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CLEARING OPERATIONS - Narrative (Details) $ in Millions | 1 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 market | Jun. 30, 2025 USD ($) market item Counterparty form | Dec. 31, 2024 USD ($)
Clearing Operations |  |  |
Number of clearing houses operated | item |  | 2 |
Number of European markets | market | 10 | 18 |
Restricted cash, current |  | $ 30.2 | $ 0.0
Cboe Clear Europe Credit Facility |  |  |
Clearing Operations |  |  |
Number of central counterparties with whom interoperable agreements are held | Counterparty |  | 2 |
Number of forms utilized for default waterfalls | form |  | 2 |
Default and liquidity waterfalls regulatory capital, scenario one |  | 25.00% |
Cboe Clear Europe Credit Facility | Minimum |  |  |
Clearing Operations |  |  |
Default and liquidity waterfalls regulatory capital |  | 35.00% |
Default and liquidity waterfalls regulatory capital, scenario two |  | 10.00% |
Cboe Clear Europe Credit Facility | Maximum |  |  |
Clearing Operations |  |  |
Default and liquidity waterfalls regulatory capital |  | 50.00% |
Default and liquidity waterfalls regulatory capital, scenario two |  | 25.00% |
Cboe Clear U.S. |  |  |
Clearing Operations |  |  |
Restricted cash, current |  | $ 25.0 |

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