FAIR VALUE MEASUREMENT - Narrative (Details) - USD ($) $ in Millions |
1 Months Ended | 3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|---|
Jun. 30, 2024 |
May 31, 2024 |
Jun. 30, 2024 |
Jun. 30, 2023 |
Jun. 30, 2024 |
Jun. 30, 2023 |
Dec. 31, 2023 |
|
| Segment Reporting Information | |||||||
| Contingent consideration liabilities | $ 1.8 | $ 1.8 | $ 1.8 | $ 11.8 | |||
| Other (expense) income, net | (13.1) | $ 1.6 | (8.5) | $ 1.7 | |||
| Loss on settlement of contingent consideration | 3.0 | ||||||
| Cboe Digital Restricted Common Units | |||||||
| Segment Reporting Information | |||||||
| Other (expense) income, net | (0.3) | ||||||
| Cboe Asia Pacific | |||||||
| Segment Reporting Information | |||||||
| Payment of contingent consideration | 10.0 | ||||||
| Loss on settlement of contingent consideration | (2.7) | 3.0 | |||||
| Cboe Canada | |||||||
| Segment Reporting Information | |||||||
| Contingent consideration liabilities | 1.8 | 1.8 | 1.8 | ||||
| Cboe Japan | |||||||
| Segment Reporting Information | |||||||
| Payment of contingent consideration | $ 5.7 | ||||||
| Recurring | |||||||
| Segment Reporting Information | |||||||
| Contingent consideration liabilities | $ 1.8 | $ 1.8 | $ 1.8 | $ 11.8 | |||