v3.26.1
ACQUISITIONS AND STRATEGIC REALIGNMENT - Schedule of Components of Assets and Liabilities Held for Sale (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Jun. 30, 2025
Assets held for sale:      
Restricted cash $ 6.1   $ 0.0
Total assets held for sale 261.0 $ 0.0  
Liabilities held for sale:      
Total liabilities held for sale 31.7 $ 0.0  
North American Equities      
Assets held for sale:      
Goodwill 60.9    
Intangible assets, net 44.7    
Europe and Asia Pacific      
Assets held for sale:      
Goodwill 30.7    
Intangible assets, net 30.4    
Disposal Group, Held-for-Sale, Not Discontinued Operations | Cboe Australia and Cboe Canada      
Assets held for sale:      
Cash and cash equivalents 70.3    
Accounts receivable, net 9.0    
Income taxes receivable 0.2    
Investments 0.2    
Property and equipment, net 2.0    
Goodwill 91.6    
Intangible assets, net 75.1    
Operating lease right of use assets 5.7    
Other current assets (includes restricted cash of $6100000) 6.9    
Total assets held for sale 261.0    
Liabilities held for sale:      
Accounts payable and accrued liabilities 12.1    
Deferred revenue 0.8    
Income tax payable 1.4    
Other current liabilities 0.1    
Deferred income taxes 12.4    
Non-current operating lease liabilities 4.9    
Total liabilities held for sale $ 31.7