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Earnings Per Common Share
3 Months Ended
Mar. 31, 2024
Earnings Per Share [Abstract]  
Earnings Per Common Share
2. Earnings Per Common Share

Basic earnings per share is the amount of earnings (adjusted for dividends declared on our preferred stock) available to each Common Share outstanding during the reporting periods. Diluted earnings per share is the amount of earnings available to each Common Share outstanding during the reporting periods adjusted to include the effects of potentially dilutive Common Shares. Potentially dilutive Common Shares include stock options and other stock-based awards. Potentially dilutive Common Shares are excluded from the computation of diluted earnings per share in the periods where the effect would be antidilutive. 
Our basic and diluted earnings per Common Share are calculated as follows:
 Three months ended March 31,
Dollars in millions, except per share amounts20242023
EARNINGS
Income (loss) from continuing operations
$219 $311 
Less: Net income (loss) attributable to noncontrolling interests — 
Income (loss) from continuing operations attributable to Key219 311 
Less: Dividends on Preferred Stock36 36 
Income (loss) from continuing operations attributable to Key common shareholders183 275 
Income (loss) from discontinued operations, net of taxes 
Net income (loss) attributable to Key common shareholders$183 $276 
WEIGHTED-AVERAGE COMMON SHARES
Weighted-average Common Shares outstanding (000)929,692 926,490 
Effect of Common Share options and other stock awards7,319 7,314 
Weighted-average Common Shares and potential Common Shares outstanding (000) (a)
937,011 933,804 
EARNINGS PER COMMON SHARE
Income (loss) from continuing operations attributable to Key common shareholders$.20 $.30 
Income (loss) from discontinued operations, net of taxes — 
Net income (loss) attributable to Key common shareholders (b)
.20 .30 
Income (loss) from continuing operations attributable to Key common shareholders — assuming dilution
$.20 $.30 
Income (loss) from discontinued operations, net of taxes — assuming dilution — 
Net income (loss) attributable to Key common shareholders — assuming dilution (b)
.20 .30 
(a)Assumes conversion of Common Share options and other stock awards and/or convertible preferred stock, as applicable.
(b)EPS may not foot due to rounding.