Deferred Revenue - Schedule of Changes in Deferred Revenue (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Disaggregation Of Revenue [Roll Forward] | ||
| Deferred revenue, beginning balance | $ 333 | $ 307 |
| Additions | 972 | 1,047 |
| Amortization | (1,013) | (1,021) |
| Deferred revenue, ending balance | 292 | 333 |
| Listing Revenues | ||
| Disaggregation Of Revenue [Roll Forward] | ||
| Deferred revenue, beginning balance | 119 | 108 |
| Additions | 495 | 500 |
| Amortization | (495) | (489) |
| Deferred revenue, ending balance | 119 | 119 |
| Data Services and Other Revenues | ||
| Disaggregation Of Revenue [Roll Forward] | ||
| Deferred revenue, beginning balance | 130 | 93 |
| Additions | 339 | 400 |
| Amortization | (368) | (363) |
| Deferred revenue, ending balance | 101 | 130 |
| Mortgage Technology | ||
| Disaggregation Of Revenue [Roll Forward] | ||
| Deferred revenue, beginning balance | 84 | 106 |
| Additions | 138 | 147 |
| Amortization | (150) | (169) |
| Deferred revenue, ending balance | $ 72 | $ 84 |