Deferred Revenue (Estimated Deferred Revenue) (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Fiscal Year Ended [Abstract] | ||
| 2026 | $ 755 | |
| 2027 | 201 | |
| 2028 | 31 | |
| 2029 | 19 | |
| 2030 | 9 | |
| 2031+ | 5 | |
| Total | 1,020 | $ 873 |
| Initial Listings | ||
| Fiscal Year Ended [Abstract] | ||
| 2026 | 22 | |
| 2027 | 33 | |
| 2028 | 21 | |
| 2029 | 13 | |
| 2030 | 9 | |
| 2031+ | 5 | |
| Total | 103 | 96 |
| Annual Listings | ||
| Fiscal Year Ended [Abstract] | ||
| 2026 | 200 | |
| 2027 | 0 | |
| 2028 | 0 | |
| 2029 | 0 | |
| 2030 | 0 | |
| 2031+ | 0 | |
| Total | 200 | 3 |
| Workflow & Insights | ||
| Fiscal Year Ended [Abstract] | ||
| 2026 | 156 | |
| 2027 | 52 | |
| 2028 | 0 | |
| 2029 | 0 | |
| 2030 | 0 | |
| 2031+ | 0 | |
| Total | 208 | 199 |
| Other | ||
| Fiscal Year Ended [Abstract] | ||
| 2026 | 11 | |
| 2027 | 8 | |
| 2028 | 5 | |
| 2029 | 3 | |
| 2030 | 0 | |
| 2031+ | 0 | |
| Total | 27 | 24 |
| Financial Crime Management Technology | ||
| Fiscal Year Ended [Abstract] | ||
| 2026 | 143 | |
| 2027 | 46 | |
| 2028 | 2 | |
| 2029 | 1 | |
| 2030 | 0 | |
| 2031+ | 0 | |
| Total | 192 | 189 |
| Regulatory Technology | ||
| Fiscal Year Ended [Abstract] | ||
| 2026 | 110 | |
| 2027 | 31 | |
| 2028 | 0 | |
| 2029 | 0 | |
| 2030 | 0 | |
| 2031+ | 0 | |
| Total | 141 | 166 |
| Capital Markets Technology | ||
| Fiscal Year Ended [Abstract] | ||
| 2026 | 113 | |
| 2027 | 31 | |
| 2028 | 3 | |
| 2029 | 2 | |
| 2030 | 0 | |
| 2031+ | 0 | |
| Total | $ 149 | $ 196 |