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No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Fair value amount of debt instrument that was repurchased.

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No definition available.

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Face (par) amount of the original debt instrument that was repurchased.

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No definition available.

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- Definition

Expense related to distribution, servicing and underwriting fees.

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- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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- Definition

Amount of expense for investment advisory service, including, but not limited to, managing money in fund.

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- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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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.

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Number of new stock issued during the period.

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Related Party Transactions - CEO Program and Other Transactions with CF&Co (Details) - USD ($) shares in Millions							12 Months Ended
	Apr. 02, 2025	Jun. 10, 2024	May 25, 2023	Jul. 10, 2020	Sep. 27, 2019	Jul. 24, 2018	Dec. 31, 2025	Dec. 31, 2024	Nov. 10, 2025	Aug. 21, 2024	Jun. 11, 2020
Related Party Transaction [Line Items]
Long-term debt							$ 1,538,019,000	$ 1,141,709,000
Debt instrument, remaining authorized purchase amount							$ 49,500,000
Maximum
Related Party Transaction [Line Items]
Purchased senior notes											$ 50,000,000.0
5.375% Senior Notes due 2023
Related Party Transaction [Line Items]
Principal amount of debt component						$ 450,000,000.0
Stated interest rate						5.375%
3.750% Senior Notes due 10/1/2024
Related Party Transaction [Line Items]
Principal amount of debt component					$ 300,000,000.0
Stated interest rate					3.75%
BGC Partners 8.000% Senior Notes due May 25, 2028
Related Party Transaction [Line Items]
Principal amount of debt component			$ 350,000,000.0
Stated interest rate			8.00%				8.00%			8.00%
Debt instrument, repurchased face amount										$ 500,000
Long-term debt							$ 2,262,000	2,257,000		$ 500,000
BGC Partners 4.375% Senior Notes due December 15, 2025
Related Party Transaction [Line Items]
Principal amount of debt component				$ 300,000,000.0
Stated interest rate				4.375%	4.375%		4.375%
Long-term debt							$ 0	11,824,000
BGC Partners 8.000% Senior Notes due May 25, 2028
Related Party Transaction [Line Items]
Principal amount of debt component			$ 350,000,000.0
Stated interest rate			8.00%				8.00%
BGC Group 6.600% Senior Notes due June 10, 2029
Related Party Transaction [Line Items]
Principal amount of debt component		$ 500,000,000.0
Stated interest rate		6.60%
Underwriting fees paid		$ 400,000
BGC Group 6.150% Senior Notes due April 2, 2030
Related Party Transaction [Line Items]
Principal amount of debt component	$ 700,000,000.0
Stated interest rate							6.15%		6.15%
Long-term debt							$ 693,822,000	$ 0
Related Party
Related Party Transaction [Line Items]
Issuance of common stock (in shares)							0.0	0.0
Related party expenses							$ 0	$ 0
Related Party \| 5.375% Senior Notes due 2023
Related Party Transaction [Line Items]
Advisory fees						$ 200,000
Related Party \| 5.375% Senior Notes due 2023 \| Underwriting fees
Related Party Transaction [Line Items]
Related party expenses						$ 300,000
Related Party \| 3.750% Senior Notes due 10/1/2024 \| Underwriting fees
Related Party Transaction [Line Items]
Related party expenses					$ 200,000
Related Party \| BGC Partners 4.375% Senior Notes due December 15, 2025 \| Underwriting fees
Related Party Transaction [Line Items]
Related party expenses				$ 200,000
Purchased senior notes							$ 14,500,000
Related Party \| BGC Partners 8.000% Senior Notes due May 25, 2028 \| Underwriting fees
Related Party Transaction [Line Items]
Related party expenses			$ 200,000
Related Party \| BGC Group 6.150% Senior Notes due April 2, 2030 \| Underwriting fees
Related Party Transaction [Line Items]
Related party expenses	$ 400,000