0000001 - Document - Cover 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 link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - Organization and Basis of Presentation link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Limited Partnership Interests in Newmark Holdings and BGC Holdings link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Acquisitions link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Earnings Per Share and Weighted-Average Shares Outstanding link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Stock Transactions and Unit Purchases link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Investments link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Capital and Liquidity Requirements link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Loans Held for Sale, at Fair Value link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Derivatives link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Revenues from Contracts with Customers link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Capital Markets link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Mortgage Servicing Rights, Net link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - Goodwill and Other Intangible Assets, Net link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - Fixed Assets, Net link:presentationLink link:calculationLink link:definitionLink 9952173 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 9952174 - Disclosure - Other Current Assets and Other Assets link:presentationLink link:calculationLink link:definitionLink 9952175 - Disclosure - Warehouse Facilities Collateralized by U.S. Government Sponsored Enterprises link:presentationLink link:calculationLink link:definitionLink 9952176 - Disclosure - Debt link:presentationLink link:calculationLink link:definitionLink 9952177 - Disclosure - Financial Guarantee Liability link:presentationLink link:calculationLink link:definitionLink 9952178 - Disclosure - Concentrations of Credit Risk link:presentationLink link:calculationLink link:definitionLink 9952179 - Disclosure - Escrow and Custodial Funds link:presentationLink link:calculationLink link:definitionLink 9952180 - Disclosure - Fair Value of Financial Assets and Liabilities link:presentationLink link:calculationLink link:definitionLink 9952181 - Disclosure - Related Party Transactions link:presentationLink link:calculationLink link:definitionLink 9952182 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 9952183 - Disclosure - Accounts Payable, Accrued Expenses and Other Liabilities link:presentationLink link:calculationLink link:definitionLink 9952184 - Disclosure - Compensation link:presentationLink link:calculationLink link:definitionLink 9952185 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 9952186 - Disclosure - Subsequent Events 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 - Acquisitions (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Earnings Per Share and Weighted-Average Shares Outstanding (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Stock Transactions and Unit Purchases (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Loans Held for Sale, at Fair Value (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Derivatives (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Revenues from Contracts with Customers (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Capital Markets (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Mortgage Servicing Rights, Net (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Goodwill and Other Intangible Assets, Net (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Fixed Assets, Net (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Other Current Assets and Other Assets (Tables) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Warehouse Facilities Collateralized by U.S. Government Sponsored Enterprises (Tables) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Debt (Tables) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Financial Guarantee Liability (Tables) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Fair Value of Financial Assets and Liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Accounts Payable, Accrued Expenses and Other Liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Limited Partnership Interests in Newmark Holdings and BGC Holdings (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Summary of Significant Accounting Policies - Schedule of Restricted Cash and Short-Term Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Summary of Significant Accounting Policies - Schedule of Restricted Cash and Short-Term Investments Cost Basis and Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Summary of Significant Accounting Policies - Schedule of Cash and Cash Equivalents and Restricted Cash (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Summary of Significant Accounting Policies - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Summary of Significant Accounting Policies - Schedule of Revenue by Segment (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Summary of Significant Accounting Policies - Schedule of Revenue by Geographic Area (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Acquisitions - Schedule of Components of Purchase Consideration Transferred and Preliminary Allocation of Assets Acquired and Liabilities Assumed (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Acquisitions - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Earnings Per Share and Weighted-Average Shares Outstanding - Schedule of Basic Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Earnings Per Share and Weighted-Average Shares Outstanding - Schedule of Fully Diluted Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Earnings Per Share and Weighted-Average Shares Outstanding - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Stock Transactions and Unit Purchases - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Stock Transactions and Unit Purchases - Schedule of Changes in Shares of Common Stock Outstanding (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Stock Transactions and Unit Purchases - Schedule of Share Repurchase Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Stock Transactions and Unit Purchases - Schedule of Changes in Carrying Amount of Redeemable Partnership Interest (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Capital and Liquidity Requirements (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Loans Held for Sale, at Fair Value - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Loans Held for Sale, at Fair Value - Schedule of Loans Held for Sale at Cost Basis and Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Loans Held for Sale, at Fair Value - Schedule of Fair Value Adjustments on Loans Held for Sale (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - Derivatives - Schedule of Fair Value of Derivative Contracts (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - Derivatives - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Derivatives - Schedule of Gains Losses on Derivative Contracts Included in Condensed Consolidated Statements of Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Derivatives - Schedule of Gains Losses on Derivative Contracts Included in Condensed Consolidated Statements of Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - Revenues from Contracts with Customers - Schedule of Revenues from Contracts with Customers and Our Other Sources of Revenues (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - Revenues from Contracts with Customers - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - Revenues from Contracts with Customers - Schedule of Revenue Remaining Performance Obligation (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - Revenues from Contracts with Customers - Schedule of Revenue Remaining Performance Obligation (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - Capital Markets (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - Mortgage Servicing Rights, Net - Schedule of Changes in the Carrying Amount of Mortgage Servicing Rights (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - Mortgage Servicing Rights, Net - Schedule of Servicing Fees and Escrow Interest (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - Mortgage Servicing Rights, Net - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - Goodwill and Other Intangible Assets, Net - Schedule of Changes in Carrying Amount of Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - Goodwill and Other Intangible Assets, Net - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - Goodwill and Other Intangible Assets, Net - Schedule of Components of Other Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - Goodwill and Other Intangible Assets, Net - Schedule of Components of Other Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - Goodwill and Other Intangible Assets, Net - Schedule of Estimated Future Amortization of Definite Life Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - Fixed Assets, Net - Schedule of Components of Fixed Assets, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - Fixed Assets, Net - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - Leases - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - Leases - Schedule of Lease Payments (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - Leases - Schedule of Lease Payments (Details) link:presentationLink link:calculationLink link:definitionLink 9955570 - Disclosure - Other Current Assets and Other Assets - Schedule of Other Current Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - Other Current Assets and Other Assets - Schedule of Other Noncurrent Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955572 - Disclosure - Warehouse Facilities Collateralized by U.S. Government Sponsored Enterprises (Details) link:presentationLink link:calculationLink link:definitionLink 9955573 - Disclosure - Debt - Schedule of Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955574 - Disclosure - Debt - Senior Notes (Details) link:presentationLink link:calculationLink link:definitionLink 9955575 - Disclosure - Debt - Schedule of Senior Notes Carrying Amount (Details) link:presentationLink link:calculationLink link:definitionLink 9955576 - Disclosure - Debt - Schedule of Senior Notes Net Interest Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955577 - Disclosure - Debt - Debt Repurchase Program (Details) link:presentationLink link:calculationLink link:definitionLink 9955578 - Disclosure - Debt - Credit Facility (Details) link:presentationLink link:calculationLink link:definitionLink 9955579 - Disclosure - Debt - Cantor Credit Agreement (Details) link:presentationLink link:calculationLink link:definitionLink 9955580 - Disclosure - Financial Guarantee Liability - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955581 - Disclosure - Financial Guarantee Liability - Schedule of Changes on Estimated Liability Under Guarantee Liability (Details) link:presentationLink link:calculationLink link:definitionLink 9955582 - Disclosure - Concentrations of Credit Risk (Details) link:presentationLink link:calculationLink link:definitionLink 9955583 - Disclosure - Escrow and Custodial Funds (Details) link:presentationLink link:calculationLink link:definitionLink 9955584 - Disclosure - Fair Value of Financial Assets and Liabilities - Schedule of Fair Value Hierarchy of Financial Assets and Liabilities under U.S. GAAP Guidance (Details) link:presentationLink link:calculationLink link:definitionLink 9955585 - Disclosure - Fair Value of Financial Assets and Liabilities - Schedule of Changes in Level 3 Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955586 - Disclosure - Fair Value of Financial Assets and Liabilities - Schedule of Quantitative Information about Level 3 Fair Value Measurements (Details) link:presentationLink link:calculationLink link:definitionLink 9955587 - Disclosure - Fair Value of Financial Assets and Liabilities - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955588 - Disclosure - Related Party Transactions - Service Agreements (Details) link:presentationLink link:calculationLink link:definitionLink 9955589 - Disclosure - Related Party Transactions - Loans, Forgivable Loans and Other Receivables from Employees and Partners (Details) link:presentationLink link:calculationLink link:definitionLink 9955590 - Disclosure - Related Party Transactions - Transactions with Cantor Commercial Real Estate, L.P. (Details) link:presentationLink link:calculationLink link:definitionLink 9955591 - Disclosure - Related Party Transactions - Transactions with Executive Officers and Directors (Howard & Brandon Lutnick) (Details) link:presentationLink link:calculationLink link:definitionLink 9955592 - Disclosure - Related Party Transactions - Transactions with Executive Officers and Directors (Barry Gosin) (Details) link:presentationLink link:calculationLink link:definitionLink 9955593 - Disclosure - Related Party Transactions - Transactions with Executive Officers and Directors (Michael Rispoli) (Details) link:presentationLink link:calculationLink link:definitionLink 9955594 - Disclosure - Related Party Transactions - Transactions with Executive Officers and Directors (Stephen Merkel) (Details) link:presentationLink link:calculationLink link:definitionLink 9955595 - Disclosure - Related Party Transactions - Transactions with Executive Officers and Directors (Kyle Lutnick) (Details) link:presentationLink link:calculationLink link:definitionLink 9955596 - Disclosure - Related Party Transactions - Transactions with Executive Officers and Directors (Luis Alvarado) (Details) link:presentationLink link:calculationLink link:definitionLink 9955597 - Disclosure - Related Party Transactions - Other Related Party Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 9955598 - Disclosure - Related Party Transactions - Services Agreement with Cantor Fitzgerald Europe (Details) link:presentationLink link:calculationLink link:definitionLink 9955599 - Disclosure - Related Party Transactions - Joint Capital Raising and Advisory Services Authorization with CF&Co (Details) link:presentationLink link:calculationLink link:definitionLink 9955600 - Disclosure - Related Party Transactions - Market-Making Registration Statement for CF&Co, Referral Payment and Placement Agent Authorization with CF&Co (Details) link:presentationLink link:calculationLink link:definitionLink 9955601 - Disclosure - Related Party Transactions - Cantor Rights to Purchase Cantor Units from Newmark Holdings (Details) link:presentationLink link:calculationLink link:definitionLink 9955602 - Disclosure - Related Party Transactions - 7.500% Senior Notes (Details) link:presentationLink link:calculationLink link:definitionLink 9955603 - Disclosure - Related Party Transactions - Services Agreement with Cantor Fitzgerald Europe for the Provision of Real Estate Investment Banking Services (Details) link:presentationLink link:calculationLink link:definitionLink 9955604 - Disclosure - Accounts Payable, Accrued Expenses and Other Liabilities - Schedule of Current Portion of Accounts Payable, Accrued Expenses and Other Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955605 - Disclosure - Accounts Payable, Accrued Expenses and Other Liabilities - Schedule of Other Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955606 - Disclosure - Compensation - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955607 - Disclosure - Compensation - Schedule of Compensation Expense Related to Limited Partnership Units and Restricted Stock Units (Details) link:presentationLink link:calculationLink link:definitionLink 9955608 - Disclosure - Compensation - Schedule of Activity Associated with Limited Partnership Units (Details) link:presentationLink link:calculationLink link:definitionLink 9955609 - Disclosure - Compensation - Schedule of Units Redeemed in Connection with Issuance of Class A Common Stock (Details) link:presentationLink link:calculationLink link:definitionLink 9955610 - Disclosure - Compensation - Schedule of Compensation Expense Related to Issuance of Common Stock and Grants of Exchangeability (Details) link:presentationLink link:calculationLink link:definitionLink 9955611 - Disclosure - Compensation - Schedule of Limited Partnership Units with a Post-Termination Payout (Details) link:presentationLink link:calculationLink link:definitionLink 9955612 - Disclosure - Compensation - Schedule of Compensation Expense Related to Limited Partnership Units that were Not Redeemed (Details) link:presentationLink link:calculationLink link:definitionLink 9955613 - Disclosure - Compensation - Schedule of Grant of Conversion Rights to Newmark Employees (Details) link:presentationLink link:calculationLink link:definitionLink 9955614 - Disclosure - Compensation - Schedule of Activity Associated with Restricted Stock Units (Details) link:presentationLink link:calculationLink link:definitionLink 9955615 - Disclosure - Compensation - Schedule of Expense Related to Newmark and BGC RSUs (Details) link:presentationLink link:calculationLink link:definitionLink 9955616 - Disclosure - Commitments and Contingencies - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955617 - Disclosure - Subsequent Events (Details) link:presentationLink link:calculationLink link:definitionLink