LEASES - Others (Details) $ in Millions	3 Months Ended
Mar. 31, 2020 USD ($)
LEASES
Minimum lease payments related to option to extend term	$ 20.4
Minimum lease payments for leases will commence after March 31, 2020	$ 17.1

The amount of lessee operating lease liability payments with option to extend term.

No definition available.

Name:	cboe_LesseeOperatingLeaseLiabilityPaymentsWithOptionToExtendTerm
Namespace Prefix:	cboe_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant