Segment Reporting (Narrative) (Details) |
3 Months Ended |
|---|---|
|
Mar. 31, 2026
Segment
| |
| Segment Reporting Information [Line Items] | |
| Number of business segments | 3 |
| Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] | Chairman And Chief Executive Officer [Member] |
| Segment Reporting, Expense Information Used by CODM, Description | Our CODM regularly reviews segment net revenues, compensation and benefits expense, non-compensation operating expenses, and income before income taxes. Amounts included in non-compensation operating expenses include “Occupancy and equipment rental,” “Communications and office supplies,” “Commissions and floor brokerage,” “Provision for credit losses,” and “Other operating expenses.” |
| Segment Reporting, Other Segment Item, Composition, Description | The Other segment includes interest income from stock borrow activities, unallocated interest expense, interest income and gains and losses from investments held, amortization of stock-based awards, and all unallocated overhead cost associated with the execution of orders; processing of securities transactions; custody of client securities; receipt, identification, and delivery of funds and securities; compliance with regulatory and legal requirements; internal financial accounting and controls; and general administration and acquisition charges |
| Global Wealth Management [Member] | |
| Segment Reporting Information [Line Items] | |
| Number of businesses within operating segment | 2 |