Regulatory Capital Requirements - Schedule of Regulatory Capital Requirements and Schedule of Regulatory Capital Requirements (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
TWL
Regulatory Capital Requirements
Regulatory Capital	$ 59,460	$ 63,532
Regulatory Capital Requirement	3,280	3,646
Excess Regulatory Capital	56,180	59,886
DW
Regulatory Capital Requirements
Regulatory Capital	212,023	204,134
Regulatory Capital Requirement	3,205	4,359
Excess Regulatory Capital	208,818	199,775
TWD
Regulatory Capital Requirements
Regulatory Capital	48,279	52,808
Regulatory Capital Requirement	1,585	1,208
Excess Regulatory Capital	46,694	51,600
TEL
Regulatory Capital Requirements
Regulatory Capital	90,696	56,152
Regulatory Capital Requirement	33,465	32,499
Excess Regulatory Capital	57,231	23,653
TWJ
Regulatory Capital Requirements
Regulatory Capital	11,572	3,589
Regulatory Capital Requirement	2,543	2,841
Excess Regulatory Capital	9,029	748
TWEU
Regulatory Capital Requirements
Regulatory Capital	8,393	8,073
Regulatory Capital Requirement	7,109	6,838
Excess Regulatory Capital	1,284	1,235
TESL
Regulatory Capital Requirements
Regulatory Capital	5,926	5,755
Regulatory Capital Requirement	970	942
Excess Regulatory Capital	4,956	4,813
TESBV
Regulatory Capital Requirements
Regulatory Capital	3,278	1,591
Regulatory Capital Requirement	1,432	1,377
Excess Regulatory Capital	1,846	214
YB
Regulatory Capital Requirements
Regulatory Capital	5,374	11,677
Regulatory Capital Requirement	200	0
Excess Regulatory Capital	5,174	11,677
TDIFC
Regulatory Capital Requirements
Regulatory Capital	250	250
Regulatory Capital Requirement	30	30
Excess Regulatory Capital	220	220
ICDLC
Regulatory Capital Requirements
Regulatory Capital	12,889	20,845
Regulatory Capital Requirement	625	594
Excess Regulatory Capital	12,264	20,251
ICDLT
Regulatory Capital Requirements
Regulatory Capital	8,059	6,504
Regulatory Capital Requirement	3,086	2,997
Excess Regulatory Capital	4,973	3,507
ICDEU
Regulatory Capital Requirements
Regulatory Capital	513	523
Regulatory Capital Requirement	156	150
Excess Regulatory Capital	357	373
TW SEF
Regulatory Capital Requirements
Financial Resources	67,554	50,974
Required Financial Resources	17,500	16,500
Excess Financial Resources	50,054	34,474
Liquid Financial Assets	21,728	28,163
Required Liquid Financial Assets	4,375	4,125
Excess Liquid Financial Assets	17,353	24,038
DW SEF
Regulatory Capital Requirements
Financial Resources	13,883	14,083
Required Financial Resources	9,096	9,062
Excess Financial Resources	4,787	5,021
Liquid Financial Assets	7,971	9,956
Required Liquid Financial Assets	2,274	2,266
Excess Liquid Financial Assets	$ 5,697	$ 7,690

Amount of net capital of futures commission merchant (FCM) in excess of required net capital per Commodity Futures Trading Commission's (CFTC) requirement.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name CFTC Regulation
-Number 1
-Section 17
-Paragraph a
-Subparagraph (1)(i)
-Publisher CFTC

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- Definition

Amount of adjusted net capital of futures commission merchant (FCM) per Commodity Futures Trading Commission's (CFTC) requirement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name CFTC Regulation
-Number 1
-Section 17
-Paragraph c
-Subparagraph (5)
-Publisher CFTC

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Amount of net capital required to be maintained by futures commission merchant (FCM) per Commodity Futures Trading Commission's (CFTC) requirement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name CFTC Regulation
-Number 1
-Section 17
-Paragraph a
-Subparagraph (1)(i)
-Publisher CFTC

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- Definition

The amount by which actual liquid financial assets exceeds (does not exceed) required liquid financial assets under the Commodity Exchange Act

+ References

No definition available.

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- Definition

Amount by which the entity's regulatory capital (as defined) exceeds the requirement.

+ References

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- Definition

Liquid financial assets calculated under the Commodity Exchange Act.

+ References

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- Definition

Regulatory capital as calculated for each entity under applicable regulations.

+ References

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- Definition

Amount of regulatory capital required to be maintained for each entity under applicable regulations.

+ References

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- Definition

Amount of liquid financial assets required to be maintained under the Commodity Exchange Act.

+ References

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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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477270/942-505-50-1B

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477270/942-505-50-1

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