v3.26.1
Segment Reporting - Schedule of Segment Reporting Information (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting [Line Items]        
Total revenues $ 3,611 $ 3,262 $ 7,277 $ 6,491
Transaction-based expenses 945 719 1,634 1,475
Total revenues, less transaction-based expenses 2,666 2,543 5,643 5,016
Other operating expenses 874 841 1,761 1,672
Depreciation and amortization 389 395 773 784
Acquisition-related transaction and integration costs 12 10 53 42
Total operating expenses 1,275 1,246 2,587 2,498
Operating income 1,391 1,297 3,056 2,518
Total other income/(expense), net (104) (165) 128 (319)
Income before income tax expense 1,287 1,132 3,184 2,199
Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 2,409 2,134 4,879 4,257
Transaction-based expenses 945 719 1,634 1,475
Total revenues, less transaction-based expenses 1,464 1,415 3,245 2,782
Other operating expenses 321 289 636 579
Depreciation and amortization 64 64 126 127
Acquisition-related transaction and integration costs 1 0 2 1
Total operating expenses 386 353 764 707
Operating income 1,078 1,062 2,481 2,075
Fixed Income and Data Services Segment        
Segment Reporting [Line Items]        
Total revenues 645 597 1,302 1,193
Transaction-based expenses 0 0 0 0
Total revenues, less transaction-based expenses 645 597 1,302 1,193
Other operating expenses 289 287 587 564
Depreciation and amortization 87 86 171 170
Acquisition-related transaction and integration costs 1 0 1 0
Total operating expenses 377 373 759 734
Operating income 268 224 543 459
Mortgage Technology Segment        
Segment Reporting [Line Items]        
Total revenues 557 531 1,096 1,041
Transaction-based expenses 0 0 0 0
Total revenues, less transaction-based expenses 557 531 1,096 1,041
Other operating expenses 264 265 538 529
Depreciation and amortization 238 245 476 487
Acquisition-related transaction and integration costs 10 10 50 41
Total operating expenses 512 520 1,064 1,057
Operating income 45 11 32 (16)
Energy futures and options        
Segment Reporting [Line Items]        
Total revenues 518 595 1,332 1,152
Energy futures and options | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 518 595 1,332 1,152
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 87 65 168 129
Agricultural and metals futures and options | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 87 65 168 129
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 192 158 448 314
Financial futures and options | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 192 158 448 314
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 1,085 842 1,897 1,717
Cash equities and equity options | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 1,085 842 1,897 1,717
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 111 96 213 199
OTC and other | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 111 96 213 199
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 287 255 564 501
Data and connectivity services | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 287 255 564 501
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 129 123 257 245
Listings | Exchanges Segment        
Segment Reporting [Line Items]        
Total revenues 129 123 257 245
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 31 32 62 63
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 31 32 62 63
Fixed income execution | Mortgage Technology Segment        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
CDS clearing        
Segment Reporting [Line Items]        
Total revenues 83 82 195 176
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 83 82 195 176
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 333 306 655 605
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 333 306 655 605
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 198 177 390 349
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 198 177 390 349
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 197 187 389 362
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 197 187 389 362
Closing solutions        
Segment Reporting [Line Items]        
Total revenues 65 58 122 105
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 65 58 122 105
Servicing software        
Segment Reporting [Line Items]        
Total revenues 226 220 448 441
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 226 220 448 441
Data and analytics        
Segment Reporting [Line Items]        
Total revenues 69 66 137 133
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 $ 69 $ 66 $ 137 $ 133