Equity - Redeemable Noncontrolling Interests (Details) |
3 Months Ended |
|---|---|
Mar. 31, 2026 | |
| Noncontrolling Interest [Line Items] | |
| Minimum interest in joint venture (as a percent) | 20.00% |
| Agreement terms, change of control, put option for minority interest ownership, effective period | 15 days |
| CME Group | |
| Noncontrolling Interest [Line Items] | |
| Noncontrolling interest ownership by noncontrolling owners (as a percent) | 27.00% |