Requisite service period EBP, Requisite Service Period EBP, Requisite Service Period Account balance amount with no timely election, automatic account roll-over, minimum EBP, Account Balance Amount With No Timely Election, Automatic Account Roll-Over, Minimum EBP, Account Balance Amount With No Timely Election, Automatic Account Roll-Over, Minimum Entity tax identification number Entity Tax Identification Number Rollover contributions EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover Maximum Maximum [Member] Change in loans deemed as distribution for Form 5500 purposes EBP, Reconciliation to Form 5500, Change in Net Asset Available for Benefit, Increase (Decrease) from Deemed Distribution Administrative expense paid from forfeitures EBP, Forfeited Nonvested Account, Decrease from Administrative Expense Legal Entity [Axis] Legal Entity [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] EBP, Description of Plan [Table] EBP, Description of Plan [Table] Mutual and registered investment funds Mutual Fund [Member] Deemed distributions during the year for Form 5500 purposes EBP, Reconciliation to Form 5500, Note Receivable, Deemed Distribution Investment sold EBP, Investment Sold, Excluding Plan Interest in Master Trust, Selling Price EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Table] Participant contribution, maximum percentage of total compensation per pay period EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage Total deductions EBP, Change in Net Asset Available for Benefit, Decrease Note receivable from participant, account, maximum borrowing, amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount FAIR VALUE MEASUREMENTS EBP, Investment, Fair Value and NAV [Text Block] Note receivable from participant, account, minimum borrowing, amount EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount Accrued expenses EBP, Accrued Expense Investments, at fair value EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value Cash and cash equivalents EBP, Cash And Cash Equivalents [Member] EBP, Cash And Cash Equivalents Change in loans deemed as distribution for financial statements reporting purposes EBP, Reconciliation to Form 5500, Change in Net Asset Available for Benefit, Increase (Decrease) from Deemed Distribution For Financial Statement Reporting EBP, Reconciliation to Form 5500, Change in Net Asset Available for Benefit, Increase (Decrease) from Deemed Distribution For Financial Statement Reporting Note receivable from participant, account, primary residence, maximum borrowing term EBP, Note Receivable From Participant, Account, Primary Residence, Maximum Borrowing Term EBP, Note Receivable From Participant, Account, Primary Residence, Maximum Borrowing Term Level 1 Fair Value, Inputs, Level 1 [Member] EBP, Reconciliation of Financial Statement to Form 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Table Text Block] Loans deemed as distribution for financial statements reporting purposes EBP, Reconciliation To Form 5500, Net Assets Available For Benefit, Deemed Distribution For Financial Statement EBP, Reconciliation To Form 5500, Net Assets Available For Benefit, Deemed Distribution For Financial Statement Net asset value per share (in dollars per share) EBP, Net Asset Value per Share or Unit Employer contribution maximum vesting age EBP, Employer Contribution Maximum Vesting Age EBP, Employer Contribution Maximum Vesting Age EBP, Investment, Fair Value and NAV [Abstract] Total assets EBP, Asset Assets EBP, Asset [Abstract] Statistical Measurement [Axis] Statistical Measurement [Axis] Additions EBP, Change in Net Asset Available for Benefit, Increase [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Table] Employer contribution, vesting percentage EBP, Employer Contribution, Vesting Percentage EBP, Employer Contribution, Vesting Percentage Payment of Benefits EBP, Payment to Participant [Policy Text Block] U.S. government debt securities US Treasury and Government [Member] Total liabilities EBP, Liability Amendment Flag Amendment Flag Deemed distributions during the year for Form 5500 purposes EBP, Reconciliation to Form 5500, Net Asset Available for Benefit, Deemed Distribution Basis of Accounting EBP, Basis of Accounting [Policy Text Block] EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Table] Notes receivable from participants per Form 5500 EBP, Form 5500 Caption, Participant Loans Account balance amount with no timely election, automatic account roll-over, maximum EBP, Account Balance Amount With No Timely Election, Automatic Account Roll-Over, Maximum EBP, Account Balance Amount With No Timely Election, Automatic Account Roll-Over, Maximum Investment interest rate EBP, Investment, Interest Rate Number of shares held (in shares) EBP, Investment, Number of Shares EBP, Description of Plan and Accounting Change [Abstract] Receivables: EBP, Receivable [Abstract] EBP, Investment, Fair Value and NAV EBP, Investment, Fair Value and NAV [Table Text Block] Retirement age EBP, Retirement Age EBP, Retirement Age Common Stocks Common Stock [Member] Investments [Domain] Investments [Domain] Common stock - others EBP, Nonemployer, Common Stock [Member] Use of Estimates EBP, Use of Estimate [Policy Text Block] Schedule H, Line 4i – Schedule of Assets (Held At End of Year) EBP, Schedule of Asset Held for Investment [Text Block] Cover [Abstract] RISKS AND UNCERTAINTIES EBP, Risk and Uncertainty [Text Block] Investment acquired, number of shares (in shares) EBP, Investment, Purchased, Number of Shares Minimum Minimum [Member] Fair Value Measurements EBP, Fair Value Measurements [Policy Text Block] EBP, Fair Value Measurements Investment Type [Axis] Investment Type [Axis] Interest income on notes receivable from participants EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Participants contributions EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover Net appreciation in fair value of investments EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment Interest and dividends EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment EBP, Description of Plan [Line Items] EBP, Description of Plan [Line Items] Participant loan, basis spread on variable rate, tranche two EBP, Participant Loan, Basis Spread On Variable Rate, Tranche Two EBP, Participant Loan, Basis Spread On Variable Rate, Tranche Two Plan number EBP, Plan Number Foreign government debt securities Sovereign Debt Securities [Member] Preferred stock Preferred Stock [Member] EBP, Investment, Fair Value and NAV [Line Items] EBP, Investment, Fair Value and NAV [Line Items] DESCRIPTION OF THE PLAN EBP, Description of Plan [Text Block] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Statement of Net Asset Available for Benefit [Table] Participant loan, basis spread on variable rate, tranche one EBP, Participant Loan, Basis Spread On Variable Rate, Tranche One EBP, Participant Loan, Basis Spread On Variable Rate, Tranche One EBP, Schedule of Asset Held for Investment [Line Items] EBP, Schedule of Asset Held for Investment [Line Items] Contributions EBP, Contribution [Policy Text Block] Common stock - Marriott International, Inc. EBP, Employer, Common Stock [Member] Automatic enrollment after service period with no election made EBP, Automatic Enrollment After Service Period With No Election EBP, Automatic Enrollment After Service Period With No Election EBP, Schedule of Asset Held for Investment [Abstract] EBP, Accounting Policy [Table] EBP, Accounting Policy [Table] Total additions EBP, Change in Net Asset Available for Benefit, Increase Dividend rate EBP, Investment, Dividend Rate EBP, Investment, Dividend Rate Investment, Identifier [Axis] Investment, Identifier [Axis] Administrative expenses EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense EBP, Asset Held for Investment, Total EBP, Asset Held for Investment Minimum account balance threshold for election of benefits EBP, Minimum Account Balance Threshold For Election Of Benefits EBP, Minimum Account Balance Threshold For Election Of Benefits Document Information [Line Items] Document Information [Line Items] EBP, Risk and Uncertainty [Line Items] EBP, Risk and Uncertainty [Line Items] Note receivable from participant, general loan, borrowing term EBP, Note Receivable From Participant, General Loan, Borrowing Term EBP, Note Receivable From Participant, General Loan, Borrowing Term EBP, Risk and Uncertainty [Table] EBP, Risk and Uncertainty [Table] Employer contribution, participant compensation matched, percentage EBP, Employer Contribution, Participant Compensation Matched, Percentage EBP, Statement of Change in Net Asset Available for Benefit [Abstract] Level 2 Fair Value, Inputs, Level 2 [Member] Investment sold, number of shares (in shares) EBP, Investment, Sold, Number of Shares Corporate bonds Corporate Bond Securities [Member] Participant loan, basis spread on variable rate, tranche three EBP, Participant Loan, Basis Spread On Variable Rate, Tranche Three EBP, Participant Loan, Basis Spread On Variable Rate, Tranche Three Note Receivable from participant, number of loans from account at a time EBP, Note Receivable From Participant, Number Of Loans From Account At A Time EBP, Note Receivable From Participant, Number Of Loans From Account At A Time Net increase in net assets available for benefits as reported in the Form 5500 EBP, Form 5500 Caption, Net Income (Loss) Marriott International, Inc. contributions EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash and Noncash EBP, Tax Status [Table] EBP, Tax Status [Table] Net increase Net increase in net assets available for benefits as reported in the financial statements EBP, Change in Net Asset Available for Benefit, Increase (Decrease) PARTY-IN-INTEREST EBP, Related Party and Party-in-Interest Transactions [Text Block] EBP, Related Party and Party-in-Interest Transactions [Abstract] EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] Total receivables EBP, Receivable Employer contributions receivable EBP, Employer Contribution, Receivable Participant contribution, automatic, deferral rate EBP, Participant Contribution, Automatic, Deferral Rate Dividend income EBP, Change in Net Asset Available for Benefit, Increase from Dividend Income on Investment Benefits paid to participants EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Asset held for investment EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value Loans deemed as distribution for the purpose of financial statements EBP, Reconciliation To Form 5500, Note Receivable, Deemed Distribution For Financial Statement EBP, Reconciliation To Form 5500, Note Receivable, Deemed Distribution For Financial Statement Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] EBP, Statement of Net Asset Available for Benefit [Abstract] EBP, Accounting Policy [Line Items] EBP, Accounting Policy [Line Items] EBP, Tax Status [Abstract] EBP, Employer, Common Stock Fund EBP, Employer, Common Stock Fund [Member] EBP, Reconciliation of Financial Statement to Form 5500 [Table] EBP, Reconciliation of Financial Statement to Form 5500 [Table] EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] Expenses EBP, Expense [Policy Text Block] Benefits paid to participants as reported in the Form 5500 EBP, Form 5500 Caption, Benefit Payment and Payments to Provide Benefits Corrective distributions for 2024 non-discrimination testing EBP, Reconciliation to Form 5500, Payment to Participant, Prior Period, Decrease from Deemed Distribution RECONCILIATION OF FINANCIAL STATEMENTS AND FORM 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Text Block] Participant loans EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution Investments Valuation and Income Recognition EBP, Investment [Policy Text Block] Total Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Document Type Document Type Entity Central Index Key Entity Central Index Key Participant loans, interest rate EBP, Asset Held for Investment, Participant Loan, Interest Rate EBP, Reconciliation of Financial Statement to Form 5500 [Abstract] Common/Collective Trust Common Collective Trust [Member] EBP, Risk and Uncertainty [Abstract] EBP, Tax Status [Line Items] EBP, Tax Status [Line Items] EBP, Subsequent Event [Table] EBP, Subsequent Event [Table] Deductions EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] Notes receivable from participants EBP, Note Receivable from Participant Involuntary cash-out limit EBP, Involuntary Cash-Out Limit EBP, Involuntary Cash-Out Limit Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES EBP, Summary of Accounting Policy [Text Block] Entity Registrant Name Entity Registrant Name Investment acquired EBP, Investment Acquired, Excluding Plan Interest in Master Trust, Cost EBP, Subsequent Event [Abstract] Liabilities EBP, Liability [Abstract] SUBSEQUENT EVENTS EBP, Subsequent Event [Text Block] INCOME TAX STATUS EBP, Tax Status [Text Block] Note receivable from participant, account, maximum borrowing, to total account, percentage EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Par value EBP, Investment, Par or Maturity Value EBP, Subsequent Event [Line Items] EBP, Subsequent Event [Line Items] Document Information [Table] Document Information [Table] EBP 004 EBP 004 [Member] EBP 004 Notes Receivable from Participants EBP, Note Receivable from Participant [Policy Text Block] Notice Period EBP, Fair Value, Investment, NAV, Redemption, Notice Period EBP, Related Party and Party-in-Interest Transactions [Line Items] EBP, Related Party and Party-in-Interest Transactions [Line Items] Level 3 Fair Value, Inputs, Level 3 [Member] Net assets available for benefits Net assets available for benefits at beginning of year Net assets available for benefits at end of year Net assets available for benefits as reported in financial statements EBP, Net Asset Available for Benefit Entity [Domain] Entity [Domain] Forfeited nonvested account EBP, Forfeited Nonvested Account Employer contribution, matching percentage EBP, Employer Contribution, Matching Percentage Net assets available for benefits as reported in Form 5500 EBP, Form 5500 Caption, Net Assets Fair Value Measured at Net Asset Value Per Share Fair Value Measured at Net Asset Value Per Share [Member] EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Table] EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Line Items]