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v3.25.3

Related Party Transactions - Service Agreements (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Related Party Transaction [Line Items] |  |  |  |
Total revenues | $ 736,849 | $ 561,111 | $ 2,185,093 | $ 1,690,486
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% |  | 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 | $ 600 | 500 | $ 2,200 | 1,200
Compensation to leased employees | 26,000 | 18,700 | 78,900 | 55,700
Related Party | Service Agreement with Cantor |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Total revenues | 4,500 | 5,100 | 14,100 | 14,200
Service charges | $ 35,300 | $ 26,900 | $ 107,000 | $ 79,200

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