GOODWILL, INTANGIBLE ASSETS, NET, AND DIGITAL ASSETS HELD - Additional information (Details) $ / shares in Units, $ in Millions	1 Months Ended		3 Months Ended		9 Months Ended
	May 31, 2024 USD ($)	Oct. 31, 2022 item $ / shares	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)
Intangible Assets
Revenues | $			$ 1,055.7	$ 908.8	$ 2,986.9	$ 2,804.8
Market data fees
Intangible Assets
Revenues | $			$ 73.5	$ 76.6	$ 219.2	$ 221.0
Data Provider Agreement with Pyth Data Association | Cboe NL
Intangible Assets
Number of U.S. equities exchanges publishing market data | item		1
Total number of U.S. equities exchanges | item		4
Number of token issued in a exchange or transaction | item		16,666,666
Term of restricted tokens issued (in years)		4 years
Percentage of tranche unlocked over a period for restricted tokens issued	25.00%
Historical value of tokens (in dollars per share) | $ / shares		$ 0.06
Data Provider Agreement with Pyth Data Association | Cboe NL | Market data fees
Intangible Assets
Revenues | $	$ 1.0