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EARNINGS PER COMMON SHARE COMPUTATION
 12 Months Ended
Dec. 31, 2022
Earnings Per Share [Abstract]  
EARNINGS PER COMMON SHARE COMPUTATION EARNINGS PER COMMON SHARE COMPUTATION
Detail supporting the computation of basic and diluted earnings per common share was as follows for the years ended December 31, 2022, 2021 and 2020:
202220212020
 (dollars in millions, except per
common share results, number of
shares/options in thousands)
Net income available for common stockholders$2,806 $2,933 $3,367 
Weighted-average outstanding shares of common stock used to
    compute basic earnings per common share		126,419 128,688 132,199 
Dilutive effect of:
Employee stock options50 64 92 
Restricted stock625 644 721 
Shares used to compute diluted earnings per common share127,094 129,396 133,012 
Basic earnings per common share$22.20 $22.79 $25.47 
Diluted earnings per common share$22.08 $22.67 $25.31 
Number of antidilutive stock options and restricted stock awards
    excluded from computation		205 216 238