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INCOME TAXES (Details) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2023 case	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 case	Jun. 30, 2022 USD ($)	Nov. 29, 2018 case
Effective income tax rate	30.60%		28.20%	30.40%	(134.80%)
Goodwill impairment			$ 460.1		$ 460.1
Number of cases before the U.S. Tax Court | case	2			2		3
Cboe Digital
Goodwill impairment		$ 0.8	$ 460.1

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The number of cases before the U.S. Tax Court.

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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