Deferred Revenue - Schedule of Changes in Deferred Revenue (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Disaggregation Of Revenue [Roll Forward] | ||
| Beginning balance | $ 333 | $ 307 |
| Additions | 638 | 653 |
| Amortization | (268) | (260) |
| Ending balance | 703 | 700 |
| Listings Revenues | ||
| Disaggregation Of Revenue [Roll Forward] | ||
| Beginning balance | 119 | 108 |
| Additions | 461 | 460 |
| Amortization | (122) | (122) |
| Ending balance | 458 | 446 |
| Data Services and Other Revenues | ||
| Disaggregation Of Revenue [Roll Forward] | ||
| Beginning balance | 130 | 93 |
| Additions | 139 | 161 |
| Amortization | (100) | (99) |
| Ending balance | 169 | 155 |
| Mortgage technology | ||
| Disaggregation Of Revenue [Roll Forward] | ||
| Beginning balance | 84 | 106 |
| Additions | 38 | 32 |
| Amortization | (46) | (39) |
| Ending balance | $ 76 | $ 99 |