0001001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 1001002 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 1002003 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1003004 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS link:presentationLink link:calculationLink link:definitionLink 1004005 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS link:presentationLink link:calculationLink link:definitionLink 1005006 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN TEMPORARY EQUITY AND SHAREHOLDERS’ EQUITY (DEFICIT) link:presentationLink link:calculationLink link:definitionLink 1006007 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 2101101 - Disclosure - BUSINESS COMBINATIONS link:presentationLink link:calculationLink link:definitionLink 2302301 - Disclosure - BUSINESS COMBINATIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 2403401 - Disclosure - BUSINESS COMBINATIONS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2404402 - Disclosure - BUSINESS COMBINATIONS - Opendoor Labs Inc. (Details) link:presentationLink link:calculationLink link:definitionLink 2405403 - Disclosure - BUSINESS COMBINATIONS - Fair Value of the Consideration Transferred (Details) link:presentationLink link:calculationLink link:definitionLink 2406404 - Disclosure - BUSINESS COMBINATIONS - Pro Forma Adjustments, Revenue and Net Loss (Details) link:presentationLink link:calculationLink link:definitionLink 2107102 - Disclosure - DESCRIPTION OF BUSINESS AND ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 2208201 - Disclosure - DESCRIPTION OF BUSINESS AND ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 2309302 - Disclosure - DESCRIPTION OF BUSINESS AND ACCOUNTING POLICIES (Tables) link:presentationLink link:calculationLink link:definitionLink 2410405 - Disclosure - DESCRIPTION OF BUSINESS AND ACCOUNTING POLICIES - Description of Business (Details) link:presentationLink link:calculationLink link:definitionLink 2411406 - Disclosure - DESCRIPTION OF BUSINESS AND ACCOUNTING POLICIES - Reclassifications (Details) link:presentationLink link:calculationLink link:definitionLink 2412407 - Disclosure - DESCRIPTION OF BUSINESS AND ACCOUNTING POLICIES - Marketable Securities (Details) link:presentationLink link:calculationLink link:definitionLink 2413408 - Disclosure - DESCRIPTION OF BUSINESS AND ACCOUNTING POLICIES - Property, Plant and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 2414409 - Disclosure - DESCRIPTION OF BUSINESS AND ACCOUNTING POLICIES - Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 2415410 - Disclosure - DESCRIPTION OF BUSINESS AND ACCOUNTING POLICIES - Impairment of Long-Lived Assets (Details) link:presentationLink link:calculationLink link:definitionLink 2416411 - Disclosure - DESCRIPTION OF BUSINESS AND ACCOUNTING POLICIES - Revenue Recognition (Details) link:presentationLink link:calculationLink link:definitionLink 2417412 - Disclosure - DESCRIPTION OF BUSINESS AND ACCOUNTING POLICIES - Sales, Marketing and Operations Expense (Details) link:presentationLink link:calculationLink link:definitionLink 2118103 - Disclosure - REAL ESTATE INVENTORY link:presentationLink link:calculationLink link:definitionLink 2319303 - Disclosure - REAL ESTATE INVENTORY (Tables) link:presentationLink link:calculationLink link:definitionLink 2420413 - Disclosure - REAL ESTATE INVENTORY (Details) link:presentationLink link:calculationLink link:definitionLink 2121104 - Disclosure - CASH, CASH EQUIVALENTS, AND MARKETABLE SECURITIES link:presentationLink link:calculationLink link:definitionLink 2322304 - Disclosure - CASH, CASH EQUIVALENTS, AND MARKETABLE SECURITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 2423414 - Disclosure - CASH, CASH EQUIVALENTS, AND MARKETABLE SECURITIES - Amortized Cost (Details) link:presentationLink link:calculationLink link:definitionLink 2424415 - Disclosure - CASH, CASH EQUIVALENTS, AND MARKETABLE SECURITIES - Summary of Debt Securities (Details) link:presentationLink link:calculationLink link:definitionLink 2425416 - Disclosure - CASH, CASH EQUIVALENTS, AND MARKETABLE SECURITIES - Contractual Maturities of Debt Securities (Details) link:presentationLink link:calculationLink link:definitionLink 2126105 - Disclosure - DERIVATIVE INSTRUMENTS link:presentationLink link:calculationLink link:definitionLink 2327305 - Disclosure - DERIVATIVE INSTRUMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 2428417 - Disclosure - DERIVATIVE INSTRUMENTS - Notional Amounts and Fair Values of Derivatives (Details) link:presentationLink link:calculationLink link:definitionLink 2429418 - Disclosure - DERIVATIVE INSTRUMENTS - Derivative Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 2130106 - Disclosure - VARIABLE INTEREST ENTITIES link:presentationLink link:calculationLink link:definitionLink 2331306 - Disclosure - VARIABLE INTEREST ENTITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 2432419 - Disclosure - VARIABLE INTEREST ENTITIES (Details) link:presentationLink link:calculationLink link:definitionLink 2133107 - Disclosure - CREDIT FACILITIES AND LONG-TERM DEBT link:presentationLink link:calculationLink link:definitionLink 2334307 - Disclosure - CREDIT FACILITIES AND LONG-TERM DEBT (Tables) link:presentationLink link:calculationLink link:definitionLink 2435420 - Disclosure - CREDIT FACILITIES AND LONG-TERM DEBT - Schedule of Long Term Debt Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 2436421 - Disclosure - CREDIT FACILITIES AND LONG-TERM DEBT - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2437422 - Disclosure - CREDIT FACILITIES AND LONG-TERM DEBT - Schedule of Debt (Details) link:presentationLink link:calculationLink link:definitionLink 2438423 - Disclosure - CREDIT FACILITIES AND LONG-TERM DEBT - Mortgage Financing (Details) link:presentationLink link:calculationLink link:definitionLink 2139108 - Disclosure - FAIR VALUE DISCLOSURES link:presentationLink link:calculationLink link:definitionLink 2340308 - Disclosure - FAIR VALUE DISCLOSURES (Tables) link:presentationLink link:calculationLink link:definitionLink 2441424 - Disclosure - FAIR VALUE DISCLOSURES - Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 2442425 - Disclosure - FAIR VALUE DISCLOSURES - Fair Value Disclosure of Assets and Liabilities Not Measured at Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 2443426 - Disclosure - FAIR VALUE DISCLOSURES - Unobservable Input Reconciliation (Details) link:presentationLink link:calculationLink link:definitionLink 2444427 - Disclosure - FAIR VALUE DISCLOSURES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2145109 - Disclosure - PROPERTY AND EQUIPMENT link:presentationLink link:calculationLink link:definitionLink 2346309 - Disclosure - PROPERTY AND EQUIPMENT (Tables) link:presentationLink link:calculationLink link:definitionLink 2447428 - Disclosure - PROPERTY AND EQUIPMENT (Details) link:presentationLink link:calculationLink link:definitionLink 2148110 - Disclosure - LEASES link:presentationLink link:calculationLink link:definitionLink 2349310 - Disclosure - LEASES (Tables) link:presentationLink link:calculationLink link:definitionLink 2450429 - Disclosure - LEASES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2451430 - Disclosure - LEASES - Maturity of Operating Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2451430 - Disclosure - LEASES - Maturity of Operating Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2152111 - Disclosure - GOODWILL AND INTANGIBLE ASSETS link:presentationLink link:calculationLink link:definitionLink 2353311 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Tables) link:presentationLink link:calculationLink link:definitionLink 2454431 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2455432 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Intangible Assets Subject to Amortization (Details) link:presentationLink link:calculationLink link:definitionLink 2456433 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Expected Amortization of Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 2157112 - Disclosure - ACCOUNTS PAYABLE AND OTHER ACCRUED LIABILITIES link:presentationLink link:calculationLink link:definitionLink 2358312 - Disclosure - ACCOUNTS PAYABLE AND OTHER ACCRUED LIABILITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 2459434 - Disclosure - ACCOUNTS PAYABLE AND OTHER ACCRUED LIABILITIES (Details) link:presentationLink link:calculationLink link:definitionLink 2160113 - Disclosure - SHAREHOLDERS’ EQUITY link:presentationLink link:calculationLink link:definitionLink 2461435 - Disclosure - SHAREHOLDERS’ EQUITY (Details) link:presentationLink link:calculationLink link:definitionLink 2162114 - Disclosure - SHARE-BASED AWARDS link:presentationLink link:calculationLink link:definitionLink 2363313 - Disclosure - SHARE-BASED AWARDS (Tables) link:presentationLink link:calculationLink link:definitionLink 2464436 - Disclosure - SHARE-BASED AWARDS - 2014 Equity Incentive Plan (Details) link:presentationLink link:calculationLink link:definitionLink 2465437 - Disclosure - SHARE-BASED AWARDS - 2020 Equity Incentive Plan (Details) link:presentationLink link:calculationLink link:definitionLink 2466438 - Disclosure - SHARE-BASED AWARDS - Stock Options and RSUs Information (Details) link:presentationLink link:calculationLink link:definitionLink 2467439 - Disclosure - SHARE-BASED AWARDS - Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 2468440 - Disclosure - SHARE-BASED AWARDS - RSU and Restricted Share Activity (Details) link:presentationLink link:calculationLink link:definitionLink 2469441 - Disclosure - SHARE-BASED AWARDS - Restricted Shares (Details) link:presentationLink link:calculationLink link:definitionLink 2470442 - Disclosure - SHARE-BASED AWARDS - Expense and Capitalized (Details) link:presentationLink link:calculationLink link:definitionLink 2471443 - Disclosure - SHARE-BASED AWARDS - Stock-Based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 2472444 - Disclosure - SHARE-BASED AWARDS - Dividend Yield (Details) link:presentationLink link:calculationLink link:definitionLink 2173115 - Disclosure - WARRANTS link:presentationLink link:calculationLink link:definitionLink 2474445 - Disclosure - WARRANTS - Public and Sponsor Warrants (Details) link:presentationLink link:calculationLink link:definitionLink 2475446 - Disclosure - WARRANTS - Warrants to Purchase Series D Preferred Stock (Details) link:presentationLink link:calculationLink link:definitionLink 2476447 - Disclosure - WARRANTS - Commitment to Issue Warrants (Details) link:presentationLink link:calculationLink link:definitionLink 2177116 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 2378314 - Disclosure - INCOME TAXES (Tables) link:presentationLink link:calculationLink link:definitionLink 2479448 - Disclosure - INCOME TAXES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2480449 - Disclosure - INCOME TAXES - Income Tax Expense (Benefit) (Details) link:presentationLink link:calculationLink link:definitionLink 2481450 - Disclosure - INCOME TAXES - Income Tax Reconciliation (Details) link:presentationLink link:calculationLink link:definitionLink 2482451 - Disclosure - INCOME TAXES - Deferred Tax Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2483452 - Disclosure - INCOME TAXES - Unrecognized Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 2184117 - Disclosure - RELATED PARTIES link:presentationLink link:calculationLink link:definitionLink 2485453 - Disclosure - RELATED PARTIES (Details) link:presentationLink link:calculationLink link:definitionLink 2186118 - Disclosure - NET LOSS PER SHARE link:presentationLink link:calculationLink link:definitionLink 2387315 - Disclosure - NET LOSS PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 2488454 - Disclosure - NET LOSS PER SHARE - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2489455 - Disclosure - NET LOSS PER SHARE - Earnings Per Share, Basic and Diluted (Details) link:presentationLink link:calculationLink link:definitionLink 2490456 - Disclosure - NET LOSS PER SHARE - Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 2191119 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 2492457 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details) link:presentationLink link:calculationLink link:definitionLink 2193120 - Disclosure - RESTRUCTURING link:presentationLink link:calculationLink link:definitionLink 2494458 - Disclosure - RESTRUCTURING (Details) link:presentationLink link:calculationLink link:definitionLink 2195121 - Disclosure - SUBSEQUENT EVENTS link:presentationLink link:calculationLink link:definitionLink 2496459 - Disclosure - SUBSEQUENT EVENTS (Details) link:presentationLink link:calculationLink link:definitionLink 2197122 - Disclosure - QUARTERLY FINANCIAL INFORMATION link:presentationLink link:calculationLink link:definitionLink 2398316 - Disclosure - QUARTERLY FINANCIAL INFORMATION (Tables) link:presentationLink link:calculationLink link:definitionLink 2499460 - Disclosure - QUARTERLY FINANCIAL INFORMATION (Details) link:presentationLink link:calculationLink link:definitionLink