Statistical Measurement [Domain] Statistical Measurement [Domain] Other current assets Other Current Assets [Member] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Settled Litigation Settled Litigation [Member] Commission and other brokerage income - development marketing Commission and Other Brokerage Income, Development Marketing [Member] Commission and Other Brokerage Income, Development Marketing Current restricted assets Restricted Cash, Current Award Timing Predetermined Award Timing Predetermined [Flag] Remainder of 2026 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Entity File Number Entity File Number Additional Paid-In Capital Additional Paid-in Capital [Member] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Other Noncurrent Assets Other Noncurrent Assets [Member] Equity in earnings from equity-method investments Equity in earnings from equity-method investments Income (Loss) from Equity Method Investments Tabular List, Table Tabular List [Table Text Block] Leases [Abstract] Leases [Abstract] Per basic common share: Earnings Per Share, Basic [Abstract] New Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Purchase of short-term investments Payments to Acquire Short-Term Investments Contract assets, net, which are included in other current assets Contract with Customer, Asset, after Allowance for Credit Loss, Current Property management revenue Property Management Income [Member] Property Management Income [Member] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Net loss applicable to common shares attributed to Douglas Elliman Inc. 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PEO Name PEO Name Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Purchase of subsidiaries Payments to Acquire Interest in Subsidiaries and Affiliates Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Current liabilities Current Liabilities [Member] Current Liabilities Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Contract liabilities Contract liabilities, current Contract with Customer, Liability, Current Segments [Axis] Segments [Axis] Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Contract assets, net Contract assets, net, non-current Contract with Customer, Asset, after Allowance for Credit Loss, Noncurrent Long-term investments Investments, Fair Value Disclosure [Abstract] Recognized expense Loss Contingency Accrual, Provision ASSETS: Assets [Abstract] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Statement of Financial Position Location, Balance [Axis] Statement of Financial Position Location, Balance [Axis] Debt Instrument [Axis] Debt Instrument [Axis] FAIR VALUE MEASUREMENTS Fair Value Disclosures [Text Block] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Entity Address, Address Line One Entity Address, Address Line One Independent Contractors Formerly Associated With Douglas Elliman Inc. 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Net loss attributed to Douglas Elliman Inc. 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Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Executive Category: Executive Category [Axis] 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 Aggregate payment Repayments of Debt Current Fiscal Year End Date Current Fiscal Year End Date Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Statement [Table] Statement [Table] Adjustments to reconcile net loss to net cash used in operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Weighted-average number of shares issuable upon conversion of debt (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount All Adjustments to Compensation All Adjustments to Compensation [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Amendment Flag Amendment Flag Less PropTech current convertible trading debt securities Debt Securities, Current LEASES Lessee, Operating Leases [Text Block] Termination Date Trading Arrangement Termination Date Contract assets, net Increase (Decrease) in Contract with Customer, Asset Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Provision for credit losses Financing Receivable, Credit Loss, Expense (Reversal) Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Operating leases Operating Lease, Weighted Average Discount Rate, Percent Weighted-average shares for basic EPS (in shares) Weighted Average Number of Shares Outstanding, Basic Costs related to sales Cost of Product and Service Sold Schedule of Net Income for Purposes of Determining Basic and Diluted EPS Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Restricted cash and cash equivalents included in other assets Restricted Cash and Cash Equivalent, Noncurrent Segment Reporting [Abstract] Segment Reporting [Abstract] Other ancillary services Other Ancillary Services [Member] Other Ancillary Services Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Operations and support Operations And Support [Member] Operations And Support Debt Disclosure [Abstract] Debt Disclosure [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Other income (expenses): Nonoperating Income (Expense) [Abstract] Entity Tax Identification Number Entity Tax Identification Number Discounted cash flow Valuation Technique, Discounted Cash Flow [Member] Write-offs Accounts Receivable, Allowance for Credit Loss, Writeoff Property management Property Management [Member] Real Estate Segment [Member] Accrued interest Interest Paid, Including Capitalized Interest, Operating and Investing Activities Current portion of antitrust litigation settlement Estimated Litigation Liability, Current Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Schedule of Basic and Diluted EPS Calculation Shares Schedule of Weighted Average Number of Shares [Table Text Block] Common stock, shares issued (in shares) Common Stock, Shares, Issued Agent receivables, net Agent Receivables, Net, Current Agent Receivables, Net, Current Operating leases Operating Lease, Weighted Average Remaining Lease Term Estimates and Assumptions Use of Estimates, Policy [Policy Text Block] PropTech convertible trading debt securities Convertible Debt Securities [Member] Settlement award Litigation Settlement, Amount Awarded to Other Party Interest expense Interest expense Interest Expense, Nonoperating Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Northeast US Northeast Region [Member] Convertible trading debt securities input Debt Instrument, Measurement Input Loss Contingencies [Line Items] Loss Contingencies [Line Items] Schedule of Financial Assets and Liabilities Subject to Fair Value Measurements Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Insider Trading Arrangements [Line Items] Security Exchange Name Security Exchange Name Foreign Income Tax Paid, Foreign, after Refund Received Total liabilities Liabilities Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Investment and other losses Investment and other losses Investment Income, Net Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Other current liabilities Other Liabilities, Current Statement [Line Items] Statement [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Commissions payable Commissions Payable, Current Commissions Payable, Current Common Stock Common Stock [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] 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