v3.26.1
Earnings Per Common Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
EARNINGS    
Income (loss) from continuing operations $ 522 $ 406
Less: Dividends on Preferred Stock 36 36
Income (loss) from continuing operations attributable to Key common shareholders 486 370
Income (loss) from discontinued operations, net of taxes 0 (1)
Net income (loss) attributable to Key common shareholders $ 486 $ 369
WEIGHTED-AVERAGE COMMON SHARES    
Weighted-average Common Shares outstanding (in shares) 1,084,277 1,096,654
Effect of Common Share options and other stock awards (in shares) 10,091 9,486
Weighted-average Common Shares and potential Common Shares outstanding (in shares) [1] 1,094,368 1,106,140
EARNINGS PER COMMON SHARE    
Income (loss) from continuing operations attributable to Key common shareholders (in usd per share) $ 0.45 $ 0.34
Income (loss) from discontinued operations, net of taxes (in usd per share) 0 0
Net income (loss) attributable to Key common shareholders (in usd per share) [2] 0.45 0.34
Income (loss) from continuing operations attributable to Key common shareholders - assuming dilution (in usd per share) 0.44 0.33
Income (loss) from discontinued operations, net of taxes - assuming dilution (in usd per share) 0 0
Net income (loss) attributable to Key common shareholders (in usd per share) [2] $ 0.44 $ 0.33
[1] Assumes conversion of Common Share options and other stock awards and/or convertible preferred stock, as applicable.
[2] EPS may not foot due to rounding