v3.26.1
Revenue Recognition - Schedule of Revenue Recognition (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Disaggregation of Revenue [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
Data services revenues        
Disaggregation of Revenue [Line Items]        
Total revenues 287 255 564 501
Services transferred at a point in time        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 1,157 1,133 2,603 2,209
Services transferred over time        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 1,509 1,410 3,040 2,807
Exchanges Segment        
Disaggregation of Revenue [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
Exchanges Segment | Data services revenues        
Disaggregation of Revenue [Line Items]        
Total revenues 287 255 564 501
Exchanges Segment | Net Interest Income        
Disaggregation of Revenue [Line Items]        
Total revenues   27   52
Revenue related to net interest income earned 38   66  
Exchanges Segment | Services transferred at a point in time        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 903 894 2,085 1,746
Exchanges Segment | Services transferred over time        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 561 521 1,160 1,036
Exchanges Segment | Services transferred over time | Data services revenues        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 287 255 564 501
Exchanges Segment | Services transferred over time | Services transferred over time related to risk management of open interest performance obligations        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 112 114 273 223
Exchanges Segment | Services transferred over time | Services transferred over time related to listings        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 129 123 257 245
Exchanges Segment | Services transferred over time | Services transferred over time related to regulatory fees, trading permits, and software licenses        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 33 29 66 67
Fixed Income and Data Services Segment        
Disaggregation of Revenue [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
Fixed Income and Data Services Segment | Data services revenues        
Disaggregation of Revenue [Line Items]        
Total revenues 0 0 0 0
Fixed Income and Data Services Segment | Net Interest Income        
Disaggregation of Revenue [Line Items]        
Total revenues   28   54
Revenue related to net interest income earned 28   54  
Fixed Income and Data Services Segment | Services transferred at a point in time        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 105 106 234 220
Fixed Income and Data Services Segment | Services transferred over time        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 540 491 1,068 973
Fixed Income and Data Services Segment | Services transferred over time | Services transferred over time related to risk management of open interest performance obligations        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 9 8 23 19
Fixed Income and Data Services Segment | Services transferred over time | Data services revenues        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 531 483 1,045 954
Mortgage Technology Segment        
Disaggregation of Revenue [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
Mortgage Technology Segment | Data services revenues        
Disaggregation of Revenue [Line Items]        
Total revenues 0 0 0 0
Mortgage Technology Segment | Services transferred at a point in time        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 149 133 284 243
Mortgage Technology Segment | Services transferred over time        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 408 398 812 798
Mortgage Technology Segment | Services transferred over time | Recurring revenues        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 406 395 807 792
Mortgage Technology Segment | Services transferred over time | Other        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses $ 2 $ 3 $ 5 $ 6