REGULATORY CAPITAL (Details)	Sep. 30, 2022 USD ($) Test
Cboe Trading
Regulatory Requirement
Capital	$ 10,100,000
Minimum Requirement	1,200,000
BIDS Trading
Regulatory Requirement
Capital	7,900,000
Minimum Requirement	$ 200,000
Cboe Fixed Income Markets
Regulatory Requirement
Minimum net capital required to be maintained, option 1 - percentage of aggregate indebtedness items	12.50%
Minimum net capital required to be maintained, option 2 - amount	$ 5,000.0
Capital	4,800,000
Minimum Requirement	400,000
Cboe Europe
Regulatory Requirement
Capital	44,600,000
Minimum Requirement	25,500,000
Cboe Chi-X Europe
Regulatory Requirement
Capital	200,000
Minimum Requirement	100,000
Capital resources requirement	100,000
Cboe NL
Regulatory Requirement
Capital	9,500,000
Minimum Requirement	5,500,000
EuroCCP
Regulatory Requirement
Capital	56,000,000.0
Minimum Requirement	36,200,000
MATCHNow
Regulatory Requirement
Capital	4,200,000
Minimum Requirement	200,000
CFE
Regulatory Requirement
Capital	60,300,000
Minimum Requirement	$ 48,000,000.0
Number of capital adequacy tests required to be met | Test	2
SEF
Regulatory Requirement
Capital	$ 2,500,000
Minimum Requirement	$ 900,000
Number of capital adequacy tests required to be met | Test	2
Cboe Digital Exchange
Regulatory Requirement
Capital	$ 18,900,000
Minimum Requirement	$ 4,100,000
Number of capital adequacy tests required to be met | Test	2
Cboe Clear Digital
Regulatory Requirement
Capital	$ 21,500,000
Minimum Requirement	$ 3,900,000
Number of capital adequacy tests required to be met | Test	2
Cboe Australia
Regulatory Requirement
Capital	$ 8,500,000
Minimum Requirement	3,900,000
Cboe Japan
Regulatory Requirement
Capital	13,500,000
Minimum Requirement	$ 2,700,000
Minimum required regulatory capital ratio (as a percent)	120.00%
Cboe Trading and BIDS Trading
Regulatory Requirement
Minimum net capital required to be maintained, option 1 - percentage of aggregate indebtedness items	6.67%
Minimum net capital required to be maintained, option 2 - amount	$ 100,000