Related Party Transactions - Receivables from and Payables to Related Broker-Dealers (Details) - Related Party - USD ($) $ in Millions |
Mar. 31, 2026 |
Dec. 31, 2025 |
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| Transactions with Freedom | ||
| Related Party Transaction [Line Items] | ||
| Receivables from related parties | $ 1.8 | $ 1.4 |
| Open Derivative Contracts with Cantor | ||
| Related Party Transaction [Line Items] | ||
| Receivables from related parties | 4.0 | 1.8 |
| Payables to related parties | 3.9 | 0.8 |
| Fails and Pending Trades with Cantor | ||
| Related Party Transaction [Line Items] | ||
| Receivables from related parties | $ 0.0 | $ 0.0 |
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- Definition Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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