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REGULATORY CAPITAL - Subsidiaries with Regulatory Capital Requirements (Details) $ in Millions | Sep. 30, 2024 USD ($)
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Cboe Trading |
Regulatory Capital Requirement [Line Items] |
Actual | $ 11.3
Minimum Requirement | 1.0
BIDS Trading |
Regulatory Capital Requirement [Line Items] |
Actual | 10.1
Minimum Requirement | 0.4
Cboe Fixed Income |
Regulatory Capital Requirement [Line Items] |
Actual | 4.9
Minimum Requirement | 0.1
Cboe Europe |
Regulatory Capital Requirement [Line Items] |
Actual | 67.5
Minimum Requirement | 34.7
Cboe Chi-X Europe |
Regulatory Capital Requirement [Line Items] |
Actual | 0.1
Minimum Requirement | 0.1
Cboe NL |
Regulatory Capital Requirement [Line Items] |
Actual | 16.7
Minimum Requirement | 7.9
Cboe Clear Europe |
Regulatory Capital Requirement [Line Items] |
Actual | 89.1
Minimum Requirement | 62.8
CFE |
Regulatory Capital Requirement [Line Items] |
Actual | 60.5
Minimum Requirement | 41.2
Cboe SEF |
Regulatory Capital Requirement [Line Items] |
Actual | 2.7
Minimum Requirement | 2.0
Cboe Digital Exchange |
Regulatory Capital Requirement [Line Items] |
Actual | 33.6
Minimum Requirement | 6.1
Cboe Clear Digital |
Regulatory Capital Requirement [Line Items] |
Actual | 31.0
Minimum Requirement | 6.4
Cboe Australia |
Regulatory Capital Requirement [Line Items] |
Actual | 19.2
Minimum Requirement | 5.4
Cboe Japan |
Regulatory Capital Requirement [Line Items] |
Actual | 11.4
Minimum Requirement | $ 5.0

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