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REGULATORY CAPITAL - Subsidiaries with Regulatory Capital Requirements (Details) $ in Millions | Jun. 30, 2025 USD ($)
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Cboe Trading |
Regulatory Capital Requirement [Line Items] |
Actual | $ 13.4
Minimum Requirement | 1.0
BIDS Trading |
Regulatory Capital Requirement [Line Items] |
Actual | 6.2
Minimum Requirement | 0.2
Cboe Fixed Income |
Regulatory Capital Requirement [Line Items] |
Actual | 3.6
Minimum Requirement | 0.1
Cboe Europe |
Regulatory Capital Requirement [Line Items] |
Actual | 100.3
Minimum Requirement | 37.3
Cboe Chi-X Europe |
Regulatory Capital Requirement [Line Items] |
Actual | 0.3
Minimum Requirement | 0.1
Cboe NL |
Regulatory Capital Requirement [Line Items] |
Actual | 17.8
Minimum Requirement | 9.9
Cboe Clear Europe |
Regulatory Capital Requirement [Line Items] |
Actual | 125.7
Minimum Requirement | 77.9
CFE |
Regulatory Capital Requirement [Line Items] |
Actual | 58.6
Minimum Requirement | 42.3
Cboe SEF |
Regulatory Capital Requirement [Line Items] |
Actual | 4.4
Minimum Requirement | 2.5
Cboe Digital Exchange |
Regulatory Capital Requirement [Line Items] |
Actual | 27.0
Minimum Requirement | 0.2
Cboe Clear U.S. |
Regulatory Capital Requirement [Line Items] |
Actual | 38.6
Minimum Requirement | 12.0
Cboe Australia |
Regulatory Capital Requirement [Line Items] |
Actual | 14.9
Minimum Requirement | 5.2
Cboe Japan |
Regulatory Capital Requirement [Line Items] |
Actual | 11.2
Minimum Requirement | $ 4.6

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