Debt Instrument, Remaining Authorized Purchase Amount

No definition available.

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Namespace Prefix:	bgcg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

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Balance Type:	na
Period Type:	instant

- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Expense related to distribution, servicing and underwriting fees.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

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

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+ Details

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Balance Type:	credit
Period Type:	instant

- 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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Balance Type:	credit
Period Type:	duration

- 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.

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- Details

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- Details

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- Details

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Related Party Transactions - Other Transactions with CF&Co (Details) - USD ($) $ in Thousands	Apr. 02, 2025	Jun. 10, 2024	May 25, 2023	Jul. 10, 2020	Mar. 31, 2026	Dec. 31, 2025	Nov. 10, 2025	Aug. 21, 2024	Jul. 01, 2023	Jun. 11, 2020
Related Party Transaction [Line Items]
Long-term debt					$ 1,538,825	$ 1,538,019
Debt instrument, remaining authorized purchase amount					$ 49,500
Maximum
Related Party Transaction [Line Items]
Purchased senior notes									$ 50,000	$ 50,000
BGC Partners 8.000% Senior Notes due May 25, 2028
Related Party Transaction [Line Items]
Debt instrument, repurchased face amount								$ 500
Stated interest rate			8.00%		8.00%			8.00%
Long-term debt					$ 2,263	2,262		$ 500
Principal amount of debt component			$ 350,000
BGC Partners 4.375% Senior Notes due December 15, 2025
Related Party Transaction [Line Items]
Stated interest rate				4.375%
Principal amount of debt component				$ 300,000
BGC Group 6.600% Senior Notes due June 10, 2029
Related Party Transaction [Line Items]
Stated interest rate					6.60%		6.60%
Long-term debt					$ 496,798	496,548
Principal amount of debt component		$ 500,000
Underwriting fees paid		$ 400
BGC Group 6.150% Senior Notes due April 2, 2030
Related Party Transaction [Line Items]
Stated interest rate	6.15%				6.15%
Long-term debt					$ 694,185	$ 693,822
Related Party \| BGC Partners 8.000% Senior Notes due May 25, 2028 \| Underwriting fees
Related Party Transaction [Line Items]
Related party expenses			$ 200
Related Party \| BGC Partners 4.375% Senior Notes due December 15, 2025 \| Underwriting fees
Related Party Transaction [Line Items]
Purchased senior notes				14,500
Related party expenses				$ 200
Related Party \| BGC Group 6.150% Senior Notes due April 2, 2030 \| Underwriting fees
Related Party Transaction [Line Items]
Principal amount of debt component	$ 700,000
Related party expenses	$ 400