Condensed Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) - USD ($) $ in Millions |
Jun. 30, 2026 |
Jun. 30, 2025 |
|---|---|---|
| Statement of Cash Flows [Abstract] | ||
| Non-cash equivalent segregated assets | $ 441.5 | $ 13.4 |
| Segregated cash and other non cash equivalent assets included with in deposits and receivables from broker dealers clearing organizations and counter parties | 3,169.5 | 1,982.2 |
| Non segregated cash and other non cash equivalent assets included with in deposits and receivables from broker dealers clearing organizations and counter parties | $ 4,568.9 | $ 2,649.3 |