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CLEARING OPERATIONS - Narrative (Details) - Cboe Clear Europe Credit Facility	1 Months Ended	6 Months Ended
	Sep. 30, 2021 item	Jun. 30, 2023 Counterparty item
Clearing Operations
Number of European markets | item	10	18
Number of central counterparties with whom interoperable agreements are held | Counterparty		2
Default and liquid waterfalls regulatory capital		35.00%
Number of forms utilized for default waterfalls		2
Scenario One
Clearing Operations
Default and liquid waterfalls regulatory capital		25.00%
Scenario Two | Maximum
Clearing Operations
Default and liquid waterfalls regulatory capital		25.00%
Scenario Two | Minimum
Clearing Operations
Default and liquid waterfalls regulatory capital		10.00%

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

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- Definition

The percent of own regulatory capital is used for clearing the default and liquid waterfalls participants.

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- Definition

Represents the number of other central counterparties with whom interoperable arrangements are made.

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- Definition

Represents the number of european markets in which equity is cleared.

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- Definition

Number of forms of utilization of default and liquidity waterfalls.

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