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[Member] Zillow, Inc. 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Twenty-Two Inducement Plan Liabilities Liabilities [Abstract] PROPERTY AND EQUIPMENT – Net Property and equipment – net Property, Plant and Equipment, Net Cash and Cash Equivalents [Abstract] Pro.com Services Labs, Inc. [Member] Services Labs, Inc. 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Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Total current assets Assets, Current Payments for legal settlement Payments for Legal Settlements Business Acquisition [Line Items] Business Acquisition [Line Items] Entity Small Business Entity Small Business Measurement Basis [Axis] Measurement Basis [Axis] Measurement Frequency [Domain] Measurement Frequency [Domain] SHAREHOLDERS’ EQUITY WARRANTS Stockholders' Equity Note Disclosure [Text Block] Amortization of right of use asset Operating Lease, Right-of-Use Asset, Amortization Expense Net Carrying Amount Finite-Lived Intangible Assets, Net Restricted cash Restricted Cash Unamortized stock-based compensation Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Number of Options (in thousands) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] PROPERTY AND EQUIPMENT Property, Plant and Equipment Disclosure [Text Block] Number of homes under contract to be purchased Recorded Unconditional Purchase Obligation, Minimum Quantity Required Aggregate intrinsic values Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset [Domain] Title of 12(b) Security Title of 12(b) Security Debt securities, available-for-sale, marketable securities Debt Securities, Available-for-sale, Marketable Securities Debt Securities, Available-for-sale, Marketable Securities Consolidated Entities [Axis] Consolidated Entities [Axis] Subsequent Event [Line Items] Subsequent Event [Line Items] Debt Instrument [Line Items] Debt Instrument [Line Items] Business Combination and Asset Acquisition [Abstract] Asset Pledged as Collateral with Right Asset Pledged as Collateral with Right [Member] Class of Warrant or Right [Table] Class of Warrant or Right [Table] Public Offering And Over-Allotment Option Public Offering And Over-Allotment Option [Member] Public Offering And Over-Allotment Option Class of Stock [Line Items] Class of Stock [Line Items] Unrealized Losses, Less than 12 Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Stock-Based Compensation Share-Based Payment Arrangement [Policy Text Block] Employee payroll contributions with held Share-based Compensation Arrangement by Share-based Payment Award, Employee Payroll Contributions With Held Share-based Compensation Arrangement by Share-based Payment Award, Employee Payroll Contributions With Held 2024 Finite-Lived Intangible Asset, Expected Amortization, Year Two Unrealized Losses 12 Months or Greater Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Term Debt Facility 2021-S2 Term Debt Facility 2021-S2 [Member] Term Debt Facility 2021-S2 LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity [Abstract] Estimate of Fair Value Measurement Estimate of Fair Value Measurement [Member] Granted (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Cost Basis Debt Securities, Available-for-Sale, Amortized Cost Purchase of intangible assets Payments to Acquire Intangible Assets Amount awarded to other party Litigation Settlement, Amount Awarded to Other Party CASH, CASH EQUIVALENTS, AND INVESTMENTS Cash, Cash Equivalents, and Marketable Securities [Text Block] Net proceeds from offering Sale of Stock, Consideration Received on Transaction Other assets Increase (Decrease) in Other Operating Assets Scheduled Contractual Maturities of Marketable Securities Investments Classified by Contractual Maturity Date [Table Text Block] Incentive Stock Options Incentive Stock Options [Member] Incentive Stock Options Entity Filer Category Entity Filer Category Proceeds from the February 2021 Offering Proceeds from Issuance of Common Stock Basic (in shares) Weighted average shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Cash and Cash Equivalents Marketable Securities, Cash And Cash Equivalents Marketable Securities, Cash And Cash Equivalents Schedule of Variable Interest Entities Schedule of Variable Interest Entities [Table Text Block] Share-based compensation expense Stock-based compensation expense Share-Based Payment Arrangement, Expense DISCLOSURES OF NONCASH ACTIVITIES: Noncash Investing and Financing Items [Abstract] COMMITMENTS AND CONTINGENCIES (See Note 16) Commitments and Contingencies Security Exchange Name Security Exchange Name Beginning balance (in dollars per share) Ending balance (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Schedule of Non- Marketable Equity Securities and Equity Method Investment Marketable Securities And Equity Securities Without Readily Determinable Fair Value [Table Text Block] Marketable Securities And Equity Securities Without Readily Determinable Fair Value Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Issuance of common stock in extinguishment of warrant liabilities Stock Issued Interest payable Increase (Decrease) in Interest Payable, Net Restricted Shares Restricted Stock [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] General and administrative General and Administrative Expense [Member] REVENUE Revenue from Contract with Customer, Excluding Assessed Tax Common stock issued upon exercise of warrants (in shares) Stock Issued During Period, Shares, Conversion of Convertible Securities Common stock reserved for issuance (in shares) Common Stock, Capital Shares Reserved for Future Issuance Term Debt Facility 2022-S2 Term Debt Facility 2022-S2 [Member] Term Debt Facility 2022-S2 Cover [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Level 3 Fair Value, Inputs, Level 3 [Member] Shareholder ownership percentage threshold, extended exercisable term Shareholder Ownership Percentage Threshold, Extended Exercisable Term Shareholder Ownership Percentage Threshold, Extended Exercisable Term Goodwill, impairment loss Goodwill, Impairment Loss SHARE-BASED AWARDS Share-Based Payment Arrangement [Text Block] Other Other Assets Debt securities, available-for-sale, cash and cash equivalents Debt Securities, Available-for-sale, Cash And Cash Equivalents Debt Securities, Available-for-sale, Cash And Cash Equivalents Call Option Call Option [Member] Unvested Stock Options and Restricted Shares Unvested Stock Options and Restricted Shares [Member] Unvested Stock Options and Restricted Shares Forecast Forecast [Member] Risk-free rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity Term Debt Instrument, Term Warrants exercised (in shares) Class Of Warrant Or Right, Exercised Class Of Warrant Or Right, Exercised Related Party [Axis] Related Party [Axis] Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Principal payments on non-recourse asset-backed debt Repayments of Long-Term Lines of Credit Revolving Facility 2019-1 Revolving Facility 2019-1 [Member] Revolving Facility 2019-1 Organization, Consolidation and Presentation of Financial Statements [Abstract] Acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Cash consideration paid out after closing Business Combination Consideration Transferred Deferred Payment Amount Business Combination Consideration Transferred Deferred Payment Amount Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Level 2 Fair Value, Inputs, Level 2 [Member] Current Fiscal Year End Date Current Fiscal Year End Date Valuation adjustments Inventory, Real Estate, Valuation Adjustment (Decrease) Increase) Inventory, Real Estate, Valuation Adjustment (Decrease) Increase) Marketable securities Marketable Securities, Current Net loss attributable to common shareholders – diluted Net Income (Loss) Available to Common Stockholders, Diluted Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Diluted (in dollars per share) Diluted net loss per share (in dollars per share) Earnings Per Share, Diluted INTANGIBLES – Net Intangible Assets, Net (Excluding Goodwill) Sale of Stock [Domain] Sale of Stock [Domain] Mortgage loans held for sale pledged under agreements to repurchase Mortgage Loans Held For Sale Pledged Under Agreements To Repurchase [Member] Mortgage Loans Held For Sale Pledged Under Agreements To Repurchase Term Debt Facility 2022-M1 Term Debt Facility 2022-M1 [Member] Term Debt Facility 2022-M1 Vesting period (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Issuance cost of common stock Payments of Stock Issuance Costs Stock-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition WARRANT FAIR VALUE ADJUSTMENT Warrant fair value adjustment Fair Value Adjustment of Warrants Total current liabilities Liabilities, Current Other current assets ($1 and $4 carried at fair value) Other current assets Other Assets, Current Total Equity Securities, FV-NI and without Readily Determinable Fair Value Equity securities Equity Securities [Member] Summary of the RSU Activity Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Revolving Facility 2019-2 Revolving Facility 2019-2 [Member] Revolving Facility 2019-2 Expiration period (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Corporate debt securities Corporate Debt Securities [Member] Recognized unrealized gain (loss) related to equity securities still held Equity Securities, FV-NI, Unrealized Gain (Loss) Entity Address, Address Line Two Entity Address, Address Line Two Entity Address, Address Line One Entity Address, Address Line One COST OF REVENUE Cost of Revenue Purchases of Capped Calls related to the 2026 Notes Adjustments To Additional Paid In Capital, Purchase Of Options Indexed To Issuers' Equity Adjustments To Additional Paid In Capital, Purchase Of Options Indexed To Issuers' Equity Stock-based compensation expense capitalized for internally developed software Share-Based Payment Arrangement, Amount Capitalized Over-Allotment Option Over-Allotment Option [Member] Vesting period for awards with service condition (in years) Share Based Compensation Arrangement By Share Based Payment Award Awards With Service Condition Award Vesting Period Share Based Compensation Arrangement By Share Based Payment Award Awards With Service Condition Award Vesting Period Fair Value Disclosures [Abstract] INTEREST EXPENSE Interest Expense Credit Facility [Axis] Credit Facility [Axis] Unrealized loss on marketable securities OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Changes in fair value of equity securities Marketable Securities, Unrealized Gain (Loss) Revolving Facility 2019-3 Revolving Facility 2019-3 [Member] Revolving Facility 2019-3 REAL ESTATE INVENTORY Inventory Disclosure [Text Block] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Schedule of Long-term Debt Instruments Schedule of Long-Term Debt Instruments [Table Text Block] SHAREHOLDERS’ EQUITY: Equity [Abstract] Subsequent Event [Table] Subsequent Event [Table] Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Inventory Disclosure [Abstract] Entity Tax Identification Number Entity Tax Identification Number Common stock discount on 1000 shares per employee Share-Based Compensation Arrangement by Share-Based Payment Award, Discount from Market Price, Purchase Date Outstanding amount, noncurrent Long-Term Debt, Gross, Noncurrent Long-Term Debt, Gross, Noncurrent Proceeds from sale of non-marketable equity securities Proceeds from Sale of Equity Securities, FV-NI Purchase of non-marketable equity securities Payments to Acquire Equity Securities, FV-NI Remainder of 2022 Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year Cash Cash [Member] Consolidated Entities [Domain] Consolidated Entities [Domain] Asset-backed Mezzanine Term Debt Facilities Mezzanine Term Debt Facilities [Member] Mezzanine Term Debt Facilities Volume-weighted average price, days Class Of Warrant Or Right, Exercise Price, Volume-weighted Average Price, Days Class Of Warrant Or Right, Exercise Price, Volume-weighted Average Price, Days NET INCREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Commercial paper Commercial Paper [Member] Mutual fund, cash and cash equivalents Other Short-term Investments, Cash And Cash Equivalents Other Short-term Investments, Cash And Cash Equivalents Entity Central Index Key Entity Central Index Key Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Principal payments on other secured borrowings Repayments of Secured Debt Measurement Frequency [Axis] Measurement Frequency [Axis] Weighted- Average Grant-Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Repo Facility 2019-R1 Repo Facility 2019-R1 [Member] Repo Facility 2019-R1 Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Fully committed borrowing capacity, maximum Line Of Credit Facility, Fully Committed Maximum Borrowing Capacity Line Of Credit Facility, Fully Committed Maximum Borrowing Capacity Total consideration transferred Business Combination, Consideration Transferred Concentrations of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] City Area Code City Area Code General and administrative General and Administrative Expense ASSETS Assets [Abstract] Capped calls cap price (in dollars per share) Option Indexed to Issuer's Equity, Cap Price Option Indexed to Issuer's Equity, Cap Price Issuance costs Debt Issuance Costs, Noncurrent, Net Marketing Warrants Marketing Warrants [Member] Marketing Warrants Capped calls cap price premium Option Indexed to Issuer's Equity, Cap Price Premium Option Indexed to Issuer's Equity, Cap Price Premium Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Proceeds from sale and principal collections of mortgage loans held for sale Proceeds from Sale and Collection of Loans Held-for-sale Statement of Stockholders' Equity [Abstract] Sale of Stock [Axis] Sale of Stock [Axis] Non-recourse asset-backed debt - current portion Line of Credit, Current Fair Value Measurement Methodologies Fair Value Disclosures [Table Text Block] Fair Value Disclosures CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] DESCRIPTION OF BUSINESS AND ACCOUNTING POLICIES Business Description and Accounting Policies [Text Block] Stock-based compensation Share-Based Payment Arrangement, Noncash Expense Warrants to purchase shares (in shares) Class of Warrant or Right, Outstanding Term Debt Facility 2022-S1 Term Debt Facility 2022-S1 [Member] Term Debt Facility 2022-S1 Lease liabilities Increase (Decrease) In Lease Liabilities Increase (Decrease) In Lease Liabilities Purchase of property and equipment Payments to Acquire Property, Plant, and Equipment Technology and development Research and Development Expense [Member] Escrow receivable Escrow Deposit Capped calls cost Option Indexed to Issuer's Equity, Cost Option Indexed to Issuer's Equity, Cost Software implementation costs Software Implementation Costs [Member] Software Implementation Costs Non-Marketable Equity Securities Securities Owned Not Readily Marketable, Policy [Policy Text Block] 2023 Finite-Lived Intangible Asset, Expected Amortization, Year One Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Consideration for purchase of unvested common stock Notes Receivable, Related Parties Fair Value, Option, Quantitative Disclosures [Line Items] Fair Value, Option, Quantitative Disclosures [Line Items] Convertible Debt Convertible Debt [Table Text Block] Reduction in workforce, percent of employees Restructuring and Related Cost, Number of Positions Eliminated, Period Percent