Deferred Revenue (Estimated Deferred Revenue) (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Fiscal Year Ended [Abstract] | ||
| 2026 | $ 428 | |
| 2027 | 406 | |
| 2028 | 37 | |
| 2029 | 22 | |
| 2030 | 11 | |
| 2031+ | 6 | |
| Total | 910 | $ 873 |
| Initial Listings | ||
| Fiscal Year Ended [Abstract] | ||
| 2026 | 11 | |
| 2027 | 36 | |
| 2028 | 24 | |
| 2029 | 15 | |
| 2030 | 10 | |
| 2031+ | 6 | |
| Total | 102 | 96 |
| Annual Listings | ||
| Fiscal Year Ended [Abstract] | ||
| 2026 | 102 | |
| 2027 | 0 | |
| 2028 | 0 | |
| 2029 | 0 | |
| 2030 | 0 | |
| 2031+ | 0 | |
| Total | 102 | 3 |
| Workflow & Insights | ||
| Fiscal Year Ended [Abstract] | ||
| 2026 | 95 | |
| 2027 | 112 | |
| 2028 | 0 | |
| 2029 | 0 | |
| 2030 | 0 | |
| 2031+ | 0 | |
| Total | 207 | 199 |
| Other | ||
| Fiscal Year Ended [Abstract] | ||
| 2026 | 6 | |
| 2027 | 9 | |
| 2028 | 5 | |
| 2029 | 3 | |
| 2030 | 1 | |
| 2031+ | 0 | |
| Total | 24 | 24 |
| Financial Crime Management Technology | ||
| Fiscal Year Ended [Abstract] | ||
| 2026 | 84 | |
| 2027 | 100 | |
| 2028 | 3 | |
| 2029 | 1 | |
| 2030 | 0 | |
| 2031+ | 0 | |
| Total | 188 | 189 |
| Regulatory Technology | ||
| Fiscal Year Ended [Abstract] | ||
| 2026 | 67 | |
| 2027 | 90 | |
| 2028 | 1 | |
| 2029 | 1 | |
| 2030 | 0 | |
| 2031+ | 0 | |
| Total | 159 | 166 |
| Capital Markets Technology | ||
| Fiscal Year Ended [Abstract] | ||
| 2026 | 63 | |
| 2027 | 59 | |
| 2028 | 4 | |
| 2029 | 2 | |
| 2030 | 0 | |
| 2031+ | 0 | |
| Total | $ 128 | $ 196 |