v3.26.3
Segment Reporting - Schedule of Segment Reporting Information (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 $ 3,630 $ 3,007 $ 10,907 $ 9,498
Transaction-based expenses 865 596 2,499 2,071
Total revenues, less transaction-based expenses 2,765 2,411 8,408 7,427
Other operating expenses 907 841 2,668 2,513
Depreciation and amortization 399 387 1,172 1,171
Acquisition-related transaction and integration costs 49 9 102 51
Total operating expenses 1,355 1,237 3,942 3,735
Operating income 1,410 1,174 4,466 3,692
Total other income/(expense), net (168) (93) (40) (412)
Income before income tax expense 1,242 1,081 4,426 3,280
Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 2,407 1,861 7,286 6,118
Transaction-based expenses 865 596 2,499 2,071
Total revenues, less transaction-based expenses 1,542 1,265 4,787 4,047
Other operating expenses 324 293 960 872
Depreciation and amortization 65 64 191 191
Acquisition-related transaction and integration costs 1 0 3 1
Total operating expenses 390 357 1,154 1,064
Operating income 1,152 908 3,633 2,983
Fixed Income and Data Services Segment        
Segment Reporting [Line Items]        
Total revenues 674 618 1,976 1,811
Transaction-based expenses 0 0 0 0
Total revenues, less transaction-based expenses 674 618 1,976 1,811
Other operating expenses 313 286 900 850
Depreciation and amortization 89 86 260 256
Acquisition-related transaction and integration costs 27 2 28 2
Total operating expenses 429 374 1,188 1,108
Operating income 245 244 788 703
Mortgage Technology Segment        
Segment Reporting [Line Items]        
Total revenues 549 528 1,645 1,569
Transaction-based expenses 0 0 0 0
Total revenues, less transaction-based expenses 549 528 1,645 1,569
Other operating expenses 270 262 808 791
Depreciation and amortization 245 237 721 724
Acquisition-related transaction and integration costs 21 7 71 48
Total operating expenses 536 506 1,600 1,563
Operating income 13 22 45 6
Energy futures and options        
Segment Reporting [Line Items]        
Total revenues 603 482 1,935 1,634
Energy futures and options | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 603 482 1,935 1,634
Energy futures and options | Fixed Income and Data Services Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Energy futures and options | Mortgage Technology Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Agricultural and metals futures and options        
Segment Reporting [Line Items]        
Total revenues 83 51 251 180
Agricultural and metals futures and options | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 83 51 251 180
Agricultural and metals futures and options | Fixed Income and Data Services Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Agricultural and metals futures and options | Mortgage Technology Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Financial futures and options        
Segment Reporting [Line Items]        
Total revenues 190 139 638 453
Financial futures and options | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 190 139 638 453
Financial futures and options | Fixed Income and Data Services Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Financial futures and options | Mortgage Technology Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Cash equities and equity options        
Segment Reporting [Line Items]        
Total revenues 997 701 2,894 2,418
Cash equities and equity options | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 997 701 2,894 2,418
Cash equities and equity options | Fixed Income and Data Services Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Cash equities and equity options | Mortgage Technology Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
OTC and other        
Segment Reporting [Line Items]        
Total revenues 112 99 325 298
OTC and other | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 112 99 325 298
OTC and other | Fixed Income and Data Services Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
OTC and other | Mortgage Technology Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Data and connectivity services        
Segment Reporting [Line Items]        
Total revenues 292 264 856 765
Data and connectivity services | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 292 264 856 765
Data and connectivity services | Fixed Income and Data Services Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Data and connectivity services | Mortgage Technology Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Listings        
Segment Reporting [Line Items]        
Total revenues 130 125 387 370
Listings | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 130 125 387 370
Listings | Fixed Income and Data Services Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Listings | Mortgage Technology Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Fixed income execution        
Segment Reporting [Line Items]        
Total revenues 34 33 96 96
Fixed income execution | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Fixed income execution | Fixed Income and Data Services Segment        
Segment Reporting [Line Items]        
Total revenues 34 33 96 96
Fixed income execution | Mortgage Technology Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
CDS clearing        
Segment Reporting [Line Items]        
Total revenues 102 90 297 266
CDS clearing | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
CDS clearing | Fixed Income and Data Services Segment        
Segment Reporting [Line Items]        
Total revenues 102 90 297 266
CDS clearing | Mortgage Technology Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Fixed income data and analytics        
Segment Reporting [Line Items]        
Total revenues 336 311 991 916
Fixed income data and analytics | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Fixed income data and analytics | Fixed Income and Data Services Segment        
Segment Reporting [Line Items]        
Total revenues 336 311 991 916
Fixed income data and analytics | Mortgage Technology Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Data and network technology        
Segment Reporting [Line Items]        
Total revenues 202 184 592 533
Data and network technology | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Data and network technology | Fixed Income and Data Services Segment        
Segment Reporting [Line Items]        
Total revenues 202 184 592 533
Data and network technology | Mortgage Technology Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Origination technology        
Segment Reporting [Line Items]        
Total revenues 189 188 578 550
Origination technology | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Origination technology | Fixed Income and Data Services Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Origination technology | Mortgage Technology Segment        
Segment Reporting [Line Items]        
Total revenues 189 188 578 550
Closing solutions        
Segment Reporting [Line Items]        
Total revenues 60 58 182 163
Closing solutions | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Closing solutions | Fixed Income and Data Services Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Closing solutions | Mortgage Technology Segment        
Segment Reporting [Line Items]        
Total revenues 60 58 182 163
Servicing software        
Segment Reporting [Line Items]        
Total revenues 229 216 677 657
Servicing software | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Servicing software | Fixed Income and Data Services Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Servicing software | Mortgage Technology Segment        
Segment Reporting [Line Items]        
Total revenues 229 216 677 657
Data and analytics        
Segment Reporting [Line Items]        
Total revenues 71 66 208 199
Data and analytics | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Data and analytics | Fixed Income and Data Services Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Data and analytics | Mortgage Technology Segment        
Segment Reporting [Line Items]        
Total revenues $ 71 $ 66 $ 208 $ 199