v3.26.3
Revenue Recognition - Schedule of Revenue Recognition (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Disaggregation of Revenue [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
Data services revenues        
Disaggregation of Revenue [Line Items]        
Total revenues 292 264 856 765
Services transferred at a point in time        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 1,232 993 3,835 3,202
Services transferred over time        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 1,533 1,418 4,573 4,225
Exchanges Segment        
Disaggregation of Revenue [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
Exchanges Segment | Data services revenues        
Disaggregation of Revenue [Line Items]        
Total revenues 292 264 856 765
Exchanges Segment | Net Interest Income        
Disaggregation of Revenue [Line Items]        
Total revenues   24   76
Revenue related to net interest income earned 38   104  
Exchanges Segment | Services transferred at a point in time        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 967 748 3,052 2,494
Exchanges Segment | Services transferred over time        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 575 517 1,735 1,553
Exchanges Segment | Services transferred over time | Data services revenues        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 292 264 856 765
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 122 94 395 317
Exchanges Segment | Services transferred over time | Services transferred over time related to listings        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 130 125 387 370
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 31 34 97 101
Fixed Income and Data Services Segment        
Disaggregation of Revenue [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
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   82
Revenue related to net interest income earned 28   82  
Fixed Income and Data Services Segment | Services transferred at a point in time        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 124 112 358 332
Fixed Income and Data Services Segment | Services transferred over time        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 550 506 1,618 1,479
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 12 11 35 30
Fixed Income and Data Services Segment | Services transferred over time | Data services revenues        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 538 495 1,583 1,449
Mortgage Technology Segment        
Disaggregation of Revenue [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
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 141 133 425 376
Mortgage Technology Segment | Services transferred over time        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 408 395 1,220 1,193
Mortgage Technology Segment | Services transferred over time | Recurring revenues        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses 405 391 1,212 1,183
Mortgage Technology Segment | Services transferred over time | Other        
Disaggregation of Revenue [Line Items]        
Total revenues, less transaction-based expenses $ 3 $ 4 $ 8 $ 10