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STOCK-BASED COMPENSATION - Cboe Digital Restricted Common Units And Cboe Digital Warrants (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Mar. 31, 2023 | Nov. 18, 2022 | Mar. 31, 2023 | Dec. 31, 2022
Cboe Digital Restricted Common Units |  |  |  |
Stock-based Compensation |  |  |  |
Interest rate (as a percent) |  | 5.00% |  |
Adjustment to contra-revenue balance | $0.1 |  |  |
Contra-revenue recognized |  |  | $0.8 |
Contra-revenue is expected to be recognized | $ 13.3 |  | $ 13.3 | $ 14.0
Change in fair value of option |  |  | $ 0.0 |
Vesting period |  | 5 years |  |
Risk-free interest rate, minimum |  |  |  | 3.88%
Risk-free interest rate, Maximum |  |  |  | 3.95%
Expected dividend rate |  |  |  | 0.00%
Expected volatility |  |  |  | 60.00%
Number of shares |  |  |  |
Beginning balance (in shares) |  |  | 185 |
Granted (in shares) |  | 185 |  |
Ending balance of Outstanding and exercisable (in shares) | 185 |  | 185 | 185
Weighted average grant date fair value |  |  |  |
Beginning balance (in USD per share) |  |  | $ 0.3 |
Ending balance of Outstanding and exercisable (in USD per share) | $ 0.3 |  | $ 0.3 | $ 0.3
Weighted average remaining contractual term of Outstanding and exercisable (in years) |  |  | 6 years | 6 years
Cboe Digital Restricted Common Units | Minimum |  |  |  |
Stock-based Compensation |  |  |  |
Expected term (in years) |  |  |  | 5 years
Cboe Digital Restricted Common Units | Maximum |  |  |  |
Stock-based Compensation |  |  |  |
Expected term (in years) |  |  |  | 7 years
Cboe Digital Warrants |  |  |  |
Stock-based Compensation |  |  |  |
Contra-revenue recognized |  |  | $0.3 |
Contra-revenue is expected to be recognized | $ 5.6 |  | $ 5.6 |
Number of units called by warrants |  | 80 |  |
Warrants vested (in shares) |  | 0 |  |
Change in fair value of warrants |  |  | $ 0.0 |
Vesting period |  | 2 years |  |
Risk-free interest rate |  |  |  | 3.95%
Expected dividend rate |  |  |  | 0.00%
Expected volatility |  |  |  | 60.00%
Expected term (in years) |  |  |  | 5 years
Number of shares |  |  |  |
Beginning balance (in shares) |  |  | 80 |
Ending balance of Outstanding and exercisable (in shares) | 80 |  | 80 | 80
Weighted average grant date fair value |  |  |  |
Beginning balance (in USD per share) |  |  | $ 0.2 |
Ending balance of Outstanding and exercisable (in USD per share) | $ 0.2 |  | $ 0.2 | $ 0.2

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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644 + Details
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- Definition Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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