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FAIR VALUE MEASUREMENT - Narrative (Details) $ in Millions		3 Months Ended	9 Months Ended
	Nov. 18, 2022	Sep. 30, 2023 USD ($) item shares	Sep. 30, 2023 USD ($) item shares	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Segment Reporting Information
Contingent consideration liabilities		$ 28.2	$ 28.2		$ 39.1
Payment of contingent consideration liabilities			$ 10.9	$ 33.2
Restricted common units recognized contra revenue period	5 years
Number of other digital asset exchanges used to assess Cboe Digital asset pricing reasonableness | item		3	3
Cboe Digital Incentive Program Units
Segment Reporting Information
Term of incentive program			2 years
Cboe Digital Incentive Program Units | Maximum
Segment Reporting Information
Common units authorized | shares		20	20
Cboe Asia Pacific and Cboe Canada
Segment Reporting Information
Contingent consideration liabilities		$ 28.2	$ 28.2
Cboe Asia Pacific
Segment Reporting Information
Payment of contingent consideration liabilities		10.9
Recurring
Segment Reporting Information
Contingent consideration liabilities		$ 28.2	$ 28.2		$ 39.1

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 30
-Name Accounting Standards Codification
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-Paragraph 1
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Amount of cash outflow, not made soon after acquisition date of business combination, to settle contingent consideration liability up to amount recognized at acquisition date, including, but not limited to, measurement period adjustment and less amount paid soon after acquisition date.

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