XML 102 R88.htm IDEA: XBRL DOCUMENT v3.24.0.1
Earnings Per Share (Basic and Diluted Earnings Per Share) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Net income attributable to CME Group $ 3,226.2 $ 2,691.0 $ 2,636.4
Preferred Stock Dividends, Income Statement Impact (44.2) (38.9) (19.0)
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic 3.6 5.1 (0.3)
Net income $ 3,226.2 $ 2,691.0 $ 2,636.9
Basic 359,023 358,713 358,340
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements 477 468 589
Diluted 359,500 359,181 358,929
Earnings per common share, basic $ 8.87 $ 7.41 $ 7.30
Earnings per common share, diluted $ 8.86 $ 7.40 $ 7.29
Outstanding anti-dilutive options 455 158 86
Net Income Attributable to Common Shareholders of CME Group $ 3,185.6 $ 2,657.2 $ 2,617.1
Restricted Stock [Member]      
Outstanding anti-dilutive options 455 158 86
Retained Earnings [Member]      
Net income attributable to CME Group $ 3,226.2 $ 2,691.0 $ 2,636.4