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Variable Interest Entities - Narrative (Details)	Dec. 31, 2025	May 09, 2025	Apr. 19, 2024
Disposed of by sale | RFQ-hub
Variable Interest Entity [Line Items]
Divestiture of joint venture percentage		49.00%	49.00%
Disposal of minority interest, percentage		2.00%
JV building microwave communication networks in US and Europe
Variable Interest Entity [Line Items]
Ownership interest	50.00%
JV building microwave communication networks in US and Asia
Variable Interest Entity [Line Items]
Ownership of equity of JV held be each investor (as a percent)	12.50%
JV offering derivatives trading technology and execution services
Variable Interest Entity [Line Items]
Ownership interest	9.80%
JV developing a member-owned equities exchange with the goal of increasing competition
Variable Interest Entity [Line Items]
Ownership interest	12.70%
JV developing and operating cryptocurrency trading platform
Variable Interest Entity [Line Items]
Ownership interest	8.50%
JV Growth and expansion of multi-asset request-for-quote communication platform
Variable Interest Entity [Line Items]
Ownership interest			51.00%
Disposal of minority interest, percentage		2.00%

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