REGULATORY CAPITAL - Narrative (Details)	Sep. 30, 2024 USD ($) Test
Cboe Trading and BIDS Trading
Regulatory Capital Requirement [Line Items]
Minimum net capital required to be maintained (in percent)	6.67%
Minimum net capital required to be maintained, amount | $	$ 100,000
Cboe Fixed Income
Regulatory Capital Requirement [Line Items]
Minimum net capital required to be maintained (in percent)	6.67%
Minimum net capital required to be maintained, amount | $	$ 5,000.0
Cboe Chi-X Europe
Regulatory Capital Requirement [Line Items]
Capital resources requirement | $	$ 100,000
CFE
Regulatory Capital Requirement [Line Items]
Number of capital adequacy tests required to be met	2
Cboe SEF
Regulatory Capital Requirement [Line Items]
Number of capital adequacy tests required to be met	2
Cboe Digital Exchange
Regulatory Capital Requirement [Line Items]
Number of capital adequacy tests required to be met	2
Cboe Clear Digital
Regulatory Capital Requirement [Line Items]
Number of capital adequacy tests required to be met	2
Cboe Japan
Regulatory Capital Requirement [Line Items]
Minimum required regulatory capital ratio (as a percent)	120.00%