Related Party Transactions - Service Agreements (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
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| Related Party Transaction [Line Items] | ||
| Total revenues | $ 955,481 | $ 664,240 |
| Tower Bridge International Services LP | BGC Partners, Inc. | ||
| Related Party Transaction [Line Items] | ||
| Company ownership of Tower Bridge (as a percent) | 52.00% | |
| Tower Bridge International Services LP | Cantor | ||
| Related Party Transaction [Line Items] | ||
| Ownership percentage by noncontrolling owners (as a percent) | 48.00% | |
| Related Party | ||
| Related Party Transaction [Line Items] | ||
| Mark-up cost of services (as a percent) | 7.50% | |
| Share of net profit (loss) from noncontrolling interest | $ 1,100 | 500 |
| Compensation to leased employees | 27,800 | 28,100 |
| Related Party | Service Agreement with Cantor | ||
| Related Party Transaction [Line Items] | ||
| Total revenues | 4,300 | 4,400 |
| Service charges | $ 35,900 | $ 36,700 |
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- Definition Percentage mark-up charged to related party for cost of administrative services, technology services or other support. No definition available.
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- Definition Total expense related to fees paid to a related party to cover the compensation costs of leased employees, which is included as "compensation and employee benefits" in the consolidated statements of operations. No definition available.
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- Definition Amount after tax of income (loss) from continuing operations attributable to the noncontrolling interest. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions. No definition available.
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