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Segment Reporting - Schedule of Segment Reporting Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | $ 3,262 | $ 2,897 | $ 6,491 | $ 5,698
Transaction-based expenses | 719 | 580 | 1,475 | 1,091
Total revenues, less transaction-based expenses | 2,543 | 2,317 | 5,016 | 4,607
Other Expenses | 841 | 855 | 1,672 | 1,665
Depreciation and amortization | 395 | 381 | 784 | 762
Acquisition-related transaction and integration costs | 10 | 15 | 42 | 51
Total operating expenses | 1,246 | 1,251 | 2,498 | 2,478
Operating income/(loss) | 1,297 | 1,066 | 2,518 | 2,129
Nonoperating Income (Expense) | (165) | (205) | (319) | (304)
Income before income tax expense | 1,132 | 861 | 2,199 | 1,825
Exchanges Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 2,134 | 1,826 | 4,257 | 3,560
Transaction-based expenses | 719 | 580 | 1,475 | 1,091
Total revenues, less transaction-based expenses | 1,415 | 1,246 | 2,782 | 2,469
Other Expenses | 289 | 294 | 579 | 550
Depreciation and amortization | 64 | 62 | 127 | 132
Acquisition-related transaction and integration costs | 0 | 0 | 1 | 0
Total operating expenses | 353 | 356 | 707 | 682
Operating income/(loss) | 1,062 | 890 | 2,075 | 1,787
Fixed Income and Data Services Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 597 | 565 | 1,193 | 1,133
Transaction-based expenses | 0 | 0 | 0 | 0
Total revenues, less transaction-based expenses | 597 | 565 | 1,193 | 1,133
Other Expenses | 287 | 276 | 564 | 550
Depreciation and amortization | 86 | 81 | 170 | 161
Acquisition-related transaction and integration costs | 0 | 0 | 0 | 0
Total operating expenses | 373 | 357 | 734 | 711
Operating income/(loss) | 224 | 208 | 459 | 422
Mortgage Technology Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 531 | 506 | 1,041 | 1,005
Transaction-based expenses | 0 | 0 | 0 | 0
Total revenues, less transaction-based expenses | 531 | 506 | 1,041 | 1,005
Other Expenses | 265 | 285 | 529 | 565
Depreciation and amortization | 245 | 238 | 487 | 469
Acquisition-related transaction and integration costs | 10 | 15 | 41 | 51
Total operating expenses | 520 | 538 | 1,057 | 1,085
Operating income/(loss) | 11 | (32) | (16) | (80)
Energy futures and options |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 595 | 469 | 1,152 | 926
Energy futures and options | Exchanges Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 595 | 469 | 1,152 | 926
Energy futures and options | Fixed Income and Data Services Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Energy futures and options | Mortgage Technology Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Agricultural and metals futures and options |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 65 | 71 | 129 | 143
Agricultural and metals futures and options | Exchanges Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 65 | 71 | 129 | 143
Agricultural and metals futures and options | Fixed Income and Data Services Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Agricultural and metals futures and options | Mortgage Technology Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Financial futures and options |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 158 | 132 | 314 | 267
Financial futures and options | Exchanges Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 158 | 132 | 314 | 267
Financial futures and options | Fixed Income and Data Services Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Financial futures and options | Mortgage Technology Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Cash equities and equity options |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 842 | 691 | 1,717 | 1,301
Cash equities and equity options | Exchanges Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 842 | 691 | 1,717 | 1,301
Cash equities and equity options | Fixed Income and Data Services Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Cash equities and equity options | Mortgage Technology Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
OTC and other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 96 | 101 | 199 | 204
OTC and other | Exchanges Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 96 | 101 | 199 | 204
OTC and other | Fixed Income and Data Services Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
OTC and other | Mortgage Technology Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Data and connectivity services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 255 | 240 | 501 | 475
Data and connectivity services | Exchanges Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 255 | 240 | 501 | 475
Data and connectivity services | Fixed Income and Data Services Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Data and connectivity services | Mortgage Technology Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Listings |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 123 | 122 | 245 | 244
Listings | Exchanges Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 123 | 122 | 245 | 244
Listings | Fixed Income and Data Services Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Listings | Mortgage Technology Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Fixed income execution |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 32 | 30 | 63 | 56
Fixed income execution | Exchanges Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Fixed income execution | Fixed Income and Data Services Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 32 | 30 | 63 | 56
Fixed income execution | Mortgage Technology Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
CDS clearing |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 82 | 78 | 176 | 171
CDS clearing | Exchanges Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
CDS clearing | Fixed Income and Data Services Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 82 | 78 | 176 | 171
CDS clearing | Mortgage Technology Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Fixed income data and analytics |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 306 | 293 | 605 | 581
Fixed income data and analytics | Exchanges Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Fixed income data and analytics | Fixed Income and Data Services Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 306 | 293 | 605 | 581
Fixed income data and analytics | Mortgage Technology Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Data and network technology |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 177 | 164 | 349 | 325
Data and network technology | Exchanges Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Data and network technology | Fixed Income and Data Services Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 177 | 164 | 349 | 325
Data and network technology | Mortgage Technology Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Origination technology |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 187 | 180 | 362 | 354
Origination technology | Exchanges Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Origination technology | Fixed Income and Data Services Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Origination technology | Mortgage Technology Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 187 | 180 | 362 | 354
Closing solutions |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 58 | 52 | 105 | 96
Closing solutions | Exchanges Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Closing solutions | Fixed Income and Data Services Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Closing solutions | Mortgage Technology Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 58 | 52 | 105 | 96
Servicing software |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 220 | 212 | 441 | 426
Servicing software | Exchanges Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Servicing software | Fixed Income and Data Services Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Servicing software | Mortgage Technology Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 220 | 212 | 441 | 426
Data and analytics |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 66 | 62 | 133 | 129
Data and analytics | Exchanges Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Data and analytics | Fixed Income and Data Services Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Data and analytics | Mortgage Technology Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | $ 66 | $ 62 | $ 133 | $ 129

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