v3.26.1
Segment Reporting And Geographic Information (Segment Table) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Segment Reporting Information [Line Items]      
Total net revenues $ 1,669 $ 1,427  
Transaction based fees [1] 82 102  
Non-transaction based fees [1] 24 19  
Employee compensation [2] 153 143  
Advertising [3] 28 21  
Other expenses [4] 94 87  
Total non-interest expenses 381 372  
Income before income taxes 1,288 1,055  
Income tax expense 117 91  
Net income 1,171 964  
Assets 218,749   $ 203,240
Depreciation and amortization [5] 16 15  
Operating Segments [Member]      
Segment Reporting Information [Line Items]      
Assets $ 218,749 $ 157,670  
[1] Reported in “Execution, clearing and distribution fees” in the condensed consolidated statements of comprehensive income.
[2] Reported in “Employee compensation and benefits” in the condensed consolidated statements of comprehensive income.
[3] Reported in “General and administrative” in the condensed consolidated statements of comprehensive income.
[4] Includes “Occupancy, depreciation and amortization”; “Communications”; “Customer bad debt”; employee benefits and other personnel expenses reported in “Employee compensation and benefits”; and professional services, legal and regulatory matters, and other administrative expenses reported in “General and administrative” in the condensed consolidated statements of comprehensive income.
[5] Reported in “Occupancy, depreciation and amortization” in the condensed consolidated statements of comprehensive income.