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GOODWILL, INTANGIBLE ASSETS, NET, AND DIGITAL ASSETS HELD - Additional Information (Details) | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
May 31, 2025 | May 31, 2024 USD ($) | Oct. 31, 2022 item $ / shares | Sep. 30, 2025 USD ($) item | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) item | Sep. 30, 2024 USD ($)
Intangible Assets |  |  |  |  |  |  |
Impairment of indefinite-lived intangible assets |  |  |  |  |  | $ 1,800,000 |
Impairment of intangible assets |  |  |  |  |  | 18,900,000 |
Revenues |  |  |  | $ 1,141,700,000 | $ 1,055,700,000 | 3,510,200,000 | $ 2,986,900,000
Revenues less cost of revenues: |  |  |  | 605,500,000 | 532,000,000.0 | 1,758,000,000 | 1,547,900,000
Digital |  |  |  |  |  |  |
Intangible Assets |  |  |  |  |  |  |
Impairment of finite-lived intangible assets |  |  |  |  | 81,000,000.0 |  | 81,000,000.0
Europe and Asia Pacific |  |  |  |  |  |  |
Intangible Assets |  |  |  |  |  |  |
Impairment of intangible assets |  |  |  |  |  | 18,900,000 |
Customer relationships |  |  |  |  |  |  |
Intangible Assets |  |  |  |  |  |  |
Impairment of finite-lived intangible assets |  |  |  | 17,100,000 |  | 17,100,000 |
Market data fees |  |  |  |  |  |  |
Intangible Assets |  |  |  |  |  |  |
Revenues |  |  |  | $ 83,700,000 | $ 73,500,000 | $ 243,900,000 | $ 219,200,000
Data Provider Agreement with Pyth Data Association | Cboe Netherlands Services Company B.V |  |  |  |  |  |  |
Intangible Assets |  |  |  |  |  |  |
Number of token issued in a exchange or transaction | item |  |  | 16,666,666 |  |  | 790,000 |
Term of restricted tokens issued (in years) |  |  | 4 years |  |  |  |
Percentage of tranche unlocked over a period for restricted tokens issued | 25.00% | 25.00% |  |  |  |  |
Historical value of tokens (in dollars per share) | $ / shares |  |  | $ 0.06 |  |  |  |
Number of tokens sold | item |  |  |  | 4,300,000 |  | 8,500,000 |
Recognized gain on sale of tokens |  |  |  | $ 400,000 |  | $ 1,000,000.0 |
Data Provider Agreement with Pyth Data Association | Cboe Netherlands Services Company B.V | Market data fees |  |  |  |  |  |  |
Intangible Assets |  |  |  |  |  |  |
Revenues |  | $ 1,000,000.0 |  |  |  |  |

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