Regulatory Capital Requirements (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
TWL
Regulatory Capital Requirements
Regulatory Capital	$ 69,459	$ 65,479
Regulatory Capital Requirement	5,056	5,296
Excess Regulatory Capital	64,403	60,183
DW
Regulatory Capital Requirements
Regulatory Capital	305,076	260,326
Regulatory Capital Requirement	3,033	3,131
Excess Regulatory Capital	302,043	257,195
TWD
Regulatory Capital Requirements
Regulatory Capital	74,579	54,479
Regulatory Capital Requirement	1,425	1,458
Excess Regulatory Capital	73,154	53,021
TEL
Regulatory Capital Requirements
Regulatory Capital	133,140	94,572
Regulatory Capital Requirement	35,756	33,184
Excess Regulatory Capital	97,384	61,388
TWJ
Regulatory Capital Requirements
Regulatory Capital	12,657	10,619
Regulatory Capital Requirement	3,123	2,705
Excess Regulatory Capital	9,534	7,914
TWEU
Regulatory Capital Requirements
Regulatory Capital	11,619	8,253
Regulatory Capital Requirement	7,730	7,483
Excess Regulatory Capital	3,889	770
TESL
Regulatory Capital Requirements
Regulatory Capital	7,059	6,889
Regulatory Capital Requirement	992	1,177
Excess Regulatory Capital	6,067	5,712
TESBV
Regulatory Capital Requirements
Regulatory Capital	8,550	8,527
Regulatory Capital Requirement	3,211	4,028
Excess Regulatory Capital	5,339	4,499
YB
Regulatory Capital Requirements
Regulatory Capital	10,345	9,932
Regulatory Capital Requirement	674	0
Excess Regulatory Capital	9,671	9,932
TDIFC
Regulatory Capital Requirements
Regulatory Capital	786	283
Regulatory Capital Requirement	30	30
Excess Regulatory Capital	756	253
ICDLC
Regulatory Capital Requirements
Regulatory Capital	13,554	10,349
Regulatory Capital Requirement	893	766
Excess Regulatory Capital	12,661	9,583
ICDLT
Regulatory Capital Requirements
Regulatory Capital	9,144	7,992
Regulatory Capital Requirement	4,667	4,126
Excess Regulatory Capital	4,477	3,866
TWSA
Regulatory Capital Requirements
Regulatory Capital	568	735
Regulatory Capital Requirement	62	63
Excess Regulatory Capital	506	672
TAPL
Regulatory Capital Requirements
Regulatory Capital	93	148
Regulatory Capital Requirement	39	39
Excess Regulatory Capital	54	109
TW SEF
Regulatory Capital Requirements
Financial Resources	191,996	68,063
Required Financial Resources	19,000	18,000
Excess Financial Resources	172,996	50,063
Liquid Financial Assets	134,104	34,190
Required Liquid Financial Assets	4,750	4,500
Excess Liquid Financial Assets	129,354	29,690
DW SEF
Regulatory Capital Requirements
Financial Resources	17,234	15,027
Required Financial Resources	8,914	8,511
Excess Financial Resources	8,320	6,516
Liquid Financial Assets	12,705	10,664
Required Liquid Financial Assets	2,229	2,128
Excess Liquid Financial Assets	$ 10,476	$ 8,536

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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- Definition

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

+ Details

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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.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

Liquid financial assets calculated under the Commodity Exchange Act.

+ References

No definition available.

+ Details

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- Definition

Regulatory capital as calculated for each entity under applicable regulations.

+ References

No definition available.

+ Details

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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

No definition available.

+ Details

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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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