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Obtained In Exchange For Lease Liability [Abstract] Equity Awards Adjustments Equity Awards Adjustments [Member] 2026 Purchase Obligation, to be Paid, Remainder of Fiscal Year Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Summary of Significant Accounting Policies [Table] Summary of Significant Accounting Policies [Table] Summary of Significant Accounting Policies Total liabilities and stockholders' equity Liabilities and Equity Variable lease cost Variable Lease, Cost Interest income Interest income Interest Income, Other Employee Stock Option Share-Based Payment Arrangement, Option [Member] Non-controlling interest Equity, Attributable to Noncontrolling Interest Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Net (losses) gains on long-term investment securities without a readily determinable fair value that does not qualify for the NAV practical expedient Net (losses) gains on long-term investment securities without a readily determinable fair value that does not qualify for the NAV practical expedient Gain (Loss) On Equity Securities Without Readily Determinable Fair Value Gain (Loss) On Equity Securities Without Readily Determinable Fair Value Restructuring Restructuring Charges Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] PropTech convertible trading debt securities Debt Securities, Trading Less PropTech current convertible trading debt securities Debt Securities, Current Tabular List, Table Tabular List [Table Text Block] Recognized expense Loss Contingency Accrual, Loss (Reversal of Loss) Restricted cash and cash equivalents included in other assets Restricted Cash and Cash Equivalent, Noncurrent Additional paid-in capital Additional Paid in Capital Name Awards Close in Time to MNPI Disclosures, Individual Name Stockholders' equity: Equity, Including 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Ancillary Services Restricted stock grant cancelled Stock Issued During Period, Value, Restricted Stock Award, Forfeitures Operations and support Operations And Support [Member] Operations And Support Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Property management Property Management [Member] Real Estate Segment [Member] Company Selected Measure Amount Company Selected Measure Amount Equity Method Investments and Joint Ventures [Abstract] Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Depreciation and amortization Depreciation and amortization Depreciation, Depletion and Amortization Schedule of Unrealized and Realized Losses Gain (Loss) on Securities [Table Text Block] Agent receivables, net Agent Receivables, Net, Current Agent Receivables, Net, Current Net loss Net (loss) income Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Current assets: Assets, Current [Abstract] Operating leases Operating Lease, Weighted Average Remaining Lease Term Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Income tax expense Income Tax Expense (Benefit) Restricted stock grant canceled (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Forfeited Costs related to sales Cost of Product and Service Sold Total Purchase Obligation Award Timing Method Award Timing Method [Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Net (decrease) increase in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Other intangible assets, net Other Intangible Assets, Net Proceeds from Legal Settlements Proceeds from Legal Settlements Net loss attributed to Douglas Elliman Inc. Net loss attributed to Douglas Elliman Inc. Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Discounted cash flow Valuation Technique, Discounted Cash Flow [Member] Location, Statement of Financial Position, Balance [Axis] Location, Statement of Financial Position, Balance [Axis] Proceeds from sale of equipment Proceeds from Sale of Property, Plant, and Equipment Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Certificates of Deposit Certificates of Deposit [Member] Restricted stock grants Stock Issued During Period, Value, Restricted Stock Award, Gross Settlement award Litigation Settlement, Amount Awarded to Other Party Schedule of Contract Balances Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Commissions payable Commissions Payable, Current Commissions Payable, Current Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Southeast US Southeast Region [Member] Revenues: Revenues [Abstract] Recoveries Accounts Receivable, Allowance for Credit Loss, Recovery Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]