ORGANIZATION AND BASIS OF PRESENTATION (Policies)	3 Months Ended
Mar. 31, 2023
ORGANIZATION AND BASIS OF PRESENTATION
Basis of Presentation	Basis of Presentation These interim unaudited condensed consolidated financial statements have been prepared in accordance with GAAP as established by FASB for interim financial information and with the instructions to Form 10-Q and should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022. The results of operations for interim periods are not necessarily indicative of the results of operations for the full year. The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities, and reported amounts of revenues and expenses. On an ongoing basis, management evaluates its estimates based upon historical experience, observance of trends, information available from outside sources and various other assumptions that management believes to be reasonable under the circumstances. Actual results may differ from these estimates under different conditions or assumptions. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation of financial position, results of operations and cash flows at the dates and for the periods presented have been included.
Segment information	Segment Information The Company previously operated five reportable business segments prior to the quarter ended June 30, 2022. As a result of the Cboe Digital acquisition, as of the quarter ended June 30, 2022, the Company operates six reportable segments: Options, North American Equities, Europe and Asia Pacific, Futures, Global FX, and Digital which is reflective of how the Company's chief operating decision-maker reviews and operates the business. See Note 14 (“Segment Reporting”) for more information.
Update to Significant Accounting Policies	Update to Significant Accounting Policies There have been no new or material changes to the significant accounting policies discussed for the Company for the three months ended March 31, 2023, that are of significance, or potential significance, to the Company.
Recent Accounting Pronouncements	Recent Accounting Pronouncements - Adopted On March 31, 2022, the SEC issued SAB 121, which sets out interpretive guidance from the staff of the SEC regarding the accounting for obligations to safeguarded digital assets that an entity holds for its platform users. The guidance requires an entity to recognize a liability for the obligation to safeguard the users’ assets and recognize an associated asset for the digital assets held for users. Both the liability and asset will be measured initially and subsequently at the fair value of the digital assets being safeguarded. The guidance also requires additional disclosures related to the nature and amount of digital assets held on behalf of its platform users, with separate disclosure for each significant digital asset, and the vulnerabilities the entity has due to any concentration in such activities. The guidance, effective for interim or annual periods ending after June 15, 2022, was adopted by the Company as of June 30, 2022. As a result of adopting SAB 121, the Company recorded digital assets – safeguarded assets, with corresponding digital assets – safeguarded liabilities of $22.4 million as of June 30, 2022, with no impact to the condensed consolidated statements of income and cash flows. There were no other recent applicable material accounting pronouncements that have been adopted as of March 31, 2023. Recent Accounting Pronouncements - Issued, not yet Adopted There were no applicable material accounting pronouncements that have been issued, but not yet adopted as of March 31, 2023.

ORGANIZATION AND BASIS OF PRESENTATION (Policies)

3 Months Ended

Mar. 31, 2023

ORGANIZATION AND BASIS OF PRESENTATION

These interim unaudited condensed consolidated financial statements have been prepared in accordance with GAAP as established by FASB for interim financial information and with the instructions to Form 10-Q and should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022. The results of operations for interim periods are not necessarily indicative of the results of operations for the full year.

The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities, and reported amounts of revenues and expenses. On an ongoing basis, management evaluates its estimates based upon historical experience, observance of trends, information available from outside sources and various other assumptions that management believes to be reasonable under the circumstances. Actual results may differ from these estimates under different conditions or assumptions.

In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation of financial position, results of operations and cash flows at the dates and for the periods presented have been included.

Segment information

Segment Information

The Company previously operated five reportable business segments prior to the quarter ended June 30, 2022. As a result of the Cboe Digital acquisition, as of the quarter ended June 30, 2022, the Company operates six reportable segments: Options, North American Equities, Europe and Asia Pacific, Futures, Global FX, and Digital which is reflective of how the Company's chief operating decision-maker reviews and operates the business. See Note 14 (“Segment Reporting”) for more information.

Update to Significant Accounting Policies

There have been no new or material changes to the significant accounting policies discussed for the Company for the three months ended March 31, 2023, that are of significance, or potential significance, to the Company.

Recent Accounting Pronouncements

Recent Accounting Pronouncements - Adopted

On March 31, 2022, the SEC issued SAB 121, which sets out interpretive guidance from the staff of the SEC regarding the accounting for obligations to safeguarded digital assets that an entity holds for its platform users. The guidance requires an entity to recognize a liability for the obligation to safeguard the users’ assets and recognize an associated asset for the digital assets held for users. Both the liability and asset will be measured initially and subsequently at the fair value of the digital assets being safeguarded. The guidance also requires additional disclosures related to the nature and amount of digital assets held on behalf of its platform users, with separate disclosure for each significant digital asset, and the vulnerabilities the entity has due to any concentration in such activities. The guidance, effective for interim or annual periods ending after June 15, 2022, was adopted by the Company as of June 30, 2022. As a result of adopting SAB 121, the Company recorded digital assets – safeguarded assets, with corresponding digital assets – safeguarded liabilities of $22.4 million as of June 30, 2022, with no impact to the condensed consolidated statements of income and cash flows. There were no other recent applicable material accounting pronouncements that have been adopted as of March 31, 2023.

Recent Accounting Pronouncements - Issued, not yet Adopted

There were no applicable material accounting pronouncements that have been issued, but not yet adopted as of March 31, 2023.