Revenue from Contracts with Customers - Disaggregation of Revenue by Asset Class (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Disaggregation of Revenue [Line Items]
Total Revenue	$ 502,776	$ 424,844	$ 981,733	$ 848,384
Money market
Disaggregation of Revenue [Line Items]
Total Revenue	252,636	226,000	509,820	449,346
Equity
Disaggregation of Revenue [Line Items]
Total Revenue	152,989	118,999	296,632	236,902
Fixed-income
Disaggregation of Revenue [Line Items]
Total Revenue	49,035	48,286	97,721	97,720
Other
Disaggregation of Revenue [Line Items]
Total Revenue	$ 48,116	$ 31,559	$ 77,560	$ 64,416

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

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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