XML 104 R88.htm IDEA: XBRL DOCUMENT
v3.21.2

COMMITMENTS, CONTINGENCIES, AND GUARANTEES (Details) | Apr. 18, 2014 item
--- | ---
City of Providence | Pending Litigation |
Loss Contingencies |
The number of other securities exchanges a lawsuit has been filed against | 14

X
- Definition The number of other securities exchanges a lawsuit has been filed against. + References No definition available. + Details
Name: | cboe_NumberOfOtherSecuritiesExchangesLawsuitFiledAgainst
Namespace Prefix: | cboe_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_LitigationCaseAxis=cboe_CityOfProvidenceRhodeIslandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LitigationStatusAxis=us-gaap_PendingLitigationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |