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COMMITMENTS, CONTINGENCIES, AND GUARANTEES (Details)
$ in Millions
6 Months Ended
Jun. 30, 2023
USD ($)
Software Development Activities | Cboe Canada  
Commitments, Contingencies and Guarantees  
Contractual obligations $ 1.5
Contractual obligation term 3 years
Minimum | Trading registrations and licenses  
Commitments, Contingencies and Guarantees  
Year 1 $ 15.0
Year 2 15.0
Year 3 15.0
Year 4 15.0
Year 5 15.0
Maximum | Trading registrations and licenses  
Commitments, Contingencies and Guarantees  
Year 1 16.0
Year 2 16.0
Year 3 16.0
Year 4 16.0
Year 5 $ 16.0