTION OF PLAN EBP, Description of Plan [Table] EBP, Description of Plan [Line Items] DESCRIPTION OF PLAN EBP, Description of Plan [Text Block] DESCRIPTION OF PLAN SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES EBP, Accounting Policy [Table] EBP, Accounting Policy [Line Items] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES EBP, Summary of Accounting Policy [Text Block] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES FAIR VALUE MEASUREMENTS EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Line Items] FAIR VALUE MEASUREMENTS EBP, Investment, Fair Value and NAV [Text Block] FAIR VALUE MEASUREMENTS RELATED PARTY AND PARTY-IN-INTEREST TRANSACTIONS EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Line Items] RELATED PARTY AND PARTY-IN-INTEREST TRANSACTIONS EBP, Related Party and Party-in-Interest Transactions [Text Block] RELATED PARTY AND PARTY-IN-INTEREST TRANSACTIONS TAX STATUS EBP, Tax Status [Table] EBP, Tax Status [Line Items] TAX STATUS EBP, Tax Status [Text Block] TAX STATUS SUBSEQUENT EVENTS EBP, Subsequent Event [Table] EBP, Subsequent Event [Line Items] SUBSEQUENT EVENTS EBP, Subsequent Event [Text Block] SUBSEQUENT EVENTS SCHEDULE H, PART IV, LINE 4i - SCHEDULE OF ASSETS (HELD AT END OF YEAR) EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Line Items] SCHEDULE H, PART IV, LINE 4i - SCHEDULE OF ASSETS (HELD AT END OF YEAR) EBP, Schedule of Asset Held for Investment [Text Block] SCHEDULE H, PART IV, LINE 4i - SCHEDULE OF ASSETS (HELD AT END OF YEAR) EBP, Basis of Accounting [Policy Text Block] Basis of Accounting EBP, Use of Estimate [Policy Text Block] Use of Estimates EBP, Risk and Uncertainty [Policy Text Block] Risk and Uncertainties EBP, Investment [Policy Text Block] Investment Valuation and Income Recognition EBP, Note Receivable from Participant [Policy Text Block] Notes Receivable from Participants EBP, Payment to Participant [Policy Text Block] Payment of Benefits EBP, Investment, Fair Value and NAV [Table Text Block] Schedule of plan's investment assets at fair value Statistical Measurement [Axis] Statistical Measurement [Domain] Maximum [Member] Maximum Scenario [Axis] Scenario [Domain] Member representing the first tier of participant contributions under the employee benefit plan matching contribution formula to which a specified employer matching contribution percentage applies. Employee Benefit Plan, Matching Contribution, First Tier [Member] First Tier Member representing the second tier of participant contributions under the employee benefit plan matching contribution formula to which a specified employer matching contribution percentage applies. Employee Benefit Plan, Matching Contribution, Second Tier [Member] Second Tier Represents the minimum age criteria for plan eligibility under (employee benefit plan (EBP)). Employee Benefit Plan, Minimum Age For Plan Eligibility Minimum age for Plan eligibility Represents the minimum service period for plan eligibility under (employee benefit plan (EBP)). Employee Benefit Plan, Minimum Service Period For Plan Eligibility Minimum service period for Plan eligibility Represents the minimum service period for plan eligibility under (employee benefit plan (EBP)) of employee denominated in hours. Employee Benefit Plan, Minimum Service Period of Employee For Plan Eligibility in Hours Minimum hours for Plan eligibility Percentage of eligible compensation that participants are permitted to contribute to the employee benefit plan as basic salary deferral contributions under the terms of the plan. Employee Benefit Plan, Participant Contribution, Maximum Basic Salary Deferral Contribution, Percent Maximum automatic deferral contributions, percent EBP, Participant Contribution, Automatic, Deferral Rate Automatic deferral contribution, percent Percentage of automatic increase per year in pretax annual compensation that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), contributes to total pretax annual compensation. Employee Benefit Plan, Participant Contribution, Automatic Increase Per Year, Percent Increase in automatic deferral contributions, Percent Number of years required before employer matching contributions become fully vested under the cliff vesting schedule. Employee Benefit Plan, Employer Contribution Cliff Vesting Period Employer contribution cliff vesting period EBP, Employer Contribution, Matching Percentage Employer matching contribution (as a percent) EBP, Employer Contribution, Participant Compensation Matched, Percentage Participant compensation matched (as a percent) EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage Employee contribution Minimum percentage increment by which participants may elect contribution percentages under the plan. Employee Benefit Plan, Participant Contribution Increment Percentage Participant contribution increment percentage Represents the percentage of vesting. Employee Benefit Plan, Vesting Percentage Vesting percentage Number of years required before employer matching contributions become fully vested under the cliff vesting schedule. Employee Benefit Plan, Employer Contribution Minimum Cliff Vesting Period Employer contribution minimum cliff vesting period EBP, Forfeited Nonvested Account, Decrease from Employer Contribution Amount of forfeited nonvested accounts used to offset employer contributions Number of years following termination of employment before vested employer matching contributions become distributable under the terms of the plan. Employee Benefit Plan, Employer Match Distribution Waiting Period Employer match distribution waiting period Age specified by the employee benefit plan at which a participant is considered to have reached normal retirement eligibility for purposes of benefit entitlement or distribution. Employee Benefit Plan, Normal Retirement Age Normal retirement age Amount below or equal to which a participant's vested account balance may be automatically distributed in cash when no distribution election is made. Employee Benefit Plan, Automatic Cash-Out Threshold Automatic Cash out threshold Maximum vested account balance amount eligible for mandatory distribution without participant consent under the provisions of the plan. Employee Benefit Plan, Mandatory Distribution Maximum Amount Mandatory distribution maximum amount Minimum vested account balance amount for which the participant must receive a rollover and tax notice before distribution. Employee Benefit Plan, Minimum Balance Subject to Rollover Notice Minimum balance subject to rollover notice Number of days provided to a participant to make a distribution or rollover election before distribution of plan benefits. Employee Benefit Plan, Distribution Election Notice Period Distribution election notice period Represents the participant age requirement for withdrawal related to employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Employee Benefit Plan, Threshold Participant Age For Withdrawal Threshold participant age for withdrawal Minimum [Member] Minimum Represents the percentage of vesting of participant accounts in the event of termination. Employee Benefit Plan, Vesting Percentage in Event of Termination Vesting percentage EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount Note receivable, minimum borrowing amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount Note receivable, maximum borrowing amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Note receivable, maximum borrowing percentage Term of general notes receivable in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Employee Benefit Plan, General Notes Receivable, Term General purpose loan, maximum repayment term Term of notes receivable which is related to purchase of primary residence purpose in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Employee Benefit Plan, Notes Receivable Related To Purchase Of Primary Residence, Term Primary residence loan, maximum repayment term Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Fair Value, Inputs, Level 1 [Member] Level 1 Fair Value Measured at Net Asset Value Per Share [Member] Net Asset Value Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent events Quoted market price per share of employer common stock held or referenced by the employee benefit plan. Employee Benefit Plan, Employer Stock Quoted Market Price Per Share Quoted market price of company common stock EBP, Fair Value, Investment, NAV, Unfunded Commitment Unfunded commitment amount EBP, Related Party and Party-in-Interest [Axis] EBP, Related Party and Party-in-Interest [Domain] Employer of participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Employee Benefit Plan, Employer [Member] Company EBP, Employer, Officer [Member] Officer or employee EBP, Investment, Number of Shares Number of shares held Percentage of net assets available for benefits represented by investments in employer common stock. Employee Benefit Plan, Employer Stock Percentage of Net Assets Employer stock as a percentage of Net assets Amount of increase in net asset available for benefit administrative compensation dividend income on investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseForAdministrativeCompensationExpense Compensation received EBP, Tax Determination Letter, Obtained [true false] Determination letter obtained EBP, Tax Determination Letter, Date Determination letter date EBP, Tax Qualification Status [Extensible Enumeration] Tax qualification status Special dividend declared per share on employer common stock held by the employee benefit plan. Employee Benefit Plan, Special Dividend Per Share on Employer Stock Special dividend per share Amount of employer stock dividends elected by participants to be received as cash distributions rather than reinvested in the employee benefit plan. Employee Benefit Plan, Participant Elected Cash Dividend Distribution Amount Participant elected cash dividend distribution amount Total amount of special dividends declared on employer stock attributable to the employee benefit plan during the reporting period. Employee Benefit Plan, Special Dividend Amount Special dividend amount Investment, Identifier [Axis] Entity Tax Identification Number Employer Identification Number EBP, Plan Number Plan number EBP, Investment, Issuer Name [Extensible Enumeration] EBP, Investment, Current Value, Type [Extensible Enumeration] Face amount or stated value per share of common stock. Employee Benefit Plan, Common Stock, Par or Stated Value Per Share Par value EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value Current Value EBP, Asset Held for Investment, Participant Loan, Interest Rate Notes receivable from participants, Interest rate EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution Notes receivable from participants, Current Value EBP, Asset Held for Investment Total Assets Held for Investment, Current Value EBP, Asset Held for Investment, Party-in-Interest [true false] Party-in-interest EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]