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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2025

Earnings Per Share [Abstract]

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

Anti-dilutive stock awards were as follows for the periods presented:

									Quarter Ended March 31,
(in thousands)															2025						2024
Stock awards															44						46
Total															44						46

Basic And Diluted Earnings Per Share

The following table presents the earnings per share calculation for the periods presented:

												Quarter Ended March 31,
																		2025						2024
Net Income (in millions)																		$	956.2					$	855.2
Less: preferred stock dividends																		(5.7)						(5.3)
Less: undistributed earnings allocated to preferred stock																		(6.3)						(5.5)
Net Income Attributable to Common Shareholders of CME Group																		$	944.2					$	844.4
Weighted Average Number of Common Shares (in thousands):
Basic																		359,613						359,258
Effect of stock options, restricted stock and performance shares																		614						575
Diluted																		360,227						359,833
Earnings per Common Share Attributable to Common Shareholders of CME Group:
Basic																		$	2.63					$	2.35
Diluted																		2.62						2.35

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- References

No definition available.

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- Definition

Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482662/260-10-50-1

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482662/260-10-50-1

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