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REGULATORY CAPITAL - Subsidiaries with Regulatory Capital Requirements (Details) $ in Millions | Mar. 31, 2025 USD ($)
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Cboe Trading |
Regulatory Capital Requirement [Line Items] |
Actual | $ 11.0
Minimum Requirement | 1.1
BIDS Trading |
Regulatory Capital Requirement [Line Items] |
Actual | 5.7
Minimum Requirement | 0.2
Cboe Fixed Income |
Regulatory Capital Requirement [Line Items] |
Actual | 4.0
Minimum Requirement | 0.1
Cboe Europe |
Regulatory Capital Requirement [Line Items] |
Actual | 67.1
Minimum Requirement | 33.6
Cboe Chi-X Europe |
Regulatory Capital Requirement [Line Items] |
Actual | 0.3
Minimum Requirement | 0.1
Cboe NL |
Regulatory Capital Requirement [Line Items] |
Actual | 14.2
Minimum Requirement | 8.7
Cboe Clear Europe |
Regulatory Capital Requirement [Line Items] |
Actual | 104.1
Minimum Requirement | 63.0
CFE |
Regulatory Capital Requirement [Line Items] |
Actual | 62.6
Minimum Requirement | 42.6
Cboe SEF |
Regulatory Capital Requirement [Line Items] |
Actual | 3.8
Minimum Requirement | 2.4
Cboe Digital Exchange |
Regulatory Capital Requirement [Line Items] |
Actual | 30.5
Minimum Requirement | 1.1
Cboe Clear U.S. |
Regulatory Capital Requirement [Line Items] |
Actual | 31.3
Minimum Requirement | 11.9
Cboe Australia |
Regulatory Capital Requirement [Line Items] |
Actual | 15.4
Minimum Requirement | 5.0
Cboe Japan |
Regulatory Capital Requirement [Line Items] |
Actual | 10.5
Minimum Requirement | $ 4.7

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