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EARNINGS PER COMMON SHARE COMPUTATION
 12 Months Ended
Dec. 31, 2018
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, 2018, 2017 and 2016:
 
2018
 
2017
 
2016
 
(dollars in millions, except per
common share results, number of
shares/options in thousands)
Net income available for common stockholders
$
1,683

 
$
2,448

 
$
614

Weighted-average outstanding shares of common stock used to
compute basic earnings per common share
137,486

 
144,493

 
149,375

Dilutive effect of:
 
 
 
 
 
Employee stock options
194

 
172

 
219

Restricted stock
723

 
920

 
1,323

Shares used to compute diluted earnings per common share
138,403

 
145,585

 
150,917

Basic earnings per common share
$
12.24

 
$
16.94

 
$
4.11

Diluted earnings per common share
$
12.16

 
$
16.81

 
$
4.07

Number of antidilutive stock options and restricted stock awards
excluded from computation
223

 
539

 
748