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v3.23.2

Related Party Transactions - Other Agreements with Cantor (Details) shares in Millions |  |  |  |  | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 20, 2020 | Nov. 23, 2018 USD ($) shares | Aug. 06, 2018 USD ($) | Jun. 05, 2015 shares | Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2023 USD ($) shares | Jun. 30, 2022 USD ($) | Dec. 31, 2022 USD ($) | Jun. 05, 2022 | Mar. 19, 2018 USD ($) | Aug. 31, 2013 USD ($)
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Commissions |  |  |  |  | $ 348,720,000 | $ 309,542,000 | $ 726,008,000 | $ 666,206,000 |  |  |  |
Common stock, exchange ratio |  | 1 |  |  |  |  |  |  |  | 1 |  |
Interest expense |  |  |  |  | 19,914,000 | 14,342,000 | 35,656,000 | 28,645,000 |  |  |  |
Reverse repurchase agreements |  |  |  |  | 200,000,000 |  | 200,000,000 |  | $ 0 |  |  |
Cantor |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Repurchase agreements |  |  |  |  | 0 |  | 0 |  | 0 |  |  |
Related Party |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Recognition of share of FX gains |  |  |  |  | 3,500,000 | 2,400,000 | 4,900,000 | 2,000,000 |  |  |  |
Commissions |  |  |  |  | 0 | 100,000 | 0 | 200,000 |  |  |  |
Investment authorization in asset-backed commercial paper program |  |  |  |  |  |  |  |  |  |  |  | $ 350,000,000
Investment in asset-backed commercial paper program |  |  |  |  | 0 |  | 0 |  | 0 |  |  |
Right to exchange from Class A to Class B common stock (up to) (in shares) | shares |  |  |  | 34.6 |  |  |  |  |  |  |  |
Common stock, issued during the period, additional consideration |  | $ 0 |  |  |  |  |  |  |  |  |  |
Reverse repurchase agreements |  |  |  |  | 200,000,000 |  | 200,000,000 |  | 0 |  |  |
Related Party | Cantor |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Right to exchange from Class A to Class B common stock (up to) (in shares) | shares |  | 10.3 |  |  |  |  |  |  |  |  |  |
Related Party | CFGM |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Right to exchange from Class A to Class B common stock (up to) (in shares) | shares |  | 0.7 |  |  |  |  |  |  |  |  |  |
Related Party | Revolving credit facility | BGC Credit Agreement |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of debt component |  |  |  |  |  |  |  |  |  |  | $ 250,000,000 |
Related Party | Revolving credit facility | Amendment to BGC Credit Agreement |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of debt component |  |  | $ 400,000,000 |  |  |  |  |  |  |  | $ 250,000,000 |
Debt instrument, extended term |  |  | 1 year |  |  |  |  |  |  |  |  |
Debt instrument, non-extension notice term |  |  | 6 months |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate | 1.00% |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, current borrowing capacity |  |  |  |  | 0 |  | 0 |  | $ 0 |  |  |
Interest expense |  |  |  |  | $ 0 | $ 0 | $ 0 | $ 0 |  |  |  |
Related Party | Class B Common Stock |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Right to exchange from Class A to Class B common stock (up to) (in shares) | shares |  |  |  |  |  |  | 23.6 |  |  |  |  |
Related Party | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Right to exchange from Class A to Class B common stock (up to) (in shares) | shares |  |  |  | 34.6 |  |  | 23.6 |  |  |  |  |

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