COMMITMENTS, CONTINGENCIES, AND GUARANTEES (Details) - USD ($) $ in Millions |
6 Months Ended | |
|---|---|---|
Jun. 30, 2024 |
Jan. 29, 2024 |
|
| Trading registrations and licenses | Minimum | ||
| Commitments, Contingencies and Guarantees | ||
| Year 1 | $ 17.1 | |
| Year 2 | 17.1 | |
| Year 3 | 17.1 | |
| Year 4 | 17.1 | |
| Year 5 | 17.1 | |
| Trading registrations and licenses | Maximum | ||
| Commitments, Contingencies and Guarantees | ||
| Year 1 | 18.1 | |
| Year 2 | 18.1 | |
| Year 3 | 18.1 | |
| Year 4 | 18.1 | |
| Year 5 | 18.1 | |
| Trading registrations and licenses | Cloud services provider | Minimum | ||
| Commitments, Contingencies and Guarantees | ||
| Year 1 | $ 5.3 | |
| Year 2 | 5.3 | |
| Year 3 | 5.3 | |
| Year 4 | 5.3 | |
| Year 5 | 5.3 | |
| Trading registrations and licenses | Cloud services provider | Maximum | ||
| Commitments, Contingencies and Guarantees | ||
| Year 1 | 6.9 | |
| Year 2 | 6.9 | |
| Year 3 | 6.9 | |
| Year 4 | 6.9 | |
| Year 5 | $ 6.9 | |
| Software Development Activities | Cboe Canada | ||
| Commitments, Contingencies and Guarantees | ||
| Contractual obligations | $ 0.8 | |
| Contractual obligation term | 3 years |