v3.26.3
Business Segments (Schedule of Operating Segments) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Segment Reporting [Line Items]        
Total revenues $ 2,393 $ 1,979 $ 7,063 $ 6,175
Transaction-based expenses (912) (664) (2,675) (2,318)
Revenues less transaction-based expenses 1,481 1,315 4,388 3,857
Directly consumed expenses 531 466 1,556 1,393
Other expenses 218 263 731 762
Operating income 732 586 2,101 1,702
Depreciation and amortization 165 158 496 471
Purchases of property and equipment 62 69 199 177
Operating segments | Capital Access Platforms        
Segment Reporting [Line Items]        
Total revenues 641 534 1,820 1,552
Directly consumed expenses 185 162 530 483
Other expenses 44 46 131 127
Operating income 412 326 1,159 942
Depreciation and amortization 11 10 35 29
Purchases of property and equipment 14 18 45 46
Operating segments | Financial Technology        
Segment Reporting [Line Items]        
Total revenues 529 457 1,585 1,352
Directly consumed expenses 248 220 736 646
Other expenses 35 31 108 87
Operating income 246 206 741 619
Depreciation and amortization 21 14 60 38
Purchases of property and equipment 36 37 104 89
Operating segments | Market Services        
Segment Reporting [Line Items]        
Total revenues 1,221 967 3,640 3,208
Transaction-based expenses (912) (664) (2,675) (2,318)
Revenues less transaction-based expenses 309 303 965 890
Directly consumed expenses 98 84 290 264
Other expenses 22 22 68 62
Operating income 189 197 607 564
Depreciation and amortization 11 11 34 34
Purchases of property and equipment 12 14 50 42
Corporate        
Segment Reporting [Line Items]        
Total revenues 2 21 18 63
Directly consumed expenses 117 164 424 486
Other expenses 117 164 424 486
Operating income (115) (143) (406) (423)
Depreciation and amortization $ 122 $ 123 $ 367 $ 370