0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Condensed Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Condensed Consolidated Statements of Redeemable Noncontrolling Interest, Series A Redeemable Convertible Preferred Stock and Stockholders’ Equity link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Condensed Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 9952156 - Disclosure - Description of Business and Basis of Presentation link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - Revenue Recognition and Contract Costs link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Investments and Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Significant Balance Sheet Components link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Redeemable Preferred Stock link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Stockholders’ Equity link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Stock-Based Compensation link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Restructuring link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Net Income (Loss) Per Share link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Segment Information link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Assets Held for Sale and Discontinued Operations link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - Revision of Previously Issued Quarterly Information link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Summary of Significant Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Revenue Recognition and Contract Costs (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Investments and Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Significant Balance Sheet Components (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Stock-Based Compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Restructuring (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Net Income (Loss) Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Assets Held for Sale and Discontinued Operations (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Revision of Previously Issued Quarterly Information (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Description of Business and Basis of Presentation (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Summary of Significant Accounting Policies - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Summary of Significant Accounting Policies - Schedule of Capitalized Internal-Use (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Summary of Significant Accounting Policies - Schedule of Concentration of Credit Risk (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Revenue Recognition and Contract Costs - Schedule of Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Revenue Recognition and Contract Costs - Schedule of Contract Balances (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Revenue Recognition and Contract Costs - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Revenue Recognition and Contract Costs - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Revenue Recognition and Contract Costs - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Revenue Recognition and Contract Costs - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Investments and Fair Value Measurements - Schedule of Available for Sale Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Investments and Fair Value Measurements - Schedule of Available for Sale Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Investments and Fair Value Measurements - Schedule of Debt Maturities (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Investments and Fair Value Measurements - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Significant Balance Sheet Components - Schedule of Prepaid Expenses and Other Current Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Significant Balance Sheet Components - Schedule of Property and Equipment, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Significant Balance Sheet Components - Property and Equipment, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Significant Balance Sheet Components - Schedule of Other Non-Current Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Significant Balance Sheet Components - Investments in Non-Marketable Equity Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Significant Balance Sheet Components - Notes Receivable and Equity Method Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Significant Balance Sheet Components - Schedule of Other Current Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Significant Balance Sheet Components - Schedule of Other Non-Current Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Leases - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Leases - Schedule of Maturities of Operating Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Leases - Schedule of Maturities of Operating Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Commitments and Contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Commitments and Contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Redeemable Preferred Stock (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Stockholders’ Equity (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Stock-Based Compensation - 2012 Stock Option Plan (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Stock-Based Compensation - 2021 Equity Incentive Plan (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Stock-Based Compensation - Schedule of Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Stock-Based Compensation - Schedule of RSU Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Stock-Based Compensation - Restricted Stock Units (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Stock-Based Compensation - Schedule of PSU Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - Stock-Based Compensation - Performance Stock Units (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - Stock-Based Compensation - Schedule of Valuation Assumptions of PSU (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Stock-Based Compensation - Non-Plan Co-Founder and Head of Blend Options (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - Stock-Based Compensation - Schedule of Valuation Assumptions of Non-Plan Co-Founder and Head of Blend Options (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - Stock-Based Compensation - Schedule of Stock-Based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - Stock-Based Compensation - Schedule of Stock-Based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - Restructuring - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - Restructuring - Schedule of Reconciliation of the Restructuring Liability Balances (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - Net Income (Loss) Per Share - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - Net Income (Loss) Per Share - Schedule of Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - Net Income (Loss) Per Share - Schedule of Antidilutive Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - Segment Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - Assets Held for Sale and Discontinued Operations - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - Assets Held for Sale and Discontinued Operations - Schedule of Assets and Liabilities Held for Sale from Discontinued Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - Assets Held for Sale and Discontinued Operations - Schedule of Operating Results from Disposal Group (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - Revision of Previously Issued Quarterly Information - Schedule of Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - Revision of Previously Issued Quarterly Information - Schedule of Condensed Consolidated Statements of Cash Flows (Details) link:presentationLink link:calculationLink link:definitionLink