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Segment Reporting | 9 Months Ended
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Sep. 30, 2025
Segment Reporting [Abstract] |
Segment Reporting Disclosure | Segment Reporting The company's business is conducted through one reportable business segment, CME Group consolidated. The company has one operating segment as this is the level at which resource allocation and operating decisions regarding company performance are evaluated and determined by the senior leadership team. The chief operating decision maker (CODM) reviews the financial results of CME Group consolidated on an ongoing basis throughout the year. As a single segment, the segment profitability measure is consolidated net income. Consolidated net income informs key operating decisions as made by the CODM, which include bonus allocation, discretionary share-based awards, liquidity and cash needs, new product development, existing product expansion and product discontinuation. Consolidated net income is deemed the best indicator of segment performance. Segment assets are not reported to, or used by, the CODM to allocate resources or to assess performance. The CODM evaluates current period consolidated net income performance as compared to prior periods, budgeted results and forecasts. The CODM reviews consolidated revenues as disaggregated by the following: clearing and transaction fees as a combination of rate per contract and average daily volume for each major asset class, market data fee revenue and other revenue. The significant expense categories are consistent with those presented on the face of the consolidated statements of income. The components of non-operating income are also reviewed by the CODM. It is noted that the level of financial information provided to the CODM is consistent with the financial statement line items as disclosed in our consolidated statements of income.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 48 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-48 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards 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