v3.25.2
Segment Reporting And Geographic Information (Segment Table) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Segment Reporting Information [Line Items]          
Total net revenues $ 1,480 $ 1,230 $ 2,907 $ 2,433  
Transaction based fees [1] 94 94 196 174  
Non-transaction based fees [1] 22 20 41 42  
Employee compensation [2] 142 132 285 266  
Advertising [3] 26 18 47 31  
Other expenses [4] 92 86 179 174  
Total non-interest expenses 376 350 748 687  
Income before income taxes 1,104 880 2,159 1,746  
Income tax expense 98 71 189 142  
Net income 1,006 809 1,970 1,604  
Assets 181,475   181,475   $ 150,142
Depreciation and amortization [5] 15 17 30 34  
Operating Segments [Member]          
Segment Reporting Information [Line Items]          
Assets $ 181,475 $ 136,648 $ 181,475 $ 136,648  
[1] Included in “Execution, clearing and distribution fees” in the condensed consolidated statements of comprehensive income.
[2] Included in “Employee compensation and benefits” in the condensed consolidated statements of comprehensive income.
[3] Included 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 included in “Employee compensation and benefits”; and professional services, legal and regulatory matters, and other administrative expenses included in “General and administrative” in the condensed consolidated statements of comprehensive income.
[5] Included in “Occupancy, depreciation and amortization” in the condensed consolidated statements of comprehensive income.