Net proceeds from the sale of a business Proceeds from Divestiture of Businesses Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Accrued expenses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Total cash provided by discontinued operations Cash Provided by (Used in) Discontinued Operation Award Timing Predetermined Award Timing Predetermined [Flag] Awards Outstanding & Exercisable Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding [Abstract] Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding [Abstract] Indefinite-Lived Intangible Assets [Axis] Indefinite-Lived Intangible Assets [Axis] Entity File Number Entity File Number Additional Paid-in Capital Additional Paid-in Capital [Member] Tabular List, Table Tabular List [Table Text Block] FINANCIAL STATEMENT DETAILS Additional Financial Information Disclosure [Text Block] Recent Accounting 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Commissions and Fees Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Schedule of Cash and Cash Equivalents Schedule of Cash and Cash Equivalents [Table Text Block] Current income tax provision Current Income Tax Expense (Benefit) Net adjustment related to the reconciliation of income tax provision accruals to tax returns Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount Adjustment to Compensation, Amount Adjustment to Compensation Amount Other assets Increase (Decrease) in Other Operating Assets Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Stock Options Share-Based Payment Arrangement, Option [Member] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Income tax payments, including amounts paid to IAC for Angi’s share of IAC's consolidated tax liability Income Taxes Paid Percent Effective Income Tax Rate 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Class A and Class B Common Stock shareholders Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Other Current Assets Prepaid Expense and Other Assets, Current [Abstract] Letter of Credit Letter of Credit [Member] Purchase of noncontrolling interests Purchase of noncontrolling interests Payments to Noncontrolling Interests U.S.  Income (Loss) from Continuing Operations before Income Taxes, Domestic Share-Based Payment Arrangement, Expensed and Capitalized, Amount Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Current lease liabilities Operating Lease, Liability, Current Capitalized internal use software Software and Software Development Costs [Member] Document Fiscal Period Focus Document Fiscal Period Focus Total goodwill and intangible assets, net Intangible Assets, Net (Including Goodwill) Capitalized research & development expenditures Deferred Tax Assets, Capitalized Research And Development Expenditures Deferred Tax 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Event [Member] Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Depreciation Depreciation Money market funds Money Market Funds [Member] Equity Components [Axis] Equity Components [Axis] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Sublease Income Sublease Income Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Number of reportable segments Number of Reportable Segments BENEFIT PLANS Compensation and Employee Benefit Plans [Text Block] Deferred tax assets: Components of Deferred Tax Assets [Abstract] September 2025 Share Authorization September 2025 Share Authorization [Member] September 2025 Share Authorization Advertising Costs Advertising Cost [Policy Text Block] Entity Address, State or Province Entity Address, State or Province Lease impairment charges Operating Lease, Impairment Loss Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Total current liabilities Liabilities, Current Forfeited (USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option and Option Equity Instruments, Forfeitures in Period, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Non-Option and Option Equity Instruments, Forfeitures in Period, Weighted Average Exercise Price Replacement Awards (USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Replacement Awards, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Replacement Awards, Weighted Average Grant Date Fair Value Individual: Individual [Axis] Defined contribution plan contributions Defined Contribution Plan, Cost Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Document Annual Report Document Annual Report Product development expense Research and Development Expense [Member] Employer contribution limit per calendar year, amount Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount Other Accounts Receivable, Allowance for Credit Loss, Other Accounts Receivable, Allowance for Credit Loss, Other Replacement Awards (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Replacement Awards Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Replacement Awards Forgone Recovery, Explanation of Impracticability 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Comprehensive Income (Loss), Net of Tax Selling and marketing expense Selling and Marketing Expense Retirement Plan Sponsor Location [Domain] Retirement Plan Sponsor Location [Domain] Total deferred tax liabilities Deferred Tax Liabilities, Gross PSUs Performance Shares [Member] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Total Home Roofing Total Home Roofing [Member] Total Home Roofing Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Minimum Minimum [Member] Company Selected Measure Name Company Selected Measure Name Fair Value Measurement [Domain] Fair Value Measurement [Domain] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Accounts payable Accounts Payable, Current Cash paid for amounts included in the measurement of lease liabilities Operating Lease, Payments U.S. U.S. Segment [Member] U.S. Segment Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Net earnings (loss) attributable to Angi Inc. shareholders, diluted Net Income (Loss) Available to Common Stockholders, Diluted Stockholders' Equity Note [Abstract] Foreign Current Foreign Tax Expense (Benefit) Goodwill Goodwill [Roll Forward] Exercised (USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option and Option Equity Instruments, Exercises in Period, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Non-Option and Option Equity Instruments, Exercises in Period, Weighted Average Exercise Price Share-Based Payment Arrangement, Tranche Two Share-Based Payment Arrangement, Tranche Two [Member] Revenue Disposal Group, Including Discontinued Operation, Revenue Denominator for earnings (loss) per share - weighted average shares, diluted (shares) Weighted Average Number of Shares Outstanding, Diluted Segment Change Segment Reporting, Policy [Policy Text Block] 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Exercisable, Weighted Average Remaining Contractual Term Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date Unrecognized tax benefits including tax interest accrued Unrecognized Tax Benefits Including Tax Interest Accrued The gross amount of unrecognized tax benefits, including interest, pertaining to uncertain tax positions taken in tax returns as of the balance sheet date. Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] INCOME TAXES Income Tax Disclosure [Text Block] Balance at January 1 Balance at December 31 Accounts Receivable, Allowance for Credit Loss Class A Common Stock Class A Common Stock $0.001 Par Value Common Class A [Member] United Kingdom UNITED KINGDOM Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Weighted-average exercise price (USD per share) Share-based Payment Arrangement, Equity Instruments Other than Options and Options, Exercise Price Range, Outstanding and Exercisable, Weighted Average Exercise Price Share-based Payment Arrangement, Equity Instruments Other than Options and Options, Exercise Price Range, Outstanding and Exercisable, Weighted Average Exercise Price Operating lease, liability, noncurrent, balance sheet location [Extensible List] Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Operating lease liabilities Increase (Decrease) in Operating Lease Liability Total shareholders’ equity Balance at beginning of period Balance at end of period Equity, Including Portion Attributable to Noncontrolling Interest Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items] Document Type Document Type Level 3 Fair Value, Inputs, Level 3 [Member] EARNINGS (LOSS) PER SHARE Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Product and Service [Axis] Product and Service [Axis] Variable lease expense Variable Lease, Cost Revenue Revenue from Contract with Customer, Excluding Assessed Tax Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Commitment fee percentage on undrawn amounts Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Disposal Group Name [Axis] Disposal Group Name [Axis] Withholding taxes paid on behalf of employees on net settled stock-based awards Payment, Tax Withholding, Share-Based Payment Arrangement France FRANCE Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Net earnings (loss) attributable to Angi Inc. shareholders Net Income (Loss) Available to Common Stockholders, Basic Loss from discontinued operations before tax Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax Share Repurchase Program [Domain] Share Repurchase Program [Domain] Indefinite-lived impairment measure input Indefinite-Lived Intangible Asset, Measurement Input Indefinite-Lived Intangible Asset, Measurement Input Adjusted EBITDA Total Segment Adjusted EBITDA Adjusted EBITDA The Company's primary financial measure is Adjusted EBITDA, which is defined as operating income excluding: (1) stock-based compensation expense; (2) depreciation; and (3) acquisition-related items consisting of (i) amortization of intangible assets and impairments of goodwill and intangible assets, if applicable, and (ii) gains and losses recognized on changes in the fair value of contingent consideration arrangements. The Company believes this measure is useful for analysts and investors as this measure allows a more meaningful comparison between our performance and that of our competitors. Moreover, our management uses this measure internally to evaluate the performance of our business as a whole and our individual business segments, and this measure is one of the primary metrics by which our internal budgets are based and by which management is compensated. The above items are excluded from our Adjusted EBITDA measure because these items are non-cash in nature, and we believe that by excluding these items, Adjusted EBITDA corresponds more closely to the cash operating income generated from our business, from which capital investments are made and debt is serviced. Adjusted EBITDA has certain limitations in that it does not take into account the impact to IAC's statement of operations of certain expenses. Votes per each share of stock Number of Votes for Each Share of Common Stock Represents the number of votes the holder of each share of common stock is entitled to. Outstanding borrowings Long-Term Line of Credit Level 1 Fair Value, Inputs, Level 1 [Member] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Diluted earnings (loss) per share (USD per share) Earnings (loss) per share attributable to Angi Inc. Class A and Class B Common Stock shareholders, Diluted (USD per share) Earnings Per Share, Diluted Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Treasury stock (in shares) Treasury Stock, Common, Shares Consolidation Items [Domain] Consolidation Items [Domain] Loss from discontinued operations, net of tax Loss from discontinued operations, net of tax Loss from discontinued operations, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Auditor Location Auditor Location Royalty Rate Measurement Input, Royalty Rate [Member] Measurement Input, Royalty Rate [Member] Gross Profit Gross Profit Capitalized commissions amortized from prior periods Amortization of Deferred Sales Commissions Domestic Tax Jurisdiction Domestic Tax Jurisdiction [Member] Other Stockholders' Equity, Other Less: Interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Income taxes paid (net of refunds) Income Taxes Paid, Net MSUs Market-Based Stock Units [Member] Market-Based Stock Units [Member] Total long-term debt Long-Term Debt, Gross Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Accrued employee compensation and benefits Employee-related Liabilities, Current Capitalized software and computer equipment Capitalized software and computer equipment Computer Equipment and Capitalized Software [Member] Represents the information pertaining to computer equipment and capitalized software. Total Lessee, Operating Lease, Liability, to be Paid Subsidiaries Subsidiaries [Member] Trade names Trade Names [Member] Intersegment Eliminations Intersegment Eliminations [Member] Expiration Date Trading Arrangement Expiration Date Tax Sharing Agreement Tax Sharing Agreement [Member] Tax Sharing Agreement [Member] Related party transactions Related Party Transaction, Amounts of Transaction SHAREHOLDERS’ EQUITY: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Capitalized software, leasehold improvements and equipment, net Long-lived assets (excluding goodwill and intangible assets) Capitalized software, leasehold improvements and equipment, net Property, Plant and Equipment, Net Restructuring Restructuring Restructuring Charges Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Accounts receivable Increase (Decrease) in Accounts Receivable Restructuring Cost [Table] Restructuring Cost [Table] Entity Current Reporting Status Entity Current Reporting Status Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] US Federal Statutory Tax Rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Executive Category: Executive Category [Axis] SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] State and Local Income Taxes Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Components of comprehensive income attributable to noncontrolling interests: Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract] Current Fiscal Year End Date Current Fiscal Year End Date Technology Technology-Based Intangible Assets [Member] Expected term Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Services Agreement Service Agreements [Member] Number of active stock-based compensation plans Share Based Compensation Arrangement by Share Based Payment Award Number of Active Plans Represents the number of active equity-based compensation plans pursuant to which incentive awards are granted to employees, officers, directors and consultants. 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excluded from calculation of diluted earnings per share (shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Leases not yet commenced Unrecorded Unconditional Purchase Obligation Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Stock Options and RSUs Stock Options And Restricted Stock Units (RSUs) [Member] Stock Options And Restricted Stock Units (RSUs) LEASES Lessee, Operating Leases [Text Block] Net cash used in financing activities attributable to continuing operations Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Measure: Measure [Axis] Sublease Agreement Sublease Agreement [Member] Sublease Agreement [Member] Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Forgone Recovery due to 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[Flag] Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Common Stock Common Stock [Member] Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Net (decrease) increase in cash and cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Dilutive securities (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Statistical Measurement [Domain] Statistical Measurement [Domain] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Operating lease, liability, current, balance sheet location [Extensible List] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Restricted cash included in other current assets Restricted Cash, Current Foreign Plan Foreign Plan [Member] Related Party Transaction [Axis] Related Party Transaction [Axis] Debt Issuance Costs Debt, Policy [Policy Text Block] Leases [Abstract] Earnings (loss) per share: Earnings Per Share, Basic [Abstract] Additions for tax positions of prior years Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Other current assets Capitalized sales commissions Contract with Customer, Asset, after Allowance for Credit Loss, Current Schedule of Discontinued Operations Disposal Groups, Including Discontinued Operations [Table Text Block] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Basic earnings (loss) per share (USD per share) Earnings (loss) per share attributable to Angi Inc. Class A and Class B Common Stock shareholders, Basic (USD per share) Earnings Per Share, Basic Accounts payable and other liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Common stock reserved (in shares) Common Stock, Capital Shares Reserved for Future Issuance Lead revenue Lead [Member] Lead Depreciation Disposal Group, Including Discontinued Operation, Depreciation Disposal Group, Including Discontinued Operation, Depreciation Changes in Unrecognized Tax Benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Percent Total deferred tax assets Deferred Tax Assets, Gross Income tax benefit (detriment) related to share-based payment arrangement Share-Based Payment Arrangement, Exercise of Option, Tax Benefit Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Discount Rate Measurement Input, Discount Rate [Member] Loss per share from discontinued operations, net of tax, Diluted (USD per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share Schedule of Segment Reporting Information Schedule of Segment Reporting Information, by Segment [Table Text Block] Measurement Input Type [Domain] Measurement Input Type [Domain] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Stock-based compensation expense Stock-based compensation expense Share-Based Payment Arrangement, Expense Goodwill and Intangible Assets Disclosure [Abstract] TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity Foreign Currency Translation and Transaction Gains and Losses Foreign Currency Transactions and Translations Policy [Policy Text Block] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Cash and cash equivalents and restricted cash at beginning of period Cash and cash equivalents and restricted cash at end of period Total cash and cash equivalents, and restricted cash as shown on the statement of cash flows Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Other Deferred Tax Assets, Other General and administrative expense General and administrative expense General and Administrative Expense [Member] Per share information from continuing operations: Income (Loss) From Continuing Operations, Per Share [Abstract] Income (Loss) From Continuing Operations, Per Share Capital expenditures Segment, Expenditure, Addition to Long-Lived Assets Accounting Policies [Abstract] Schedule of Maturities of Operating Lease Liabilities Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Schedule of Capital Expenditures by Segment Schedule of Capital Expenditures by Segment [Table Text Block] Schedule of Capital Expenditures by Segment [Table Text Block] Treasury Stock Treasury Stock, Common [Member] Net earnings (loss) from continuing operations Net earnings (loss) attributable to continuing operations Net earnings (loss) from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Fair value of RSU's that vested during the period Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Pay vs Performance Disclosure [Line Items] Fixed expense Fixed Expense Fixed Expense Total lease liabilities Present value of lease liabilities Operating Lease, Liability Exercisable, weighted average exercise price at end of period (USD per share) Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option and Option Equity Instruments, Exercisable, Weighted Average Exercise Price Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option and Option Equity Instruments, Exercisable, Weighted Average Exercise Price LIABILITIES: Liabilities: Liabilities [Abstract] Tax credit carryforwards not subject to expiration Tax Credit Carryforwards Not Subject to Expiration Tax Credit Carryforwards Not Subject to Expiration 3.875% Senior Notes 3.875% Senior Notes [Member] 3.875% Senior Notes Other long-term liabilities Other Liabilities, Noncurrent Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount 2028 Lessee, Operating Lease, Liability, to be Paid, Year Three Comprehensive income (loss) attributable to Angi Inc. shareholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Measurement Input Type [Axis] Measurement Input Type [Axis] Disposal Group Name [Domain] Disposal Group Name [Domain] Name Measure Name Schedule of Income Before Income Taxes Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] Class of Stock [Line Items] Class of Stock [Line Items] Deferred income taxes Deferred Income Tax 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Share-based Payment Award, Equity Instruments Other than Options and Options, Outstanding, Weighted Average Remaining Contractual Terms Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding ROU assets obtained in exchange for lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Level 2 Fair Value, Inputs, Level 2 [Member] Document Financial Statement Error Correction [Flag] Document Financial Statement Error Correction [Flag] State and Local Income Taxes Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Related Party Related Party [Member] Charges to Other Accounts SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Other Account Schedule of Components of Income Tax Expense (Benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Capitalized Software, Leasehold Improvements and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Document Information [Table] Document Information [Table] PEO PEO [Member] Intangible assets, net Deferred Tax Liabilities, Intangible Assets United States UNITED STATES Changes in assets and liabilities, net of effects of dispositions: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Adjustment pursuant to the tax sharing agreement with IAC as part of the Distribution Adjustments To Additional Paid In Capital, Tax Sharing Agreement From Distribution Adjustments To Additional Paid In Capital, Tax Sharing Agreement From Distribution Valuation Allowances Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Capitalized software, leasehold improvements and equipment, net Deferred Tax Liabilities, Property, Plant and Equipment Expected volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Accumulated Deficit Retained Earnings [Member] Income Tax Jurisdiction [Axis] Income Tax Jurisdiction [Axis] Schedule of Accrued Expenses and Other Current Liabilities Schedule of Accrued Liabilities [Table Text Block] Share-Based Payment Arrangement [Abstract] Income Statement [Abstract] Income Statement [Abstract] Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Product and Service [Domain] Product and Service [Domain] Stock Options and Stock Appreciation Rights Stock Options and Stock Appreciation Rights [Member] Stock Options and Stock Appreciation Rights Assumed withholding rate (as a percent) Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Withholding Rate Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Withholding Rate Diluted earnings (loss) per share (USD per share) Earnings (loss) per share from continuing operations, Diluted (USD per share) Income (Loss) from Continuing Operations, Per Diluted Share Total Shareholders’ Equity Parent [Member] Net earnings (loss) Net earnings (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options and Options, Additional Disclosures [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options and Options, Additional Disclosures Cash equivalents maturity period at purchase (less than) Cash Equivalents Maturity Period at Purchase Less Than Short-term investments must have a maturity, at the date of purchase, of less than this specified period in order to be classified as cash equivalents. 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Schedule, 12-09, Valuation Allowances and Reserves [Domain] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] Related Party Transactions [Abstract] Related Party Transactions [Abstract] Effective Income Tax Rate Reconciliation [Line Items] Effective Income Tax Rate Reconciliation [Line Items] Net lease expense Lease, Cost Cost of revenue Cost of Sales [Member] Goodwill Balance at beginning of period Balance at end of period Goodwill Schedule of Lease Cost and Other Information Lease, Cost [Table Text Block] Federal Deferred Federal Income Tax Expense (Benefit) All other countries Non-US [Member] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns Unrecognized Tax Benefits [Roll Forward] Auditor Name Auditor Name Cash remitted in stock issuance assuming conversion Stock-based compensation Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-Based Payment Arrangement, Amount Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Other Performance Measure, Amount Other Performance Measure, Amount Schedule of Restricted Cash Restrictions on Cash and Cash Equivalents [Table Text Block] Debt issuance costs Payments of Debt Issuance Costs Investment in Marketable Debt Securities Marketable Securities, Policy [Policy Text Block] Related and Nonrelated Parties [Domain] Related and Nonrelated Parties [Domain] Amount Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Number of service categories (more than) Number of Service Categories Number of Service Categories Shares Share-based Compensation Arrangement by Share-based Payment Award, Non-Option and Option Equity Instruments, Outstanding [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Non-Option and Option Equity Instruments, Outstanding Income tax refunds Proceeds from Income Tax Refunds Vesting [Axis] Vesting [Axis] Fair Value Measurements Fair Value of Financial Instruments, Policy [Policy Text Block] Other current assets Other current assets Other Assets, Current Additional paid-in capital Additional Paid in Capital, Common Stock Cash (paid) received during the year for: Cash Paid (Received) [Abstract] Cash Paid (Received) [Abstract] Stock Options and Subsidiary Denominated Equity and Vesting of Restricted Common Stock, Restricted Stock Units (RSUs) Stock Options and Subsidiary Denominated Equity and Vesting of Restricted Common Stock, Restricted Stock Units (RSU's) [Member] Stock Options, Warrants, and Subsidiary Denominated Equity Exchange of Exchangeable Notes and Vesting of RSUs [Member] 2020 Share Authorization 2020 Share Authorization [Member] 2020 Share Authorization Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Interest income Disposal Group, Including Discontinued Operation, Interest Income Interest expense—third-party Interest Paid, Excluding Capitalized Interest, Operating Activity Document Fiscal Year Focus Document Fiscal Year Focus Basis of Presentation and Consolidation Basis of Accounting, Policy [Policy Text Block] ROU assets Operating Lease, Right-of-Use Asset Total Tax Expense (Benefit) Effective Income Tax Rate Reconciliation, Percent Number of domestic service professionals (over) Number of Service Professionals Number of Service Professionals Reductions for tax positions of prior years Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Fixed lease expense Operating Lease, Cost Weighted average period over which cost is expected to be recognized (in years) Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Deferred tax assets, valuation allowance Less valuation allowance Deferred Tax Assets, Valuation Allowance Equity [Abstract] Equity [Abstract] Goodwill and Indefinite-Lived Intangible Assets Goodwill and Intangible Assets, Policy [Policy Text Block] Total cash (used in) provided by continuing operations Cash Provided by (Used in) Continuing Operation SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Schedule of Goodwill [Table] Goodwill [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Federal Current Federal Tax Expense (Benefit) Increase (Decrease) in Shareholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Retirement Plan Sponsor Location [Axis] Retirement Plan Sponsor Location [Axis] Intangible assets with definite lives Finite-Lived Intangible Assets [Line Items] Reduction in number of employees Restructuring and Related Cost, Expected Number of Positions Eliminated Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Comprehensive Income (Loss) Note [Text Block] Cost of revenue (exclusive of depreciation shown separately below) Disposal Group, Including Discontinued Operation, Costs of Goods Sold Stock authorized for repurchase (in shares) Share Repurchase Program, Authorized, Number of Shares Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Amortization of intangibles Amortization of intangibles Amortization of Intangible Assets Deferred income taxes Deferred Income Tax Assets, Net Shares repurchased during period, value Stock Repurchased During Period, Value Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] May 2025 Share Authorization May 2025 Share Authorization [Member] May 2025 Share Authorization Revolving Credit Facility Revolving Credit Facility [Member] Foreign tax effects Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Advertising revenue Advertising [Member] Arrangement Duration Trading Arrangement Duration Segments [Axis] Segments [Axis] Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Other non-current assets Contract with Customer, Asset, after Allowance for Credit Loss, Noncurrent STOCK-BASED COMPENSATION Share-Based Payment Arrangement [Text Block] Expected restructuring charges Restructuring and Related Cost, Expected Cost ASSETS Assets: Assets [Abstract] Credit Facility [Axis] Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Debt Instrument, Redemption [Line Items] Debt Instrument, 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Net cash provided by operating activities attributable to continuing operations Cash Provided by (Used in) Operating Activity, Continuing Operation Services revenue Service [Member] Schedule of Intangible Assets with Definite Lives Schedule of Finite-Lived Intangible Assets [Table Text Block] Restatement Determination Date: Restatement Determination Date [Axis] Issuance of common stock pursuant to stock-based awards, net of withholding taxes Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Foreign Deferred Foreign Income Tax Expense (Benefit) Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Net cash used in investing activities attributable to continuing operations Cash Provided by (Used in) Investing Activity, Continuing Operation Other, net Proceeds from (Payment for) Other Financing Activity Enactment of New Tax Laws Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount Name Trading Arrangement, Individual Name Purchase of noncontrolling interests Net decrease to additional paid in capital related to purchase of noncontrolling interest Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Number of installments Share-based Compensation Arrangement by Share-based Payment Award, Number of Installments Share-based Compensation Arrangement by Share-based Payment Award, Number of Installments Capitalized software, leasehold improvements and equipment, net Deferred Tax Assets, Property, Plant and Equipment Exercisable, number exercisable at end of period (in shares) Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option and Option Equity Instruments, Exercisable, Number Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option and Option Equity Instruments, Exercisable, Number Share Repurchase Program [Axis] Share Repurchase Program [Axis] Income tax provision Discontinued Operation, Tax Effect of Discontinued Operation Name Awards Close in Time to MNPI Disclosures, Individual Name Restricted cash included in other non-current assets Restricted Cash, Noncurrent Balance at beginning of the period (USD per share) Balance at end of the period (USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Employer contribution limit per calendar year (as a percent of compensation) Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay Weighted Average Remaining Contractual Life (In Years) Share-based Payment Arrangement, Equity Instruments Other than Options and Options, Exercise Price Range, Outstanding and Exercisable, Weighted Average Remaining Contractual Term Share-based Payment Arrangement, Equity Instruments Other than Options and Options, Exercise Price Range, Outstanding and Exercisable, Weighted Average Remaining Contractual Term Cash equivalents Cash Equivalents, at Carrying Value Conversion of shares Stock Issued During Period, Value, Conversion of Convertible Securities Stock-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Treasury stock, 14,220 and 3,716 shares, respectively Treasury Stock, Value Outstanding, beginning balance (in shares) Outstanding, ending balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option and Option Equity Instruments, Outstanding, Number Share-based Compensation Arrangement by Share-based Payment Award, Non-Option and Option Equity Instruments, Outstanding, Number Defined Contribution Plan Disclosure Defined Contribution 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and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Total stock-based compensation expense Share-Based Payment Arrangement, Expensed and Capitalized, Amount Common stock, value Common Stock, Value, Issued Title and Position [Axis] Title and Position [Axis] Exercisable, aggregate intrinsic value at end of period Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option and Option Equity Instruments, Exercisable, Aggregate Intrinsic Value Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option and Option Equity Instruments, Exercisable, Aggregate Intrinsic Value Commitments and contingencies Commitments and Contingencies Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Schedule of Revenue by Geographic Areas Revenue from External Customers by Geographic Areas [Table Text Block] Noncontrolling Interests Noncontrolling Interest [Member] Other comprehensive (loss) income Other Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Nonredeemable Noncontrolling Interest, Total Other Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Nonredeemable Noncontrolling Interest, Total Outstanding, number (in shares) Share-based Payment Arrangement, Equity Instruments Other than Options and Options, Exercise Price Range, Shares Outstanding Share-based Payment Arrangement, Equity Instruments Other than Options and Options, Exercise Price Range, Shares Outstanding Delaware DELAWARE Noncontrolling Interest [Table] Noncontrolling Interest [Table] Net deferred tax assets Deferred Tax Assets, Net Schedule of Long-lived Assets by Geographic Areas Long-Lived Assets by Geographic Areas [Table Text Block] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] Schedule of Reconciliation of Unrecognized Tax Benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Variable expense Variable Expense Variable Expense Domestic Plan Domestic Plan [Member] Schedule of Information for Stock Options and Stock Appreciation Rights Outstanding and Exercisable Share-based Payment Arrangement, Stock Options and Stock Appreciation Rights, Exercise Price Range [Table Text Block] Share-based Payment Arrangement, Stock Options and Stock Appreciation Rights, Exercise Price Range All Individuals All Individuals [Member] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Capital expenditures Payments to Acquire Property, Plant, and Equipment General and administrative expense Disposal Group, Including Discontinued Operation, General and Administrative Expense Name Forgone Recovery, Individual Name Operating loss carryforwards available to 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Finite-Lived Intangible Assets by Major Class [Table] Intangible Asset, Finite-Lived [Table] Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option and Option Equity Instruments, Granted Share-based Compensation Arrangement by Share-based Payment Award, Non-Option and Option Equity Instruments, Granted Tax benefit or provision on accumulated other comprehensive income (loss) AOCI Tax, Attributable to Parent Geographical [Axis] Geographical [Axis] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Tax credit carryforwards Deferred Tax Assets, Tax Credit Carryforwards VALUATION AND QUALIFYING ACCOUNTS SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Title of 12(b) Security Title of 12(b) Security Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Amortization of contract assets Capitalized Contract Cost, Amortization Long-Lived Assets Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block] Earnings Per Share [Abstract] Earnings Per Share [Abstract] Earnings Per Share [Abstract] 2030 Lessee, Operating Lease, Liability, to be Paid, Year Five Other income, net Other income, net Nonoperating Income (Expense) Expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option and Option Equity Instruments, Expirations Share-based Compensation Arrangement by Share-based Payment Award, Non-Option and Option Equity Instruments, Expirations Tax credit carryforwards Tax Credit Carryforward, Amount Deferred revenue Increase (Decrease) in Contract with Customer, Liability Greater than $20.00 Exercise Price Range One [Member] This element represents the range of exercise prices of stock options from $10.01 to $20.00. Shares forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Forfeitures Schedule of Reconciliation of Adjusted EBITDA to Operating Income (Loss) Schedule of Reconciliation of Adjusted EBITDA to Operating Income [Table Text Block] Tabular disclosure of the reconciliation of Adjusted EBITDA to operating income [Table Text Block] Award Timing Disclosures [Line Items] Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option and Option Equity Instruments, Forfeitures Share-based Compensation Arrangement by Share-based Payment Award, Non-Option and Option Equity Instruments, Forfeitures Recoveries collected Accounts Receivable, Allowance for Credit Loss, Recovery SHAREHOLDERS' EQUITY Equity [Text Block] State Deferred State and Local Income Tax Expense (Benefit) Membership subscription revenue Membership Subscription [Member] Membership Subscription Projects in progress Construction in Progress [Member] Other Other Accrued Liabilities, Current Schedule of Effective Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Accounts Receivable, Allowance for Credit Loss [Roll Forward] Accounts Receivable, Allowance for Credit Loss [Roll Forward] MSUs and PSUs Market-based Stock Units (MSUs) and Performance-based Stock Units (PSUs) [Member] Market-based Stock Units (MSUs) and Performance-based Stock Units (PSUs) Vesting period (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Other Adjustments Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Furniture and other equipment Furniture and other equipment Furniture and Other Equipment [Member] Represents the information pertaining to furniture and other equipment. Deductions SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Adoption Date Trading Arrangement Adoption Date Base Rate Base Rate [Member] Professional relationships Customer Relationships [Member] Operating income (loss) Operating Income (Loss) Line of Credit Line of Credit [Member] Accumulated deficit Retained Earnings (Accumulated Deficit) Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Indefinite-lived intangible assets of impairment charge Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill) Reporting unit, amount of fair value that exceeded carrying value Reporting Unit, Amount of Fair Value in Excess of Carrying Amount Class of Stock [Axis] Class of Stock [Axis] Employee contribution limit per calendar year (as a percent of pre-tax earnings) Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Subsequent Event Type [Domain] Subsequent Event Type [Domain] 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] Accrued expenses and other current liabilities Payables and Accruals [Abstract] Other Other Nonoperating Income (Expense) Statement [Table] Statement [Table] Effect of exchange rate changes on cash and cash equivalents and restricted cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Deferred income taxes Deferred income tax benefit Deferred Income Tax Expense (Benefit) Adjustments to reconcile net earnings to net cash provided by operating activities attributable to continuing operations: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Expirations of statutes Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Cash flows from financing activities attributable to continuing operations: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Nontaxable or Nondeductible Items Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent Other Foreign Jurisdictions Foreign Tax Jurisdiction, Other [Member] Balance at beginning of period (in shares) Balance at end of period (in shares) Shares, Issued Variable Rate [Domain] Variable Rate [Domain] All Adjustments to Compensation All Adjustments to Compensation [Member] Amendment Flag Amendment Flag Tax benefit recognized related to stock-based compensation Share-Based Payment Arrangement, Expense, Tax Benefit Termination Date Trading Arrangement Termination Date Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Share-Based Payment Arrangement, Tranche Three Share-Based Payment Arrangement, Tranche Three [Member] Discount rate (percent) Operating Lease, Weighted Average Discount Rate, Percent Unrecognized tax (benefit), accruals for interest and penalties Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Weighted average basic Class A and Class B common stock shares outstanding, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Schedule of Computation of Basic and Diluted (Loss) Earnings per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Related Party Transaction [Domain] Related Party Transaction [Domain] Exercise Price Range [Domain] Exercise Price Range [Domain] Segment Reporting [Abstract] Segment Reporting [Abstract] Cost of revenue (exclusive of depreciation shown separately below) Cost of revenue Cost of Revenue Debt Disclosure [Abstract] Debt Disclosure [Abstract] Schedule of Outstanding Unvested Equity Units Schedule of Unvested Restricted Stock Units Roll Forward [Table Text Block] Operating costs and expenses: Costs and Expenses [Abstract] Write-offs charged against the allowance for credit loss Accounts Receivable, Allowance for Credit Loss, Writeoff Issuance of common stock to IAC pursuant to the employee matters agreement Stock Issued During Period, Value, Related Party Agreement Stock Issued During Period, Value, Related Party Agreement Restructuring and Related Activities [Abstract] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-based Compensation Arrangement by Share-based Payment Award Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common stock, par value (USD per share) Common Stock, Par or Stated Value Per Share Effect of Cross Border Tax Laws Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Amount Accounting Estimates Use of Estimates, Policy [Policy Text Block] Deferred tax valuation allowance SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member] Change in foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Insider Trading Arrangements [Line Items] Adjustment pursuant to the tax sharing agreement with IAC post-distribution Adjustments To Additional Paid In Capital, Tax Sharing Agreement Post-Distribution Adjustments To Additional Paid In Capital, Tax Sharing Agreement Post-Distribution Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Additions based on tax positions related to the current year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Proceeds from maturities of marketable debt securities Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] International International Segment [Member] International Segment Consolidation Items [Axis] Consolidation Items [Axis] Variable Rate [Axis] Variable Rate [Axis] Deferred tax liabilities: Components of Deferred Tax Liabilities [Abstract] Net (loss) earnings Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member]