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EARNINGS PER COMMON SHARE COMPUTATION
 12 Months Ended
Dec. 31, 2020
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, 2020, 2019 and 2018:
202020192018
 (dollars in millions, except per
common share results, number of
shares/options in thousands)
Net income available for common stockholders$3,367 $2,707 $1,683 
Weighted-average outstanding shares of common stock used to
compute basic earnings per common share		132,199 134,055 137,486 
Dilutive effect of:
Employee stock options92 107 194 
Restricted stock721 565 723 
Shares used to compute diluted earnings per common share133,012 134,727 138,403 
Basic earnings per common share$25.47 $20.20 $12.24 
Diluted earnings per common share$25.31 $20.10 $12.16 
Number of antidilutive stock options and restricted stock awards
excluded from computation		238 478 223